WorldWideScience

Sample records for digital multimedia broadcasting

  1. Design of an Advertisement Scenario for Electric Vehicles Using Digital Multimedia Broadcasting

    Science.gov (United States)

    Lee, Junghoon; Kim, Hye-Jin; Shin, In-Hye; Cho, Jason; Lee, Sang Joon; Kwak, Ho-Young

    This paper designs an integrative advertisement system based on digital multimedia broadcasting for the electric vehicles, which need a lot of driving information for battery efficiency and charge planning. The advertiser interface interacts with the advertisement processing system to pay the fee and have the contents endorsed. The advertisement contents are registered, monitored, encoded, and finally delivered to vehicles according to the contract via the broadcasting center. Here, this paper defines a new frame format on the data service stream and is in the process of developing and verifying the encoder and decoder modules. Our system is expected to provide the fundamentals for the development of diverse electric vehicle services.

  2. Digital audio and video broadcasting by satellite

    Science.gov (United States)

    Yoshino, Takehiko

    In parallel with the progress of the practical use of satellite broadcasting and Hi-Vision or high-definition television technologies, research activities are also in progress to replace the conventional analog broadcasting services with a digital version. What we call 'digitalization' is not a mere technical matter but an important subject which will help promote multichannel or multimedia applications and, accordingly, can change the old concept of mass media, such as television or radio. NHK Science and Technical Research Laboratories has promoted studies of digital bandwidth compression, transmission, and application techniques. The following topics are covered: the trend of digital broadcasting; features of Integrated Services Digital Broadcasting (ISDB); compression encoding and transmission; transmission bit rate in 12 GHz band; number of digital TV transmission channels; multichannel pulse code modulation (PCM) audio broadcasting system via communication satellite; digital Hi-Vision broadcasting; and development of digital audio broadcasting (DAB) for mobile reception in Japan.

  3. Policies and Economics of Digital Multimedia Transmission

    CERN Document Server

    Gerami, Mohsen

    2010-01-01

    There are different Standards of digital multimedia transmission, for example DVB in Europe and ISDB in Japan and DMB in Korea, with different delivery system (example MPEG-2, MPEG-4).This paper describe an overview of Digital Multimedia Transmission (DMT) technologies. The economic aspects of digital content & software solution industry as a strategic key in the future will be discussed. The study then focuses on some important policy and technology issues, such S-DMB, T-DMB, Digital Video Broadcasting Handheld (DVB-H) and concludes DMT policies for convergence of telecommunications and broadcasting.

  4. Policies and Economics of Digital Multimedia Transmission

    Directory of Open Access Journals (Sweden)

    Mohsen Gerami

    2010-03-01

    Full Text Available There are different Standards of digital multimedia transmission, for example DVB in Europe and ISDB in Japan and DMB in Korea, with different delivery system (example MPEG-2, MPEG-4.This paper describe an overview of Digital Multimedia Transmission (DMT technologies. The economic aspects of digital content and software solution industry as a strategic key in the future will be discussed. The study then focuses on some important policy and technology issues, such S-DMB, T-DMB, Digital Video Broadcasting Handheld (DVB-H and concludes DMT policies for convergence of telecommunications and broadcasting.

  5. Data broadcasting: merging digital broadcasting with the Internet

    DEFF Research Database (Denmark)

    2001-01-01

    resulting from dense traffic on the Internet * Considers the technical implications of data broadcasting over different network infrastructures * Examines the process of developing and launching multimedia channels in a data broadcasting environment. Essential, up to date coverage for executives...

  6. Data broadcasting: merging digital broadcasting with the Internet

    DEFF Research Database (Denmark)

    2001-01-01

    This fully revised and updated edition of Data Broadcasting presents an exhaustive overview of the specific data broadcasting and bordering technologies concerned. Answering a wealth of questions, it describes this new technology in detail, examining how it differs from established technologies......, and for what means it can be used. It also analyses data broadcasting from the perspectives of both the medium and business. * Features the latest developments in electronic media * Discusses the major media opportunities of data broadcasting * Shows how data broadcasting can overcome many notorious problems...... resulting from dense traffic on the Internet * Considers the technical implications of data broadcasting over different network infrastructures * Examines the process of developing and launching multimedia channels in a data broadcasting environment. Essential, up to date coverage for executives...

  7. China formally issued mobile multimedia broadcasting industry standard

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ October 24, 2006, China SARFT (State Administration of Radio Film and Television) formally issued the China mobile multimedia broadcasting (namely,Mobile TV) industry standard. The standard is a STiMi standard self-developed in China and put into practice from November 1 this year.

  8. Performance evaluation of Eureka-147 with RS(204, 188) code for mobile multimedia broadcasting

    Science.gov (United States)

    Chang, Seung-Gi; Ha, Victor H. S.; Zhang, Zhiming; Kim, Yongje

    2003-06-01

    The demand for mobile multimedia broadcasting service is increasing consistently as more people expect seamless outdoor connections and communication capabilities. In this paper, we introduce the digital multimedia broadcasting (DMB) system based on Eureka-147 that has been tentatively adopted in Korea. Since Eureka-147 is originally designed for broadcasting digital audio data, it provides a bit error rate (BER) of about 10-4 while the transmission of compressed video data, for example, requires the BER of about 10-9. To deal with this mismatch, the Korean DMB standard is considering the addition of the RS(204,188) coder to Eureka-147. In this paper, we apply the RS(204,188) coder to the Eureka-147 and present the simulation results on the performance of this modified system at various transmission and protection modes. We conclude that the addition of RS(204,188) coder to Eureka-147 in the Korean DMB system results in the satisfactory level of BER for mobile multimedia broadcasting services.

  9. Digital video and audio broadcasting technology a practical engineering guide

    CERN Document Server

    Fischer, Walter

    2010-01-01

    Digital Video and Audio Broadcasting Technology - A Practical Engineering Guide' deals with all the most important digital television, sound radio and multimedia standards such as MPEG, DVB, DVD, DAB, ATSC, T-DMB, DMB-T, DRM and ISDB-T. The book provides an in-depth look at these subjects in terms of practical experience. In addition it contains chapters on the basics of technologies such as analog television, digital modulation, COFDM or mathematical transformations between time and frequency domains. The attention in the respective field under discussion is focussed on aspects of measuring t

  10. Vast Educational Mobile Content Broadcasting using ARMrayan Multimedia Mobile CMS

    CERN Document Server

    Fatahi, Somayeh; Jahromi, Zahra Forootan

    2010-01-01

    The huge information flow currently available to young generation makes it difficult for educational centers to train them as needed. Most of these information flows occur in transportation time or while on public areas. Competing with commercial information streams is far out of educational centers time and budget. For creating enough mobile applications for vast educational mobile content broadcasting that can match young spirits as well, we designed and developed the ARMrayan Multimedia Mobile CMS as the software that helps communities, educational, cultural or marketing centers in a way that ordinary operators be able to create a variety of fully functional multimedia mobile applications such as tutorials, catalogues, books, and guides in minutes without writing even a line of code. In this paper, we present the role of our developed software in our proposed vast educational content broadcasting system using kiosks and Bluetooth advertising, which will lead to a great leap in M-commerce marketing and publ...

  11. Vast Educational Mobile Content Broadcasting using ARMrayan Multimedia Mobile CMS

    OpenAIRE

    2010-01-01

    The huge information flow currently available to young generation makes it difficult for educational centers to train them as needed. Most of these information flows occur in transportation time or while on public areas. Competing with commercial information streams is far out of educational centers time and budget. For creating enough mobile applications for vast educational mobile content broadcasting that can match young spirits as well, we designed and developed the ARMrayan Multimedia Mo...

  12. 47 CFR 73.403 - Digital audio broadcasting service requirements.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital audio broadcasting service requirements. 73.403 Section 73.403 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES Digital Audio Broadcasting § 73.403 Digital audio broadcasting...

  13. Digital libraries: A testbed for multimedia technology

    Institute of Scientific and Technical Information of China (English)

    ZHUANG Yue-ting

    2005-01-01

    A distinguishing feature of a digital library is that it has Terabyte volumes of multimedia resources. One challenge for researchers in the field of multimedia is to find a testbed for showing the potentials of multimedia technologies such as video summarization, semantic annotation, multimedia cross indexing and retrieval, and etc. Deeper research and wider applications of digital libraries revealed their indispensable role as testbed for multimedia technologies. This paper presents challenging issues of some key techniques used in digital libraries and their specific needs for multimedia technologies.

  14. Digital terrestrial television broadcasting technology and system

    CERN Document Server

    2015-01-01

    Now under massive deployment worldwide, digital terrestrial television broadcasting (DTTB) offers one of the most attractive ways to deliver digital TV over the VHF/UHF band. Written by a team of experts for specialists and non-specialists alike, this book serves as a comprehensive guide to DTTB. It covers the fundamentals of channel coding and modulation technologies used in DTTB, as well as receiver technology for synchronization, channel estimation, and equalization. It also covers the recently introduced Chinese DTTB standard, using the SFN network in Hong Kong as an example.

  15. Analysis of satellite broadcasting systems for digital television

    Science.gov (United States)

    de Gaudenzi, Riccardo; Elia, Carlo; Viola, Roberto

    1993-01-01

    This paper introduces the new concept of digital direct satellite broadcasting (D-DBS), which allows unprecedented flexibility by providing a large number of audio-visual services. The concept elaborated on in this paper assumes an information rate of about 40 Mb/s, which is compatible with practically all present-day transponders. After discussion of the general system concept, the optimization procedure is introduced and results of the transmission system optimization are presented. Channel distortion and uplink/downlink interference effects are taken into account by means of a time domain system computer simulation approach. It is shown, by means of link budget analysis, how a medium power direct-to-home TV satellite can provide multimedia services to users equipped with small (60 cm) dish antennas.

  16. Next generation mobile broadcasting

    CERN Document Server

    Gómez-Barquero, David

    2013-01-01

    Next Generation Mobile Broadcasting provides an overview of the past, present, and future of mobile multimedia broadcasting. The first part of the book-Mobile Broadcasting Worldwide-summarizes next-generation mobile broadcasting technologies currently available. This part covers the evolutions of the Japanese mobile broadcasting standard ISDB-T One-Seg, ISDB-Tmm and ISDB-TSB; the evolution of the South Korean T-DMB mobile broadcasting technology AT-DMB; the American mobile broadcasting standard ATSC-M/H; the Chinese broadcasting technologies DTMB and CMMB; second-generation digital terrestrial

  17. 76 FR 55817 - Broadcast Applications and Proceedings; Fairness Doctrine and Digital Broadcast Television...

    Science.gov (United States)

    2011-09-09

    ... COMMISSION 47 CFR Parts 1, 73 and 76 Broadcast Applications and Proceedings; Fairness Doctrine and Digital Broadcast Television Redistribution Control; Fairness Doctrine, Personal Attacks, Political Editorials and... legal effect and are obsolete. The deleted rules include ] the fairness doctrine, broadcast flag rules...

  18. One Way Multimedia Broadcasting as a Tool for Education and Development in Developing Nations

    Science.gov (United States)

    Chandrasekhar, M. G.; Venugopal, D.; Sebastian, M.; Chari, B.

    2000-07-01

    An improved quality of life through education and developmental communication is an important necessity of societal up-liftment in the new millennium, especially in the developing nations. The population explosion and the associated pressure on the scarce resources to meet the basic necessities have made it more or less impossible for most of the nations to invest reasonable resources in realizing adequate channels of formal education. Thanks to the developments in satellite communication and associated technologies, new vistas are available today to provide education and developmental communication opportunities to millions of people, spread across the globe. Satellite based Digital Audio and Multimedia Broadcasting is one such new development that is being viewed as an innovative space application in the coming decades. The potential of DAB technology to reach education, information and entertainment directly to the user through a specially designed receiver could be efficiently utilized by the developing nations to overcome their difficulties in realizing formal channels of education and information dissemination. WorldSpace plans to launch three geo-stationary satellites that would cover most of the developing economies in Africa, the Mediterranean, the Middle East, Asia, Latin America and the Caribbean. Apart from a variety of digital, high quality audio channels providing news, views, education and entertainment opportunities, the end users can also get a responsive multimedia. The multimedia is being planned as a specially packaged offering that can meet the demand of students, professionals as well as certain special groups who have certain specific data and information requirements. Apart from WorldSpace, renowned agencies/firms from different parts of the world shall provide the required content to meet these requirements. Though the Internet option is available, higher telephone charges and the difficulty in getting access have made this option less

  19. Multimedia foundations core concepts for digital design

    CERN Document Server

    Costello, Vic; Youngblood, Susan

    2012-01-01

    Understand the core concepts and skills of multimedia production and digital storytelling using text, graphics, photographs, sound, motion, and video. Then, put it all together using the skills that you have developed for effective project planning, collaboration, visual communication, and graphic design. Presented in full color with hundreds of vibrant illustrations, Multimedia Foundations trains you in the principles and skill sets common to all forms of digital media production, enabling you to create successful, engaging content, no matter what tools you are using. Companion website

  20. Digital terrestrial broadcasting receiver in the U.K; Eikoku chijoha digital hoso jushinki

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Digital terrestrial broadcasting is broadcasted in parallel with existing UHF analog broadcasting, whereas each of allocated channel frequencies can transmit five to six programs simultaneously. Each home can receive a number of programs with the existing antenna without a need of installing a new satellite antenna or cable. Among the countries of the world running forward to digitization of broadcasting all at once, the U.K. develops advancing movements and leads the world by starting the digital terrestrial broadcasting. In addition to the digitized broadcasting of conventional analog broadcasting programs, the `Ondigitals` (broadcasting operators) have started newly the pay broadcasting. Toshiba has been selected as one of the six developers and manufacturers of digital terrestrial broadcasting receivers, and has developed the digital terrestrial broadcasting receiver DTB2000. For the modulation system, the orthogonal frequency division multiplex (OFDM) was chosen as a system being strong against ghost and most suitable for digital terrestrial broadcasting. In addition, the receiver is equipped with software download function by using the broadcasting waves, and the common interface being the communication specification specified in the DVB (digital video broadcasting) to provide future function expandability. (translated by NEDO)

  1. The Rise of Digital Multimedia Systems

    Directory of Open Access Journals (Sweden)

    Ross Gibson

    2013-08-01

    Full Text Available With this essay, I want to understand why interactive and relational media forms have become so ubiquitous so quickly. Comparing the nexus of cinema and nationalism with the contemporary dyad of digital media and transnationalism (or globalisation, we can ask whether digital multimedia systems have arisen to reflect and impel our contemporary psychic and social conditions. Because multimedia rarely gets ‘locked-off’, its component elements can always be pulled apart, sent back to their databases and then instantaneously rearranged into newly iterated federations. In this respect it is like our unstable contemporary lives, so buffeted with ever-altering values, opportunities, anxieties and obligations all upwelling because of globalisation, migration and multiculturalism.

  2. Digital communication communication, multimedia, security

    CERN Document Server

    Meinel, Christoph

    2014-01-01

    The authors give a detailed summary about the fundamentals and the historical background of digital communication. This includes an overview of the encoding principles and algorithms of textual information, audio information, as well as images, graphics, and video in the Internet. Furthermore the fundamentals of computer networking, digital security and cryptography are covered. Thus, the book provides a well-founded access to communication technology of computer networks, the internet and the WWW. Numerous pictures and images, a subject-index and a detailed list of historical personalities in

  3. 76 FR 13436 - NIJ Request for Comments on Draft Vehicular Digital Multimedia Evidence Recording System...

    Science.gov (United States)

    2011-03-11

    ... Digital Multimedia Evidence Recording System Selection and Application Guide AGENCY: National Institute of... Vehicular Digital Multimedia Evidence Recording System Selection and Application Guide'' The opportunity to... Office of Justice Programs NIJ Request for Comments on Draft Vehicular Digital Multimedia...

  4. Effective Radio Resource Management for Multimedia Broadcast/Multicast Services in UMTS Networks

    Directory of Open Access Journals (Sweden)

    Soares Armando

    2006-01-01

    Full Text Available Broadcast and multicast offer a significant improvement of spectrum utilization, and become particularly important where information channels are shared among several users. Mobile cellular environments are expected to evolve with the technological approaches necessary to facilitate the deployment of multimedia services, such as streaming, file download, and carousel services. The perspective that video streaming in wireless networks services is an attractive service to end-users has spurred the research in this area. To provide for a video delivery platform in UMTS, the third generation partnership project (3GPP addressed this problem with the introduction of the multimedia broadcast and multicast services (MBMS in 3GPP Release 6. In this document we analyse several effective radio resource management techniques to provide MBMS, namely, use of nonuniform QAM constellations, multicode, and macrodiversity to guarantee the optimal distribution of QoS depending on the location of mobiles.

  5. 47 CFR 73.9001 - Redistribution control of digital television broadcasts.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Redistribution control of digital television... RADIO SERVICES RADIO BROADCAST SERVICES Digital Broadcast Television Redistribution Control § 73.9001 Redistribution control of digital television broadcasts. Licensees of TV broadcast stations may utilize...

  6. Water vapor estimation using digital terrestrial broadcasting waves

    Science.gov (United States)

    Kawamura, S.; Ohta, H.; Hanado, H.; Yamamoto, M. K.; Shiga, N.; Kido, K.; Yasuda, S.; Goto, T.; Ichikawa, R.; Amagai, J.; Imamura, K.; Fujieda, M.; Iwai, H.; Sugitani, S.; Iguchi, T.

    2017-03-01

    A method of estimating water vapor (propagation delay due to water vapor) using digital terrestrial broadcasting waves is proposed. Our target is to improve the accuracy of numerical weather forecast for severe weather phenomena such as localized heavy rainstorms in urban areas through data assimilation. In this method, we estimate water vapor near a ground surface from the propagation delay of digital terrestrial broadcasting waves. A real-time delay measurement system with a software-defined radio technique is developed and tested. The data obtained using digital terrestrial broadcasting waves show good agreement with those obtained by ground-based meteorological observation. The main features of this observation are, no need for transmitters (receiving only), applicable wherever digital terrestrial broadcasting is available and its high time resolution. This study shows a possibility to estimate water vapor using digital terrestrial broadcasting waves. In the future, we will investigate the impact of these data toward numerical weather forecast through data assimilation. Developing a system that monitors water vapor near the ground surface with time and space resolutions of 30 s and several kilometers would improve the accuracy of the numerical weather forecast of localized severe weather phenomena.

  7. Exchangeable Multimedia Framework for Digital Library in Medicine

    Science.gov (United States)

    Chen, Bing-Hao; Hsu, Chien-Yeh; Lin, Ming-Chin; Li, Yu-Chuan

    2002-01-01

    We have developed a multimedia framework to manage a medical information database. The system is operated through the Internet and the information is presented in a form of digital museum or library1. The multimedia framework has the capability of exchanging, storing/retrieving, presenting and managing large amount of medical multimedia. To achieve the challenges described above, the framework was designed to be composed of three parts: the presentation module, the module of metadata description, an d the multimedia database. Accompany With the exchangeable open architecture developed, medical multimedia data can be operated in many different ways.

  8. Handbook of digital forensics of multimedia data and devices

    CERN Document Server

    Li, Shujun

    2015-01-01

    Digital forensics and multimedia forensics are rapidly growing disciplines whereby electronic information is extracted and interpreted for use in a court of law. These two fields are finding increasing importance in law enforcement and the investigation of cybercrime as the ubiquity of personal computing and the internet becomes ever-more apparent. Digital forensics involves investigating computer systems and digital artefacts in general, while multimedia forensics is a sub-topic of digital forensics focusing on evidence extracted from both normal computer systems and special multimedia devices, such as digital cameras. This book focuses on the interface between digital forensics and multimedia forensics, bringing two closely related fields of forensic expertise together to identify and understand the current state-of-the-art in digital forensic investigation. Both fields are expertly attended to by contributions from researchers and forensic practitioners specializ ng in diverse topics such as forensic aut...

  9. 关于数字广播技术的特点及其应用探讨%Characteristics and its Application on Digital Broadcasting Technology

    Institute of Scientific and Technical Information of China (English)

    王勇

    2014-01-01

    随着社会经济的发展进步与科学技术的迅猛发展,许多技术都得到了一定程度的快速发展,尤其是广播技术更是发生了巨大变化,导致出现了数字广播技术,深受广播电视行业的普遍欢迎。该文对数字音频广播、数字多媒体广播、数字调幅广播、数字卫星声音广播、网上(数字)广播等几种数字广播技术及其特点进行了详细介绍,并进一步阐释了数字广播技术的应用前景,以期能够进一步扩展数字广播技术的应用范围。%With the rapid development of science and technology and social economy, many technology has been rapid develop-ment to a certain extent, especially radio technology is produced tremendous change, leading to the emergence of digital broad-casting technology, widely welcomed by the radio and TV industry. In this paper, the digital audio broadcasting, digital multime-dia broadcasting, digital AM broadcasting, digital satellite sound broadcasting, Internet (digital) broadcast several digital broadcast-ing technology and its characteristics are introduced in detail, and further illustrates the application prospect of digital broadcasting technology, in order to further expand the scope of application of the digital broadcasting technology.

  10. An enhanced framework for providing multimedia broadcast/multicast service over heterogeneous networks

    Institute of Scientific and Technical Information of China (English)

    Yi-han XU; Chee-Onn CHOW; Mau-Luen THAM; Hiroshi ISHII

    2014-01-01

    Multimedia broadcast multicast service (MBMS) with inherently low requirement for network resources has been proposed as a candidate solution for using such resources in a more efficient manner. On the other hand, the Next Generation Mobile Network (NGMN) combines multiple radio access technologies (RATs) to optimize overall network performance. Handover performance is becoming a vital indicator of the quality experience of mobile user equipment (UE). In contrast to the conventional vertical handover issue, the problem we are facing is how to seamlessly transmit broadcast/multicast sessions among heterogeneous networks. In this paper, we propose a new network entity, media independent broadcast multicast service center (MIBM-SC), to provide seamless handover for broadcast/multicast sessions over heterogeneous networks, by extensions and enhancements of MBMS and media independent information service (MIIS) architectures. Additionally, a network selection scheme and a cell transmission mode selection scheme are proposed for selecting the best target network and best transmission mode. Both schemes are based on a load-aware network capacity estimation algorithm. Simulation results show that the pro-posed approach has the capability to provide MBMS over heterogeneous networks, with improved handover performance in terms of packet loss rate, throughput, handover delay, cell load, bandwidth usage, and the peak signal-to-noise ratio (PSNR).

  11. Will broadcasters survive in the online and digital domain?

    NARCIS (Netherlands)

    Leurdijk, A.

    2007-01-01

    Digital television and the internet are fundamentally changing media markets. Consumers have access to an increasing amount of news, information and entertainment. In addition to traditional media companies such as publishers and broadcasters new players enter the market as content producers, packag

  12. Will broadcasters survive in the online and digital domain?

    NARCIS (Netherlands)

    Leurdijk, A.

    2007-01-01

    Digital television and the internet are fundamentally changing media markets. Consumers have access to an increasing amount of news, information and entertainment. In addition to traditional media companies such as publishers and broadcasters new players enter the market as content producers,

  13. Will broadcasters survive in the online and digital domain?

    NARCIS (Netherlands)

    Leurdijk, A.

    2007-01-01

    Digital television and the internet are fundamentally changing media markets. Consumers have access to an increasing amount of news, information and entertainment. In addition to traditional media companies such as publishers and broadcasters new players enter the market as content producers, packag

  14. Kajian implementasi radio siaran digital di Indonesia [Study of digital radio broadcasting implementation in Indonesia

    Directory of Open Access Journals (Sweden)

    Amry Daulat Gultom

    2015-12-01

    Full Text Available Peraturan Menteri Komunikasi dan Informatika RI nomor 21 tahun 2009 tentang  Standar Penyiaran Digital Untuk Penyiaran Radio pada Pita VHF di Indonesia menyatakan bahwa dalam rangka mengatasi permasalahan penggunaan frekuensi VHF Band II untuk penyiaran radio FM yang tidak sesuai dengan rencana induk, serta tidak terpenuhinya permohonan untuk penggunaan kanal frekuensi dari masyarakat, maka perlu dicarikan saluran siaran alternatif dengan menggunakan sistem penyiaran radio digital standard DAB Family. Hingga saat ini belum ada perkembangan berarti terkait implementasinya, sehingga perlu dilakukan penelitian untuk mengetahui potensi radio siaran digital, kesiapan dari sisi pemerintah, operator, dan masyarakat, dan kendala yang dihadapi serta merumuskan strategi yang akan digunakan mengatasinya. Metode analisis yang digunakan adalah SWOT dan TOWS kualitatif dari data wawancara dan studi literatur. Hasil penelitian menunjukkan bahwa pihak stasiun radio sudah siap terhadap digitalisasi radio siaran, pihak pemerintah belum begitu siap karena belum adanya regulasi pendukung Permen Kominfo tentang standard radio digital, dan masyarakat juga belum siap karena kurangnya sosialisasi dan masih susah didapatkannya perangkat penerima siaran radio digital. Pengintegrasian penerima siaran radio digital pada kendaraan bermotor roda empat dan telepon genggam yang baru dapat meningkatkan keberadaan perangkat penerima siaran radio digital.*****The Minister of Communication and Information Regulation number 21 of 2009 on Digital Broadcasting Standards for VHF Band Radio Broadcasting in Indonesia stated that in order to overcome the problems of VHF Band II frequency utilization for FM radio broadcasting that is not in accordance with the master plan, as well as non-fulfillment of the request for frequency channels utilization of the society, neeed to find alternative broadcast channel by DAB Family digital radio broadcasting system. Until now there has no

  15. 47 CFR 73.758 - System specifications for digitally modulated emissions in the HF broadcasting service.

    Science.gov (United States)

    2010-10-01

    ... emissions in the HF broadcasting service. 73.758 Section 73.758 Telecommunication FEDERAL COMMUNICATIONS... § 73.758 System specifications for digitally modulated emissions in the HF broadcasting service. (a... digital audio broadcasting and datacasting are authorized. The RF requirements for the DRM system...

  16. 47 CFR 73.6016 - Digital Class A TV station protection of TV broadcast stations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital Class A TV station protection of TV... Class A TV station protection of TV broadcast stations. Digital Class A TV stations must protect authorized TV broadcast stations, applications for minor changes in authorized TV broadcast stations filed...

  17. Channel coding for digital HDTV terrestrial broadcasting

    Science.gov (United States)

    Beakley, Guy W.

    1991-01-01

    The Federal Communications Commission of the United States has ruled that high-definition television (HDTV) will occupy no more than 6 MHz of the VHF and UHF bands now used for conventional TV. In order to transmit the HDTV signal in 6 MHz, the four United States digital HDTV proponents, the DigiCipher, DSC-HDTV, ADTV, and ATVA-P systems, are reducing the video data rate of HDTV to 15-17 Mb/s, a compression ratio of approximately 60-70 times. The high compression dictates that channel coding be used to avoid block errors and multiframe error propagation. High efficiency in channel utilization required by the 6-MHz limitation means that the channel must be properly equalized and that the multipath and interfering signals must be severely limited. The channel coding techniques used for error reduction include data interleaving, error detection and replacement, and error correction at different levels of protection for bits and blocks of unequal importance.

  18. 76 FR 52350 - Vehicular Digital Multimedia Evidence Recording System (VDMERS) Standard, Certification Program...

    Science.gov (United States)

    2011-08-22

    ... of Justice Programs Vehicular Digital Multimedia Evidence Recording System (VDMERS) Standard...) will make available to the general public three draft documents related to Vehicular Digital Multimedia Evidence Recording Systems (VDMERSs) used by law enforcement agencies: 1. Draft VDMERS Standard for...

  19. 76 FR 27355 - Law Enforcement Vehicular Digital Multimedia Evidence Recording System Selection and Application...

    Science.gov (United States)

    2011-05-11

    ... of Justice Programs Law Enforcement Vehicular Digital Multimedia Evidence Recording System Selection... public, the ``Law Enforcement Vehicular Digital Multimedia Evidence Recording System Selection and... representatives, law enforcement agencies and organizations, research, development and scientific communities, and...

  20. Beginning of terrestrial digital TV broadcasting; Digital terebi chijoha hoso no hajimari

    Energy Technology Data Exchange (ETDEWEB)

    Wada, H. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1998-11-10

    This paper summarizes terrestrial digital TV broadcasting. The Ministry of Posts and Telecommunications has begun large-scale experimental broadcasting in the Tokyo area since the fall of 1998, and in seven locations in the country since the spring of 1999, and plans full-scale broadcasting in three large cities in 2000. The broadcasting is composed of encoding in which analog information of recorded voice and images is converted into digital data and compressed only into important portions, multiplexing to combine them, and digital modulation thereof for wave transmission. While the transmission media would include terrestrial broadcasting, satellite broadcasting and CATV, attention has been called recently on orthogonal frequency division multiplex (OFDM). TV waves will be received on the currently used analog TV sets attached with adapters, but the TV sets will be an integrated type in the future. Viewers will select actively programs and items of information. Its economic proliferation effect is expected to amount to 200 trillion yen in a decade. The OFDM has strong resistance against ghosts, and reduces wave disturbances. Reflection and decay of waves due to buildings in urban areas are not non-existing, where necessity of CATV may possibly increase. Multi-purpose utilization of receiving units may result in spread of new communication businesses. (NEDO)

  1. Training Humanities Doctoral Students in Collaborative and Digital Multimedia

    Science.gov (United States)

    Ensslin, Astrid; Slocombe, Will

    2012-01-01

    This study reports on the pedagogic rationale, didactic design and implications of an AHRC-funded doctoral training scheme in collaborative and digital multimedia in the humanities. In the second part of this article we discuss three areas of provision that were identified as particularly significant and/or controversial. These include (1) desktop…

  2. Digital Audio Radio Broadcast Systems Laboratory Testing Nearly Complete

    Science.gov (United States)

    2005-01-01

    Radio history continues to be made at the NASA Lewis Research Center with the completion of phase one of the digital audio radio (DAR) testing conducted by the Consumer Electronics Group of the Electronic Industries Association. This satellite, satellite/terrestrial, and terrestrial digital technology will open up new audio broadcasting opportunities both domestically and worldwide. It will significantly improve the current quality of amplitude-modulated/frequency-modulated (AM/FM) radio with a new digitally modulated radio signal and will introduce true compact-disc-quality (CD-quality) sound for the first time. Lewis is hosting the laboratory testing of seven proposed digital audio radio systems and modes. Two of the proposed systems operate in two modes each, making a total of nine systems being tested. The nine systems are divided into the following types of transmission: in-band on-channel (IBOC), in-band adjacent-channel (IBAC), and new bands. The laboratory testing was conducted by the Consumer Electronics Group of the Electronic Industries Association. Subjective assessments of the audio recordings for each of the nine systems was conducted by the Communications Research Center in Ottawa, Canada, under contract to the Electronic Industries Association. The Communications Research Center has the only CCIR-qualified (Consultative Committee for International Radio) audio testing facility in North America. The main goals of the U.S. testing process are to (1) provide technical data to the Federal Communication Commission (FCC) so that it can establish a standard for digital audio receivers and transmitters and (2) provide the receiver and transmitter industries with the proper standards upon which to build their equipment. In addition, the data will be forwarded to the International Telecommunications Union to help in the establishment of international standards for digital audio receivers and transmitters, thus allowing U.S. manufacturers to compete in the

  3. Frequency allocations for a new satellite service - Digital audio broadcasting

    Science.gov (United States)

    Reinhart, Edward E.

    1992-03-01

    The allocation in the range 500-3000 MHz for digital audio broadcasting (DAB) is described in terms of key issues such as the transmission-system architectures. Attention is given to the optimal amount of spectrum for allocation and the technological considerations relevant to downlink bands for satellite and terrestrial transmissions. Proposals for DAB allocations are compared, and reference is made to factors impinging on the provision of ground/satellite feeder links. The allocation proposals describe the implementation of 50-60-MHz bandwidths for broadcasting in the ranges near 800 MHz, below 1525 MHz, near 2350 MHz, and near 2600 MHz. Three specific proposals are examined in terms of characteristics such as service areas, coverage/beam, channels/satellite beam, and FCC license status. Several existing problems are identified including existing services crowded with systems, the need for new bands in the 1000-3000-MHz range, and variations in the nature and intensity of implementations of existing allocations that vary from country to country.

  4. A Semiotic Framework for the Semantics of Digital Multimedia Learning Objects

    DEFF Research Database (Denmark)

    May, Michael

    2007-01-01

    The relevance of semiotics for extending multimedia description schemes will be shown relative to existing strategies for indexing and retrieval. The semiotic framework presented is intended to support a compositional semantics of flexible digital multimedia objects. Besides semiotics insights from...

  5. Watermark in the Digital Video Broadcasting Handheld Transmission Signal

    Institute of Scientific and Technical Information of China (English)

    HU Ling-na; JIANG Ling-ge; HE Chen; YANG Feng

    2009-01-01

    Transmitter identification (TxID) technique is used to diagnose the operation status of radio trans-mitters in DTV distributed transmission network. A new TxID method for digital video broadcasting-handheld (DVB-H) system is proposed. Watermark is embedded in the DVB-H signal to form the composite signal. Ac-cording to watermarking theory we demonstrate the required signal level for watermarking signal to achieve given bit error Probability under different circumstance. By selecting the reference pattern to generate watermarking signal, peak-to-average power ratio (PAPR) of the transmitted signal can be improved. Simulation results show that even in wireless situation the receiver can distinguish the watermarking signal with low embedding strength, and distortion to the host signal can also be ignored.

  6. Positioning models and systems based on digital television broadcasting signals

    Institute of Scientific and Technical Information of China (English)

    HE Feng; WU Lenan

    2007-01-01

    The requirement and feasibility of the positioning system using digital television(DTV)broadcasting signals are analyzed.The principle of DTV positioning on the basis of frame synchronization is brought forward and the ranging characteristic is studied that the observables are asynchronously measured during the same epoch interval.The models of the pseudo-range observation and Doppler carrier phase integral are researched.The system observation and state equations are presented on the basis of the above models.The simulation results showed that DTV positioning technology could remarkably improve the precision of system state estimates using smoothing methods for positioning systems or integrated navigation systems.The DTV positioning that has a sub-meter level ranging error and meter level positioning accuracy can parallel with and even taken as a beneficial substitute for the tradition positioning technology.

  7. Public Service Broadcasting as a Public Good: Challenges in the Digital Era

    Directory of Open Access Journals (Sweden)

    Ivana Andrijašević

    2015-12-01

    Full Text Available This article presents a summary of the most important standpoints of the economic debate about public service broadcasting as a public good, and its provision in both the analogue and digital age of broadcasting. Due to frequent technological developments, which heavily influence the broadcasting sector, this debate, initiated in 1958 by American economist Paul A. Samuelson, has continued up to the present day. It also reflects on the concept of PSM as a public good in a globalizing, multi-platform, usergenerated content infused media landscape. Finally, it ponders the future developments of PSM as a public good in the digital era of broadcasting.

  8. Marketing Digital Multimedia: nuevos formatos y tendencias

    OpenAIRE

    2011-01-01

    En un momento de grandes cambios y novedades tecnológicas se hace necesario un estudio donde se den a cono-cer las transformaciones del marketing a partir de la difusión de las tecnologías digitales, especialmente el diseño de estrategias específicas para los numerosos medios interactivos en línea.Así mismo se analizan las características y principios de las campañas en línea y de la producción publicitaria multimedia para medios interactivos.El propósito del estudio es conocer la evolución y...

  9. Television for the 21st century: initial experience with digital high-definition television broadcast

    Science.gov (United States)

    Mahrer, Stephen M.

    2000-08-01

    The advent of US Digital Television Broadcasting in the late fall of 1998 has profoundly changed both the technology and business of 'Television' as we have grown to known it. US DTV, encompassing as it does a wide variety of 'voluntary' signal formats, presents today's broadcaster with an unparalleled choice of the 'right tool for the job.' This paper will explore the technical aspects of some of those choices and the potential for DTV equipment application to non-broadcast environments.

  10. Some Aspects of Testing Process for Transport Streams in Digital Video Broadcasting

    CERN Document Server

    Arsinte, Radu

    2008-01-01

    This paper presents some aspects related to the DVB (Digital Video Broadcasting) investigation. The basic aspects of DVB are presented, with an emphasis on DVB-T version of standard. The main purpose of this research is to analyze the way that the transmission of the transport streams is realized in case of the Terrestrial Digital Video Broadcasting (DVB-T). To accomplish this, first, Digital Video Broadcasting standard is presented, and then the main aspects of DVB testing and analysis of the transport streams are investigated. The paper presents also the results obtained using two programs designed for DVB analysis: Mosalina and TSA.

  11. 75 FR 17874 - Digital Audio Broadcasting Systems and Their Impact on the Terrestrial Radio Broadcast Service

    Science.gov (United States)

    2010-04-08

    ... of 18 broadcasters that operate over 1200 commercial and noncommercial educational (NCE) FM radio... commercial, religious, educational, and other radio stations.\\11\\ Radio broadcasting stations which primarily... Analyzer Database as of February 19, 2009, about 10,600 (96 percent) of 11,050 commercial radio stations...

  12. DIGITAL BROADCASTING and INTERACTIVE TELEVISION in DISTANCE EDUCATION: Digital And Interactive Television Infrastructure Proposol for Anadolu University Open Education Faculty

    Directory of Open Access Journals (Sweden)

    Reha Recep ERGUL

    2007-01-01

    Full Text Available Rapid changes and improvements in the communication and information technologies beginning from the midst of the 20th Century and continuing today require new methods, constructions, and arrangements in the production and distribution of information. While television having the ability of presenting complex or difficult to comprehend concepts, subjects, and experimental studies to learners from different points of view, supported by 2D or 3D graphics and animations with audio visual stimulators replaces its technology from analog to digital and towards digital-interactive, it has also begun to convert the broadcasting technology in Turkey in this direction. Therefore, television broadcast infrastructure of Anadolu University Open Education Faculty needs to be replaced with a digital and interactive one. This study contains basic concepts of digital and interactive broadcasting and the new improvements. Furthermore, it includes the approaches in the basis of why and how a digital television broadcasting infrastructure should be stablished.

  13. Marketing Digital Multimedia: nuevos formatos y tendencias

    Directory of Open Access Journals (Sweden)

    Irene Garcia Medina

    2011-12-01

    Full Text Available En un momento de grandes cambios y novedades tecnológicas se hace necesario un estudio donde se den a cono-cer las transformaciones del marketing a partir de la difusión de las tecnologías digitales, especialmente el diseño de estrategias específicas para los numerosos medios interactivos en línea.Así mismo se analizan las características y principios de las campañas en línea y de la producción publicitaria multimedia para medios interactivos.El propósito del estudio es conocer la evolución y las características de las marcas en línea y descubrir las carac-terísticas y el potencial del marketing viral así como de otras nuevas formas de comunicación colaborativa como las redes sociales, etc.

  14. Towards a multilingual, multimedia and multimodal digital library platform

    Institute of Scientific and Technical Information of China (English)

    HUANG Tie-jun; TIAN Yong-hong; WANG Chun-li; SHI Xiao-dong; GAO Wen

    2005-01-01

    The China-US Million Book Digital Library Project (Million Book Project) is an international cooperation program between China and the US. However, one million digitized books are considered not to be the ultimate goal of the project, but a first step towards universal access to human knowledge. In particular, there are four challenges about the new way to analyze,process, operate, visualize and interact with digital media resource in this library. To tackle these challenges, North China Centre of Million Book Project (in Chinese Academy of Sciences) has initiated several innovative research projects in areas such as multimedia content analysis and retrieval, bilingual services, multimodal information presentation, and knowledge-based organization and services. In this keynote speech, we simply review our work in these areas, and argue that by technological cooperation with these innovation research topics, the project will develop a top-level digital library platform for the million book library.

  15. Using MPEG- at the Consumer Terminal in Broadcasting

    Directory of Open Access Journals (Sweden)

    Lalmas Mounia

    2002-01-01

    Full Text Available The European Union IST research programme SAMBITS (System for Advanced Multimedia Broadcast and IT Services project is using Digital Video Broadcasting (DVB, the DVB Multimedia Home Platform (MHP standard, MPEG- and MPEG- in a studio production and multimedia terminal system to integrate broadcast data and Internet data. This involves using data delivery over multiple paths and the use of a back channel for interaction. MPEG- is being used to identify programme content and to construct queries to allow users to identify and retrieve interesting related content. Searching for content is being carried out using the HySpirit search engine. The paper deals with terminal design issues, the use of MPEG- for broadcasting applications and using a consumer broadcasting terminal for searching for material related to a broadcast.

  16. Transmission techniques for emergent multicast and broadcast systems

    CERN Document Server

    da Silva, Mario Marques; Dinis, Rui; Souto, Nuno; Silva, Joao Carlos

    2010-01-01

    Describing efficient transmission schemes for broadband wireless systems, Transmission Techniques for Emergent Multicast and Broadcast Systems examines advances in transmission techniques and receiver designs capable of supporting the emergent wireless needs for multimedia broadcast and multicast service (MBMS) requirements. It summarizes the research and development taking place in wireless communications for multimedia MBMS and addresses the means to improved spectral efficiency to allow for increased user bit rate, as well as increased capacity of the digital cellular radio network.The text

  17. Cross-layer design of LT codes and LDPC codes for satellite multimedia broadcast/multicast services

    Institute of Scientific and Technical Information of China (English)

    Wang Zhenbang; Wang Zhenyong; Gu Xuemai; Guo Qing

    2013-01-01

    According to large coverage of satellites, there are various channel states in a satellite broadcasting network. In order to introduce an efficient rateless transmission method to satellite multimedia broadcasting/multicast services with finite-length packets, a cross-layer packet transmis-sion method is proposed with Luby transform (LT) codes for efficiency in the network layer and low density parity check (LDPC) codes for reliability in the physical layer jointly. The codewords gen-erated from an LT encoder are divided into finite-length packets, which are encoded by an LDPC encoder subsequently. Based on noise and fading effects of satellite channels, the LT packets received from an LDPC decoder either have no error or are marked as erased, which can be mod-eled as a binary erasure channels (BECs). By theoretical analysis on LT parameters and LDPC parameters, the relationships between LDPC code rates in the physical layer and LT codes word lengths in the network layer are investigated. With tradeoffs between the LT codes word lengths and the LDPC code rates, optimized cross-layer solutions are achieved with a binary search algo-rithm. Verified by simulations, the proposed solution for cross-layer parameters design can provide the best transmission mode according to satellite states, so as to improve throughput performance for satellite multimedia transmission.

  18. Channel Estimation Methods of Digital Television Terrestrial Broadcasting%地面数字电视广播的信道估计算法

    Institute of Scientific and Technical Information of China (English)

    杨知行; 王军; 潘长勇; 杨林

    2002-01-01

    本文在简介地面数字电视广播(Digital Television Terrestrial Broadcasting,DTTB)的发展及其信道特点的基础上,描述了国外现有的DTTB传输标准和清华大学数字电视传输技术研发中心提出的DMB-T(Terrestrial Digital Multimedia Television Broadcasting)所采用的信道估计算法,并对以上信道估计性能进行比较,证明DMB-T信道估计算法受高斯噪声和时变信道估计的影响更小,而且算法实现更简单.

  19. IMPLEMENTATION OF DIGITAL LEARNING USING INTERACTIVE MULTIMEDIA IN EXCRETORY SYSTEM WITH VIRTUAL LABORATORY

    OpenAIRE

    Heru Setiawan; Wiwi Isnaeni; F. Putut Martin Herry Budijantoro; Aditya Marianti

    2015-01-01

    The aim of this study are (1) Developing an interactive multimedia with virtual laboratory in excretory system for senior high school students (2) determine the eligibility of digital multimedia of excretory system (3) determine the effectivity of digital learning using interactive multimedia to improve student’s achievement and student activities of excretory system. This research was conducted in senior high school in Indonesia at SMA 1 Jepon, Blora for 2 month. The research approach using ...

  20. Improving Semantic Search in Digital Libraries Using Multimedia Analysis

    Directory of Open Access Journals (Sweden)

    Ilianna Kollia

    2012-04-01

    Full Text Available Semantic search of cultural content is of major importance in current digital libraries, such as in Europeana. Content metadata constitute the main features of cultural items that are analysed, mapped and used to interpret users' queries, so that the most appropriate content is selected and presented to the users. Multimedia, especially visual, analysis, has not been a main component in these developments. This paper presents a new semantic search methodology, including a query answering mechanism which meets the semantics of users' queries and enriches the answers by exploiting appropriate visual features, both local and MPEG-7, through an interweaved knowledge and machine learning based approach. An experimental study is presented, using content from the Europeana digital library, and involving both thematic knowledge and extracted visual features from Europeana images, illustrating the improved performance of the proposed semantic search approach.

  1. Technological characteristics of digital video broadcasting: Handheld standard DVB-H

    Directory of Open Access Journals (Sweden)

    Andreja B. Samčović

    2011-07-01

    Full Text Available This paper gives an overview of the Digital Video Broadcasting - Handheld standard DVB-H, as a part of the DVB Project. This standard is based on the previous standard DVB-T, which was developed for the terrestrial digital television. The ways of DVB-H signal transmission are also described. Development of advanced technology enabled the digital video broadcasting over wireless portable terminals. This paper discusses the key technological features of the DVB-H standard, such as: time slicing, forward error correction, 4K mode and in-depth interleavers.

  2. Wireless data transmission through in-band on-channel digital audio broadcasting

    Science.gov (United States)

    Vigil, A. J.

    1995-12-01

    USA Digital Radio (USADR) is finalizing the development of new state-of-the-art formats for in-band on-channel (IBOC) delivery of digital audio broadcasting (DAB). USADR's IBOC DAB systems are designed for top-notch digital audio delivery as well as enhanced ancillary data transmission capabilities. USADR's AM and FM IBOC DAB systems employ MUSICAMR source encoding as well as innovative modulation techniques which address the various radio channel impairments characteristic of AM and FM band propagation. The USADR IBOC DAB systems are designed to be backwards compatible with conventional AM and FM broadcasting for a seamless and cost-effective transition to DAB.

  3. Broadcasting towards Local: Digital local broadcasting put to the test of Midi-Pyrénées (In French)

    OpenAIRE

    Simoulin, Vincent; Audrey VERGNES (LEREPS-GRES)

    2004-01-01

    This paper deals with the difficulties the digital local broadcasting is presently meeting to stand out. Through the study of the audio-visual field in Midi-Pyrénées, it shows that these ones are not only of commercial or technical kind, but are also linked to the lack of a true local governance in this area. However, the analysis also point to a relative blossoming of the local channels, of which some have succeeded in developing either national or even international partnerships, or bonds w...

  4. Several of the Characteristics of Digital Broadcasting Technology and Its Application%几种数字广播技术的特点及其应用

    Institute of Scientific and Technical Information of China (English)

    毛学英

    2011-01-01

    目前数字广播技术发展迅速,为此介绍国际上几种发展较为成熟的数字广播,如数字声音广播(DAB)、数字多媒体广播(DMB)、数字卫星声音广播(DSB)、数字调幅声音广播(DRM)等,尤其是网上数字广播利用互联网的优势,实现了全球覆盖,受众自由选择节目,扩展了信息容量,实现了同步交流,极大地拓展了广播的功能,展现出美好前景。%To help you understand the current situation the development of digital broadcasting,we are now more developed several international digital broadcasting-digital audio broadcasting(DAB),Digital Multimedia Broadcasting(DMB),digital satellite sound broadcasting(DSB),digital AM Audio broadcasting(DRM) to do some simple introduction.

  5. Ambiguity Function Analysis and Processing for Passive Radar Based on CDR Digital Audio Broadcasting

    Directory of Open Access Journals (Sweden)

    Zhang Qiang

    2015-01-01

    Full Text Available China Digital Radio (CDR broadcasting is a new standard of digital audio broadcasting of FM frequency (87–108 MHz based on our research and development efforts. It is compatible with the frequency spectrum in analog FM radio and satisfies the requirements for smooth transition from analog to digital signal in FM broadcasting in China. This paper focuses on the signal characteristics and processing methods of radio-based passive radar. The signal characteristics and ambiguity function of a passive radar illumination source are analyzed. The adverse effects on the target detection of the side peaks owing to cyclic prefix, the Doppler ambiguity strips because of signal synchronization, and the range of side peaks resulting from the signal discontinuous spectrum are then studied. Finally, methods for suppressing these side peaks are proposed and their effectiveness is verified by simulations.

  6. A Study on Digital Video Broadcasting to a Handheld Device (DVB-H), Operating in UHF Band

    CERN Document Server

    Masood, Farhat

    2011-01-01

    In this paper, we will understand that the development of the Digital Video Broadcasting to a Handheld (DVB-H) standard makes it possible to deliver live broadcast television to a mobile handheld device. Building upon the strengths of the Digital Video Broadcasting - Terrestrial (DVB-T) standard in use in millions of homes, DVB-H recognizes the trend towards the personal consumption of media.

  7. 37 CFR 258.4 - Royalty fee for secondary transmission of digital signals of broadcast stations by satellite...

    Science.gov (United States)

    2010-07-01

    ... transmission of digital signals of broadcast stations by satellite carriers. 258.4 Section 258.4 Patents... AND PROCEDURES ADJUSTMENT OF ROYALTY FEE FOR SECONDARY TRANSMISSIONS BY SATELLITE CARRIERS § 258.4 Royalty fee for secondary transmission of digital signals of broadcast stations by satellite carriers....

  8. Digital terrestrial experimental television broadcasting studio system; Chijo digital jikken hoso soshutsu kiki

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Ahead of the start of the full digital terrestrial broadcasting scheduled for fiscal 2003, the Ministry of Posts and Telecommunications structured experimental systems in seven areas over the nation's land. The Company has received orders for four areas, and developed and supplied the pieces of equipment and devices. The system consists mainly of the following components: (1) an encoder to compress image signals into the moving picture experts Group 2 (MPEG2) signals; (2) a rate-free matrix to select signals for images and MPEG2 signals (an assembly of changeover switches); (3) a multiplexing device to multiplex MPEG2 signals; (4) a multi-rate server to accumulate and regenerate the MPEG2 signals; (5) an orthogonal frequency division multiplex (OFDM) modulator to modulate the multiplexed MPEG2 signals; (6) a splicer to switch the MPEG2 signals without interruption; and (7) an integrated control system to control MPEG2 devices. (translated by NEDO)

  9. Basic science in digital imaging: digital dynamic radiography, multimedia, and their potential uses for orthopaedics and arthroscopic surgery.

    Science.gov (United States)

    Pavlovich, Rafael Iñigo; Vazquez-Vela, Gonzalo; Pardinas, Javier Lozano; Bustos Villarreal, Jose Maria; Rico, Eduardo Carriedo; de la Mora Behar, Gustavo

    2002-01-01

    In this article, we discuss the different types of up-to-date tools available to understand multimedia and its applications, imaging manipulation, digital video, and new approaches to surgical planning, digital dynamic radiography, and patient education aided by digital technology.

  10. ESA personal communications and digital audio broadcasting systems based on non-geostationary satellites

    Science.gov (United States)

    Logalbo, P.; Benedicto, J.; Viola, R.

    1993-01-01

    Personal Communications and Digital Audio Broadcasting are two new services that the European Space Agency (ESA) is investigating for future European and Global Mobile Satellite systems. ESA is active in promoting these services in their various mission options including non-geostationary and geostationary satellite systems. A Medium Altitude Global Satellite System (MAGSS) for global personal communications at L and S-band, and a Multiregional Highly inclined Elliptical Orbit (M-HEO) system for multiregional digital audio broadcasting at L-band are described. Both systems are being investigated by ESA in the context of future programs, such as Archimedes, which are intended to demonstrate the new services and to develop the technology for future non-geostationary mobile communication and broadcasting satellites.

  11. ESA personal communications and digital audio broadcasting systems based on non-geostationary satellites

    Science.gov (United States)

    Logalbo, P.; Benedicto, J.; Viola, R.

    Personal Communications and Digital Audio Broadcasting are two new services that the European Space Agency (ESA) is investigating for future European and Global Mobile Satellite systems. ESA is active in promoting these services in their various mission options including non-geostationary and geostationary satellite systems. A Medium Altitude Global Satellite System (MAGSS) for global personal communications at L and S-band, and a Multiregional Highly inclined Elliptical Orbit (M-HEO) system for multiregional digital audio broadcasting at L-band are described. Both systems are being investigated by ESA in the context of future programs, such as Archimedes, which are intended to demonstrate the new services and to develop the technology for future non-geostationary mobile communication and broadcasting satellites.

  12. Apache cluster in multimedia broadcast content management platform%Apache集群在多媒体内容播控管理平台上的应用*

    Institute of Scientific and Technical Information of China (English)

    张小锋; 朱晓民

    2013-01-01

    随着终端用户的增加,多媒体内容播控管理平台对高访问量、高并发的需求越来越高。本文首先介绍了Apache集群的原理,然后将其应用于多媒体内容播控管理平台中,通过均衡负载,减轻了服务器的负担,提高了响应速度。%With the increasing of the end users, the multimedia broadcast content management platform requires web service with higher speed and better performance. This paper ifrst introduces the principle of the Apache cluster, and then uses the techenique in multimedia broadcast content management platform. Through balancing the load of web servers, it can reduce the burden of server and improve the response speed.

  13. 47 CFR 73.674 - Digital television transition notices by broadcasters.

    Science.gov (United States)

    2010-10-01

    ... with respect to its analog channel and its primary digital stream. (2) Any Public Service Announcement... news programs, or broadcast in other ways that the station determines will be most helpful to consumers... general and, in particular, if the station is changing channels or signal direction. (ii)...

  14. 77 FR 9187 - Carriage of Digital Television Broadcast Signals: Amendment to the Commission's Rules

    Science.gov (United States)

    2012-02-16

    ... COMMISSION 47 CFR Part 76 Carriage of Digital Television Broadcast Signals: Amendment to the Commission's...). See Electronic Filing of Documents in Rulemaking Proceedings, 63 FR 24121 (1998). \\1\\ 47 CFR 1.1200 et..., large print, electronic files, audio format), send an email to fcc504@fcc.gov or call the...

  15. Research and development report. Digital audio broadcasting: Comparison of coverage at Band 2 and Band 3

    Science.gov (United States)

    Pullen, I. R.; Doherty, P. J.; Maddocks, M. C. D.

    A Digital Audio Broadcasting (DAB) system capable of reliable reception in vehicles and portables has been developed by the EUREKA 147 project. This report describes a set of experiments performed to compare the coverage area when radiating a DAB signal of equal power in Band 2 and Band 3.

  16. Video Composer and Live Video Conductor: Future Professions for the Interactive Digital Broadcasting Industry

    Directory of Open Access Journals (Sweden)

    Stefan M. Grünvogel

    2007-07-01

    Full Text Available Innovations in hardware and network technologies lead to an exploding number of non-interrelated parallel media streams. Per se this does not mean any additional value for consumers. Broadcasting and advertisement industries have not yet found new formats to reach the individual user with their content.In this work we propose and describe a novel digital broadcasting framework, which allows for the live staging of (mass media events and improved consumer personalisation. In addition new professions for future TV production workflows which will emerge are described, namely the ′video composer′ and the ′live video conductor′.

  17. Storage and distribution system for multimedia information

    Science.gov (United States)

    Murakami, Tokumichi

    1994-06-01

    Recent advances in technologies such as digital signal processing, LSI devices and storage media have led to an explosive growth in multimedia environment. Multimedia information services are expected to provide an information-oriented infrastructure which will integrate visual communication, broadcasting and computer services. International standardizations in video/audio coding accelerate permeation of these services into society. In this paper, from trends of R & D and international standardization in video coding techniques, an outline is given of a storage and distribution system for multimedia information, and a summary of the requirements of digital storage media.

  18. Experimental Research of HF Passive Radar Based on DRM Digital AM Broadcasting

    Directory of Open Access Journals (Sweden)

    Wan Xian-rong

    2012-03-01

    Full Text Available This paper gives the experimental research of HF Passive Bistatic Radar (HFPBR based on Digital Radio Mondiale (DRM digital AM broadcasting that have been first carried out in China, using the newly-developed all-digital active/passive integrated HF surface wave radar system. The principle, key techniques, experimental equipment, and preliminary results are introduced about this new radar system. Based on analysis of the measurement data, experimental results under different scenarios including surface-wave, sky-wave, and hybrid sky-surface propagation modes are presented, which have proved, for the first time worldwide, the technical feasibility of using DRM broadcasting signal for over-the-horizon detection by field experiment and formed the theoretical and experimental basis for the further development of HFPBR.

  19. Becoming a Digital Designer A Guide to Careers in Web, Video, Broadcast, Game and Animation Design

    CERN Document Server

    Heller, Steven

    2011-01-01

    From the author of the bestselling Becoming a Graphic Designer and the editor of Adobe Think Tank comes this clear overview of the field of digital design This complete guide to the evolving digital design disciplines opens the door to today's most sought-after job opportunities in Web, video, broadcast, game, and animation design. Featuring over 45 interviews with leading digital designers and more than 225 illustrations, the book covers everything from education and training, design specialties, and work settings to preparing an effective portfolio and finding a job. This is an ideal startin

  20. A smartcard conditional access interface scheme for conditional access subsystem separation in digital TV broadcasting

    Institute of Scientific and Technical Information of China (English)

    XIE Qiang; ZHENG Shi-bao; YU Xiao-jing

    2006-01-01

    Conditional access system (CAS) is a key technical component in digital TV broadcasting through which TV operators manage the appropriate rights of different subscribers in order to protect their commercial benefits. The normal digital TV receiver can only receive and decode the pay TV programs scrambled by one specific CAS. In this paper, the authors proposed a smartcard conditional access interface (SCAI) scheme in order to make the digital TV receiver be a common receiving platform independent of any specific CAS employed at the broadcasting head-end. As a result, it only needs to include a common conditional access software package (CCAP) without any requirement of hardware modification in the receiver. Comparison between the two mentioned DVB-CI-based schemes showed that the cost of such kind receiver is greatly reduced. The main design points of the proposed scheme and its reference implementation's architecture are presented in this paper. This scheme is also one of the candidate national standards for Chinese digital TV broadcasting industry.

  1. IMPLEMENTATION OF DIGITAL LEARNING USING INTERACTIVE MULTIMEDIA IN EXCRETORY SYSTEM WITH VIRTUAL LABORATORY

    Directory of Open Access Journals (Sweden)

    Heru Setiawan

    2015-12-01

    Full Text Available The aim of this study are (1 Developing an interactive multimedia with virtual laboratory in excretory system for senior high school students (2 determine the eligibility of digital multimedia of excretory system (3 determine the effectivity of digital learning using interactive multimedia to improve student’s achievement and student activities of excretory system. This research was conducted in senior high school in Indonesia at SMA 1 Jepon, Blora for 2 month. The research approach using Educational Research and development including: (1research and information collecting (2planning (3 develop a preliminary form of product (4 preliminary field testing, validation of media by experts. (5 main product revision, (6field testing (7operational product revision (8 operational field testing, (9 the final product revision. The results showed that digital media of excretory system with virtual lab is outstanding criteria (91.17% based on 2 expert validation result. Then on prelimenary field testing, the students give outstanding criteria (84.38%, and operation field testing is 92.19%. Digital learning using interactive multimedia also improve student activities, students who achieve the active criteria is 90,63%. Based on the results of research and discussion, can be concluded that digital multimedia of excretory system is very eligible, get possitive response from students and teacher, and effective to improve student achievement and student activity as excretory system media in senior high school.

  2. Digital broadcasting set to transform communication landscape by 2015: RRC-06

    CERN Multimedia

    2006-01-01

    "The conclusion of ITU's Regional Radiocommuncation Conference (RRC-06) in Geneva saw the signing of a treaty agreement that is a major step in implementing World Summit on the Information Society objectives. The digitalization of broadcasting in Europe, Africa, Middle East and the Islamic Republic of Iran by 2015 represents a major landmark towards establishing a more equitable, just and people-centred Information Society." (2 pages)

  3. Internal Antenna for Digital Video Broadcasting-Handheld (DVB-H) Application

    Science.gov (United States)

    Yu, Yeonsik; Kim, Jeongpyo; Choi, Jaehoon

    An internal antenna with a system ground for digital video broadcasting-handheld (DVB-H) service is proposed. The proposed antenna consists of a main patch with a two-step slit, two additional elements, and a system ground. The antenna has a small volume, 36mm×11mm×6mm, and an average gain of -2.22dBi to -0.06dBi over the DVB-H band.

  4. The Relation Between Socio-Economic Characteristics and the Innovation Decision Making of Digital Television Broadcasts

    Directory of Open Access Journals (Sweden)

    Haryati Haryati

    2013-11-01

    Full Text Available Migration from analog to digital technology, requires a lot of preparation, both from the side of the device, the regulation of the broadcasting industry, and the society. This study refers to the Diffusion of Innovations theory (the theory of Diffusion of Innovation (Rogers, 1986 that try to explain how an innovation (technology can be accepted into the community, through a process of decision. The aim of the research is to find out the relationship between socio-economic characteristics of the innovation and decision-making broadcast of digital television. This research uses a quantitative approach with descriptive methods aim to find out the relationship between socio-economic characteristics of the innovation and decision-making broadcast of digital television. The research was carried out in seven counties/cities in West Java Province and Banten Province. The selection of samples is carried out by Multistage Random Cluster Sampling. The number of samples as many as 813 people assigned by Proportional Sampling techniques, with the character category of respondents age 15 years until 64 years. Significance test results with the method at the rate of 5% Pearson pointed out that, the relationship between innovation decision-making variables with socio-economic characteristics on three aspects, namely, education, income, and spending is weak and insignificant, while on access to information, the value of relationships and significant. This suggests the necessity of strengthening the capacity of absorption of community efforts in the face of digital broadcast television, can be done by fixing the value of any existing components on the operational level. As a priority, is how the effort to improve the economy of society, especially in terms of education, income, and expenditure permonth.

  5. Danka Multimedia: A cooperative expanding in the new digital economy

    Directory of Open Access Journals (Sweden)

    MAITE RUIZ ROQUEÑI

    2002-06-01

    Full Text Available Danka Multimedia is a cooperative society, which offers integral communication services due to the areas of Marketing and Formation by means of new technologies. Because of the sector in which its activity takes place, as well as its own business vocation, Danka Multimedia has shown from its beginnings a gradual growth. This growing is increasingly making progress, and, as a consequence of this feature, the firm has to clash with some problems. These conflicts caused by the growth, which affect to every form of business organization, are more important in the case of Danka Multimedia because of its corporate personality, its culture and values, and the sector in which Danka Multimedia develops its activity. The Danka Multimedia’s growing management is the central issue with what this case deals.

  6. Storage format for personalized broadcasting content consumption

    Science.gov (United States)

    Jin, Sung Ho; Jang, Jea-Seok; Min, Hyun-Seok; Ro, Yong Man; Kim, Hui Yong

    2007-01-01

    In this paper, we propose a storage format which binds digital broadcasts with related data such as TV-Anytime metadata, additional multimedia resources, and personal viewing history. The goal of the proposed format is to make it possible to offer personalized content consumption after recording broadcasting contents to storage devices, e.g., HD-DVD and Blu-ray Disc. To achieve that, we adopt MPEG-4 file format as a container and apply a binary format for scenes (BIFS) for representing and rendering personal viewing history. In addition, TV-Anytime metadata is used to describe broadcasts and to refer to the additional multimedia resources, e.g, images, audio clips, and short video clips. To demonstrate the usefulness of the proposed format, we introduce an application scenario and test it on that scenario.

  7. Coverage aspects of a single frequency network designed for digital audio broadcasting

    Science.gov (United States)

    Bell, C. P.; Williams, W. F.

    Since the early 1960s, the VHF/FM pilot tone system has been used by broadcasters to supply high quality stereophonic programs to listeners equipped with fixed receivers and modest gain directional antennas mounted externally at a height of about ten meters above ground levels. More recently, with the advent of improved radio receivers and digital technology in the reproduction industry, the broadcasters' target audience has changed and listeners now expect high fidelity reception, comparable to CD quality, on their portable and mobile receivers. In many areas, the demand for high quality can be supplied using the existing VHF/FM networks. There are, however, areas where good portable and mobile reception cannot be obtained, due to shadowing and multipath. This report discusses the coded orthogonal frequency division multiplex (COFDM) channel coding and modulation system developed within the Eureka 147 digital audio broadcasting (DAB) project, which is able to overcome the problems of multipath. Indeed, it can make use of multipath signals. This fact leads to the concept of a Single Frequency Network (SFN) where a single DAB COFDM frequency block can be used to supply five or six programs to a whole country. The derivation of minimum required field strength levels for DAB COFDM signals, and the allowances required for high percentage location coverage, necessary for digital systems, are presented together with a spectrum efficiency comparison between SFN and VHF/FM networks. Theoretical lattice planning, using the CCIR Rec. 370 prediction method, is used initially to illustrate the SFN concept and suggest required effective radiated powers. The results of SFN coverage studies for the UK, using existing broadcast transmitter sites and utilizing both the Rec. 370 and the BBC terrain data based prediction methods, are given. In addition, a possible four frequency block SFN plan for Europe is discussed. The Report concludes that, in comparison, networks using the

  8. Connections for the Digital Age Multimedia Communications for Mobile, Nomadic and Fixed Devices

    CERN Document Server

    Carne, E Bryan

    2011-01-01

    Explores and analyzes past and current technologies and trends in multimedia communication Digital natives-those persons born in the digital age-have an ever-widening range of wireless-enabled devices at their disposal. They are the drivers of multimedia communications, continually seeking out the technologies and distribution channels that best match their needs. This book outlines the changes in telecommunications that are occurring to meet these needs. It addresses the continually increasing requirement to provide connections that make the electronic encounter as natural and convenient as p

  9. Digital audio broadcasting by satellite utilising Trellis-Coded Quasi-Orthogonal Code Division Multiplexing

    Science.gov (United States)

    de Gaudenzi, R.

    This paper introduces trellis-coded quasi-orthogonal code division multiplexing (TCQO-CDM) as a transmission technique for digital audio broadcasting. The proposed technique performs well over the satellite L-band fading channel and also in the terrestrial gap-filter type of transmission. Preliminary satellite link budgets based on extensive computer-simulation results are provided. The capacity achieved by the terrestrial single-frequency gap-filler network by using the same satellite frequency and user receiver is also discussed. Numerical results show that a remarkable overall capacity can be achieved by using HEO satellite orbits complemented by a terrestrial gap-filler. A variety of transmission rates and hence broadcasting services can be realized. It is shown that a geostationary satellite can provide limited service availability and limited capacity to mobile users, but can also be used for experimental purposes.

  10. Multimedia

    Institute of Scientific and Technical Information of China (English)

    Andrew; Scales; 张少林

    1997-01-01

    Imagine a world where your TV, telephone and computer areall one system. You have a central central box connected to thetelephone line and several screens in different rooms around yourhome or office. You can speak to these screens and call up whateverservices you like-services such as movies, videophone, homeshopping, telebanking, interactive video games and English lessons. This is the world of multimedia, a world where books, text,

  11. English Teaching and New Literacies Pedagogy: Interpreting and Authoring Digital Multimedia Narratives. New Literacies and Digital Epistemologies. Volume 61

    Science.gov (United States)

    Unsworth, Len, Ed.; Thomas, Angela, Ed.

    2014-01-01

    "English Teaching and New Literacies Pedagogy: Interpreting and Authoring Digital Multimedia Narratives" is about the fusion of media and narrative, and explores theoretical and practical dimensions of young people's engagement with contemporary forms of text. It showcases a range of critical interpretative approaches for integrating…

  12. Digital Video/Multimedia Portfolios as a Tool To Develop Reflective Teacher Candidates.

    Science.gov (United States)

    Spurgeon, Sheila; Bowen, James L.

    This research examined the effects of a process of digital video editing used to create multimedia portfolio has on the quality of teacher candidates' critical reflections. The target population was Northwestern Oklahoma State University teacher candidates. Subjects were 22 student teachers in the fall 2001. Subjects were randomly assigned to one…

  13. The design and implementation of an infrastructure for multimedia digital libraries

    NARCIS (Netherlands)

    Vries, de A.P.; Eberman, B.; Kovalcin, D.E.

    1998-01-01

    We develop an infrastructure for managing, indexing and serving multimedia content in digital libraries. This infrastructure follows the model of the Web, and thereby is distributed in nature. We discuss the design of the Librarian, the component that manages meta data about the content. The managem

  14. Creation and Long-term Preservation of Digital Multimedia Resources:Some Preliminary Practices

    Institute of Scientific and Technical Information of China (English)

    ZHAO BAOYING; LUO YUNCHUAN

    2008-01-01

    This paper gives a comprehensive introduction of National Cultural Information Resources Sharing Project.It discusses the best practices in creation and long-term preservation of multimedia digital resources,and recommends solutions to the key issues in resource selection,standards & specifications and copyright.

  15. 75 FR 78269 - Vehicular Digital Multimedia Evidence Recording System (VDMERS) Standard for Law Enforcement

    Science.gov (United States)

    2010-12-15

    ... Standard for Law Enforcement. SUMMARY: In an effort to obtain comments from interested parties, the U.S... representatives, law enforcement agencies and organizations, research, development and scientific communities, and... of Justice Programs Vehicular Digital Multimedia Evidence Recording System (VDMERS) Standard for Law...

  16. Novel uninterruptible self-determinate hybrid high-speed multimedia fiber optic wireless secure digital network

    Science.gov (United States)

    Lindsey, Lonnie

    2000-08-01

    One key to successful digital battlespace management is communications management. HF, UHF, VHF, CDMA, and SATCOM assets are difficult and complex to manage, and the modern digital battlespace adds new dimensions by including high volume multimedia transmissions, high-speed broadband data, and hyper-spectral sensor data. This environment requires more than the traditional voice transport-based communications system. The future sanctuary-based communication hub model will benefit from a novel uninterruptible self-determinate high bandwidth fiber optic system.

  17. Elvis Sings for the BBC: broadcast branding and digital media design

    OpenAIRE

    Grainge, Paul

    2010-01-01

    This essay uses a striking example of digital remix promotion - BBC Radio 2’s Elvis ad - to examine developments in the contemporary branding and broadcast environment. Developing work by John Caldwell, it examines the Elvis ad as a ‘deep text’, a promotionally reflexive articulation by media industries about the nature of corporate media identity and aesthetics. Suggestive of the BBC’s attempt since the late 1990s to make its brand ‘sing’, and relating specifically to the visualization of ra...

  18. Integration of multimedia content and e-learning resources in a digital library

    Science.gov (United States)

    Pascual, Mireia; Ferran, Núria; Minguillón, Julià

    2006-01-01

    In this paper we describe a proposal for multimedia and e-learning content description based on standards interoperability within a digital library environment integrated in a virtual campus. In any virtual e-learning environment, a complex scenario which usually includes a digital library or, at least, a repository of learning resources, different levels of description are needed for all the elements: learning resources, multimedia content, activities, roles, etc. These elements can be described using library, e-learning and multimedia standards, depending on the specific needs of each particular scenario of use, but this might lead to an undesirable duplication of metadata, and to inefficient content queries and maintenance. Furthermore, there is a lack of semantic descriptions which makes all these contents merely become digital objects in the digital library, without exploiting all the possibilities in a e-learning virtual environment. Due to its flexibility and completeness, we propose to use the MPEG-7 standard for describing all the learning resources in the digital library, combined with the use of an ontology for a formal description of the learning process. The equivalences of Dublin Core, LOM and MPEG-7 standards are outlined, and the requirements of a proposal for a MPEG-7 based representation for all the contents in the digital library and the virtual classroom are described. The intellectual property policies for content sharing both within and among organizations are also addressed. With such proposal, it would be possible to build complex multimedia courses from a repository of learning objects using the digital library as the core repository.

  19. Multimedia

    Directory of Open Access Journals (Sweden)

    Eva Milková

    2015-01-01

    Full Text Available This paper is based on many years’ experience with multimedia applications supporting the area of computer science education and it could serve as an inspirational material directed to all educators developing students’ algorithmic thinking. Education of subjects related with computer science is from the perspective of other for centuries taught subjects, still in its infancy. Even nowadays a teaching method aimed at developing algorithmic thinking of students is still the subject of extensive discussions and teachers are looking for different ways on how to access it to students. Next to the educational approach to this base of computer science it is also important to find a suitable support for students’ self-learning. Multimedia applications give teachers an excellent chance to demonstrate and visualize the subject matter more clearly and comprehensibly, as well as also enabling them to prepare study material for students which optimizes their study habits. Along with large software products developed by a team of professionals there are also various smaller programs dealing with objects appropriate to course subject matter created on a script given by the teacher with regard to students’ needs. In the paper such application prepared to intensify self-preparation of students in subjects developing algorithmic thinking is introduced and its benefit discussed. Animations useful to be used as an introductory complement to lectures are introduced as well. At the end advantages of the professional virtual learning environment containing such study material are mentioned.

  20. An Overview on Development of Passive Radar Based on the Low Frequency Band Digital Broadcasting and TV Signals

    Directory of Open Access Journals (Sweden)

    Wan Xian-rong

    2012-06-01

    Full Text Available Starting from the detection principle and characteristics of passive radar, this paper describes the development of passive radar based on the low frequency band (HF/VHF/UHF digital broadcasting and TV signal. Based on the radio coverage ratio and technical features of digital broadcasting and TV signals, the research status in abroad, especially in Europe, is introduced at first, on experimental systems, technical parameters, and comparative experiments. Then the latest development of passive radars, in different frequency bands in China, both theory and experimental study are presented. Followed is the commentary on the key techniques and problems of Digital Broadcasting-based Passive Radar (DBPR, including the waveform’s properties and its modification, reference signal extraction, multipath clutter rejection, target detection, tracking, and fusion as well as real-time signal processing. Finally, the prospects of development and application of this kind of passive radar are discussed.

  1. Digital audio broadcasting: Measuring techniques and coverage performance for a medium power VHF single frequency network

    Science.gov (United States)

    Maddocks, M. C. D.; Eng, C.; Pullen, I. R.; Green, J. A.

    1995-02-01

    The advent of digital formats such as CD has created demand for uniformly high audio quality from radio. In order to provide such high-quality stereo reception, a Digital Audio Broadcasting (DAB) system capable of reliable reception in vehicles and on portables has been developed by the European EUREKA 147 Project. As a VHF frequency allocation would appear most suitable for the introduction of terrestrial broadcasting of DAB in the United Kingdom, the BBC is undertaking a major experiment to test the EUREKA DAB system and to generate data to allow efficient planning of its transmitter network. A network of four, 1 kW e.r.p., VHF transmitters has been installed to cover the London area in England. This Report describes the experimental program and the rationale and measurement techniques behind it. The results show a wide-area coverage from the transmitter network which is in reasonable agreement with computer predictions. This indicates that the current transmitting and receiving equipment (built to the EUREKA specification) is operating in the way that would be expected from theoretical studies and simulation. The results also provide quantitative values which can be used for coverage prediction and for international co-ordination of services. Finally, the performance of the system demonstrates a number of the benefits of the EUREKA DAB system for mobile and portable reception.

  2. Digital Terrestrial Video Broadcast Interference Suppression in Forward-Looking Ground Penetrating Radar Systems

    Science.gov (United States)

    Rial, F. I.; Mendez-Rial, Roi; Lawadka, Lukasz; Gonzalez-Huici, Maria A.

    2014-11-01

    In this paper we show how radio frequency interference (RFI) generated by digital video broadcasting terrestrial and digital audio broadcasting transmitters can be an important noise source for forward-looking ground penetrating radar (FLGPR) systems. Even in remote locations the average interference power sometimes exceeds ultra-wideband signals by many dB, becoming the limiting factor in the system sensitivity. The overall problem of RFI and its impact in GPR systems is briefly described and several signal processing approaches to removal of RFI are discussed. These include spectral estimation and coherent subtraction algorithms and various filter approaches which have been developed and applied by the research community in similar contexts. We evaluate the performance of these methods by simulating two different scenarios submitted to real RFI acquired with a FLGPR system developed at the Fraunhofer Institute for High Frequency Physics and Radar Techniques (FHR), (GER). The effectiveness of these algorithms in removing RFI is presented using some performance indices after suppression.

  3. Predicted coverage of a COFDM single frequency network for UHF digital terrestrial TV broadcasting

    Science.gov (United States)

    Lee, M. B. R.

    The Coded Orthogonal Frequency Division Multiplex (COFDM) transmission system provides a very high degree of tolerance towards multipath interference. Three factors contribute towards this tolerance: the inclusion of a guard interval, coding to provide error correction and the division of the digital data amongst a very large number of low bit rate carriers. It follows from this that a national network of co-channel transmitters can be developed such that not only do neighboring transmitters not cause mutual interference but can combine in a constructive manner. This is the principle of the Single Frequency Network, or SFN. Experience with Digital Audio Broadcasting (DAB) suggests that an SFN could be utilized for Digital Video Broadcasting (DVB). Such a system would make very efficient use of the available UHF channels. The Report presents the results of coverage predictions performed for a network of 128 transmitters sited at the locations of existing high and medium power UK UHF broadcast transmitters. Predictions were carried out for a range of values of guard interval, and for both directional and omnidirectional receiving antennas. Use of COFDM and the latest data compression techniques allows a High Definition Television (HDTV) program to be transmitted in a standard UHF channel. However it will require a higher-order modulation scheme than is used for DAB. This will reduce the tolerance towards noise and interference. The guard interval may therefore have to be lengthened so that signals from more distant transmitters within the network arrive within the guard interval. The results of the predictions show that the ad hoc transmitter network examined will serve 90 percent or more of the UK population, using the same guard interval as has been chosen for Mode 1 of the Eureka DAB system, provided that a directional antenna is used. The directional antenna provides most of the extra protection required against interfering signals. The same coverage can be

  4. Performance of Superposition Coded Broadcast/Unicast Service Overlay System

    Science.gov (United States)

    Yoon, Seokhyun; Kim, Donghee

    The system level performance of a superposition coded broadcast/unicast service overlay system is considered. Cellular network for unicast service only is considered as interference limited system, where increasing the transmission power does not help improve the network throughput especially when the frequency reuse factor is close to 1. In such cases, the amount of power that does not contribute to improving the throughput can be considered as “unused.” This situation motivates us to use the unused power for broadcast services, which can be efficiently provided in OFDM based single frequency networks as in digital multimedia broadcast systems. In this paper, we investigate the performance of such a broadcast/unicast overlay system in which a single frequency broadcast service is superimposed over a unicast cellular service. Alternative service multiplexing using FDM/TDM is also considered for comparison.

  5. Digital Radio Broadcasting using the mixed satellite/terrestrial approach: An application study

    Science.gov (United States)

    Paiement, Richard V.; Voyer, Rene; Prendergast, Doug

    1995-01-01

    Digital radio broadcasting (DRB) is a new service that offers CD quality stereo programs to fixed, portable and mobile receivers. Terrestrial DRB in Canada is considered as a replacement technology for existing AM and FM services, and it is expected to start up in 1996. Canada currently favors Eureka 147 technology operating in the L-band, in the 1452-1492 MHz frequency band allocated during WARC'92 for DRB. Terrestrial DRB delivery is appropriate for small to medium sized service areas, such as cities and their associated suburbs. For larger areas such as provinces, as well as for sparsely populated areas such as the regions in northern Canada, satellite delivery is more appropriate. The mixed approach is based on both satellite and terrestrial broadcasting services using a common frequency band. Spectrum efficiency is achieved through close coordination of both service types, to achieve proper frequency sharing and spectrum re-use. As well, use of a common transmission format by both types of services allows for a common receiver. This mixed satellite/terrestrial approach to DRB is being seriously considered in Canada and in other countries. This paper studies the feasibility of such a mixed satellite/terrestrial DRB system. It looks at possible coverage scenarios for Canada, and at the satellite and receiver technology requirements.

  6. Subjective and Objective Assessment of Perceived Audio Quality of Current Digital Audio Broadcasting Systems and Web-Casting Applications

    NARCIS (Netherlands)

    Pocta, P.; Beerends, J.G.

    2015-01-01

    This paper investigates the impact of different audio codecs typically deployed in current digital audio broadcasting (DAB) systems and web-casting applications, which represent a main source of quality impairment in these systems and applications, on the quality perceived by the end user. Both subj

  7. Broadcasting and Culture. Cultural Channels and its impact in Western Europe digital TV platforms

    Directory of Open Access Journals (Sweden)

    Dr. Carles Llorens Maluquer

    2007-01-01

    Full Text Available From the two classical definitions of culture - popular and elitist-, the reality of cultural channels is analysed through the five most important television markets in Western Europe, - Germany, United Kingdom, France, Italy and Spain-, and their free-to-air TV offer and main multichannel digital television platforms. The fifty channels found are classified according to the scope of the content (generalist or thematic and their ownership (public or private. These classifications show that content-broad cultural channels are operated by Public Broadcasters Services, whereas private operators prefer thematic cultural channels. Finally, except for the case of ARTE channel, the only pan-European cultural channels are the United States subsidiaries, like Discovery Channel or National Geographic.

  8. New Methods of Stereo Encoding for FM Radio Broadcasting Based on Digital Technology

    Directory of Open Access Journals (Sweden)

    P. Stranak

    2007-12-01

    Full Text Available The article describes new methods of stereo encoding for FM radio broadcasting. Digital signal processing makes possible to construct an encoder with properties that are not attainable using conventional analog solutions. The article describes the mathematical model of the encoder, on the basis of which a specific program code for DSP was developed. The article further deals with a new method of composite clipping which does not cause impurities in the output spectrum, and at the same time preserves high separation between the left and right audio channels. The application of the new method is useful mainly where there are unwanted signal overshoots on the input of the stereo encoder, e.g., in case of signal transmission from the studio to the transmitter site through a route with psychoacoustic lossy compression of data rate.

  9. Digital audio broadcasting: Comparison of coverage at different frequencies and with different bandwidths

    Science.gov (United States)

    Maddocks, M. C. D.; Pullen, I. R.

    A Digital Audio Broadcasting (DAB) system capable of reliable reception in vehicles and portables has been developed by the Eureka 147 project. This Report describes a set of experiments performed to investigate the effect on the coverage area by changing the bandwidth of the DAB signal and its transmit frequency band. It is concluded that the choice of a bandwidth for the DAB signal of approximately 1.5 MHz is suitable. This is because it is sufficiently wideband to provide a significant benefit in reducing the location variation of the total received signal power, while being narrow enough to allow suitable channelization within the existing frequency bands. It is also concluded that a frequency allocation below Band IV would be more suitable in order to provide satisfactory coverage for all types of reception from terrestrial DAB transmitters. Above this frequency, the effects of clutter and terrain undulations appear to significantly increase the problems of providing uniform coverage at low antenna heights.

  10. Digital Television Broadcast System Design%数字电视播出系统设计

    Institute of Scientific and Technical Information of China (English)

    黄俊伟

    2014-01-01

    随着我国互联网的影响范围日益扩大,国内有线数字电视取得长足发展,但同样也面临着前所未有的机遇和挑战。对数字电视播出系统设计思路、硬盘部分设计和分控视音频系统的设计进行了探讨,以提高工作效率,推动数字电视的快速发展。%With the impact of widening the scope of the Internet in China, the domestic digital cable TV made considerable progress, but it also faces unprecedented opportunities and challenges. Digital television broadcast system design ideas, design of the hard part of the design and control video and audio systems were discussed in order to improve efficiency, promote the rapid development of digital TV.

  11. Dynamic Digital Maps as Vehicles for Distributing Digital Geologic Maps and Embedded Analytical Data and Multimedia

    Science.gov (United States)

    Condit, C. D.; Mninch, M.

    2012-12-01

    The Dynamic Digital Map (DDM) is an ideal vehicle for the professional geologist to use to describe the geologic setting of key sites to the public in a format that integrates and presents maps and associated analytical data and multimedia without the need for an ArcGIS interface. Maps with field trip guide stops that include photographs, movies and figures and animations, showing, for example, how the features seen in the field formed, or how data might be best visualized in "time-frame" sequences are ideally included in DDMs. DDMs distribute geologic maps, images, movies, analytical data, and text such as field guides, in an integrated cross-platform, web enabled format that are intuitive to use, easily and quickly searchable, and require no additional proprietary software to operate. Maps, photos, movies and animations are stored outside the program, which acts as an organizational framework and index to present these data. Once created, the DDM can be downloaded from the web site hosting it in the flavor matching the user's operating system (e.g. Linux, Windows and Macintosh) as zip, dmg or tar files (and soon as iOS and Android tablet apps). When decompressed, the DDM can then access its associated data directly from that site with no browser needed. Alternatively, the entire package can be distributed and used from CD, DVD, or flash-memory storage. The intent of this presentation is to introduce the variety of geology that can be accessed from the over 25 DDMs created to date, concentrating on the DDM of the Springerville Volcanic Field. We will highlight selected features of some of them, introduce a simplified interface to the original DDM (that we renamed DDMC for Classic) and give a brief look at a the recently (2010-2011) completed geologic maps of the Springerville Volcanic field to see examples of each of the features discussed above, and a display of the integrated analytical data set. We will also highlight the differences between the classic or

  12. Between Postage Stamps and Digitalization: The Changing Roles of Educational Broadcasting.

    Science.gov (United States)

    Fleisher, Frederic

    1995-01-01

    Provides a broadcasting practitioner's perspective of educational broadcasting in Europe, and how, with data compression, the emergence of more television channels can affect the educationalist and public service broadcasting. Discusses technological development, equal access to education, cultural maintenance, advertising, future outlooks, and…

  13. multimedia

    Directory of Open Access Journals (Sweden)

    Pedro Antonio Rojo Villada

    2005-01-01

    Full Text Available Las Nuevas Tecnologías de la Información (NTI constituyen uno de los principales centros de atención por parte de las grandes fortunas empresariales. Tal interés surge desde el instante en que toman conciencia de la imposibilidad de aislar las sofisticadas convergencias tecnológicas del impacto de los mensajes, cada vez más abundantes. En el grueso de las NTI ocupan el segmento estrella las aplicadas a la producción y difusión audiovisuales, caracterizadas por la búsqueda de sistemas de acceso instantáneo a la información, reduciendo al mínimo las limitaciones de la estructura lineal de la cinta de vídeo, y desarrollando sistemas de comprensión más eficaces en la utilización de grandes volúmenes informativos. Subrayamos los vocablos instantáneo y volúmenes porque ambos impactan en la médula del funcionamiento de los instrumentos de comunicación colectiva, segmento tradicionalmente autónomo y diferenciado de los servicios de telecomunicaciones, aunque en la era digital se ensaya el maridaje de ambos, mediante autopistas de la información, poderosas redes interactivas construidas para prestar servicios telefónicos y otros audiovisuales distintos.

  14. Digital Watermarking – A Solution for Copyright Protection of Multimedia Data

    Directory of Open Access Journals (Sweden)

    Nidhi Kandhil

    2012-04-01

    Full Text Available The recent progress in the digital multimedia technologies has offered any facilities in the transmission, reproduction & manipulation of data. However, this advancement has also brought thechallenge such as copyright protection for content providers. Digital Watermarking is one of the proposed solutions for copyright protection of multimedia data. This technique is better than Digital Signature and other methods because it does not increase overhead. Digital Watermarking is not an older Field. There are manyresearch are going in this field. Researchers have invented technique those increase the Security, Capacity and Imperceptibility of Watermarked Images. Here, in this Thesis our main focus is on providing robustness for web applications i.e. we provide the security to images those are stored in remote server so that unauthorized customer will not receive the image from server becausethe image is watermarked by using the Algorithm described in this research work and if the customer will hack the image then he / she will get the distorted image.

  15. 地面数字电视广播系统的研究%Terrestrial Digital TV Broadcast System Research

    Institute of Scientific and Technical Information of China (English)

    彭丹

    2008-01-01

    本文主要介绍了地面数字电视广播(Digital Television Terrestrial Broadcasting,DTTB)系统,在介绍国外现有的DTIB传输标准的基础上说明清华大学数字电视传输技术研发中心提出的DMB-T(Terrestrial Digital Multi-media/Television Broadcasting)标准[1].DMB-T系统采用了时域同步正交频分复用(TDS-OFDM)的多载波调制方式,适用于具有多径干扰和多普勒频移的地面数字电视广播传输信道.通过比较,DMB-T具有新的关键技术和优越的性能.

  16. METS as an 'Intermediary' Schema for a Digital Library of Complex Scientific Multimedia

    Directory of Open Access Journals (Sweden)

    Richard Gartner

    2012-09-01

    Full Text Available The use of the Metadata Encoding and Transmission Standard (METS schema as a mechanism for delivering a digital library of complex scientific multimedia is examined as an alternative to the Fedora Content Model (FCM. Using METS as an 'intermediary' schema, where it functions as a template which is populated with content metadata on-the-fly using an XSLT transformation, it is possible to replicate the flexibility of structure and granularity of FCM while avoiding its complexity and often substantial demands on developers.

  17. DIFFERENTIAL AMPLITUDE PHASE SHIFT KEYING:A NEW MODULATION METHOD FOR TURBO CODE IN DIGITAL RADIO BROADCASTING

    Institute of Scientific and Technical Information of China (English)

    KhalidH.Sayhood; WuLenan

    2003-01-01

    The multilevel modulation techniques of M-Differential Amplitude Phase Shift Keying(DAPSK)have been proposed in combination with Turbo code scheme for digital radio broad-casting bands below 30 MHz radio channel.Comparison of this modulation method with channel coding in an Additive White Gaussian Noise(AWGN)and mulit-path fading channels has been presented.The analysis provides an iterative decoding of the Turbo code.

  18. DIFFERENTIAL AMPLITUDE PHASE SHIFT KEYING:A NEW MODULATION METHOD FOR TURBO CODE IN DIGITAL RADIO BROADCASTING

    Institute of Scientific and Technical Information of China (English)

    Khalid H. Sayhood; Wu Lenan

    2003-01-01

    The multilevel modulation techniques of M-Differential Amplitude Phase Shift Keying (DAPSK) have been proposed in combination with Turbo code scheme for digital radio broadcasting bands below 30 MHz radio channel. Comparison of this modulation method with channel coding in an Additive White Gaussian Noise (AWGN) and multi-path fading channels has been presented. The analysis provides an iterative decoding of the Turbo code.

  19. Performance Analysis of Video Transmission Using Sequential Distortion Minimization Method for Digital Video Broadcasting Terrestrial

    Directory of Open Access Journals (Sweden)

    Novita Astin

    2016-12-01

    Full Text Available This paper presents about the transmission of Digital Video Broadcasting system with streaming video resolution 640x480 on different IQ rate and modulation. In the video transmission, distortion often occurs, so the received video has bad quality. Key frames selection algorithm is flexibel on a change of video, but on these methods, the temporal information of a video sequence is omitted. To minimize distortion between the original video and received video, we aimed at adding methodology using sequential distortion minimization algorithm. Its aim was to create a new video, better than original video without significant loss of content between the original video and received video, fixed sequentially. The reliability of video transmission was observed based on a constellation diagram, with the best result on IQ rate 2 Mhz and modulation 8 QAM. The best video transmission was also investigated using SEDIM (Sequential Distortion Minimization Method and without SEDIM. The experimental result showed that the PSNR (Peak Signal to Noise Ratio average of video transmission using SEDIM was an increase from 19,855 dB to 48,386 dB and SSIM (Structural Similarity average increase 10,49%. The experimental results and comparison of proposed method obtained a good performance. USRP board was used as RF front-end on 2,2 GHz.

  20. Digital Video Broadcast-Terrestrial (DVB-T) single frequency networks positioning in dynamic scenarios.

    Science.gov (United States)

    Huang, Jie; Lo Presti, Letizia; Garello, Roberto

    2013-08-09

    Since Global Navigation Satellite Systems (GNSS) show degraded performance in dense urban and indoor areas, a positioning sensor based on Digital Video Broadcast-Terrestrial (DVB-T) systems is presented in this paper. DVB-T signals can be considered as signals-of-opportunity for positioning, due to their good properties. One of the challenges to overcome is to distinguish the signals from different emitters. Here, we suppose that the user can first compute his position by GNSS during an initialization phase, which is used for solving all the ambiguities concerning DVB-T emitters. Starting from there, DVB-T signals can be used for aiding positioning when the user enters a GNSS-blocked area, up to a limit case, where all the GNSS satellites are not in view and only DVB-T signals are used for positioning. We tested this method by simulation, by adopting the Hata model for the emitter attenuations and the Rayleigh model for multipath. The obtained results show good performance if the receiver correctly associates the signal to the user's motion.

  1. Digital Video Broadcast-Terrestrial (DVB-T Single Frequency Networks Positioning in Dynamic Scenarios

    Directory of Open Access Journals (Sweden)

    Letizia Lo Presti

    2013-08-01

    Full Text Available Since Global Navigation Satellite Systems (GNSS show degraded performance in dense urban and indoor areas, a positioning sensor based on Digital Video Broadcast-Terrestrial (DVB-T systems is presented in this paper. DVB-T signals can be considered as signals-of-opportunity for positioning, due to their good properties. One of the challenges to overcome is to distinguish the signals from different emitters. Here, we suppose that the user can first compute his position by GNSS during an initialization phase, which is used for solving all the ambiguities concerning DVB-T emitters. Starting from there, DVB-T signals can be used for aiding positioning when the user enters a GNSS-blocked area, up to a limit case, where all the GNSS satellites are not in view and only DVB-T signals are used for positioning. We tested this method by simulation, by adopting the Hata model for the emitter attenuations and the Rayleigh model for multipath. The obtained results show good performance if the receiver correctly associates the signal to the user’s motion.

  2. Design of mine-used digital broadcasting system%矿用数字广播系统设计

    Institute of Scientific and Technical Information of China (English)

    钱建生; 李双双; 左慢慢; 赵骏逸; 李军鸿

    2013-01-01

    针对煤矿井下广播系统模拟音频广播方式存在灵活性差、语音通信范围小等问题,提出了一种新型的矿用数字广播系统设计方案,介绍了系统的总体结构、音频终端及网关程序的设计.该系统将音频终端接入工业以太网,实现了分组和定点广播,解决了井下的单播、组播问题.%For problems that underground broadcasting system with analog audio broadcasting mode has poor flexibility and small voice communication range, the paper proposed design scheme of a new kind of mine-used digital broadcasting system, introduced designs of overall structure of the system, audio terminal and gateway program. The system accesses the audio terminal in industrial Ethernet, realizes packet and designated broadcasting, which solves problems of underground unicast and multicast.

  3. Digital and multimedia forensics justified: An appraisal on professional policy and legislation

    Science.gov (United States)

    Popejoy, Amy Lynnette

    Recent progress in professional policy and legislation at the federal level in the field of forensic science constructs a transformation of new outcomes for future experts. An exploratory and descriptive qualitative methodology was used to critique and examine Digital and Multimedia Science (DMS) as a justified forensic discipline. Chapter I summarizes Recommendations 1, 2, and 10 of the National Academy of Sciences (NAS) Report 2009 regarding disparities and challenges facing the forensic science community. Chapter I also delivers the overall foundation and framework of this thesis, specifically how it relates to DMS. Chapter II expands on Recommendation 1: "The Promotion and Development of Forensic Science," and focuses chronologically on professional policy and legislative advances through 2014. Chapter III addresses Recommendation 2: "The Standardization of Terminology in Reporting and Testimony," and the issues of legal language and terminology, model laboratory reports, and expert testimony concerning DMS case law. Chapter IV analyzes Recommendation 10: "Insufficient Education and Training," identifying legal awareness for the digital and multimedia examiner to understand the role of the expert witness, the attorney, the judge and the admission of forensic science evidence in litigation in our criminal justice system. Finally, Chapter V studies three DME specific laboratories at the Texas state, county, and city level, concentrating on current practice and procedure.

  4. Implications of Internet on Broadcasting

    DEFF Research Database (Denmark)

    Henten, Anders; Tadayoni, Reza

    One of the main challenges within broadcasting research in the recent years has been to understand the evolution from traditional broadcasting to digital broadcasting. The aim of this paper is to step further and give an analysis of Internet’s influence on traditional broadcasting services...

  5. INTELLIGENCE MOBILE AND DIGITAL BROADCASTING TECHNOLOGY TO SUPPORT LEARNING FOR DISABILITIES STUDENTS

    Directory of Open Access Journals (Sweden)

    Settachai Chaisanit

    2013-01-01

    Full Text Available Usage of mobile digital broadcasting technologies in education is the most important of required technologies to provide main goals in distance education. It offers learning and data accession opportunities to learners notwithstanding time and place. In academic education, it was found that one of the critical problem is the appreciate education tool for disabilities students. Students with special education have difficulties to develop cognitive abilities and acquire new knowledge. They could also need to improve their behavior, communication and relationships with their environment. The development of customizable and adaptable applications tailored to them provides many benefits as it helps mold the learning process to different cognitive, sensorial or mobility impairments. This reviewed paper defines mobile technologies universally designed devices and technology for learning, presents examples of how designed technology hardware and software applications promote increased learning to school and university settings to enhance learning outcomes of all students, including those with disabilities. The reviewed results found that application of the instrumental enrichment of mobile technologies universally designed devices and technology can have an effect in terms of anticipated effects and thus have a positive influence on both learning skills and results in school and university students with a learning disability. The students mainly appreciated the mobile devices and technology and optimistic approach to the learner and to possibilities of modification of their own learning style. The mobile device and technology provide students with options to access the content multiple times in different settings while using a variety of technology applications. The concluded results also challenged educators to rethink the nature of the disability students’ curriculum and empower them with the flexibility to serve a diverse population of learners.

  6. 47 CFR 76.1909 - Redistribution control of unencrypted digital terrestrial broadcast content.

    Science.gov (United States)

    2010-10-01

    ... of the 8-VSB, 16-VSB, 64-QAM or 256-QAM signal, inspect either the EIT or PMT for the broadcast flag...; and (2) Use 8-VSB, 16-VSB, 64-QAM, or 256-QAM signal modulation for the retransmission. (d)...

  7. Digital multimedia books produced using iBooks Author for pre-operative surgical patient information.

    Science.gov (United States)

    Briggs, Matthew; Wilkinson, Caroline; Golash, Aprajay

    2014-10-01

    Presenting patients with medical information and ensuring informed consent can be difficult due to patients with varying levels of literacy, physical and mental disabilities and spoken languages. Patients obtaining information from external sources, such as the internet, can also be problematic as the information can be irrelevant, inaccurate or misleading. A patient satisfaction study was performed in order to assess the effectiveness of using ebooks in order to communicate pre and post surgical information to neurosurgical patients. 3 digital books were produced using iBooks Author (a free desktop publishing program designed by Apple) including ACDF (anterior cervical discectomy and fusion), lumbar laminectomy and lumbar discectomy. Each book contained written information organised into sections and chapters along with an array of multimedia elements including 3D animations, interactive diagrams, 3D models of anatomy and patient experience videos. 32 volunteer patients were then presented with the digital books via an iPad during their preoperative assessment and then asked to complete a questionnaire. The results demonstrated a demand for this type of digital presentation of medical information and also showed patients no longer felt the need to seek further information from external sources.

  8. Methods and Applications in Interactive Broadcasting

    Directory of Open Access Journals (Sweden)

    George Lekakos

    2007-09-01

    Full Text Available Interactive TV technology has been addressed in many previous works, but there is sparse research on the topic of interactive content broadcasting and how to support the production process. In this article, the interactive broadcasting process is broadly defined to include studio technology and digital TV applications at consumer set-top boxes. In particular, augmented reality studio technology employs smart-projectors as light sources and blends real scenes with interactive computer graphics that are controlled at end-user terminals. Moreover, TV producer-friendly multimedia authoring tools empower the development of novel TV formats. Finally, the support for user-contributed content raises the potential to revolutionize the hierarchical TV production process, by introducing the viewer as part of content delivery chain.

  9. Technology of Digital Radio Broadcasting%数字无线电广播技术探讨

    Institute of Scientific and Technical Information of China (English)

    薛虎

    2015-01-01

    随着我国音频广播的不断发展与创新,无线电技术被广泛应用于其中,发挥了很重要的作用.目前,我国的数字无线电广播技术尚未成熟,仍需要进一步地研究发展,以此满足人类的需要.文章主要对数字的无线电广播技术进行探讨分析,并对出现的问题提出解决措施.%With the continuous development and innovation of audio broadcasts, radio technology is widely used which has played a very important role. At present, China's digital radio technology is not yet mature, still requires further research and development, in order to meet human needs. This paper mainly for digital radio broadcasting technologies to explore analysis, and propose solutions arise.

  10. A Preliminary Investigation into the Search Behaviour of Users in a Collection of Digitized Broadcast Audio

    DEFF Research Database (Denmark)

    Lund, Haakon; Skov, Mette; Larsen, Birger;

    2014-01-01

    of the search log in a radio broadcast archive. Firstly, results in relation to the identified types of search terms show that the Programme listing category was the most frequently identified category followed by categories of Person and Subject. Secondly, users rarely apply advanced search operators...

  11. Digital contract approach for consistent and predictable multimedia information delivery in electronic commerce

    Science.gov (United States)

    Konana, Prabhudev; Gupta, Alok; Whinston, Andrew B.

    1997-01-01

    A pure 'technological' solution to network quality problems is incomplete since any benefits from new technologies are offset by the demand from exponentially growing electronic commerce ad data-intensive applications. SInce an economic paradigm is implicit in electronic commerce, we propose a 'market-system' approach to improve quality of service. Quality of service for digital products takes on a different meaning since users view quality of service differently and value information differently. We propose a framework for electronic commerce that is based on an economic paradigm and mass-customization, and works as a wide-area distributed management system. In our framework, surrogate-servers act as intermediaries between information provides and end- users, and arrange for consistent and predictable information delivery through 'digital contracts.' These contracts are negotiated and priced based on economic principles. Surrogate servers pre-fetched, through replication, information from many different servers and consolidate based on demand expectations. In order to recognize users' requirements and process requests accordingly, real-time databases are central to our framework. We also propose that multimedia information be separated into slowly changing and rapidly changing data streams to improve response time requirements. Surrogate- servers perform the tasks of integration of these data streams that is transparent to end-users.

  12. New Generation of Broadcasting Satellite Systems: New Markets and Business Developments

    Science.gov (United States)

    Perrot, Bruno; Michel, Cyril; Villaret, Stéfanie

    2002-01-01

    Since the deployment of the first Digital Broadcasting Satellite Systems, European satellite operators and service providers have been faced with the continuously increasing demand for Digital Broadcasting Services. Their success is built on the availability of the MPEG and DVB standards. Undoubtedly, conventional digital television broadcasting is today the `Killer' application. Various service providers already offer multimedia applications through DVB-S systems based upon the `Push' technology. Although these services do not currently represent the core business for broadcasting satellite operators, their percentage is increasing. `Push' technology services include Data Carousel, Webcasting, Turbo Internet, File casting and so on. Such technology can support the implementation of different emerging multimedia services scenarios from Newsgroups, Network collaborative learning, and tele-medicine, to others that may be invented in the near future. The penetration rate of multi-channel television reception is still increasing. Broadcasting satellites benefit both from the development of new, more segmented and sophisticated offers and from the development of Internet services. Satellite is likely to enter these new markets at different levels of the value chain: Even if the satellite has demonstrated its capacity to fully serve the television, combinations with other networks may be necessary to address the new markets: at the consumer premises, Internet-related services will require a return path; at the backbone level, satellite becomes a component of a full telecommunications solution. This article focuses on the European market and proposes:

  13. IMPLEMENTASI DIGITAL ASSET MANAGEMENT SYSTEM PADA WEB PORTAL KARYA SISWA JURUSAN MULTIMEDIA DI SMK NEGERI 1 MARTAPURA

    Directory of Open Access Journals (Sweden)

    Rahmat Ramadhani

    2016-04-01

    Full Text Available Student Works Web Portal Of Multimedia Department In Smk Negeri 1 Martapura is a web portal implementing Digital Asset Management System. This web portal built based by the works of the students who had only used the DVD, in which each store one of his students in a single DVD. This causes problems especially in the limited physical storage space and search work takes a long time. With the waterfall method, built a student works web portal to save the works of the students in the form of digital media. A DAM system is built on a central repository that facilitates the storage, organization, retrieval, use and reuse of digital files. The results of the construction of the web portal is known that there is a significant speed difference between the old system to the new system, the new system can be said to be faster than the old system. In addition, the new system can be seen consuming less physical space than the old system. Based on research conducted, it can be concluded that by implementing the DAM system, the search speed for work can be improved and storage of work can be saved. Keywords: Web Portal, Work, Multimedia, Digital Asset Management, Digital Media. Web Portal Karya Siswa Jurusan Multimedia SMK Negeri 1 Martapura merupakan web portal yang menerapkan Digital Asset Management System. Web portal yang dibangun dilatar belakangi oleh penyimpanan data karya-karya para siswa yang selama ini hanya menggunakan DVD, dimana setiap siswa menyimpan satu karyanya dalam satu DVD. Hal ini menyebabkan masalah terutama pada terbatasnya ruang penyimpanan secara fisik serta pencarian karya yang memerlukan waktu lama. Dengan metode waterfall, dibangunlah sebuah web portal karya siswa yang secara spesifik menyimpan karya-karya para siswa dalam bentuk media digital. Sebuah sistem DAM dibangun di atas repositori pusat yang memfasilitasi penyimpanan, organisasi, pengambilan, pemanfaatan dan penggunaan kembali file digital. Hasil dari dibangunnya web portal

  14. A Preliminary Investigation into the Search Behaviour of Users in a Collection of Digitized Broadcast Audio

    DEFF Research Database (Denmark)

    Lund, Haakon; Skov, Mette; Larsen, Birger;

    2014-01-01

    An increasing number of large digitized audio-visual collections within digital humanities have recently been made available for users. Often access to digitized audio-visual collections is hampered by little and inconsistent metadata. This paper presents the preliminary findings from a study of ...

  15. Bridging the Mire between E-Research and E-Publishing for Multimedia Digital Scholarship in the Humanities and Social Sciences: An Australian Case Study

    Directory of Open Access Journals (Sweden)

    Andrew Jakubowicz

    2007-03-01

    Full Text Available Digital media developments confront the humanities and social sciences with major challenges in exploiting multimedia rich data sets. A critical need is demonstrated to bridge the divide between the building of multimedia digital repositories, and the publishing of research outcomes that exploit the interactive potential of digital media. Software that melds the steps in digital research and publishing, now disparate environments, into a single sequence of integrated procedures can provide a critical innovation for the transformation of digital research and publishing from a quasi-craft-like and demanding set of skills, into a transparent and user-directed flow process. Humanities and social science (HSS researchers who use multimedia data could be working more collaboratively, creatively and with far more international impact. The HSS have not yet exploited the interactive and collaborative potential offered by interactive computer technologies, and the expansion of digital repositories. Digital publishing has opened opportunities to incorporate both interactivity and multimedia into scholarly publishing, permitting new modes of visualization and creating ever mutable texts. Open Source software, can offer an internationally significant break-through in research definition, data collection and management, and interactive publishing, leading to a major paradigm shift in eHumanities and eSocialScience. The article proposes a framework for bridging the gap, overcoming the silo problem and building an interactive multimedia research environment (m.i.r.e..

  16. Medium and Small TV Station the Digital Hard Disk Broadcasting System%中小电视台数字硬盘播出系统

    Institute of Scientific and Technical Information of China (English)

    叶洪涛

    2012-01-01

    In this paper ,the designed demand of digital hard disk broadcasting system is offered, the structure and its application in Taixing TV station of GeFei four channels digital hard disk broadcasting system are dis- cussed. The key is video server and systematic software to digital hard disk broadcasting system, Science and Technology Innovation Awards is conferred to GeFei system by State Administration of Radio ,Film ,and Televi- sion, and it has passed Metrology and Test Center of Radio and TV State Administration of Radio, Film, and Television detection,appraisal ,check and accept. The system is mature technology ,the safety and reliable ,op- erate the convenience, the technical stability is higher, it is possessed of excellent broadcasting systematic soft- ware. Finally, issues should pay attention and breakdown that appear in daily use and safeguard make explain.%提出数字硬盘播出系统的设计要求,论述格非四通道数字化硬盘播出系统的构成及其在泰兴电视台的应用,并对日常使用和维护中应注意的事项及出现的故障作了说明。

  17. 数字音频水印及其在广播系统中的应用%Digital audio watermarking technology and application on broadcast system

    Institute of Scientific and Technical Information of China (English)

    曹军梅

    2011-01-01

    Aiming at the insecurity factor such as unlawful interference damage existing in radio and television network at present,the safety management of broadcasting system is enhanced and perfected.Through stating the principle of digital watermarking and analyzing the watermark algorithm,making the digital audio watermarking technology be applied to broadcasting system safety management,a solution based on digital audio watermarking technology is proposed.Simulation experiment is proceeded using Matlab to security detection of broadcast signal,copyright the authentication of program and broadcast monitoring.According to the experimental results indicated that the project is feasible.So digital audio watermarking can apply in the safety management of broadcast system commendably.%针对目前广播电视网络存在的非法干扰破坏等一些不安全因素,以进一步加强和完善广播系统的安全管理为目的。通过对数字水印基本原理的阐述以及水印算法的详细分析,将数字音频水印技术应用于广播系统安全管理中,提出了基于数字音频水印技术的解决方案。并利用Matlab工具对广播信号的安全检测、节目的版权认证和播出监视进行了相关的仿真实验,根据实验结果得出该方案是可行的。因此数字音频水印能够很好地应用于广播系统的安全管理中。

  18. Technical Aspects of DAB and IBOC Terrestrial Digital Radio Broadcasting Standards

    Directory of Open Access Journals (Sweden)

    Moumtadi F.

    2011-07-01

    Full Text Available The development of digital radiobroadcast standards and the advantages related to it (optimization of video, audio and applications transmission and services makes indispensable the study of its technical characteristics, due to the definition, over common parameters, of the advantages of each standard by itself and in comparison to others. In this paper the basic technical characteristics of two terrestrial digital radiobroadcasting standards are shown: on one hand, the so called “In-Band-On-Channel” (IBOC and, on the other, the “Digital Audio Broadcast” (DAB standard. The analysis compares the data management procedures of the standards and its relation with the open systems interconnection model – OSI, that opens the possibility to make a real comparison between them. At the end it is concluded that, technologically, the possibility for radio stations to use their actual infrastructure without capital modifications and / or enhancements, makes IBOC a clear option of implementation for digital radiobroadcasting in countries like Mexico.

  19. Multimedia technologies in education.

    Science.gov (United States)

    Liaskos, Joseph; Diomidus, Marianna

    2002-01-01

    In general multimedia is the combination of visual and audio representations. These representations could include elements of texts, graphic arts, sound, animation, and video. However, multimedia is restricted in such systems where information is digitalized and is processed by a computer. Interactive multimedia and hypermedia consist of multimedia applications that the user has more active role. Education is perhaps the most useful destination for multimedia and the place where multimedia has the most effective applications, as it enriches the learning process. Multimedia both in nursing education and in medical informatics education has several applications as well. A multimedia project can be developed even as a "stand alone" application (on CD-ROM), or on World Wide Web pages on Internet. However several technical constraints exist for developing multimedia applications on Internet. For developing multimedia projects we need hardware and software, talent and skill. The software requirements for multimedia development consist of one or more authoring systems and various editing applications for text, images, sounds and video. In this chapter different software tools for creating multimedia applications are presented. In the last part of this chapter, two examples of multimedia educational training programs are discussed. Both are "stand alone" applications (CD-ROMs). The first, examines several aspects of the electronic patient record by using videos, audio descriptions, lectures and glossary, while the second one presents several topics regarding epidemiology and epidemiological research by using graphics, sound and animation.

  20. Synchronization of MPEG-7 metadata with a broadband MPEG-2 digiTV stream by utilizing a digital broadcast item approach

    Science.gov (United States)

    Lugmayr, Artur R.; Kalli, Seppo; Creutzburg, Reiner

    2003-02-01

    Digital, Interaction Television will be deployed in the next few years, where the key-standard for Europe is DVB/MHP4. Initial experiences are already reported, but for advanced use scenarios, and application areas basic research issues, such as synchronization of MPEG-7 metadata, retrieved either from the broadcast stream, or the feedback channel are still to be done. In this research work we consider, that metadata will be available from multiple sources, especially commercial emerging MPEG-7 extractors, and streamed to a digiTV client over the broadcast- or feedback network. MPEG-71 provides asynchronous or synchronous delivery at transport layer, and DVB/MHP standards provide synchronization via a trigger mechanism. As an example we show a simple hyperlinked television show, where we segmented each frame into elements of interest, to which a hyperlink can be added. The key aspects of this paper are as follows: Description and introduction of a Digital Broadcast Item (DBI) for structuring hyperlinked TV to one entity, that is exchanged between several parties in the broadcast chain based on MPEG-21 standards; MPEG-7 metdata extraction models and image segmentation authoring tools for obtaining information about the hyperlinks within a video segment, and within a still frame; Metadata transmission and synchronization models; MPEG-7 Systems compliant software architecture at client side;

  1. A Model for Video Quality Assessment Considering Packet Loss for Broadcast Digital Television Coded in H.264

    Directory of Open Access Journals (Sweden)

    Jose Joskowicz

    2014-01-01

    Full Text Available This paper presents a model to predict video quality perceived by the broadcast digital television (DTV viewer. We present how noise on DTV can introduce individual transport stream (TS packet losses at the receiver. The type of these errors is different than the produced on IP networks. Different scenarios of TS packet loss are analyzed, including uniform and burst distributions. The results show that there is a high variability on the perceived quality for a given percentage of packet loss and type of error. This implies that there is practically no correlation between the type of error or the percentage of packets loss and the perceived degradation. A new metric is introduced, the weighted percentage of slice loss, which takes into account the affected slice type in each lost TS packet. We show that this metric is correlated with the video quality degradation. A novel parametric model for video quality estimation is proposed, designed, and verified based on the results of subjective tests in SD and HD. The results were compared to a standard model used in IP transmission scenarios. The proposed model improves Pearson Correlation and root mean square error between the subjective and the predicted MOS.

  2. Effects of HPA-nonlinearity on a 4-DPSK/OFDM-signal for a digital sound broadcasting signal

    Science.gov (United States)

    Rapp, Christoph

    1991-10-01

    Orthogonal Frequency Division Multiplexing (OFDM) in conjunction with a 4 Differential Phase Shift Keying (DPSK) modulation format has been proposed for the future Digital Audio Broadcasting system (DAB), that should provide compact disk sound quality in portable, vehicular and fixed receivers. With properly chosen parameters, this system should be appropriate for both terrestrial and satellite transmission. The influence of the nonlinear distorsions introduced by the High Power Amplifier (HPA) of the transmitter is examined. In particular, the degradations in power efficiency due to intermodulation effects and backoff operating, as well as spectral degradations are investigated. It is shown for three different kinds of limiting amplifier models, that even with an output backoff in the region of 5 to 6 dB, the degradation of, for example a 512 carrier 4 DPSK/OFDM system relative to the linear case is below 1.7 dB (Pb = 0.0001), while the regenerated sidelobes of the transmitted spectrum are kept below -20 dB.

  3. A multimedia analytics framework for browsing image collections in digital forensics

    NARCIS (Netherlands)

    M. Worring; A. Engl; C. Smeria

    2012-01-01

    Searching through large collections of images to find patterns of use or to find sets of relevant items is difficult, especially when the information to consider is not only the content of the images itself, but also the associated metadata. Multimedia analytics is a new approach to such problems. W

  4. Bluetooth broadcasting

    OpenAIRE

    Ho, Johan

    2006-01-01

    Background: The wireless technology Bluetooth has rapidly become more commonly supported by electronic devices like mobile phones and PDAs. Several companies are currently developing Bluetooth broadcasting systems to use for marketing. This report is a result of researching the use of Bluetooth broadcasting for delivering information for more general purposes, how well Bluetooth actually works for broadcasting, and also on the topic of user privacy. Results: Broadcasting with Bluetooth did w...

  5. Multimedia encryption and watermarking encryption and watermarking

    CERN Document Server

    Furht, Borko; Socek, Daniel

    2006-01-01

    ""Multimedia Encryption and Watermarking"" presents a comprehensive survey of contemporary multimedia encryption and watermarking techniques, which enable a secure exchange of multimedia intellectual property. Part I, Digital Rights Management (DRM) for Multimedia, introduces DRM concepts and models for multimedia content protection, and presents the key players. Part II, Multimedia Cryptography, provides an overview of modern cryptography, with the focus on modern image, video, speech, and audio encryption techniques. This book also provides an advanced concept of visual and audio sharing tec

  6. Multimedia programming with pure data

    CERN Document Server

    Chung, Bryan

    2013-01-01

    A quick and comprehensive tutorial book for media designers to jump-start interactive multimedia production with computer graphics, digital audio, digital video, and interactivity, using the Pure Data graphical programming environment.An introductory book on multimedia programming for media artists/designers who like to work on interactivity in their projects, digital art/design students who like to learn the first multimedia programming technique, and audio-visual performers who like to customize their performance sets

  7. The Practice of Digital Hard Disk Broadcast System%电视台数字硬盘播出系统实践

    Institute of Scientific and Technical Information of China (English)

    杨跃武

    2014-01-01

    介绍数字硬盘播出系统的组成与维护技术,针对播出工作中存在的不足,对系统采取改进措施,提高了播出质量,最后从制度管理和技术培训两个方面阐述如何做好硬盘播出工作。%This article first introduces the composition of digital hard disk system , and over the years for system maintenance are summarized , according to the own experience in practice , the system adopted improvement measures, improve the quality of the broadcast , the last also from two aspects that paper expounds the system of management and the technical training to explain how to do a good job of hard disk broadcast .

  8. 无线移动数字图书馆系统中多媒体检索的同步模式%A synchronization scheme for multimedia retrieval in digital libraries over cellular radio networks

    Institute of Scientific and Technical Information of China (English)

    党德鹏; 周立柱

    2006-01-01

    Recent advances in wireless mobile computing, digital library, and distributed multimedia technologies are stimulating the development of mobile multimedia digital library systems (M2DLS) that allow mobile clients to access multimedia material anywhere and anytime over a cellular radio network. This paper addresses the problem of providing synchronized multimedia retrieval in these systems. An efficient inter-media synchronization scheme called wireless prioritized feedback (WPF) for mobile multimedia on-demand retrieval in digital library systems over CDMA cellular radio networks in the absence of synchronized clocks is presented. In the WPF scheme, base stations use preferential lightweight message called feedback units transmitted by mobile mediaphones to detect and correct asynchronies. The algorithm is described with pseudo code, and experiments are described to demonstrate the efficiency of WPF.

  9. 14 CFR 1213.108 - Multimedia materials.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Multimedia materials. 1213.108 Section 1213... AND INFORMATION MEDIA § 1213.108 Multimedia materials. (a) NASA's multimedia material, from all... original or duplicate files of news-oriented imagery and other digital multimedia material generated...

  10. Multimedia security watermarking, steganography, and forensics

    CERN Document Server

    Shih, Frank Y

    2012-01-01

    Multimedia Security: Watermarking, Steganography, and Forensics outlines essential principles, technical information, and expert insights on multimedia security technology used to prove that content is authentic and has not been altered. Illustrating the need for improved content security as the Internet and digital multimedia applications rapidly evolve, this book presents a wealth of everyday protection application examples in fields including multimedia mining and classification, digital watermarking, steganography, and digital forensics. Giving readers an in-depth overview of different asp

  11. Multimedia communications and networking

    CERN Document Server

    da Silva, Mario Marques

    2012-01-01

    The result of decades of research and international project experience, Multimedia Communications and Networking provides authoritative insight into recent developments in multimedia, digital communications, and networking services and technologies. Supplying you with the required foundation in these areas, it illustrates the means that will allow for improved digital communications and networks. The book starts with a review of the fundamental concepts, requirements, and constraints in networks and telecommunications. It describes channel disturbances that can hinder system performance--inclu

  12. 数字音频广播的发展现状及难点%Developmental Status and Dififculty of Digital Audio Broadcasting

    Institute of Scientific and Technical Information of China (English)

    何廷润

    2015-01-01

    On the basis of features and developmental status of digital audio broadcasting (DAB), spectrum planning of DAB in different countries at present was introduced. Especially, the marketization dififculty of DAB development around the globe was expounded. In addition, the policy restriction of different countries was described.%在描述数字音频广播(DAB)的特征与发展现状的基础上,介绍当前各国DAB的频谱规划,重点阐述了全球DAB发展面临的市场化难题,以及不同国家的政策制约。

  13. Design of Underground Digital Security Broadcasting System%井下数字安全广播系统的设计

    Institute of Scientific and Technical Information of China (English)

    崔连成; 刘凯; 马丽娜; 何君燕

    2011-01-01

    For shortcomings of mine-used broadcasting systems of traditional constant-pressure broadcasting, local amplified phone and personal access system, the paper proposed a design scheme of underground digital security broadcasting system and introduced whole structure and design methods of hardware and software of the system. The system can realize remote audio transmission at lower speed, which adopts audio encoding method of Ogg Vorbis and CAN bus to transmit data. The application results showed the system has better ability of audio restoration.%针对传统的定压广播、局部扩音电话及小灵通等矿用广播系统的缺点,提出了一种井下数字安全广播系统的设计方案,介绍了该系统的整体结构及软、硬件设计方法.该系统采用Ogg Vorbis音频编码方式,以CAN总线为数据传输方式,可实现远程低速率音频传输.应用结果表明,该系统具有较好的音频还原能力.

  14. Broadcast sound technology

    CERN Document Server

    Talbot-Smith, Michael

    1990-01-01

    Broadcast Sound Technology provides an explanation of the underlying principles of modern audio technology. Organized into 21 chapters, the book first describes the basic sound; behavior of sound waves; aspects of hearing, harming, and charming the ear; room acoustics; reverberation; microphones; phantom power; loudspeakers; basic stereo; and monitoring of audio signal. Subsequent chapters explore the processing of audio signal, sockets, sound desks, and digital audio. Analogue and digital tape recording and reproduction, as well as noise reduction, are also explained.

  15. Routing of multimedia connections in hybrid networks

    Science.gov (United States)

    Koegel, John F.; Syta, Andrzej

    1993-02-01

    The prevailing vision for next generation multimedia communication systems is a digital one. However, we anticipate a transitional period in which hybrid networks involving both analog and digital technology will coexist. These analog facilities will include crossbar audio-video switches, CATV distribution systems, and dedicated lines. For some scale of use, these facilities may offer economies for connectivity to conventional analog video equipment. We are interested in connection routing that will be needed in such hybrid networks for services including video conferencing and broadcast results. The routing problem in such topologies resembles but is not identical to that found in telephone systems because of the presence of broadcast connections. We discuss representative topologies, review related work, and describe algorithms and simulation results. In addition we describe a hybrid system that we have implemented in our research lab which involves several A/V switches, CATV channels, digital video on a LAN, and a point-to-point link to an offsite conference area.

  16. Broadcasting house

    DEFF Research Database (Denmark)

    Sattrup, Peter Andreas

    2008-01-01

    Regarding the transformation of the Danish Broadcasting Hq. (1934-1945) in Frederiksberg by Vilhelm Lauritzen into the Royal Danish Academy of Music. Analysis, principles, flexibility and change.......Regarding the transformation of the Danish Broadcasting Hq. (1934-1945) in Frederiksberg by Vilhelm Lauritzen into the Royal Danish Academy of Music. Analysis, principles, flexibility and change....

  17. Digital Video Projects of, by, and for New Teachers: The Multiple Educational Functions of Creating Multimedia

    Science.gov (United States)

    Halter, Christopher; Levin, James

    2014-01-01

    A three year study of digital video creation in higher education investigated the impact that creating short digital videos by university students in their final class of a teacher education program had on those students. Each student created a short video reflecting on the process of how he/she became a teacher. An analysis of the videos…

  18. Overview of multimedia content protection in consumer electronics devices

    Science.gov (United States)

    Eskicioglu, Ahmet M.; Delp, Edward J., III

    2000-05-01

    A digital home network is a cluster of digital audio/visual (A/V) devices including set-top boxes, TVs, VCRs, DVD players, and general-purpose computing devices such as personal computers. The network may receive copyrighted digital multimedia content from a number of sources. This content may be broadcast via satellite or terrestrial systems, transmitted by cable operators, or made available as prepackaged media (e.g., a digital tape or a digital video disc). Before releasing their content for distribution, the content owners may require protection by specifying access conditions. Once the content is delivered to the consumer, it moves across home the network until it reaches its destination where it is stored or displayed. A copy protection system is needed to prevent unauthorized access to bit streams in transmission from one A/V device to another or while it is in storage on magnetic or optical media. Recently, two fundamental groups of technologies, encryption and watermarking, have been identified for protecting copyrighted digital multimedia content. This paper is an overview of the work done for protecting content owners' investment in intellectual property.

  19. Application Design Of Interactive Multimedia Development Based Motion Graphic On Making Fashion Design Learning In Digital Format

    National Research Council Canada - National Science Library

    Winwin Wiana

    2015-01-01

    This study is a research and development aimed at developing multimedia interactive learning based animation as an effort to improve student learning motivation in learning Fashion Design Technology...

  20. Life Out There: An Astrobiological Multimedia Experience for the Digital Planetarium

    Science.gov (United States)

    Yu, K. C.; Grinspoon, D.

    2013-04-01

    Planetariums have a long history of experimentation with audio and visuals to create new multimedia experiences. We report on a series of innovative experiences in the Gates Planetarium at the Denver Museum of Nature & Science in 2009-2011 combining live performances of music and navigation through scientific visualizations. The Life Out There productions featured a story showcasing astrobiology concepts at scales ranging from galactic to molecular, and told using VJ-ing of immersive visualizations and musical performances from the House Band to the Universe. Funded by the NASA Astrobiology Institute's JPL-Titan Team, these hour-long shows were broken into four separate themed musical movements, with an improvisatory mix of music, dome visuals, and spoken science narrative which resulted in no two performances being exactly alike. Post-performance dissemination is continuing via a recorded version of the performance available as a DVD and online streaming video. Written evaluations from visitors who were present at the live shows reveal high satisfaction, while one of the Life Out There concerts was used to inaugurate a new evening program to draw in a younger audience demographic to DMNS.

  1. Multimedia Information Networks in Social Media

    Science.gov (United States)

    Cao, Liangliang; Qi, Guojun; Tsai, Shen-Fu; Tsai, Min-Hsuan; Pozo, Andrey Del; Huang, Thomas S.; Zhang, Xuemei; Lim, Suk Hwan

    The popularity of personal digital cameras and online photo/video sharing community has lead to an explosion of multimedia information. Unlike traditional multimedia data, many new multimedia datasets are organized in a structural way, incorporating rich information such as semantic ontology, social interaction, community media, geographical maps, in addition to the multimedia contents by themselves. Studies of such structured multimedia data have resulted in a new research area, which is referred to as Multimedia Information Networks. Multimedia information networks are closely related to social networks, but especially focus on understanding the topics and semantics of the multimedia files in the context of network structure. This chapter reviews different categories of recent systems related to multimedia information networks, summarizes the popular inference methods used in recent works, and discusses the applications related to multimedia information networks. We also discuss a wide range of topics including public datasets, related industrial systems, and potential future research directions in this field.

  2. Making sense with multimedia. A text theoretical study of a digital format integrating writing and video

    Directory of Open Access Journals (Sweden)

    Martin Engebretsen

    2006-03-01

    Full Text Available Digital text formats that allow a close interaction between writing and video represent new possibilities and challenges for the communication of educational content. What are the premises for functional and appropriate communication through web-based, multimedial text formats?This article explores the digital writing-video format from a structural, theoretical perspective. To begin with, the two media’s respective characteristics are discussed and compared as carriers of complex signs. Thereafter, the focus is upon how writing and video elements can be accommodated to web media. Finally, the article discusses the conditions for optimal co-ordination and interaction between the two media types within the framework of an integrated design. A design example is presented.

  3. The digital sport radio.

    Directory of Open Access Journals (Sweden)

    Hilario José ROMERO BEJARANO

    2014-07-01

    Full Text Available Radio has been immersed in recent years in a phase of technological integration and business of multimedia, as well as diversification of systems and channels for broadcasting. In addition, Internet has been consolidated as the platform of digital radio that more has evolved as a result of its continued expansion. However, the merger radio-Internet must be understood as a new form of communication, and not solely as a new complementary medium. In this context, it is of great interest to analyze that transformations in the way of reception, contents, languages, programs and schedules, has brought with it for the radio that integration. To this end is taken as main reference the sports areas, a key aspect and broadly representative of the current broadcasting landscape.

  4. Multimedia authentication for copyright protection

    Science.gov (United States)

    Yin, Mingsheng

    2017-06-01

    Multimedia contents are easy to be copied and modified, so it is important to use authentication technology to ensure reliability and copyright security. Multimedia authentication technology is usually divided into digital signature and digital watermarking. In this paper, we introduce some basic image and video authentication technology, such as PCA algorithm and image signature method based on DCT coefficient, LSB -based digital image watermark, SVD-based digital image watermark, and video watermark. Through these digital content security technology, digital contents can be ensured security

  5. Transactional interactive multimedia banner

    Science.gov (United States)

    Shae, Zon-Yin; Wang, Xiping; von Kaenel, Juerg

    2000-05-01

    Advertising in TV broadcasting has shown that multimedia is a very effective means to present merchandise and attract shoppers. This has been applied to the Web by including animated multimedia banner ads on web pages. However, the issues of coupling interactive browsing, shopping, and secure transactions e.g. from inside a multimedia banner, have only recently started to being explored. Currently there is an explosively growing amount of back-end services available (e.g., business to business commerce (B2B), business to consumer (B2C) commerce, and infomercial services) in the Internet. These services are mostly accessible through static HTML web pages at a few specific web portals. In this paper, we will investigate the feasibility of using interactive multimedia banners as pervasive access point for the B2C, B2B, and infomercial services. We present a system architecture that involves a layer of middleware agents functioning as the bridge between the interactive multimedia banners and back-end services.

  6. PEMNetwork: Barriers and Enablers to Collaboration and Multimedia Education in the Digital Age.

    Science.gov (United States)

    Lumba-Brown, Angela; Tat, Sonny; Auerbach, Marc A; Kessler, David O; Alletag, Michelle; Grover, Purva; Schnadower, David; Macias, Charles G; Chang, Todd P

    2016-08-01

    In January 2005, PEMFellows.com was created to unify fellows in pediatric emergency medicine. Since then, the website has expanded, contracted, and focused to adapt to the interests of the pediatric emergency medicine practitioner during the internet boom. This review details the innovation of the PEMNetwork, from the inception of the initial website and its evolution into a needs-based, user-directed educational hub. Barriers and enablers to success are detailed with unique examples from descriptive analysis and metrics of PEMNetwork web traffic as well as examples from other online medical communities and digital education websites.

  7. REAL-TIME LICENSING MANAGEMENT OF SECURE MULTIMEDIA CONTENT DELIVERY

    Institute of Scientific and Technical Information of China (English)

    马兆丰; 冯博琴

    2004-01-01

    Media Commerce is now becoming a new trend which results from faster development of network bandwidth and high availability of multimedia technologies, how to protect media content from being used in a right-violated way is one of most important issues to take into account. In this paper, a novel and efficient authorization and authentication Digital Rights Management (DRM) schema is proposed firstly for secure multimedia delivery, then based on the schema, a real-time digital signature algorithm built on Elliptic Curve Cryptography (ECC) is adopted for fast authentication and verification of licensing management, thus secure multimedia delivery via TCP/RTP can efficiently work with real-time transaction response and high Quality of Service (QoS) . Performance evaluations manifest the proposed schema is secure, available for real-time media stream authentication and authorization without much effected of QoS. The proposed schema is not only available for Client/Server media service but can be easily extended to P2P and broadcasting network for trusted rights management.

  8. 47 CFR 74.793 - Digital low power TV and TV translator station protection of broadcast stations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital low power TV and TV translator station... DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.793 Digital low power TV and TV... TV or TV translator station or change the facilities of an existing station will not be accepted...

  9. 论数字网络广播IP流和TS流的异同%On the Similarities and Differences of IP Stream and TS Stream in Digital Network Broadcasting

    Institute of Scientific and Technical Information of China (English)

    吴志祥

    2016-01-01

    Mainly for digital IP flow network radio and digital TS stream function are introduced, IP network broadcasting inevitable five major disadvantages and TS flow broadcasting unique advantage at 6.In the final analysis the spirit sound intelligent emergency broadcasting system basic structure, forecasted its market vi-sion, be used for reference in the study of digital network broadcasting.%主要对数字IP流网络广播和数字TS流广播的功能进行了介绍,提出了IP网络广播不可避免的5大弊端以及TS流广播独有的6点优势。最后分析了灵声智能应急广播系统的基本结构,展望了其市场远景,对数字网络广播的研究起到借鉴作用。

  10. Public Broadcasting.

    Science.gov (United States)

    Shooshan, Harry M.; Arnheim, Louise

    This paper, the second in a series exploring future options for public policy in the communications and information arenas, examines some of the issues underlying public broadcasting, primarily public television. It advances two reasons why quality local public television programming is scarce: funds for the original production of programming have…

  11. Application Design Of Interactive Multimedia Development Based Motion Graphic On Making Fashion Design Learning In Digital Format

    Directory of Open Access Journals (Sweden)

    Winwin Wiana

    2015-08-01

    Full Text Available This study is a research and development aimed at developing multimedia interactive learning based animation as an effort to improve student learning motivation in learning Fashion Design Technology apart from this study also aims to design a learning program courses Fashion Design Technology with a focus on optimizing the use of interactive media in learning process. From this study showed 1 A preliminary study found that the problems faced by students when studying Fashion Design Technology is the student is not optimal when learning designing clothes based computer technology both in terms of learning content learning mechanisms that still uses a linear media and limitations of highly structured learning time. 2 Animation multimedia has the following characteristics a media of learning is convergent interactive self-contained in the sense of giving convenience to users without the guidance of others as multimedia applications can present the material to see more interesting and informative. 3 Design of multimedia learning software developed include the creation of flowcharts storyboards and drafting manuscript of interactive multimedia based animation. 4 Based on the results of validation by multimedia experts obtained an average percentage of 85.55 viability of the material experts obtained an average percentage of 90.84 viability and by students as users gained an average percentage of 96.38 eligibility so it can be said that the standard of the feasibility of interactive multimedia based animation developed is included in the category of Very High or Very Good. Furthermore experts agree that the development of interactive multimedia based animation on learning Fashion Design Technology can be used with some aspects that need to be improved to obtain higher levels of feasibility more optimal.

  12. Summary on Digital Audio Broadcasting and Digital Multimedia Broadcasting%我国数字音频广播和数字多媒体广播的发展综述

    Institute of Scientific and Technical Information of China (English)

    张治通

    2007-01-01

    本文介绍了国外数字音频广播(DAB)发展的历史,阐述了我国DAB三个发展阶段,提出随着技术不断的发展,DAB必将注入新的内容,获得新的发展,并将逐渐发展为集声音、视频和数据于一体的数字多媒体广播(DMB),成为新一代广播媒体形式.

  13. System for delivery of broadcast digital video as an overlay to baseband switched services on a fiber-to-the-home access network

    Science.gov (United States)

    Chand, Naresh; Magill, Peter D.; Swaminathan, Venkat S.; Yadvish, R. D.

    1999-04-01

    For low cost fiber-to-the-home (FTTH) passive optical networks (PON), we have studied the delivery of broadcast digital video as an overlay to baseband switched digital services on the same fiber using a single transmitter and a single receiver. We have multiplexed the baseband data at 155.52 Mbps with digital video QPSK channels in the 270 - 1450 MHz range with minimal degradation. We used an additional 860 MHz carrier modulated with 8 Mbps QPSK as a test-signal. An optical to electrical (O/E) receiver using an APD satisfies the power budget needs of ITU-T document G983.x for both class B and C operations (i.e., receiver sensitivity less than -33 dBm for a 10-10 bit error rate) without any FEC for both data and video. The PIN diode O/E receiver nearly satisfies the need for class B operation (-30 dBm receiver sensitivity) of G983 with FEC in QPSK FDM video. For a 155.52 Mbps baseband data transmission and for a given bit error rate, there is approximately 6 dBo1 optical power penalty due to video overlay. Of this, 1 dBo penalty is due to biasing the laser with an extinction ratio reduced from 10 dBo to approximately 6 dBo, and approximately 5 dBo penalty is due to receiver bandwidth increasing from approximately 100 MHz to approximately 1 GHz. The penalty due to receiver is after optimizing the filter for baseband data, and is caused by the reduced value of feedback resistor of the first stage transimpedance amplifier. The optical power penalty for video transmission is about 2 dBo due to reduced optical modulation index.

  14. ISMuS: interactive, scalable, multimedia streaming platform

    Science.gov (United States)

    Cha, Jihun; Kim, Hyun-Cheol; Jeong, Seyoon; Kim, Kyuheon; Patrikakis, Charalampos; van der Schaar, Mihaela

    2005-08-01

    Technical evolutions in the field of information technology have changed many aspects of the industries and the life of human beings. Internet and broadcasting technologies act as core ingredients for this revolution. Various new services that were never possible are now available to general public by utilizing these technologies. Multimedia service via IP networks becomes one of easily accessible service in these days. Technical advances in Internet services, the provision of constantly increasing network bandwidth capacity, and the evolution of multimedia technologies have made the demands for multimedia streaming services increased explosively. With this increasing demand Internet becomes deluged with multimedia traffics. Although multimedia streaming services became indispensable, the quality of a multimedia service over Internet can not be technically guaranteed. Recently users demand multimedia service whose quality is competitive to the traditional TV broadcasting service with additional functionalities. Such additional functionalities include interactivity, scalability, and adaptability. A multimedia that comprises these ancillary functionalities is often called richmedia. In order to satisfy aforementioned requirements, Interactive Scalable Multimedia Streaming (ISMuS) platform is designed and developed. In this paper, the architecture, implementation, and additional functionalities of ISMuS platform are presented. The presented platform is capable of providing user interactions based on MPEG-4 Systems technology [1] and supporting an efficient multimedia distribution through an overlay network technology. Loaded with feature-rich technologies, the platform can serve both on-demand and broadcast-like richmedia services.

  15. 47 CFR 15.117 - TV broadcast receivers.

    Science.gov (United States)

    2010-10-01

    ... sound commensurate with their video and audio capabilities when receiving digital television signals. (i... receive over-the-air broadcasts with an antenna because of the Nation's transition to digital broadcasting... that provide for reception of digital television signals. The reference in this section to TV...

  16. 自制多媒体数字录音编辑系统%Independently Developed Digital Multimedia Recording and Editing System

    Institute of Scientific and Technical Information of China (English)

    储荣安; 李铭

    2001-01-01

    This article introduced a digital system of recording and editing audio materials for language teachingusing multimedia computer technology. By converting simulated signals into digital signals, this system ensures high fidelity for the audios materials and thus creates a firm basis for improving the quality of foreign language experiment teching.%介绍了采用多媒体计算机录制和编辑语言教学磁带的数字系统,该系统通过模拟信号与数字信号间的转换,可使制作的录音带声音清澈、失真度小,为提高外语语音实验教学质量创造了良好的条件。

  17. Multimedia Information Extraction

    CERN Document Server

    Maybury, Mark T

    2012-01-01

    The advent of increasingly large consumer collections of audio (e.g., iTunes), imagery (e.g., Flickr), and video (e.g., YouTube) is driving a need not only for multimedia retrieval but also information extraction from and across media. Furthermore, industrial and government collections fuel requirements for stock media access, media preservation, broadcast news retrieval, identity management, and video surveillance.  While significant advances have been made in language processing for information extraction from unstructured multilingual text and extraction of objects from imagery and vid

  18. Multimedia Retrieval

    NARCIS (Netherlands)

    Blanken, H.M.; Vries, de A.P.; Blok, H.E.; Feng, L.

    2007-01-01

    Retrieval of multimedia data is different from retrieval of structured data. A key problem in multimedia databases is search, and the proposed solutions to the problem of multimedia information retrieval span a rather wide spectrum of topics outside the traditional database area, ranging from inform

  19. Does Digital Video Advertising Increase Population-Level Reach of Multimedia Campaigns? Evidence From the 2013 Tips From Former Smokers Campaign

    Science.gov (United States)

    Shafer, Paul R; Rodes, Robert; Kim, Annice; Hansen, Heather; Patel, Deesha; Coln, Caryn; Beistle, Diane

    2016-01-01

    Background Federal and state public health agencies in the United States are increasingly using digital advertising and social media to promote messages from broader multimedia campaigns. However, little evidence exists on population-level campaign awareness and relative cost efficiencies of digital advertising in the context of a comprehensive public health education campaign. Objective Our objective was to compare the impact of increased doses of digital video and television advertising from the 2013 Tips From Former Smokers (Tips) campaign on overall campaign awareness at the population level. We also compared the relative cost efficiencies across these media platforms. Methods We used data from a large national online survey of approximately 15,000 US smokers conducted in 2013 immediately after the conclusion of the 2013 Tips campaign. These data were used to compare the effects of variation in media dose of digital video and television advertising on population-level awareness of the Tips campaign. We implemented higher doses of digital video among selected media markets and randomly selected other markets to receive similar higher doses of television ads. Multivariate logistic regressions estimated the odds of overall campaign awareness via digital or television format as a function of higher-dose media in each market area. All statistical tests used the .05 threshold for statistical significance and the .10 level for marginal nonsignificance. We used adjusted advertising costs for the additional doses of digital and television advertising to compare the cost efficiencies of digital and television advertising on the basis of costs per percentage point of population awareness generated. Results Higher-dose digital video advertising was associated with 94% increased odds of awareness of any ad online relative to standard-dose markets (Padvertising was associated with a marginally nonsignificant increase (46%) in overall campaign awareness regardless of media

  20. Does Digital Video Advertising Increase Population-Level Reach of Multimedia Campaigns? Evidence From the 2013 Tips From Former Smokers Campaign.

    Science.gov (United States)

    Davis, Kevin C; Shafer, Paul R; Rodes, Robert; Kim, Annice; Hansen, Heather; Patel, Deesha; Coln, Caryn; Beistle, Diane

    2016-09-14

    Federal and state public health agencies in the United States are increasingly using digital advertising and social media to promote messages from broader multimedia campaigns. However, little evidence exists on population-level campaign awareness and relative cost efficiencies of digital advertising in the context of a comprehensive public health education campaign. Our objective was to compare the impact of increased doses of digital video and television advertising from the 2013 Tips From Former Smokers (Tips) campaign on overall campaign awareness at the population level. We also compared the relative cost efficiencies across these media platforms. We used data from a large national online survey of approximately 15,000 US smokers conducted in 2013 immediately after the conclusion of the 2013 Tips campaign. These data were used to compare the effects of variation in media dose of digital video and television advertising on population-level awareness of the Tips campaign. We implemented higher doses of digital video among selected media markets and randomly selected other markets to receive similar higher doses of television ads. Multivariate logistic regressions estimated the odds of overall campaign awareness via digital or television format as a function of higher-dose media in each market area. All statistical tests used the .05 threshold for statistical significance and the .10 level for marginal nonsignificance. We used adjusted advertising costs for the additional doses of digital and television advertising to compare the cost efficiencies of digital and television advertising on the basis of costs per percentage point of population awareness generated. Higher-dose digital video advertising was associated with 94% increased odds of awareness of any ad online relative to standard-dose markets (Pdigital advertising was associated with a marginally nonsignificant increase (46%) in overall campaign awareness regardless of media format (P=.09). Higher

  1. 浅谈数字导播系统在交通频率的应用%Application of Digital Broadcasting System in Traffic Frequency

    Institute of Scientific and Technical Information of China (English)

    袁正义; 王文举; 胡磊

    2014-01-01

    In order to solve in the live broadcast of telephone calls, utilizing and statistic problems, put forward a digital broadcast⁃ing system of computer network and communication network based on fusion. The system consists of server, digital voice card, telephone and related software and hardware. replaced the telephone coupler traditional telephone system, is a visual, correlation function has not only the traditional communication mode, also increased the meeting, call management, automatic recording and call the query and other functions. Use of the system can effectively improve the hotline processing efficiency, and enhance the brand value of the frequency of traffic.%为了解决在直播节目中热线电话的接听、利用和统计等问题,提出了基于计算机网络与通信网络融合的数字导播系统。该系统由服务器、数字语音卡、话机及相关软硬件构成。取代了传统的电话耦合器,是一款可视化的电话系统,不仅具有传统通话模式的相关功能,还增加了会议、来电管理、自动录音及通话统计查询等功能。系统的使用有效提高了热线电话处理效率,进而提升了交通频率的品牌价值。

  2. 广东数字音频广播的发展%Development of digital audio broadcasting in Guangdong

    Institute of Scientific and Technical Information of China (English)

    冯建道

    2003-01-01

    数字音频广播(Digital Audio Broadcasting,DAB)是继调幅和调频广播之后的新一代广播,与模拟调制的广播相比具有音质好、抗多径干扰较强和恶劣环境下的接收、频谱利用率高、业务构成灵活等优点,是广播事业发展中的一个新的里程碑。

  3. Broadcast satellite service: The international dimension

    Science.gov (United States)

    Samara, Noah

    1991-09-01

    The dawn of the 1990's has witnessed the birth of a new satellite service - satellite sound broadcasting. This new service is characterized by digital transmission at data rates up to 256 kb/s from satellites in geostationary orbit to small, low-cost, mobile and portable receivers. The satellite sound broadcasting service is a logical step beyond navigation satellite service, such as that provided by the GPS Navstar system. The mass market appeal of satellite sound broadcasting in the area of lightsat technology and low-cost digital radios has greatly facilitated the financing of this type of space service.

  4. History of Satellite TV Broadcasting and Satellite Broadcasting Market in Turkey

    Directory of Open Access Journals (Sweden)

    Mihalis KUYUCU

    2015-09-01

    Full Text Available The present study analyses the satellite broadcasting that is the first important development that emerged as a result of digitalization in communication technologies and its reflections in Turkey. As the first milestone in the globalization of television broadcasting, satellite broadcasting provided substantial contribution towards the development of the media. Satellite bro adcasting both increased the broadcasting quality and geographical coverage of the television media. A conceptual study was carried out in the first part of the study in connection with the history of satellite broadcasting in Turkey and across the world. In the research part of the study, an analysis was performed on 160 television channels that broadcast in Turkey via Turksat Satellite. Economic structure of the television channels broadcasting in Turkey via satellite was studied and an analysis was perfo rmed on the operational structure of the channels. As a result of the study, it was emphasized that the television channels broadcasting via satellite platform also use other platforms for the purpose of spreading their broadcasts and television channel ow ners make investments in different branches of the media, too. Capital owners invest in different business areas other than the media although television channels broadcasting via Turksat mostly focus on thematic broadcasting and make effort to generate ec onomic income from advertisements. Delays are encountered in the course of the convergence between the new media and television channels that broadcast only from the satellite platform and such television channels experience more economic problems than the other channels. New media and many TV broadcasting platforms emerged as a result of the developments in the communication technologies. In television broadcasting, satellite platform is not an effective platform on its own. Channels make effort to reach t o more people by using other platforms in addition to

  5. 基于模型的数字音频广播信号调制系统设计%Design of Digital Audio Broadcasting Signal Modulation System Based on Model

    Institute of Scientific and Technical Information of China (English)

    陆探; 张徐亮; 朱伟杰; 朱万经

    2012-01-01

    本文设计并在FPGA芯片中实现了数字音频广播系统的信号调制系统。信号调制系统位于整个数字音频广潘系统基带信号处理链的末端,是基带数字信号处理的核心系统。根据Eureka147标准,信号调制系统需要对输入的基带码流进行数字调制、频域交织、差分调制以及正交频分复用等一系列处理。所设计的信号调制系统能够对输入的基带码流进行实时处理,完成上述信号处理算法,并输出数字音频广播的基带信号。%A signal modulation system of digital audio broadcasting system is designed and implemented in FPGA. Signal modulation system which is at the end of digital audio broadcasting baseband signal processing chain, is the core system of baseband digital signal processing. According to the Eureka 147 standard, signal modulation system completes digital modulation, frequency interleave, differential modulation and orthogonal frequency division multiplexing of the input baseband stream. The signal modulation system can process input baseband stream in real time, completes above signal processing algorithms and outputs digital audio broadcasting baseband signals.

  6. Keyphrase Cloud Generation of Broadcast News

    OpenAIRE

    Marujo, Luis; Viveiros, Márcio; Neto, João Paulo da Silva

    2013-01-01

    This paper describes an enhanced automatic keyphrase extraction method applied to Broadcast News. The keyphrase extraction process is used to create a concept level for each news. On top of words resulting from a speech recognition system output and news indexation and it contributes to the generation of a tag/keyphrase cloud of the top news included in a Multimedia Monitoring Solution system for TV and Radio news/programs, running daily, and monitoring 12 TV channels and 4 Radios.

  7. Very low power consumption Viterbi decoder LSIC employing the SST (Scarce State Transition) scheme for multimedia mobile communications

    Science.gov (United States)

    Seki, K.; Kubota, S.; Mizoguchi, M.; Kato, S.

    1994-04-01

    A very low power consumption Viterbi decoder LSIC has been developed by using a low supply voltage 0.8 micron CMOS master slice process technology. By employing the scarce state transition (SST) scheme, this LSIC achieves a drastic reduction in power consumption below 600 mu W at a supply voltage of IV when the data rate is 1152 kbit/s and the bit error rate is less than 10(exp - 3). This excellent performance has paved the way to employing the strong forward error correction and low power consumption portable terminals for personal communications, mobile multimedia communications, and digital and audio broadcasting.

  8. 基于AD8369的数字音频广播传输系统的研究与实现%Design of Digital Audio Broadcasting Power Amplifier System Based on AD8369

    Institute of Scientific and Technical Information of China (English)

    陆明莹; 刘石; 王国裕; 张红升

    2012-01-01

    This paper introduces in detail the structure and theory of AD8369,it functions inside as a digitally controlled variable gain amplifier,Digital Audio Broadcasting Transmitting System based on A8369 was designed.The system used digitally controlled variable gain amplifier device AD8369 fills the power amplifier in the original Digital Audio Broadcasting system.It presents the block of the structure of system,the hardware structure,the software flow chart,timing control chart,testing and certification and descripes in detail the operational principle and process of the system.%该文详细地介绍了具有内部可控功能的数字可控增益放大器件AD8369的结构与工作原理,设计了基于AD8369的数字音频广播传输系统。本系统采用的数字可控增益放大器件AD8369填补了原数字音频广播系统中没有输出功放的空白。该文给出了系统的结构框图、硬件结构框图、软件流程图和时序控制图及测试和验证,详细介绍了系统工作的原理和流程。

  9. A Survey on Web Multimedia Mining

    CERN Document Server

    Kamde, Pravin M

    2011-01-01

    Modern developments in digital media technologies has made transmitting and storing large amounts of multi/rich media data (e.g. text, images, music, video and their combination) more feasible and affordable than ever before. However, the state of the art techniques to process, mining and manage those rich media are still in their infancy. Advances developments in multimedia acquisition and storage technology the rapid progress has led to the fast growing incredible amount of data stored in databases. Useful information to users can be revealed if these multimedia files are analyzed. Multimedia mining deals with the extraction of implicit knowledge, multimedia data relationships, or other patterns not explicitly stored in multimedia files. Also in retrieval, indexing and classification of multimedia data with efficient information fusion of the different modalities is essential for the system's overall performance. The purpose of this paper is to provide a systematic overview of multimedia mining. This articl...

  10. Metadata for the description of broadcast assets

    DEFF Research Database (Denmark)

    Efthimiadis, Efthimis N.; Mai, Jens Erik; Burrows, Paul E.

    2003-01-01

    The Corporation for Public Broadcasting (CPB) and public broadcasters consider Media Asset Management (MAM) of critical importance since without a concerted and cooperative plan to manage their vast library of content, broadcasters are unable to reach their potential for service in the digital age....... The concerns for Media Asset Management, human and technical, are myriad. Media Asset Management is the framework upon which many of the largest technology projects will be built, including the future interconnection system between and among CPB member stations. It is CPB's hope that its licensees...... and their partners in university, museum, and library communities, will work together to contribute to Media Asset Management solutions. These issues are not unique to Public Broadcasters. Similar issues are faced by all networks at different levels of complexity. This panel will present efforts by broadcasters...

  11. Security in Collaborative Multimedia Web-based Art Projects

    Directory of Open Access Journals (Sweden)

    Dimitrios K. Koukopoulos

    2010-10-01

    Full Text Available We propose a web-based system for organizing the creation and the interaction in multimedia web-based environments that permit the collaboration among artists, audience, curators and publishers. This system uses a threelevel approach for handling security issues in multimedia projects. Especially, it applies authorization, digital certification and watermarking mechanisms on multimedia content. Authorization mechanism controls users operations in multimedia files based on a set of actions imposed on reallife scenarios. Digital certification mechanism ensures the secure content transfers among users and multimedia content server through Web. Digital watermarking mechanism handles copyright-protection and authentication issues that appear in multimedia systems applying a semantically secure watermark. The strength of our system considers multimedia content not as an atomic digital entity, but as a part of a project with a specific workflow that applies watermarking techniques in all its parts.

  12. Terrestrial Digital Television Broadcast Single Frequency Network (SFN) Group Gateway Key Technologies and Test Methods%地面数字电视广播单频网(SFN)组网关键技术与测试方法

    Institute of Scientific and Technical Information of China (English)

    杨延冬; 呼和; 黄艳萍; 吕倩

    2014-01-01

    数字电视是电视信号数字化后的产物,分为有线传输数字电视、卫星传输数字电视、地面无线传输数字电视。地面无线传输数字电视作为电视广播的传统手段,具有简单接收和移动接收的能力,能够满足现代信息化社会“信息到人”的基本需求。数字电视地面广播的传输和使用能克服恶劣环境的影响,从根本上解决了频谱资源紧张的问题,所以数字电视地面广播的推广和产业化将带来不可估量的经济增长。作为地面数字电视广播系统重要组网方式之一的单频网必将随着地面数字电视的发展而迎来高速发展的时期,而国标( DTMB标准)地面数字电视单频网也必将随着DTMB标准的推广及国际化而被更多的国家和地区所采纳,其推广前景广阔。主要阐述地面数字电视广播单频网的组网方式、关键技术与指标、测试方法。%Digital television is the product of the digitized television signal , into the transmission cable digital TV, digital satellite television transmission , radio transmission of digital terrestrial television .Terrestrial wire-less transmission of digital TV is a traditional means of television broadcasting , because of its unique ability to receive simple and mobile reception to meet the modern information society “information to the people ,” the basic needs .Poor transmission of digital terrestrial television broadcasts and the use of the environment and o -vercomes a fundamental solution to the problem of the shortage of spectrum resources , so the promotion of dig-ital terrestrial television broadcasting and industrialization will bring immeasurable economic growth .As SFN important terrestrial digital television broadcasting system with the development of networking , one is bound to terrestrial digital television and usher in a period of rapid development , and the national standard ( DTMB standard ) terrestrial digital

  13. Quantum broadcast communication

    Institute of Scientific and Technical Information of China (English)

    Wang Jian; Zhang Quan; Tang Chao-Jing

    2007-01-01

    Broadcast encryption allows the sender to securely distribute his/her secret to a dynamically changing group of users over a broadcast channel. In this paper, we just take account of a simple broadcast communication task in quantum scenario, in which the central party broadcasts his secret to multi-receiver via quantum channel. We present three quantum broadcast communication schemes. The first scheme utilizes entanglement swapping and GreenbergerHorne-Zeilinger state to fulfil a task that the central party broadcasts the secret to a group of receivers who share a group key with him. In the second scheme, based on dense coding, the central party broadcasts the secret to multi-receiver,each of which shares an authentication key with him. The third scheme is a quantum broadcast communication scheme with quantum encryption, in which the central party can broadcast the secret to any subset of the legal receivers.

  14. Why can't I manage my digital images like MP3s? The evolution and intent of multimedia metadata

    Science.gov (United States)

    Goodrum, Abby; Howison, James

    2005-01-01

    This paper considers the deceptively simple question: Why can't digital images be managed in the simple and effective manner in which digital music files are managed? We make the case that the answer is different treatments of metadata in different domains with different goals. A central difference between the two formats stems from the fact that digital music metadata lookup services are collaborative and automate the movement from a digital file to the appropriate metadata, while image metadata services do not. To understand why this difference exists we examine the divergent evolution of metadata standards for digital music and digital images and observed that the processes differ in interesting ways according to their intent. Specifically music metadata was developed primarily for personal file management and community resource sharing, while the focus of image metadata has largely been on information retrieval. We argue that lessons from MP3 metadata can assist individuals facing their growing personal image management challenges. Our focus therefore is not on metadata for cultural heritage institutions or the publishing industry, it is limited to the personal libraries growing on our hard-drives. This bottom-up approach to file management combined with p2p distribution radically altered the music landscape. Might such an approach have a similar impact on image publishing? This paper outlines plans for improving the personal management of digital images-doing image metadata and file management the MP3 way-and considers the likelihood of success.

  15. Optical links in handheld multimedia devices

    Science.gov (United States)

    van Geffen, S.; Duis, J.; Miller, R.

    2008-04-01

    Ever emerging applications in handheld multimedia devices such as mobile phones, laptop computers, portable video games and digital cameras requiring increased screen resolutions are driving higher aggregate bitrates between host processor and display(s) enabling services such as mobile video conferencing, video on demand and TV broadcasting. Larger displays and smaller phones require complex mechanical 3D hinge configurations striving to combine maximum functionality with compact building volumes. Conventional galvanic interconnections such as Micro-Coax and FPC carrying parallel digital data between host processor and display module may produce Electromagnetic Interference (EMI) and bandwidth limitations caused by small cable size and tight cable bends. To reduce the number of signals through a hinge, the mobile phone industry, organized in the MIPI (Mobile Industry Processor Interface) alliance, is currently defining an electrical interface transmitting serialized digital data at speeds >1Gbps. This interface allows for electrical or optical interconnects. Above 1Gbps optical links may offer a cost effective alternative because of their flexibility, increased bandwidth and immunity to EMI. This paper describes the development of optical links for handheld communication devices. A cable assembly based on a special Plastic Optical Fiber (POF) selected for its mechanical durability is terminated with a small form factor molded lens assembly which interfaces between an 850nm VCSEL transmitter and a receiving device on the printed circuit board of the display module. A statistical approach based on a Lean Design For Six Sigma (LDFSS) roadmap for new product development tries to find an optimum link definition which will be robust and low cost meeting the power consumption requirements appropriate for battery operated systems.

  16. Standardization in technology adoption: A comparison of broadcast TV cases

    OpenAIRE

    Kim, Heejung

    2012-01-01

    Based on developments in the U.S. television, this study illustrates the choice of technical standards by the government. Broadcasting in the U.S. has been largely affected by the adoption of new technology. Technology adoptions have impacted economy, society, industry, and government policies of the U.S. broadcasting. The purpose of this study is to examine standard-setting development and policies for major technology adoptions in broadcasting: color TV adoption and digital TV adoption.

  17. Potential role of smil in digitalization of national heritage

    OpenAIRE

    Tošić, Dušan; Filipović, Vladimir; Tuba, Milan; Kratica, Jozef

    2007-01-01

    XML technologies provide that digitalization of national heritage relies on widely accepted standards. Beside the XML standardized way of text and picture digitalization, there is a similar way for multimedia digitalization. Special XML language, called SMIL (Synchronized Multimedia Integration Language) is used for the multimedia digitalization. This language is very convenient for the digitalization of national heritage like the custom national dresses, popu...

  18. Context based multimedia information retrieval

    DEFF Research Database (Denmark)

    Mølgaard, Lasse Lohilahti

    with the help of contextual knowledge. Our approach to model the context of multimedia is based on unsupervised methods to automatically extract meaning. We investigate two paths of context modelling. The first part extracts context from the primary media, in this case broadcast news speech, by extracting...... through an approximation based on non-negative matrix factorisation NMF. The second part of the work tries to infer the contextual meaning of music based on extra-musical knowledge, in our case gathered from Wikipedia. The semantic relations between artists are inferred using linking structure...

  19. Intelligent Interactive Multimedia by Converging the Intention of Spectator and Multimedia Creator

    Directory of Open Access Journals (Sweden)

    Seow Hooi Tan

    2011-01-01

    Full Text Available In this research, we propose a new approach on how human and technology interact with each other. Here, by enhancing the current HCI framework, it will enable interaction between human and technology become more effective and ideally. The aim of this research is to create an Intelligent Interactive Multimedia by converging the intention of spectator and multimedia creator. Several methods are proposed to achieve the conception of Intelligent Interactive Multimedia. Digital Drawing Block is the interactive multimedia with the initial intention of multimedia creator and it forms an interaction with spectator. Spectator intention has been categorized into four common categories, additionally, five features of hand gesture recognition is proposed to deduce the spectator intention. All these five features will be captured by the web-cam during the spectator’s interaction with the Digital Drawing Block. Moreover, captured features will be sent to the machine learning for analyzing. Proposed user models are to assist the machine learning to evaluate the most appropriate category of human behaviour which matches the spectator actual intention. Lastly, graphic that represents spectator intention will be generated together with the initial intention of multimedia creator. The new creation from spectator and multimedia creator will be displayed through the Digital Drawing Block. The conception of Intelligent Interactive Multimedia can represent as 70%'s effort of Multimedia Creator + 30%'s effort of spectator.

  20. Using Digital Participatory Research to Foster Glocal Competence: Constructing Multimedia Projects as a Form of Global and Civic Citizenship

    Science.gov (United States)

    Mathews, Sarah A.

    2016-01-01

    Digital Participatory Research (DPR) combines grass-roots participatory research and photojournalism, asks students to investigate assets and issues within their community, and facilitates civic participation by using problem-posing and praxis-orientated methods. Although there is a vast amount of research documenting the impact of DPR at the…

  1. From Print to Digital Platforms: A PBL Framework for Fostering Multimedia Competencies and Consciousness in Traditional Journalism Education

    Science.gov (United States)

    Goh, Debbie; Kale, Ugur

    2015-01-01

    The project-based learning (PBL) approach closely reflects the tenets of journalism and provides a potential pedagogical guide for transforming traditional journalism education. This study operationalizes and applies a PBL framework in digitizing a print journalism course. The findings illustrate how the presence of seven key elements of PBL…

  2. Content independence in multimedia databases

    NARCIS (Netherlands)

    Vries, A.P. de

    2001-01-01

    A database management system is a general-purpose software system that facilitates the processes of defining, constructing, and manipulating databases for various applications. This article investigates the role of data management in multimedia digital libraries, and its implications for the design

  3. Semi-Automated Creation of Converged iTV Services: From Macromedia Director Simulations to Services Ready for Broadcast

    Directory of Open Access Journals (Sweden)

    Emmanuel Tsekleves

    2007-07-01

    Full Text Available While sound and video may capture viewers′ attention, interaction can captivate them. This has not been available prior to the advent of Digital Television. In fact, what lies at the heart of the Digital Television revolution is this new type of interactive content, offered in the form of interactive Television (iTV services.On top of that, the new world of converged networks has created a demand for a new type of converged services on a range of mobile terminals (Tablet PCs, PDAs and mobile phones. This paper aims at presenting a new approach to service creation that allows for the semi-automatic translation of simulations and rapid prototypes created in the accessible desktop multimedia authoring package Macromedia Director into services ready for broadcast. This is achieved by a series of tools that de-skill and speed-up the process of creating digital TV user interfaces (UI and applications for mobile terminals.The benefits of rapid prototyping are essential for the production of these new types of services, and are therefore discussed in the first section of this paper. In the following sections, an overview of the operation of content, service, creation and management sub-systems is presented, which illustrates why these tools compose an important and integral part of a system responsible of creating, delivering and managing converged broadcast and telecommunications services. The next section examines a number of metadata languages candidates for describing the iTV services user interface and the schema language adopted in this project. A detailed description of the operation of the two tools is provided to offer an insight of how they can be used to de-skill and speed-up the process of creating digital TV user interfaces and applications for mobile terminals. Finally, representative broadcast oriented and telecommunication oriented converged service components are also introduced, demonstrating how these tools have been used to

  4. Language engineering for the Semantic Web: a digital library for endangered languages. Endangered languages, Ontology, Digital library, Multimedia, EMELD, Intelligent querying and retrieval, ImageSpace

    Directory of Open Access Journals (Sweden)

    Lu Shiyong

    2004-01-01

    Full Text Available In this paper, we describe the effort undertaken at Wayne State University to preserve endangered languages using the state-of-the-art information technologies. In particular, we discuss the issues involved in such an effort, and present the architecture of a distributed digital library for endangered languages which will contain various data of endangered languages in the forms of text, image, video, audio and include advanced tools for intelligent cataloguing, indexing, searching and browsing information on languages and language analysis. We use various Semantic Web technologies such as XML, OLAC, ontologies so that our digital library becomes a useful linguistic resource on the Semantic Web.

  5. Multiple sound channels in satellite broadcasting

    Science.gov (United States)

    Windram, M. D.

    1982-09-01

    Proposals for a common European standard for sound satellite broadcasting are reviewed. Digital techniques are needed to provide multiple sound channels which would carry the stereophonic, multilanguage, and high quality sound desired. Agreement has been reached within the European Broadcasting Union on the digital sound coding parameters; a sampling frequency of 32 kHz should be used for satellite broadcasting, with 14 bits per sample in the initial coding, reduced to 10 bits by near instantaneous companding, if desired. Continuous and packet multiplexing are the two multiplexing techniques being considered. Three proposals for modulation are being considered which employ either a frequency-division or a time-division multiplex system. The close relation between sound and vision, particularly for modulation, is shown. It is likely that sound and vision standards will be agreed upon by spring 1983.

  6. A broadcast engineering tutorial for non-engineers

    CERN Document Server

    Pizzi, Skip

    2014-01-01

    A Broadcast Engineering Tutorial for Non-Engineers is the leading publication on the basics of broadcast technology. Whether you are new to the industry or do not have an engineering background, this book will give you a comprehensive primer of television, radio, and digital media relating to broadcast-it is your guide to understanding the technical world of radio and television broadcast engineering. It covers all the important topics such as DTV, IBOC, HD, standards, video servers, editing, electronic newsrooms, and more.

  7. Digital watermark

    OpenAIRE

    Jasna Maver

    2004-01-01

    The huge amount of multimedia contents available on the World-Wide-Web is beginning to raise the question of their protection. Digital watermarking is a technique which can serve various purposes, including intellectual property protection, authentication and integrity verification, as well as visible or invisible content labelling of multimedia content. Due to the diversity of digital watermarking applicability, there are many different techniques, which can be categorised according to diffe...

  8. A SURVEY ON WEB MULTIMEDIA MINING

    Directory of Open Access Journals (Sweden)

    Pravin M. Kamde

    2011-08-01

    Full Text Available Modern developments in digital media technologies has made transmitting and storing large amounts of multi/rich media data (e.g. text, images, music, video and their combination more feasible and affordable than ever before. However, the state of the art techniques to process, mining and manage those rich media are still in their infancy. Advances developments in multimedia acquisition and storage technology the rapid progress has led to the fast growing incredible amount of data stored in databases. Useful information to users can be revealed if these multimedia files are analyzed. Multimedia mining deals with the extraction of implicit knowledge, multimedia data relationships, or other patterns not explicitly stored in multimedia files. Also in retrieval, indexing and classification of multimedia data with efficient information fusion of the different modalities is essential for the system's overall performance. The purpose of this paper is to provide a systematic overview of multimedia mining. This article is also represents the issues in the application process component for multimedia mining followed by the multimedia mining models.

  9. A SURVEY ON WEB MULTIMEDIA MINING

    Directory of Open Access Journals (Sweden)

    Pravin M. Kamde

    2011-09-01

    Full Text Available Modern developments in digital media technologies has made transmitting and storing large amounts ofmulti/rich media data (e.g. text, images, music, video and their combination more feasible and affordablethan ever before. However, the state of the art techniques to process, mining and manage those rich mediaare still in their infancy. Advances developments in multimedia acquisition and storage technology therapid progress has led to the fast growing incredible amount of data stored in databases. Usefulinformation to users can be revealed if these multimedia files are analyzed. Multimedia mining deals withthe extraction of implicit knowledge, multimedia data relationships, or other patterns not explicitly storedin multimedia files. Also in retrieval, indexing and classification of multimedia data with efficientinformation fusion of the different modalities is essential for the system's overall performance. The purposeof this paper is to provide a systematic overview of multimedia mining. This article is also represents theissues in the application process component for multimedia mining followed by the multimedia miningmodels.

  10. 77 FR 24662 - Determination of Reasonable Rates and Terms for Noncommercial Broadcasting

    Science.gov (United States)

    2012-04-25

    ... Religious/Community Noncommercial Radio Station's broadcast of in-band, on-channel, digital radio (``HD... television and radio broadcasting. Chapter 8 of the Copyright Act requires the Copyright Royalty Judges... Public Radio, the Public Broadcasting Service, and noncommercial radio and television stations...

  11. 76 FR 52632 - Television Broadcasting Services; Panama City, FL

    Science.gov (United States)

    2011-08-23

    ... to experience problems receiving the station's VHF channel 7 digital broadcasts despite two power.... SUPPLEMENTARY INFORMATION: This is a synopsis of the Commission's Notice of Proposed Rule Making, MB Docket...

  12. Multimedia watermarking techniques and applications

    CERN Document Server

    Kirovski, Darko

    2006-01-01

    Intellectual property owners must continually exploit new ways of reproducing, distributing, and marketing their products. However, the threat of piracy looms as a major problem with digital distribution and storage technologies. Multimedia Watermarking Techniques and Applications covers all current and future trends in the design of modern systems that use watermarking to protect multimedia content. Containing the works of contributing authors who are worldwide experts in the field, this volume is intended for researchers and practitioners, as well as for those who want a broad understanding

  13. Radio broadcasting via satellite

    Science.gov (United States)

    Helm, Neil R.; Pritchard, Wilbur L.

    1990-10-01

    Market areas offering potential for future narrowband broadcast satellites are examined, including international public diplomacy, government- and advertising-supported, and business-application usages. Technical issues such as frequency allocation, spacecraft types, transmission parameters, and radio receiver characteristics are outlined. Service and system requirements, advertising revenue, and business communications services are among the economic issues discussed. The institutional framework required to provide an operational radio broadcast service is studied, and new initiatives in direct broadcast audio radio systems, encompassing studies, tests, in-orbit demonstrations of, and proposals for national and international commercial broadcast services are considered.

  14. DVB-H vs. DVB-NGH: A survey and comparison for the evolution of mobile TV broadcasting

    CSIR Research Space (South Africa)

    Bembe, M

    2015-07-01

    Full Text Available DVB-NGH (Digital Video Broadcasting-Next Generation Handheld) is the next generation technology for mobile TV broadcasting. It integrates both satellite and terrestrial techniques, which is vital in supporting rich media content for mobile handheld...

  15. 一种基于DAB接收机的MP3播放器设计方案%MP3 Player Design Based on Digital Audio Broadcasting Receiver

    Institute of Scientific and Technical Information of China (English)

    陆明莹; 彭琨; 王国裕; 张红升

    2011-01-01

    提出了一种基于便携式DAB(Digital Audio BroadcaSting,数字音频广播)接收机的MP3播放器设计方案,并介绍了系统的软硬件设计思路.系统采用ARM7单片机作为系统控制器,利用SD卡存储MP3文件,用ST公司的音频解码芯片STA013实现MP3解码.数字语音信号通过D/A转换器MAX9850转换为模拟语音信号,由耳机输出.%This paper proposes a design method of MP3 player based on DAB(Digital Audio Broadcasting) receiver. The system software and hardware designs are introduced. In this system, ARM7 MCU is used as the controller, SD Card is used to storage MP3 files, and audio decoder chip STA013 is used to decode MP3 files. Digital audio signals are converted to analog voice signals through D/A converter MAX9850, and then the earphones output the voice signals.

  16. Evaluación de la implantación transversal de 4º del Grado en Ingeniería Multimedia, itinerario creación y entretenimiento digital

    OpenAIRE

    2016-01-01

    En esta memoria se describe el proyecto realizado para la evaluación de la implantación transversal del itinerario de Creación y Entretenimiento digital del cuarto curso del Grado en Ingeniería Multimedia de la Escuela Politécnica Superior, como continuación del planteamiento realizado en el proyecto del curso anterior de preparación, coordinación y seguimiento de las asignaturas del citado itinerario (identificador 3013). En el marco creado por los nuevos estudios dentro del EEES, el proyect...

  17. Estudio y planificación de contenidos, materiales y metodologías docentes según el EEES: Itinerario Ocio Digital (Cuarto Curso de Ingeniería Multimedia)

    OpenAIRE

    2015-01-01

    En esta memoria se describe el proyecto realizado para la planificación de contenidos, materiales y metodología docente, y el seguimiento de las asignaturas del itinerario de Creación y Entretenimiento digital del cuarto curso del Grado en Ingeniería Multimedia de la Escuela Politécnica Superior, como continuación del planteamiento realizado en el proyecto de la red de cuarto curso configurada en el año 2012-13 (identificador 2687). En el marco creado por los nuevos estudios dentro del EEES, ...

  18. Milestones in Broadcasting: Antennas.

    Science.gov (United States)

    Media in Education and Development, 1985

    1985-01-01

    Briefly describes the development of antennas in the prebroadcast era (elevated antenna, selectivity to prevent interference between stations, birth of diplex, directional properties, support structures), as well as technological developments used in long-, medium-, and short-wave broadcasting, VHF/FM and television broadcasting, and satellite…

  19. Educational Broadcasting--Radio.

    Science.gov (United States)

    Ahamed, Uvais; Grimmett, George

    This manual is intended for those who must conduct educational radio broadcasting training courses in Asia-Pacific countries without the resources of experienced personnel, as well as for individuals to use in self-learning situations. The selection of material has been influenced by the need to use broadcasting resources effectively in programs…

  20. ATM: The Key To Harnessing the Power of Networked Multimedia.

    Science.gov (United States)

    Gross, Rod

    1996-01-01

    ATM (Asynchronous Transfer Mode) network technology handles the real-time continuous traffic flow necessary to support desktop multimedia applications. Describes network applications already used: desktop video collaboration, distance learning, and broadcasting video delivery. Examines the architecture of ATM technology, video delivery and sound…

  1. Analysis and Improvement of a Secret Broadcast with Binding Encryption in Broadcasting Networks

    Science.gov (United States)

    Zhang, Mingwu; Li, Fagen; Takagi, Tsuyoshi

    A secret broadcasting scheme deals with secure transmission of a message so that more than one privileged receiver can decrypt it. Jeong et al. proposed an efficient secret broadcast scheme using binding encryption to obtain the security properties of IND-CPA semantic security and decryption consistency. Thereafter, Wu et al. showed that the Jeong et al.'s scheme just achieves consistency in relatively weak condition and is also inefficient, and they constructed a more efficient scheme to improve the security. In this letter, we demonstrate that the Wu et al.'s scheme is also a weak decryption consistency and cannot achieve the decryption consistency if an adversary has the ability to tamper with the ciphertext. We also present an improved and more efficient secret broadcast scheme to remedy the weakness. The proposed scheme achieves decryption consistency and IND-CCA security, which can protect against stronger adversary's attacks and allows us to broadcast a digital message securely.

  2. New Classification Methods for Hiding Information into Two Parts: Multimedia Files and Non Multimedia Files

    CERN Document Server

    Alanazi, Hamdan O; Zaidan, B B; Jalab, Hamid A; AL-Ani, Zaidoon Kh

    2010-01-01

    With the rapid development of various multimedia technologies, more and more multimedia data are generated and transmitted in the medical, commercial, and military fields, which may include some sensitive information which should not be accessed by or can only be partially exposed to the general users. Therefore, security and privacy has become an important, Another problem with digital document and video is that undetectable modifications can be made with very simple and widely available equipment, which put the digital material for evidential purposes under question .With the large flood of information and the development of the digital format Information hiding considers one of the techniques which used to protect the important information. The main goals for this paper, provides a general overview of the New Classification Methods for Hiding Information into Two Parts: Multimedia Files and Non Multimedia Files.

  3. 基于TMS320DM642的矿用数字化扩音电话系统设计%Design of Digital Broadcast Telephone System of Coal Mine Based on TMS320DM642

    Institute of Scientific and Technical Information of China (English)

    马正华; 姚刘君; 周炯如

    2012-01-01

    This paper analyzes the existing drawbackg of broadcast telephone system of coal mine, and introduces a design scheme of digital broadcast telephone system of coal mine baaed on Texas Instruments (TI) TMS320DM642 digital processor and TCP/IP protocol. The system makes use of audio codec chip TLV320AIC23B to achieve audio codec and adaptive anti-noise algorithm so that the output audio' s quality could be good to meet standard of the voice in the mine, and then takes advantage of seamlessly connectivity between TMS32ODM642 EMAC and physical layer chip Intel LXT971 to complete digital voice transmission based on embedded TCP/IP protocol stack. In the System software portion, the system integrates audio collection task, audio processing task, network transmission and other tasks by RF5 in the DSP/BIOS. In the telephone terminal voice signals can be output through speakers or headphones to achieve high-quality, remote, and stable voice communications under mine.%通过分析目前的矿用扩音电话系统的现状,为解决矿井下语音通信中高噪声强干扰问题,提出一种基于数字处理器TMS320DM642和嵌入式TCP/IP协议的矿用数字化扩音电话系统的设计方案;采用音频编解码芯片TLV320AIC23B实现语音处理以达到矿井下语音质量的要求,并利用物理层芯片Intel LXT971与TMS320DM642的无缝连接,实现基于嵌入式TCP/IP协议栈的数字语音传输;系统软件采用RF5框架开发,基于DSP/BIOS实现语音采集,语音处理,网络传输等任务;通过对各关键模块测试与分析,系统运行稳定可靠,实现矿用数字化扩音电话的高质量,远距离和稳定的语音通信.

  4. Study on the Effectiveness of Multimedia Network Teaching Management System to Digital Campus%数字校园带动网络多媒体教学系统管理的时效性研究

    Institute of Scientific and Technical Information of China (English)

    鲁立军

    2015-01-01

    根据近几年数字化校园概念的兴起,与现代教育技术日趋成熟,特结合实际工作将数字校园技术引入多媒体教学系统的管理。为进一步提升我校多媒体教学系统的管理效能,促进现代教育技术从业者,在知识的掌握、工作技能的提高和工作责任感的增强,以及对系统安全运行的防护意识等方面提出改革的新思路。%Based on the rise in recent years, the concept of digital campus and modern educational technology is becoming more and more mature, especially in light of the actual work of Digital Campus Technology into the multimedia teaching system management. To further enhance the management efifciency of multimedia teaching system in our school, the promotion of modern education technology practitioners, enhancement in improving the knowledge, skills and sense of responsibility, and puts forward some new ideas in the enhancement of reform of the system safety protection consciousness etc.

  5. Virtual Education-Interactive Multimedia and Chihtren's Development

    Institute of Scientific and Technical Information of China (English)

    朱玉淇(英文名yuki)

    2012-01-01

    Introduction Digital Multimedia is playing an important role nowadays. It is a mixed media that combines animation, interactive computer games, audio, video, texts and images. Multimedia can be used in a lot of areas such as advertisement, art, education, entertainment, engineering, medicine, business, scientific research and spatial temporal applications. It is very popular to use interactive multimedia in education, especially in children's education,

  6. Flexible Broadcasting of Scalable Video Streams in Broadband Wireless System

    Directory of Open Access Journals (Sweden)

    D. Lavanya

    2015-02-01

    Full Text Available This paper presents a novel cross-layer optimization framework to improve the quality of user experience (QOE and energy efficiency of the heterogeneous wireless multimedia broadcast receivers. User grouping is based on the respective UE resolution capabilities and received SNR. A UE capability is determined by the BS at the time of service subscription, when the UE sends its type information, i.e., the number of layers it wants to receive. The UE periodically updated its channel condition to the BS through the uplink channel. This joint optimization is achieved by grouping the users based on their device capabilities and estimated channel conditions experienced by them and broadcasting adaptive content to these groups. The adaptive multimedia content is obtained by using scalable video coding (SVC with optimal source encoding parameters resulted from an innovative cooperative game. Energy saving at user terminals results from using a layer-aware time slicing approach in the transmission stage. Time slicing approach allows discontinuous reception at the UEs, thereby facilitating the UE to turn-off the radio when not receiving data bursts and hence saving energy. A trade-off between energy saving and QOE is observed, and is incorporated in the definition of a utility function of the players in the formulated heterogeneous user composition and physical channel aware game. An adaptive modulation and coding scheme is also optimally incorporated in order to maximize the reception quality of the broadcast receivers, while maximizing the network broadcast capacity.

  7. Multimedia storytelling

    Science.gov (United States)

    Linder, C. A.; Wilbert, M.; Holmes, R. M.

    2010-12-01

    Multimedia video presentations, which integrate still photographs with video clips, audio interviews, ambient sounds, and music, are an effective and engaging way to tell science stories. In July 2009, Linder joined professors and undergraduates on an expedition to the Kolyma River in northeastern Siberia. This IPY science project, called The Polaris Project (http://www.thepolarisproject.org), is an undergraduate research experience where students and faculty work together to increase our understanding of climate change impacts, including thawing permafrost, in this remote corner of the world. During the summer field season, Linder conducted dozens of interviews, captured over 20,000 still photographs and hours of ambient audio and video clips. Following the 2009 expedition, Linder blended this massive archive of visual and audio information into a 10-minute overview video and five student vignettes. In 2010, Linder again traveled to Siberia as part of the Polaris Project, this time mentoring an environmental journalism student who will lead the production of a video about the 2010 field season. Using examples from the Polaris productions, we will present tips, tools, and techniques for creating compelling multimedia science stories.

  8. Financing Public Service Broadcasting

    DEFF Research Database (Denmark)

    Berg, Christian Edelvold; Lund, Anker Brink

    2012-01-01

    Broadcasting (PSB) financing regimes in Europe, concluding that Denmark, Finland, Iceland, Norway, and Sweden may still be considered conventional, licence fee PSB countries, but with some interesting differences in relation to competitive and market oriented alternatives of resource provision...

  9. Broadcasters Hit Home Straight

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    China’s broadcasters enter the final phase of preparations fbr next year’s Olympic Games The most critical information we are keen on delivering is that every- thing is going well,said Sun Weijia, Director of the Media Operations Department of the Beijing Organizing Committee for the Games of of the XXIX Olympiad(BOCOG)on the eve of the 2007 World Broadcasters Conference.

  10. Hadamard quantum broadcast channels

    Science.gov (United States)

    Wang, Qingle; Das, Siddhartha; Wilde, Mark M.

    2017-10-01

    We consider three different communication tasks for quantum broadcast channels, and we determine the capacity region of a Hadamard broadcast channel for these various tasks. We define a Hadamard broadcast channel to be such that the channel from the sender to one of the receivers is entanglement-breaking and the channel from the sender to the other receiver is complementary to this one. As such, this channel is a quantum generalization of a degraded broadcast channel, which is well known in classical information theory. The first communication task we consider is classical communication to both receivers, the second is quantum communication to the stronger receiver and classical communication to other, and the third is entanglement-assisted classical communication to the stronger receiver and unassisted classical communication to the other. The structure of a Hadamard broadcast channel plays a critical role in our analysis: The channel to the weaker receiver can be simulated by performing a measurement channel on the stronger receiver's system, followed by a preparation channel. As such, we can incorporate the classical output of the measurement channel as an auxiliary variable and solve all three of the above capacities for Hadamard broadcast channels, in this way avoiding known difficulties associated with quantum auxiliary variables.

  11. 有线数字电视前端安全播出监测系统的思考与实现%Thinking and Realization of Digital Cable TV Broadcast Safe Monitoring System

    Institute of Scientific and Technical Information of China (English)

    张格

    2012-01-01

    为保障数字电视业务的安全可靠运行,根据睢宁有线数字电视监测的技术需求,并针对数字电视前端播出平台的现状而量身打造一套监测系统。重点介绍睢宁数字电视前端监测系统的工作原理、监测内容及监测软件的主要功能。系统从信道、码流、视音频3个层面实现了全面立体的数字电视监测,通过对各个监测点运行状态的实时监测、指标参数的在线测量,报警集中管理,多画面监测显示,可及时了解信号质量、节目内容,以便快速判断故障点,保障数字电视业务安全、高质量传输。%In order to ensure the transmission security of the digital TV business, according to the requirement of Suining digital cable TV monitoring technology and the present situation of the front platform of the digital television broadcast. I designed a set of monitoring system. This paper mainly introduces the monitoring system working principles, contents and the functions. The system achieves a comprehensive three-dimensional digital monitoring through the channel, bit-stream, audio and video. With the individual monitoring-station of run- ning status of real-time monitoring, index parameters of the online measurement, alarm centralized manage- ment and more monitoring display pictures, we can prompt understanding program and judge fault points quickly, so we can make sure the security of ity transmission. signal quality, the contents of the digital TV business and high qual-

  12. 47 CFR 73.757 - System specifications for single-sideband (SSB) modulated emissions in the HF broadcasting service.

    Science.gov (United States)

    2010-10-01

    ...) modulated emissions in the HF broadcasting service. 73.757 Section 73.757 Telecommunication FEDERAL... broadcasting service. (a) System parameters—(1) Channel spacing. In a mixed DSB, SSB and digital environment... broadcasting does not require a frequency tolerance less than 10 Hz. The degradation mentioned in Note 1...

  13. National association of broadcasters engineering handbook NAB engineering handbook

    CERN Document Server

    Jones, Graham A; Osenkowsky, Thomas G; Williams, Edmund A

    2013-01-01

    The NAB Engineering Handbook provides detailed information on virtually every aspect of the broadcast chain, from news gathering, program production and postproduction through master control and distribution links to transmission, antennas, RF propagation, cable and satellite. Hot topics covered include HD Radio, HDTV, 2 GHz broadcast auxiliary services, EAS, workflow, metadata, digital asset management, advanced video and audio compression, audio and video over IP, and Internet broadcasting. A wide range of related topics that engineers and managers need to understand are also covered, includ

  14. Multimedia information retrieval theory and techniques

    CERN Document Server

    Raieli, Roberto

    2013-01-01

    Novel processing and searching tools for the management of new multimedia documents have developed. Multimedia Information Retrieval (MMIR) is an organic system made up of Text Retrieval (TR); Visual Retrieval (VR); Video Retrieval (VDR); and Audio Retrieval (AR) systems. So that each type of digital document may be analysed and searched by the elements of language appropriate to its nature, search criteria must be extended. Such an approach is known as the Content Based Information Retrieval (CBIR), and is the core of MMIR. This novel content-based concept of information handling needs to be integrated with more traditional semantics. Multimedia Information Retrieval focuses on the tools of processing and searching applicable to the content-based management of new multimedia documents. Translated from Italian by Giles Smith, the book is divided in to two parts. Part one discusses MMIR and related theories, and puts forward new methodologies; part two reviews various experimental and operating MMIR systems, a...

  15. A Mobility-aware Broadcasting Infrastructure for a Wireless Internet with Hotspots

    NARCIS (Netherlands)

    Hesselman, Cristian; Eertink, Henk; Widya, Ing; Huizer, Erik; Kermani, P.

    2003-01-01

    In this paper, we consider the problem of adaptively delivering live multimedia broadcasts (e.g., for applications such as TV, radio, or e-cinema) to a potentially large number of mobile hosts that roam about in a wireless internet with hotspots. We take a user-oriented approach based on an applicat

  16. Video Search: New Challenges in the Pervasive Digital Video Era

    Directory of Open Access Journals (Sweden)

    Stelios Piperidis

    2007-05-01

    Full Text Available The explosion of multimedia digital content and the development of technologies that go beyond traditional broadcast and TV have rendered access to such content important for all end-users of these technologies. While originally developed for providing access to multimedia digital libraries, video search technologies assume now a more demanding role. In this paper, we attempt to shed light onto this new role of video search technologies, looking at the rapid developments in the related market, the lessons learned from state of art video search prototypes developed mainly in the digital libraries context and the new technological challenges that have risen. We focus on one of the latter, i.e., the development of cross-media decision mechanisms, drawing examples from REVEAL THIS, an FP6 project on the retrieval of video and language for the home user. We argue, that efficient video search holds a key to the usability of the new ”pervasive digital video” technologies and that it should involve cross-media decision mechanisms.

  17. Through the Looking Glass: The Multiple Layers of Multimedia.

    Science.gov (United States)

    D'Ignazio, Fred

    1990-01-01

    Describes possible future uses of multimedia computers for instructional applications. Highlights include databases; publishing; telecommunications; computers and videocassette recorders (VCRs); audio and video digitizing; video overlay, or genlock; still-image video; videodiscs and CD-ROM; and hypermedia. (LRW)

  18. Die effek van multimedia leer- en onderrigsteunmateriaal op ...

    African Journals Online (AJOL)

    Journal for Language Teaching ... The purpose of this study was to establish whether the development and implementation of multimedia learning and teaching support material (LTSM) by means of a digital book disc (DBD) would contribute ...

  19. Broadcasted Location-Aware Data Cache for Vehicular Application

    Directory of Open Access Journals (Sweden)

    Fukuda Akira

    2007-01-01

    Full Text Available There has been increasing interest in the exploitation of advances in information technology, for example, mobile computing and wireless communications in ITS (intelligent transport systems. Classes of applications that can benefit from such an infrastructure include traffic information, roadside businesses, weather reports, entertainment, and so on. There are several wireless communication methods currently available that can be utilized for vehicular applications, such as cellular phone networks, DSRC (dedicated short-range communication, and digital broadcasting. While a cellular phone network is relatively slow and a DSRC has a very small communication area, one-segment digital terrestrial broadcasting service was launched in Japan in 2006, high-performance digital broadcasting for mobile hosts has been available recently. However, broadcast delivery methods have the drawback that clients need to wait for the required data items to appear on the broadcast channel. In this paper, we propose a new cache system to effectively prefetch and replace broadcast data using "scope" (an available area of location-dependent data and "mobility specification" (a schedule according to the direction in which a mobile host moves. We numerically evaluate the cache system on the model close to the traffic road environment, and implement the emulation system to evaluate this location-aware data delivery method for a concrete vehicular application that delivers geographic road map data to a car navigation system.

  20. Broadcasted Location-Aware Data Cache for Vehicular Application

    Directory of Open Access Journals (Sweden)

    Kenya Sato

    2007-05-01

    Full Text Available There has been increasing interest in the exploitation of advances in information technology, for example, mobile computing and wireless communications in ITS (intelligent transport systems. Classes of applications that can benefit from such an infrastructure include traffic information, roadside businesses, weather reports, entertainment, and so on. There are several wireless communication methods currently available that can be utilized for vehicular applications, such as cellular phone networks, DSRC (dedicated short-range communication, and digital broadcasting. While a cellular phone network is relatively slow and a DSRC has a very small communication area, one-segment digital terrestrial broadcasting service was launched in Japan in 2006, high-performance digital broadcasting for mobile hosts has been available recently. However, broadcast delivery methods have the drawback that clients need to wait for the required data items to appear on the broadcast channel. In this paper, we propose a new cache system to effectively prefetch and replace broadcast data using “scope” (an available area of location-dependent data and “mobility specification” (a schedule according to the direction in which a mobile host moves. We numerically evaluate the cache system on the model close to the traffic road environment, and implement the emulation system to evaluate this location-aware data delivery method for a concrete vehicular application that delivers geographic road map data to a car navigation system.

  1. 47 CFR 1.4000 - Restrictions impairing reception of television broadcast signals, direct broadcast satellite...

    Science.gov (United States)

    2010-10-01

    ... broadcast signals, direct broadcast satellite services or multichannel multipoint distribution services. 1... Broadcast Satellite Services, or Multichannel Multipoint Distribution Services or the Ability To Receive or... broadcast signals, direct broadcast satellite services or multichannel multipoint distribution services....

  2. The Special Broadcasting Service and Australia's Ethnic Broadcasting Activities.

    Science.gov (United States)

    Sklovsky, G.A.

    1979-01-01

    Broadcasting services for non-English speaking peoples in Australia are reviewed both for radio and television. Broadcasting criteria for ethnic groups, funding levels, and current facilities are discussed. (RAO)

  3. Copyright Protection of Color Video Using Digital Watermarking

    Directory of Open Access Journals (Sweden)

    Majid Masoumi

    2012-07-01

    Full Text Available A huge amount of digital multimedia data is broadcasting daily over the internet. Since digital data can be easily duplicated, intellectual property right protection techniques have become an important issue. In this study, a robust algorithm based on DWT for video copyright protection is proposed. Firstly, the RGB video is converted into YUV color component video, then, in order to make the watermark imperceptible, the luminance layer is only used to embed the watermark and the chrominance layer is left unchanged. In this algorithm, DWT is performed on both watermark image and video I-frames. Using a multiplicative hiding method, watermark image is embedded in its corresponding frequency coefficients of DWT in video I-frames. Based on experimental results the presented method maintains the high transparency of video stream meanwhile resist the watermark against a variety of attacks like: noisy attacks, filtering attacks, blurring attack and compression attacks.

  4. Effectief leren van multimedia

    NARCIS (Netherlands)

    Kester, Liesbeth

    2013-01-01

    Kester, L. (2012, March). Effectief leren van multimedia [Effective learning from multimedia]. Keynote presented at a miniconference Learning Sciences of the Open University of the Netherlands, Eindhoven, the Netherlands.

  5. Effectief leren van multimedia

    NARCIS (Netherlands)

    Kester, Liesbeth

    2013-01-01

    Kester, L. (2012, March). Effectief leren van multimedia [Effective learning from multimedia]. Keynote presented at a miniconference Learning Sciences of the Open University of the Netherlands, Eindhoven, the Netherlands.

  6. Principles of Multimedia News Systems for Business Applications

    Directory of Open Access Journals (Sweden)

    Ioan I. ANDONE

    2009-01-01

    Full Text Available In the past few years considerable demand for business oriented multimedia information systems has developed. A multimedia information system is one that can create, import, integrate, store, retrieve, edit, and delete two or more types of media materials in digital form, such as audio, image, full-motion video, and text information. Multimedia information systems play a central role in many business activities. They represent a very special class complex computing systems. This paper surveys a special type of multimedia information systems: multimedia news systems. Multimedia news systems deal with architectures to manage complex multimedia news databases, online presentation and distribution services or the integration of several existing services to meta-services using intelligent news retrieval engines. The leading presentation platform in multimedia news presentation is news networks providing television services and Internet content distribution. The primary focus is on advanced multimedia news systems infrastructure, document standards, application architecture and principles for multimedia news on the Web that suggest long-term trends in this increasingly important area.

  7. 不同年龄段的间歇性外斜视术后应用数字化多媒体训练的效果%The effect of digital multimedia system training for intermittent exotropia postoperation

    Institute of Scientific and Technical Information of China (English)

    杨莹莹; 陶利娟; 袁东坡

    2016-01-01

    Objective To investigate the effects of postoperative anteroposterior rates and stereopsis of the dif-ferent ages intermittent exotropia patients after digital multimedia systems training. Methods A total of 158 intermittent exotropia patients with the surgical treatment were selected. They were randomly divided into two large groups, the treatment group of 80 patients received postoperative digital multimedia systems binocular vision training, control group 78 cases do not accept binocular training. All patients were then divided according to age group of children (≤10 years), youth (10 to 18 years old), adult group (≥18 years). Check before surgery, and after 1 year of distance stereop-sis and final eye position, and comparative analysis. Results The treatment group compared with the control group, af-ter training digital multimedia systems stereopsis treatment group was significantly more than the number of control group, the difference was statistically significant ( <0.05). Stereopsis recovery among different age difference between treatment groups was statistically significant ( <0.05), age of the smaller, the better the recovery of binocular vision. The final follow-up, the treatment group eventually eye position anteroposterior rates higher, in addition to the adult, the difference was statistically significant ( <0.05).Conclusions Digital multimedia systems training can improve binocular stereoscopic vision and long-term anteroposterior rate of intermittent exotropia patients after surgery, which offers a new way for the clinical treatment of strabismus.%目的:探讨数字化多媒体系统训练对不同年龄段的间歇性外斜视患者术后远近立体视及正位率的影响。方法间歇性外斜视手术患者158例,随机分为2大组,治疗组80例术后接受数字化多媒体系统双眼视觉训练,对照组78例不接受双眼视训练。两组患者均再按照年龄段分为儿童组(≤10岁)、青少年组(10岁~18

  8. A History of Multimedia.

    Science.gov (United States)

    Burke, Larry Kenneth

    The history of multimedia and descriptions of various multimedia events from 1900 to 1972 are presented. The development of multimedia events is described for four eras and four main classifications of events: multiscreen presentations, electronic media and performers, environmental theater, and environments. Five appendixes include a discussion…

  9. Multimedia Authoring and Annotation

    NARCIS (Netherlands)

    Bulterman, D.C.A.; Cesar Garcia, P.S.; Munson, E.; Pimentel, M.G.C.

    2014-01-01

    With the massive amount of captured multimedia, authoring is more relevant than ever. Multimedia content is available in many settings including the web, mobile devices, desktop applications, as well as games and interactive TV. The authoring and production of multimedia documents demands attention

  10. FPGA Implementation of A New Chien Search Block for Reed-Solomon Codes RS (255, 239 Used In Digital Video Broadcasting DVB-T

    Directory of Open Access Journals (Sweden)

    El Habti El Idrissi Anas

    2014-08-01

    Full Text Available The Reed-Solomon codes RS are widely used in communication systems, in particular forming part of the specification for the ETSI digital terrestrial television standard. In this paper a simple algorithm for error detection in the Chien Search block is proposed. This algorithm is based on a simple factorization of the error locator polynomial, which allows reducing the number of components required to implement the proposed algorithm on FPGA board. Consequently, it reduces the power consumption with a percentage which can reach 50 % compared to the basic RS decoder. First, we developed the design of Chien Search Block Second, we generated and simulated the hardware description language source code using Quartus software tools,finally we implemented the proposed algorithm of Chien search block for Reed-Solomon codesRS (255, 239 on FPGA board to show both the reduced hardware resources and low complexity compared to the basic algorithm.

  11. 美国数字音频广播的市场化前景%Market Vista of Digital Audio Broadcasting of America

    Institute of Scientific and Technical Information of China (English)

    薛寅堃; 吴镇扬

    2001-01-01

    美国数字无线电(USADR)和朗讯数字广播(Lucent DR)合并成立爱比克数码(iBiquity Digital)公司.集两家技术之长的爱比克数码开发了独立产权的数字广播关键技术,即增强型带内同频数字音频技术(iDABTM)和增强型感知音频编码技术(PACTM),通过与其它广播台、设备供应商及信息提供商的合作,将加速实现数字音频广播(DAB)的市场化.

  12. Unified broadcast in sensor networks

    DEFF Research Database (Denmark)

    Hansen, Morten Tranberg; Jurdak, Raja; Kusy, Branislav

    2011-01-01

    to consolidate these broadcasts focus on piggybacking information into existing services but such tight coupling between protocols limits code reuse and interoperability of applications. We present Unified Broadcast (UB) which combines broadcasts from multiple protocols while maintaining a modular architecture......Complex sensor network applications include multiple services such as collection, dissemination, time synchronization, and failure detection protocols. Many of these protocols require local state maintenance through periodic broadcasts which leads to high control overhead. Recent attempts...

  13. Generalized no-broadcasting theorem.

    Science.gov (United States)

    Barnum, Howard; Barrett, Jonathan; Leifer, Matthew; Wilce, Alexander

    2007-12-14

    We prove a generalized version of the no-broadcasting theorem, applicable to essentially any nonclassical finite-dimensional probabilistic model satisfying a no-signaling criterion, including ones with "superquantum" correlations. A strengthened version of the quantum no-broadcasting theorem follows, and its proof is significantly simpler than existing proofs of the no-broadcasting theorem.

  14. ARMrayan Multimedia Mobile CMS: a Simplified Approach towards Content-Oriented Mobile Application Designing

    OpenAIRE

    Manashty, Ali Reza; Raji, Mohammad Reza Ahmadzadeh; Jahromi, Zahra Forootan; Rajabzadeh, Amir

    2010-01-01

    The ARMrayan Multimedia Mobile CMS (Content Management System) is the first mobile CMS that gives the opportunity to users for creating multimedia J2ME mobile applications with their desired content, design and logo; simply, without any need for writing even a line of code. The low-level programming and compatibility problems of the J2ME, along with UI designing difficulties, makes it hard for most people -even programmers- to broadcast their content to the widespread mobile phones used by ne...

  15. From Broadcast to Podcast

    DEFF Research Database (Denmark)

    Fibiger, Bo

    2007-01-01

    This paper will present the development from broadcasted educational television up to the actual use of streaming video and mobile units in eLearning. The paper will discuss the following topics: what can we learn from history? – and what are the new challenges and possibilities in mobile technol...

  16. Restricted broadcast process theory

    NARCIS (Netherlands)

    Ghassemi, F.; Fokkink, W.J.; Movaghar, A.; Cerone, A.; Gruner, S.

    2008-01-01

    We present a process algebra for modeling and reasoning about Mobile Ad hoc Networks (MANETs) and their protocols. In our algebra we model the essential modeling concepts of ad hoc networks, i.e. local broadcast, connectivity of nodes and connectivity changes. Connectivity and connectivity changes a

  17. Virtue Broadcasting - directorate change

    CERN Multimedia

    2003-01-01

    The Board of Virtue Broadcasting Plc ("Virtue") have announced the appointment of Mr. Klaus Ackerstaff as the CEO of the main Board. He began his professional career at CERN, where he was responsible for the IT infrastructure of the OPAL (particle physics) project (1/2 page).

  18. PERANCANGAN DAN IMPLEMENTASI APLIKASI INTERNET RADIO MENGGUNAKAN MULTIMEDIA DATABASE MELALUI PENERAPAN ONTOLOGY DAN METADATA

    Directory of Open Access Journals (Sweden)

    M. Rudy Erwansyah

    2012-05-01

    scheduling, reporting, user and ontology. In the implementation of internet application of this radio, the audio data management uses multimedia database by applying metadata and ontology, so that the process of indexing and retrieval can be reused quickly on the broadcast. This application can also be used in carrying out the radio broadcast automatically during specified hours. This internet radio application has been able to meet the needs of radio Heartline.

  19. Repurposing a Feature Film for Interactive Multimedia.

    Science.gov (United States)

    Blanton, Sharon; And Others

    1991-01-01

    Describes how a videodisc of Alfred Hitchcock's film "North by Northwest" was repurposed by adding digitized and computer-generated sound, text, and graphics, to show users the capabilities of interactive multimedia. Recommendations are offered both for working in a design team and for the design of interactive materials. (LRW)

  20. MASTERS: A Virtual Lab on Multimedia Systems for Telecommunications, Medical, and Remote Sensing Applications

    Science.gov (United States)

    Alexiadis, D. S.; Mitianoudis, N.

    2013-01-01

    Digital signal processing (DSP) has been an integral part of most electrical, electronic, and computer engineering curricula. The applications of DSP in multimedia (audio, image, video) storage, transmission, and analysis are also widely taught at both the undergraduate and post-graduate levels, as digital multimedia can be encountered in most…

  1. DRACULA: Dynamic range control for broadcasting and other applications

    Science.gov (United States)

    Gilchrist, N. H. C.

    The BBC has developed a digital processor which is capable of reducing the dynamic range of audio in an unobtrusive manner. It is ideally suited to the task of controlling the level of musical programs. Operating as a self-contained dynamic range controller, the processor is suitable for controlling levels in conventional AM or FM broadcasting, or for applications such as the compression of program material for in-flight entertainment. It can, alternatively, be used to provide a supplementary signal in DAB (digital audio broadcasting) for optional dynamic compression in the receiver.

  2. On-Demand Secure Streaming of Multimedia Data over Cloud

    Directory of Open Access Journals (Sweden)

    Govinda .K

    2013-06-01

    Full Text Available On-demand digital communications on internet/cloud has been predominantly increasing recently. Due to the increase in the communication levels so did the security for the digitalcommunications (called as multimedia Security came into the system. Most Reliable and Secure communication is needed for most of the real time applications like Video conferencing, Medical Image Systems and Entertainment Services. The existing cryptographic techniques that we are currently using for the Data security will not be appropriate for the digital multimedia communication. Hence here comes an urgency to develop some new security protocols for our most rapidly developing Multimedia or Digital communications and to provide security and privacy for multimedia data. This paper provides a light weight mechanism for securing video file on-demand over Cloud.

  3. Digital watermark

    Directory of Open Access Journals (Sweden)

    Jasna Maver

    2000-01-01

    Full Text Available The huge amount of multimedia contents available on the World-Wide-Web is beginning to raise the question of their protection. Digital watermarking is a technique which can serve various purposes, including intellectual property protection, authentication and integrity verification, as well as visible or invisible content labelling of multimedia content. Due to the diversity of digital watermarking applicability, there are many different techniques, which can be categorised according to different criteria. A digital watermark can be categorised as visible or invisible and as robust or fragile. In contrast to the visible watermark where a visible pattern or image is embedded into the original image, the invisible watermark does not change the visual appearance of the image. The existence of such a watermark can be determined only through a watermark ex¬traction or detection algorithm. The robust watermark is used for copyright protection, while the fragile watermark is designed for authentication and integrity verification of multimedia content. A watermark must be detectable or extractable to be useful. In some watermarking schemes, a watermark can be extracted in its exact form, in other cases, we can detect only whether a specific given watermarking signal is present in an image. Digital libraries, through which cultural institutions will make multimedia contents available, should support a wide range of service models for intellectual property protection, where digital watermarking may play an important role.

  4. Digit ratio (2D:4D), sex differences, allometry, and finger length of 12-30-year olds: evidence from the British Broadcasting Corporation (BBC) Internet study.

    Science.gov (United States)

    Manning, John T

    2010-01-01

    Many studies have reported digit ratio (2D:4D) to be sexually dimorphic, (males lower 2D:4D than females). However, Kratochvíl and Flegr ([2009]: Biol Lett 5:643-646) have suggested that 2D regressed on 4D has an allometric regression line with nonzero Y-intercept that is shared by males and females. Thus, 2D is shorter than expected when 4D is long, and males have lower 2D:4D than females because they have longer fingers. In this study, it is shown that this suggestion may be incorrect because sex differences in slope were not considered. Participants were recruited in an Internet study and had an age range of 12-30 years. The expected sex difference in 2D:4D was found, and the regression of 2D on 4D showed a significant sex difference in slope (males lower than females). A comparison of 10 age groups (12 years, 13 years..., 21-30 years) showed that sexual dimorphism for fingers was age dependent, varying from monomorphic to very dimorphic. Changes in sexual dimorphism of 2D:4D were much less marked, but there was a significant reduction in mean 2D:4D with age. The tendency for slopes of 2D regressed on 4D to be lower in males compared with females was significant in eight age groups. Sex difference in 2D:4D varied across the age groups and was positively related to the magnitude of the difference in female and male slopes. In contrast to the report of Kratochvíl and Flegr, it was found that the regression of 2D on 4D showed sex differences in slope, and such differences gave rise to the sexual dimorphism in 2D:4D.

  5. Push and pull models to manage patient consent and licensing of multimedia resources in digital repositories for case-based reasoning.

    Science.gov (United States)

    Kononowicz, Andrzej A; Zary, Nabil; Davies, David; Heid, Jörn; Woodham, Luke; Hege, Inga

    2011-01-01

    Patient consents for distribution of multimedia constitute a significant element of medical case-based repositories in medicine. A technical challenge is posed by the right of patients to withdraw permission to disseminate their images or videos. A technical mechanism for spreading information about changes in multimedia usage licenses is sought. The authors gained their experience by developing and managing a large (>340 cases) repository of virtual patients within the European project eViP. The solution for dissemination of license status should reuse and extend existing metadata standards in medical education. Two methods: PUSH and PULL are described differing in the moment of update and the division of responsibilities between parties in the learning object exchange process. The authors recommend usage of the PUSH scenario because it is better adapted to legal requirements in many countries. It needs to be stressed that the solution is based on mutual trust of the exchange partners and therefore is most appropriate for use in educational alliances and consortia. It is hoped that the proposed models for exchanging consents and licensing information will become a crucial part of the technical frameworks for building case-based repositories.

  6. Handling of Multimedia Files in the Invenio Software

    CERN Document Server

    Oltmanns, Björn; Schiefer, Bernhard

    ‘Handling of multimedia files in the Invenio Software’ is motivated by the need for integration of multimedia files in the open-source, large-scale digital library software Invenio, developed and used at CERN, the European Organisation for Nuclear Research. In the last years, digital assets like pictures, presentations podcasts and videos became abundant in these systems and digital libraries have grown out of their classic role of only storing bibliographical metadata. The thesis focuses on digital video as a type of multimedia and covers the complete workflow of handling video material in the Invenio software: from the ingestion of digital video material to its processing on to the storage and preservation and finally the streaming and presentation of videos to the user. The potential technologies to realise a video submission workflow are discussed in-depth and evaluated towards system integration with Invenio. The focus is set on open and free technologies, which can be redistributed with the Inve...

  7. Quantum broadcast channels

    CERN Document Server

    Yard, J; Devetak, I; Yard, Jon; Hayden, Patrick; Devetak, Igor

    2006-01-01

    We analyze quantum broadcast channels, which are quantum channels with a single sender and many receivers. Focusing on channels with two receivers for simplicity, we generalize a number of results from the network Shannon theory literature which give the rates at which two senders can receive a common message, while a personalized one is sent to one of them. Our first collection of results applies to channels with a classical input and quantum outputs. The second class of theorems we prove concern sending a common classical message over a quantum broadcast channel, while sending quantum information to one of the receivers. The third group of results we obtain concern communication over an isometry, giving the rates at quantum information can be sent to one receiver, while common quantum information is sent to both, in the sense that tripartite GHZ entanglement is established. For each scenario, we provide an additivity proof for an appropriate class of channels, yielding single-letter characterizations of the...

  8. Independent Component Analysis in Multimedia Modeling

    DEFF Research Database (Denmark)

    Larsen, Jan; Hansen, Lars Kai; Kolenda, Thomas

    2003-01-01

    Modeling of multimedia and multimodal data becomes increasingly important with the digitalization of the world. The objective of this paper is to demonstrate the potential of independent component analysis and blind sources separation methods for modeling and understanding of multimedia data, which...... largely refers to text, images/video, audio and combinations of such data. We review a number of applications within single and combined media with the hope that this might provide inspiration for further research in this area. Finally, we provide a detailed presentation of our own recent work on modeling...... combined text/image data for the purpose of cross-media retrieval....

  9. Independent Component Analysis in Multimedia Modeling

    DEFF Research Database (Denmark)

    Larsen, Jan

    Modeling of multimedia and multimodal data becomes increasingly important with the digitalization of the world. The objective of this paper is to demonstrate the potential of independent component analysis and blind sources separation methods for modeling and understanding of multimedia data, which...... largely refers to text, images/video, audio and combinations of such data. We review a number of applications within single and combined media with the hope that this might provide inspiration for further research in this area. Finally, we provide a detailed presentation of our own recent work on modeling...... combined text/image data for the purpose of cross-media retrieval....

  10. Multimedia encryption and authentication techniques and applications

    CERN Document Server

    Furht, Borko

    2006-01-01

    Intellectual property owners must continually exploit new ways of reproducing, distributing, and marketing their products. However, the threat of piracy looms as a major problem with digital distribution and storage technologies. Multimedia Encryption and Authentication Techniques and Applications covers current and future trends in the design of modern systems that use encryption and authentication to protect multimedia content. Containing the works of contributing authors who are worldwide experts in their fields, this volume is intended for researchers and practitioners, as well as for thos

  11. Satellites in Canadian broadcasting

    Science.gov (United States)

    Siocos, C. A.

    The involvement of Canadian broadcasting and related enterprises in satellite telecommunications is surveyed. This includes point-to-point transmissions and direct ones to the general public. The mode of such utilizations is indicated in both these cases. For the forthcoming DBS systems the many types of service offerings and utilization concepts under discussion elasewhere are presented as well as the business prospects and regulatory climate offering them.

  12. Retrieving Radio News Broadcasts in Danish: Accuracy and Categorization of Unrecognized Words

    DEFF Research Database (Denmark)

    Hertzum, Morten; Lund, Haakon; Troelsgaard, Rasmus

    2016-01-01

    Digital archives of radio news broadcasts can possibly be made searchable by combining speech recognition with information retrieval. We explore this possibility for the retrieval of news broadcasts in Danish. An average of 84% of the words in the broadcasts was recognized. Most of the unrecognized...... words were compounds, names, and other words that appear of value to retrieval. Thus, the set of words describing a broadcast has to be expanded to compensate for the recognition errors. We discuss doing this by exploiting the alternative matches from the speech recognizer and by extracting words from...

  13. TV Digital Station Transmitters

    Data.gov (United States)

    Department of Homeland Security — This file is an extract from the Consolidated Database System (CDBS) licensed by the Media Bureau. It consists of Digital Television broadcasters (see Rule Part47...

  14. Multimedia Database Applications: Issues and Concerns for Classroom Teaching

    CERN Document Server

    Yu, Chien

    2011-01-01

    The abundance of multimedia data and information is challenging educators to effectively search, browse, access, use, and store the data for their classroom teaching. However, many educators could still be accustomed to teaching or searching for information using conventional methods, but often the conventional methods may not function well with multimedia data. Educators need to efficiently interact and manage a variety of digital media files too. The purpose of this study is to review current multimedia database applications in teaching and learning, and further discuss some of the issues or concerns that educators may have while incorporating multimedia data into their classrooms. Some strategies and recommendations are also provided in order for educators to be able to use multimedia data more effectively in their teaching environments.

  15. First International Conference Multimedia Processing, Communication and Computing Applications

    CERN Document Server

    Guru, Devanur

    2013-01-01

    ICMCCA 2012 is the first International Conference on Multimedia Processing, Communication and Computing Applications and the theme of the Conference is chosen as ‘Multimedia Processing and its Applications’. Multimedia processing has been an active research area contributing in many frontiers of today’s science and technology. This book presents peer-reviewed quality papers on multimedia processing, which covers a very broad area of science and technology. The prime objective of the book is to familiarize readers with the latest scientific developments that are taking place in various fields of multimedia processing and is widely used in many disciplines such as Medical Diagnosis, Digital Forensic, Object Recognition, Image and Video Analysis, Robotics, Military, Automotive Industries, Surveillance and Security, Quality Inspection, etc. The book will assist the research community to get the insight of the overlapping works which are being carried out across the globe at many medical hospitals and instit...

  16. Digital Steganography

    OpenAIRE

    KOCIÁNOVÁ, Helena

    2009-01-01

    Digital steganography is a technique for hiding data mostly into multimedia files (images, audio, video). With the development of information technology this technique has found its use in the field of copyright protection and secret data transfer, could be even applied in places where is limited possibility of using cryptography (e. g. by law). This thesis gives insight into digital steganography and contains an application using this technique.

  17. Multimedia Information Retrieval

    CERN Document Server

    Rueger, Stefan

    2009-01-01

    At its very core multimedia information retrieval means the process of searching for and finding multimedia documents; the corresponding research field is concerned with building the best possible multimedia search engines. The intriguing bit here is that the query itself can be a multimedia excerpt: For example, when you walk around in an unknown place and stumble across an interesting landmark, would it not be great if you could just take a picture with your mobile phone and send it to a service that finds a similar picture in a database and tells you more about the building -- and about its

  18. The Current Situation and Trends of Digital New Media on Broadcasting and Television%我国广播电视新媒体发展现状及未来趋势

    Institute of Scientific and Technical Information of China (English)

    周小普; 韩娜

    2012-01-01

    新媒体时代的到来给广播电视行业的冲击是巨大的。这些年来,很多新形式的广电媒体相继面世并迅速扩张,给我国传媒业的格局带来了很大的变化,也引发了各界人士有关广电未来的思考。本文将着重阐述我国广电新媒体的现状,在此基础上分析其对广电行业的影响和发展新趋势,并对广电新媒体未来的发展提出一些建议。%The coming of new media era imposes a major shock on traditional broadcasting and television industry. Recent years, the widespread of many new forms of radio and TV media dramatically changed the whole industry. It also stimulated thinking about the future of broadcasting and television industry. This paper will focus on the current situation of new media of broadcasting and television in China, and analyze the impact of new media and the new trends of traditional broadcasting and television industry. It also makes some suggestions of the development of new media on broadcasting and television.

  19. Direct broadcast satellite-radio, receiver development

    Science.gov (United States)

    Vaisnys, A.; Bell, D.; Gevargiz, J.; Golshan, Nasser

    1993-01-01

    The status of the ongoing Direct Broadcast Satellite-Radio (DBS-R) Receiver Development Task being performed at the Jet Propulsion Laboratory, California Institute of Technology (JPL) is reported. This work is sponsored by the Voice of America/U.S. Information Agency through an agreement with NASA. The objective of this task is to develop, build, test, and demonstrate a prototype receiver that is compatible with reception of digital audio programs broadcast via satellites. The receiver is being designed to operate under a range of reception conditions, including fixed, portable, and mobile, as well as over a sufficiently wide range of bit rates to accommodate broadcasting systems with different cost/audio quality objectives. While the requirements on the receiver are complex, the eventual goal of the design effort is to make the design compatible with low cost production as a consumer product. One solution may be a basic low cost core design suitable for a majority of reception conditions, with optional enhancements for reception in especially difficult environments. Some of the receiver design parameters were established through analysis, laboratory tests, and a prototype satellite experiment accomplished in late 1991. Many of the necessary design trades will be made during the current simulation effort, while a few of the key design options will be incorporated into the prototype for evaluation during the planned satellite field trials.

  20. Direct broadcast satellite-radio, receiver development

    Science.gov (United States)

    Vaisnys, A.; Bell, D.; Gevargiz, J.; Golshan, Nasser

    The status of the ongoing Direct Broadcast Satellite-Radio (DBS-R) Receiver Development Task being performed at the Jet Propulsion Laboratory, California Institute of Technology (JPL) is reported. This work is sponsored by the Voice of America/U.S. Information Agency through an agreement with NASA. The objective of this task is to develop, build, test, and demonstrate a prototype receiver that is compatible with reception of digital audio programs broadcast via satellites. The receiver is being designed to operate under a range of reception conditions, including fixed, portable, and mobile, as well as over a sufficiently wide range of bit rates to accommodate broadcasting systems with different cost/audio quality objectives. While the requirements on the receiver are complex, the eventual goal of the design effort is to make the design compatible with low cost production as a consumer product. One solution may be a basic low cost core design suitable for a majority of reception conditions, with optional enhancements for reception in especially difficult environments. Some of the receiver design parameters were established through analysis, laboratory tests, and a prototype satellite experiment accomplished in late 1991. Many of the necessary design trades will be made during the current simulation effort, while a few of the key design options will be incorporated into the prototype for evaluation during the planned satellite field trials.

  1. Digitization

    DEFF Research Database (Denmark)

    Finnemann, Niels Ole

    2014-01-01

    Processes of digitization have for years represented a major trend in the developments of modern society but have only recently been related to processes of mediatization. The purpose of this article is to look into the relation between the concepts of mediatization and digitization and to clarify...... what a concept of digital media might add to the understanding of processes of mediatization and what the concept of mediatization might add to the understanding of digital media. It is argued that digital media open an array of new trajectories in human communication, trajectories which were...... not anticipated in previous conceptualizations of media and mediatization. If digital media are to be included, the concept of mediatization has to be revised and new parameters are to be built into the concept of media. At the same time it is argued that the concept of mediatization still provides a variety...

  2. Multimedia Content Analysis and Indexing for Filtering and Retrieval Applications

    Directory of Open Access Journals (Sweden)

    N. Dimitrova

    1999-01-01

    Full Text Available Today’s multimedia landscape depends on advances in data compression technology coupled with high-bandwidth networks and storage capacity. Given its size and nature, how can multimedia content be analyzed and  indexed?  This paper surveys techniques for content-based analysis, retrieval and filtering of digital images, audio and video and focuses on basic methods for extracting features that will enable indexing and search applications. [ed.

  3. Multimedia Content Analysis and Indexing for Filtering and Retrieval Applications

    OpenAIRE

    1999-01-01

    Today’s multimedia landscape depends on advances in data compression technology coupled with high-bandwidth networks and storage capacity. Given its size and nature, how can multimedia content be analyzed and  indexed?  This paper surveys techniques for content-based analysis, retrieval and filtering of digital images, audio and video and focuses on basic methods for extracting features that will enable indexing and search applications. [ed.

  4. Indexing method of digital audiovisual medical resources with semantic Web integration.

    Science.gov (United States)

    Cuggia, Marc; Mougin, Fleur; Le Beux, Pierre

    2005-03-01

    Digitalization of audiovisual resources and network capability offer many possibilities which are the subject of intensive work in scientific and industrial sectors. Indexing such resources is a major challenge. Recently, the Motion Pictures Expert Group (MPEG) has developed MPEG-7, a standard for describing multimedia content. The goal of this standard is to develop a rich set of standardized tools to enable efficient retrieval from digital archives or the filtering of audiovisual broadcasts on the Internet. How could this kind of technology be used in the medical context? In this paper, we propose a simpler indexing system, based on the Dublin Core standard and compliant to MPEG-7. We use MeSH and the UMLS to introduce conceptual navigation. We also present a video-platform which enables encoding and gives access to audiovisual resources in streaming mode.

  5. VETERAN BROADCASTER LEADS OLYMPIC CHARGE

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    With its leadership team and technological know-how, the Beijing Olympic Broadcasting Co. Ltd. endeavors to bring the Olympics live to people around the globe The first thing that Ma Guoli, Chief Operating Officer of the Beijing Olympic Broadcasting Co.

  6. How we use online broadcasting - Web TV - for community engagement

    Science.gov (United States)

    Allison, M. L.; Conway, F. M.; Matti, J.; Palmer, R.

    2013-12-01

    The Arizona Geological Survey uses online broadcasting (Webcast or 'Web TV') to help fulfill our statutory mission to 'Inform, advise and assist the public in matters concerning the geological processes, materials and landscapes and the development and use of the mineral resources of this state.' We launched a monthly online broadcast called 'Arizona Mining Review' via Livestream, a low-cost or free video streaming service. The show provides news, interviews, and discussions about mining and mineral resources topics of interest in Arizona, the nation's second largest non-fuel mining state. The costs to set up and broadcast are minor. Interviews with local guests are held in a corner of the AZGS conference room with easy chairs and a couch; long-distance interviews are held via Skype. The broadcast originates from a desktop computer with a webcam, a $60 microphone, three sets of earbud headphones and a powered amplifier. During broadcasts, we supplement interview footage with slides, photos, or video clips that we have or are provided by guests. Initial broadcasts were live; recordings of these were later uploaded to our YouTube channel. Because scheduling and executing a live Internet broadcast is stressful and demanding for both the production team and guests, we recently elected to record and produce episodes prior to broadcasting them. This allows us more control over supplementary materials used during the broadcast; it also permits us to record the broadcast using a high-definition digital video camera that cannot be used for streaming video. In addition to the Arizona Mining Review, we record conferences and workshops and special presentations on topical issues. A video on the recently discovered Little Chino fault has drawn over 3,000 views. Our latest presentations are short 1-2 minute 'video abstracts' delivered by authors of new publications released by the Survey. These include maps and graphics from the reports to help illustrate the topics and their

  7. Commercial satellite broadcasting for Europe

    Science.gov (United States)

    Forrest, J. R.

    1988-12-01

    A review is presented of the current television broadcasting situation in European countries, which involves a varied mix of terrestrial VHF or UHF systems and cable networks. A small market has emerged in Europe for receivers using the low-power telecommunications satellite transmission between the program providers and cable network companies. This is expected to change with the launch of medium-power pan-European telecommunication satellites (e.g. ASTRA, EUTELSAT II), which are now directly addressing the market of home reception. DBS (direct broadcast satellite) in the UK, using the D-MAC transmission standard, will offer three additional television channels, data broadcasting services, and a planned evolution to compatible forms of wide-screen, high-definition television. Comments are given on receiver and conditional access system standardization. Some views are expressed on satellite broadcasting as part of an overall broadcasting framework for the future.

  8. Broadcast-Based Spatial Queries

    Institute of Scientific and Technical Information of China (English)

    Kwang-Jin Park; Moon-Bae Song; Chong-Sun Hwang

    2005-01-01

    Indexing techniques have been developed for wireless data broadcast environments, in order to conserve the scarce power resources of the mobile clients. However, the use of interleaved index segments in a broadcast cycle increases the average access latency for the clients. In this paper, the broadcast-based spatial query processing methods (BBS)are presented for the location-based services. In the BBS, broadcasted data objects are sorted sequentially based on their locations, and the server broadcasts the location dependent data along with an index segment. Then, a sequential prefetching and caching scheme is designed to reduce the query response time. The performance of this scheme is investigated in relation to various environmental variables, such as the distributions of the data objects, the average speed of the clients and the size of the service area.

  9. Evolution of broadcast content distribution

    CERN Document Server

    Beutler, Roland

    2017-01-01

    This book discusses opportunities for broadcasters that arise with the advent of broadband networks, both fixed and mobile. It discusses how the traditional way of distributing audio-visual content over broadcasting networks has been complemented by the usage of broadband networks. The author shows how this also gives the possibility to offer new types of interactive or so-called nonlinear services. The book illustrates how change in distribution technology is accelerating the need for broadcasters around the world to adapt their content distribution strategy and how it will impact the portfolios of content they offer. Outlines the shift in broadcast content distribution paradigms and related strategic issues Provides an overview of the new broadcasting ecosystem encompassing new types of content, user habits, expectations, and devices Discusses complementary usage of different distribution technologies and platforms.

  10. Multimedia image and video processing

    CERN Document Server

    Guan, Ling

    2012-01-01

    As multimedia applications have become part of contemporary daily life, numerous paradigm-shifting technologies in multimedia processing have emerged over the last decade. Substantially updated with 21 new chapters, Multimedia Image and Video Processing, Second Edition explores the most recent advances in multimedia research and applications. This edition presents a comprehensive treatment of multimedia information mining, security, systems, coding, search, hardware, and communications as well as multimodal information fusion and interaction. Clearly divided into seven parts, the book begins w

  11. Broadcasting Correlated Gaussians

    CERN Document Server

    Bross, Shraga; Tinguely, Stephan

    2007-01-01

    We consider the transmission of a bi-variate Gaussian source over a one-to-two power-limited Gaussian broadcast channel. Receiver 1 observes the transmitted signal corrupted by Gaussian noise and wishes to estimate the first component of the source. Receiver 2 observes the transmitted signal in larger Gaussian noise and wishes to estimate the second component. We seek to characterize the pairs of mean squared-error distortions that are simultaneously achievable at the two receivers. Our result is that below a certain SNR-threshold an "uncoded scheme" that sends a linear combination of the source components is optimal. The SNR-theshold can be expressed as a function of the source correlation and the distortion at Receiver 1.

  12. MULTIMEDIA ON GEOGRAPHIC NETWORK

    OpenAIRE

    Merlanti, Danilo

    2012-01-01

    In this thesis we investigate the topic of the multimedia contents distribution on a geo- graphic network which is a rarefied and huge field. First of all we have to classify the main parts necessary in the multimedia distribution on a geographic network. The main aspects of a geographic network that will be highlighted in this thesis are: the mechanism used to retrieve the sources of the multimedia content; in the case of the peer-to-peer network on geographic network one of t...

  13. El cuento multimedia interactivo

    OpenAIRE

    Perceval Verde, José María; Tejedor, Santiago

    2006-01-01

    En el marco del presente artículo se reflexiona sobre las posibilidades educativas del cuento multimedia interactivo. En este sentido y tras analizar los orígenes y evolución del cuento, se estudian las novedades que la hipertextualidad, interactividad y convergencia multimedia introducen en la creación de historias ideadas con una finalidad educativa en el marco de la Sociedad de la Información. Del mismo modo, se presenta un proyecto de cuento multimedia interactivo desarrollado en el Máste...

  14. Climate Matters: Increasing Climate Literacy Through Broadcast Meteorologists

    Science.gov (United States)

    Sanford, T. J.; Placky, B. W.

    2015-12-01

    Broadcast meteorologists are among the most trusted members of the media landscape and they have a unique opportunity to reach the broad public with information about climate change. A recent survey by Maibach, et al. (2015) has shown that more than 90% of TV weathercasters think that their audience is at least somewhat interested in learning about the local impacts of climate change and 7 in 10 think that it is appropriate for them to report the science of climate change to their audience. But about half of these TV weathercasters have experienced obstacles to reporting climate change - citing lack of time to research and produce material, in addition to lack of access to appropriate visuals/graphics and access to trusted scientific information. Climate Matters is an NSF funded program that partners with broadcast meteorologists to deliver scientifically sound climate change information to the public that is local and relevant. A team of climate scientists, meteorologists, data analysts, journalists, and multimedia artists analyze and prepare content on a weekly basis so that it may be readily included in a broadcast weather segment, online or during community outreach. The program started as a pilot project with just one meteorologist in 2010 before Climate Central launched a full-time, nationwide program in 2012. Since then, Climate Matters has grown to include over 250 meteorologists strong and in more than 100 markets across the country, including Spanish language TV stations.

  15. From Monologue to Dialogue-Brief Analysis of Interactive Experience Designs in Digital Multimedia Advertising%由独白转向对话——数字多媒体广告的交互体验设计论析

    Institute of Scientific and Technical Information of China (English)

    汪田明; 段建

    2012-01-01

    The birth of digital modes of transmission led to changes in the way of human communication. The power of technology has promoted the advancement of digital multimedia technology and opened a broad space for digital multimedia advertising design. Digital multimedia advertising design is of rich interactive experience and its shift from monologue to dialogue provides a whole new sensory world for the public, evoking feeling interaction between the advertisements and audience, and bringing them detailed, timely, and unlimited advertising information. With its personal - customized, flexible and multi - dimensional interactive experience, advertising design is stirring up a new reform in the development of advertising design.%数字传播方式的诞生导致了人类交流方式的转变。科技力量推动了数字多媒体技术的进步,也为数字多媒体广告设计开拓了广阔的发展空间。富于交互体验性的数字多媒体广告设计由独白转向了对话,为广大受众提供了全新的感官世界,唤起了广告与受众之间的情感互动,带来了详尽的、及时的、无限量的广告信息。个性定制的、灵活多维的交互体验广告设计正在掀起一场广告设计发展历程中的新变革。

  16. Wireless location algorithm using digital broadcasting signals based on neural network%基于神经网络的数字广播信号无线定位算法

    Institute of Scientific and Technical Information of China (English)

    柯炜; 吴乐南; 殷奎喜

    2010-01-01

    为了提高非视距(NLOS)环境下无线定位的准确性和可靠性,提出了一种利用数字广播信号进行移动台定位的神经网络方法.该方法利用神经网络的学习特性和逼近任意非线性函数的能力,建立到达时间(TOA)和到达时间差(TDOA)测量数据与坐标之间的映射关系.将神经网络的连接权值作为非线性动态系统的状态量进行估计,用基于扩展卡尔曼(EKF)的实时神经网络训练算法来训练多层感知器网络.由于基于EKF的训练算法给出的是连接权值的近似最小方差估计,其收敛性要优于误差反向传播(BP)算法.仿真结果表明,该算法在NLOS环境下有较高的定位精度,性能优于BP基的神经网络算法和最小二乘算法;且该定位方法不依赖于特定的NLOS误差分布,也无需视距(LOS)和非视距识别.%In order to enhance the accuracy and reliability of wireless location under non-line-of-sight (NLOS) environments, a novel neural network (NN) location approach using the digital broadcasting signals is presented. By the learning ability of the NN and the closely approximate unknown function to any degree of desired accuracy, the input-output mapping relationship between coordinates and the measurement data of time of arrival (TOA) and time difference of arrival (TDOA) is established. A real-time learning algorithm based on the extended Kalman filter(EKF) is used to train the multilayer perceptron (MLP) network by treating the linkweights of a network as the states of the nonlinear dynamic system. Since the EKF-based learning algorithm approximately gives the minimum variance estimate of the linkweights, the convergence is improved in comparison with the backwards error propagation (BP) algorithm. Numerical results illustrate that the proposed algorithm can achieve enhanced accuracy, and the performance of the algorithm is better than that of the BP-based NN algorithm and the least squares (LS) algorithm in the NLOS

  17. Mathematics for multimedia

    CERN Document Server

    Wickerhauser, Mladen Victor

    2003-01-01

    Mathematics and Multimedia focuses on the mathematics behind multimedia applications. This timely and thoroughly modern text is a rigorous survey of selected results from algebra and analysis, requiring only undergraduate math skills.The topics are `gems'' chosen for their usefulness in understanding and creating application software for multimedia signal processing and communication.The book is aimed at a wide audience, including computer science and mathematics majors and those interested in employing mathematics in multimedia design and implementation. For the instructor, the material is divided into six chapters that may be presented in six lecture hours each. Thus, the entire text may be covered in one semester, with time left for examinations and student projects. For the student,there are more than 100 exercises with complete solutions, and numerous example programs in Standard C. Each chapter ends with suggestions for further reading. A companion website provides more insight for both instructors an...

  18. 多媒体教室智能化管理系统在数字化校园中的应用%The intelligent management system of multimedia classroom in digital campus

    Institute of Scientific and Technical Information of China (English)

    肖景灵; 黄锋

    2012-01-01

    The intelligent management system of multimedia classroom,multimedia classroom network course scheduling system,multimedia classroom network access control system,multimedia classroom network equipment control system,multimedia classroom network monitoring and control system integration,achieved with fewer personnel management more and more multimedia classroom,improve management efficiency,discover in time and solve the problems in the use of multimedia classroom,better service teaching.%采用多媒体教室智能化管理系统,将多媒体教室网络排课系统、多媒体教室网络门禁系统、多媒体教室网络设备控制系统、多媒体教室网络监控系统进行整合集成,实现用较少的人员管理更多的多媒体教室,提高管理效率,及时发现和解决多媒体教室使用中出现的问题,更好地服务教学。

  19. Unified broadcast in sensor networks

    DEFF Research Database (Denmark)

    Hansen, Morten Tranberg; Jurdak, Raja; Kusy, Branislav

    2011-01-01

    Complex sensor network applications include multiple services such as collection, dissemination, time synchronization, and failure detection protocols. Many of these protocols require local state maintenance through periodic broadcasts which leads to high control overhead. Recent attempts...

  20. 47 CFR 73.6019 - Digital Class A TV station protection of low power TV, TV translator, digital low power TV and...

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital Class A TV station protection of low power TV, TV translator, digital low power TV and digital TV translator stations. 73.6019 Section 73... BROADCAST SERVICES Class A Television Broadcast Stations § 73.6019 Digital Class A TV station protection...

  1. Very Low Power Viterbi Decoder Employing Minimum Transition and Exchangeless Algorithms for Multimedia Mobile Communication

    Directory of Open Access Journals (Sweden)

    Prof. S. L. Haridas

    2011-12-01

    Full Text Available A very low power consumption viterbi decoder has been developed by low supply voltage and 0.15 µm CMOS process technology. Significant power reduction can be achieved by modifying the design and implementation of viterbi decoder using conventional techniques traceback and Register Exchange to Hybrid Register Exchange Method (HREM, Minimum Transition Register Exchange Method (MTREM, Minimum Transition Hybrid Register Exchange Method (MTHREM, Register exchangeless Method and Hybrid Register exchangeless Method. By employing the above said schemes such as, HREM, MTREM, MTHREM, Register exchangeless Method and Hybrid Register exchangeless Method; the viterbi decoder achieves a drastic reduction in power consumption below 100 µW at a supply voltage of 1.62 V when the data rate of 5 Mb/s and the bit error rate is less than 10-3. This excellent performance has been paved the way to employing the strong forward error correction and low power consumption portable terminals for personnel communication, mobile multimedia communication and digital audio broadcasting. Implementation insight and general conclusions can particularly benefit from this approach are given.

  2. PERFORMANCE ANALYSIS AND SIMULATION OF VARIOUS BURST TIME PLAN GENERATION METHODS IN BROADBAND SATELLITE MULTIMEDIA SYSTEM

    Institute of Scientific and Technical Information of China (English)

    Feng Shaodong; Li Guangxia; Feng Qi

    2011-01-01

    The Burst Time Plan (BTP) generation is the key for resource allocation in Broadband Satellite Multimedia (BSM) system.The main purpose of this paper is to minimize the system response time to users' request caused by BTP generation as well as maintain the Quality of Service (QoS) and improve the channel utilization efficiency.Traditionally the BTP is generated periodically in order to simplify the implementation of the resource allocation algorithm.Based on the analysis we find that Periodical BTP Generation (P-BTPG) method cannot guarantee the delay performance,channel utilization efficiency and QoS simultaneously,especially when the capacity requests arrived randomly.The Optimized BTP Generation (O-BTPG) method is given based on the optimal scheduling period and scheduling latency without considering the signaling overhead.Finally,a novel Asynchronous BTP Generation (A-BTPG) method is proposed which is invoked according to users' requests.A BSM system application scenario is simulated.Simulation results show that A-BTPG is a trade-off between the performance and signaling overhead which can improve the system performance insensitive to the traffic pattern.This method can be used in the ATM onboard switching satellite system and further more can be expended to Digital Video Broadcasting-Return Channel Satellite (DVB-RCS) system or IP onboard routing BSM system in the future.

  3. CHAOS: User-driven Development of a Metadata Scheme for Radio Broadcast Archives

    DEFF Research Database (Denmark)

    Lykke, Marianne; Bogers, Toine; Larsen, Birger;

    2013-01-01

    CHAOS (Cultural Heritage Archive Open System) is a digital platform for Danish radio broadcasts. Radio broadcasts are an important and vibrant part of our cultural heritage, but providing efficient and effective access to such archives is challenging for lack of a solid digital infrastructure....... The Danish LARM project aims to meet this challenge by making one million hours of radio programs available to humanities researchers through the digital platform CHAOS. CHAOS is being built in close cooperation with the researchers involved in LARM. In this paper, we present the user-driven development...

  4. Automated Metadata in Multimedia Information Systems Creation, Refinement, Use in Surrogates, and Evaluation

    CERN Document Server

    Christel, Michael

    2009-01-01

    Improvements in network bandwidth along with dramatic drops in digital storage and processing costs have resulted in the explosive growth of multimedia (combinations of text, image, audio, and video) resources on the Internet and in digital repositories. A suite of computer technologies delivering speech, image, and natural language understanding can automatically derive descriptive metadata for such resources. Difficulties for end users ensue, however, with the tremendous volume and varying quality of automated metadata for multimedia information systems. This lecture surveys automatic metada

  5. Elaboración de un libro digital multimedia para fortalecer el proceso enseñanza - aprendizaje de la materia de Informática Aplicada para la carrera de Ingeniería en Contabilidad y Auditoría de la Universidad Técnica de Cotopaxi

    OpenAIRE

    Gálvez Rojana, Edgar Danilo

    2015-01-01

    1. Proyecto de Investigación.-- 2. Marco Teórico.-- 3. Organización Metodológica.-- 4. Propuesta.-- 4. Conclusiones y Recomendaciones El presente trabajo se refiere a la elaboración de un Libro Digital Multimedia de la materia de Informática Aplicada para la carrera de Ingeniería en Contabilidad y Auditoría de la Universidad Técnica de Cotopaxi. Dentro del actual documento los propósitos se orientan a elaborar un marco teórico que de un adecuado respaldo a la investigación con temas relaci...

  6. Necesidades comunicativas de los grupos multimedia para el desarrollo y la formación de sus trabajadores en la era de la televisión digital

    Directory of Open Access Journals (Sweden)

    Hipólito Vivar Zurita

    2012-04-01

    Full Text Available El artículo se circunscribe a la línea de investigación del grupo de investigación FONTA “Tecnologías de Servicios de la Sociedad de la Información”, adscrito de la Universidad Complutense de Madrid La información presentada se ha conseguido por medio de una recogida de datos exhaustiva sobre el objeto de estudio, producto de la investigación y la colaboración con empresas directamente implicadas en el desarrollo e implantación de los servicios de valor añadido de la Televisión Digital Terrestre. Por otra parte, los resultados obtenidos serán plasmados en un libro con el que se pretende dar ideas, tanto a las empresas como al sector educativo y formativo incluida la Universidad, para dinamizar flujos de trabajo que inciden directamente en la planificación y desarrollo de un sector tan relevante, desde el punto de vista económico, como es el audiovisual dentro de la Sociedad de la Información.

  7. Broadcast: of audiovisual broadbond

    OpenAIRE

    Kowalski, Marcio Antonio

    2015-01-01

    A sociedade digital nos abraça em todos os aspectos do cotidiano e uma parte significativa da população vive conectada em multiplataformas. Com a instantaneidade dos fluxos de comunicação, vivemos uma rotina onde muitos acessos estão a um “clique” ou toque. A televisão como mídia preponderante durante várias décadas, na sua transição digital comporta uma função além da TV que conhecíamos, como display interativo que se conecta e absorve conteúdos provenientes de várias fontes. Os consagrados ...

  8. Semantic multimedia analysis and processing

    CERN Document Server

    Spyrou, Evaggelos; Mylonas, Phivos

    2014-01-01

    Broad in scope, Semantic Multimedia Analysis and Processing provides a complete reference of techniques, algorithms, and solutions for the design and the implementation of contemporary multimedia systems. Offering a balanced, global look at the latest advances in semantic indexing, retrieval, analysis, and processing of multimedia, the book features the contributions of renowned researchers from around the world. Its contents are based on four fundamental thematic pillars: 1) information and content retrieval, 2) semantic knowledge exploitation paradigms, 3) multimedia personalization, and 4)

  9. Design of Feedback in Interactive Multimedia Language Learning Environments

    Directory of Open Access Journals (Sweden)

    Vehbi Türel

    2012-01-01

    Full Text Available In interactive multimedia environments, different digital elements (i. e. video, audio, visuals, text, animations, graphics and glossary can be combined and delivered on the same digital computer screen (TDM 1997: 151, CCED 1987, Brett 1998: 81, Stenton 1998: 11, Mangiafico 1996: 46. This also enables effectively provision and presentation of feedback in pedagogically more efficient ways, which meets not only the requirement of different teaching and learning theories, but also the needs of language learners who vary in their learning-style preferences (Robinson 1991: 156, Peter 1994: 157f.. This study aims to bring out the pedagogical and design principles that might help us to more effectively design and customise feedback in interactive multimedia language learning environments. While so doing, some examples of thought out and customized computerised feedback from an interactive multimedia language learning environment, which were designed and created by the author of this study and were also used for language learning purposes, will be shown.

  10. Internet multimedia and search mining

    CERN Document Server

    Hua, Xian-Sheng

    2013-01-01

    With the explosion of video and image data available on the Internet, desktops and mobile devices, multimedia search has gained immense importance. This is the first reference book on the subject of internet multimedia search and mining and it will be extremely useful for graduates, researchers and working professionals in the field of information technology and multimedia content analysis.

  11. Multimedia Forensics Is Not Computer Forensics

    Science.gov (United States)

    Böhme, Rainer; Freiling, Felix C.; Gloe, Thomas; Kirchner, Matthias

    The recent popularity of research on topics of multimedia forensics justifies reflections on the definition of the field. This paper devises an ontology that structures forensic disciplines by their primary domain of evidence. In this sense, both multimedia forensics and computer forensics belong to the class of digital forensics, but they differ notably in the underlying observer model that defines the forensic investigator’s view on (parts of) reality, which itself is not fully cognizable. Important consequences on the reliability of probative facts emerge with regard to available counter-forensic techniques: while perfect concealment of traces is possible for computer forensics, this level of certainty cannot be expected for manipulations of sensor data. We cite concrete examples and refer to established techniques to support our arguments.

  12. A direct broadcast satellite-audio experiment

    Science.gov (United States)

    Vaisnys, Arvydas; Abbe, Brian; Motamedi, Masoud

    1992-03-01

    System studies have been carried out over the past three years at the Jet Propulsion Laboratory (JPL) on digital audio broadcasting (DAB) via satellite. The thrust of the work to date has been on designing power and bandwidth efficient systems capable of providing reliable service to fixed, mobile, and portable radios. It is very difficult to predict performance in an environment which produces random periods of signal blockage, such as encountered in mobile reception where a vehicle can quickly move from one type of terrain to another. For this reason, some signal blockage mitigation techniques were built into an experimental DAB system and a satellite experiment was conducted to obtain both qualitative and quantitative measures of performance in a range of reception environments. This paper presents results from the experiment and some conclusions on the effectiveness of these blockage mitigation techniques.

  13. Distinctive Expertise: Multimedia, the Library, and the Term Paper of the Future

    Directory of Open Access Journals (Sweden)

    Gregory A. Mitchell

    2005-03-01

    Full Text Available Multimedia will have a profound effect on libraries duringthe next decade. This rapidly developing technology permits the user to combine digital still images, video, animation, graphics, and audio. It can be delivered in a variety offinished formats, including streaming video on the Web,video on DVD/VCD, embedded digital objects within aWeb page or presentation software such as PowerPoint,utilized within graphic designs, or printed as hardcopy.This article examines the elements of multimedia creation,as well as requirements and recommendations for implementing a multimedia facility in the library.

  14. Multimedia communications: architectural alternatives

    Science.gov (United States)

    McGarty, Terrence P.; Treves, S. T.

    1992-03-01

    Multimedia communications systems are a combination of human interfaces and end users interacting with multimedia data bases and highly disparate but interconnected communications networks. This paper discusses several architectural alternatives and system requirements that will assist in the design and development of MMCS in actual environments. The approaches taken in this paper are based upon the development of such systems in both medical and printing and publishing environments. This paper develops several key concepts as how best to define and structure data in a multimedia environment, how best to integrate the communications elements, and how best to permit the maximum flexibility to the end user to utilize the system's capabilities in the context of a fully conversational environment.

  15. Multimedia for Art ReTrieval (M4ART)

    NARCIS (Netherlands)

    Broek, E.L. van den; Schouten, T.E.; Kok, T.; Hoenkamp, E.C.M.

    2006-01-01

    The prototype for an online Multimedia for Art ReTrieval (M4ART) system is introduced, that provides entrance to the digitized collection of the National Gallery of the Netherlands (the Rijksmuseum). The current online system of the Rijksmuseum is text-based and requires expert knowledge concerning

  16. Defining and Evaluating Video Hyperlinking for Navigating Multimedia Archives

    NARCIS (Netherlands)

    Ordelman, Roeland J.F.; Eskevich, Maria; Aly, Robin; Huet, Benoit; Jones, Gareth J.F.

    2015-01-01

    Multimedia hyperlinking is an emerging research topic in the context of digital libraries and (cultural heritage) archives. We have been studying the concept of video-to-video hyperlinking from a video search perspective in the context of the MediaEval evaluation benchmark for several years. Our tas

  17. Semantic Storyboard of Judicial Debates: A Novel Multimedia Summarization Environment

    Science.gov (United States)

    Fersini, E.; Sartori, F.

    2012-01-01

    Purpose: The need of tools for content analysis, information extraction and retrieval of multimedia objects in their native form is strongly emphasized into the judicial domain: digital videos represent a fundamental informative source of events occurring during judicial proceedings that should be stored, organized and retrieved in short time and…

  18. Multimedia Distribution: A View from the Supply Side.

    Science.gov (United States)

    Kesten, Myles

    1998-01-01

    Describes how multimedia products start as ideas and go through the stages of design, production, manufacturing, and marketing. Highlights include corporate consolidation, market distribution in 1997, encyclopedias and the growing Internet trend, direct marketers and sales, CD-ROM and DVD (digital video disk), costs, and future directions. (AEF)

  19. Multimedia in the University Textiles and Clothing Classes

    Science.gov (United States)

    Batra, Mansi; Marcketti, Sara B.; Ratute, Ashley

    2011-01-01

    Teaching has always been a multimedia enterprise; what has changed dramatically is the technology available for delivering course information. The use of technology for today's "digital native" students is an assumed rather than a novel activity. From a pedagogical perspective, technology is a powerful tool for customizing instruction to the needs…

  20. Exploring Multimedia Web Conferencing

    Directory of Open Access Journals (Sweden)

    Ana-Maria SUDUC

    2009-01-01

    Full Text Available Internet changed the perspective on meetings and also on decision making processes. Virtualization of meetings has become a common way for collaboration among employees, customers, partners, trainees and trainers, etc. Web conferencing allows the collaboration between teams' members to achieve common goals. Without the need of travelling and meeting organization, the web conferencing applications permit the participation of people from different location. Web conferencing applications are multimedia systems that allow various remote collaborations with multiple types of resources. The paper presents an exploratory study on multimedia web conferencing systems, its advantages and disadvantages and also a use case, meant to highlight several of this technology benefits and problems.

  1. Broadcast and Aggregation in BBC

    DEFF Research Database (Denmark)

    Hüttel, Hans; Kiilerich Pratas, Nuno

    2015-01-01

    In this paper we introduce a process calculus BBC that has both forms of communication. For both many-to-one and one-to-many communication, it is often a natural assumption that communication is bounded; this reflects two distinct aspects of the limitations of a medium. In the case of broadcast......, the bound limits the number of possible recipients of a message. In the case of collection, the bound limits the number of messages that can be received. For this reason, BBC uses a notion of bounded broadcast and collection. Moreover, the syntax of the calculus introduces an explicit notion of connectivity...

  2. 75 FR 49528 - Freescale Semiconductor, Inc., Networking and Multimedia Group (“NMG”) Excluding the Multimedia...

    Science.gov (United States)

    2010-08-13

    ... Employment and Training Administration Freescale Semiconductor, Inc., Networking and Multimedia Group (``NMG..., applicable to workers of Freescale Semiconductor, Inc., Networking and Multimedia Group (``NMG''), excluding... Semiconductor, Inc., Networking and Multimedia Group (``NMG''), excluding the Multimedia Applications...

  3. Multimedia architectures: from desktop systems to portable appliances

    Science.gov (United States)

    Bhaskaran, Vasudev; Konstantinides, Konstantinos; Natarajan, Balas R.

    1997-01-01

    Future desktop and portable computing systems will have as their core an integrated multimedia system. Such a system will seamlessly combine digital video, digital audio, computer animation, text, and graphics. Furthermore, such a system will allow for mixed-media creation, dissemination, and interactive access in real time. Multimedia architectures that need to support these functions have traditionally required special display and processing units for the different media types. This approach tends to be expensive and is inefficient in its use of silicon. Furthermore, such media-specific processing units are unable to cope with the fluid nature of the multimedia market wherein the needs and standards are changing and system manufacturers may demand a single component media engine across a range of products. This constraint has led to a shift towards providing a single-component multimedia specific computing engine that can be integrated easily within desktop systems, tethered consumer appliances, or portable appliances. In this paper, we review some of the recent architectural efforts in developing integrated media systems. We primarily focus on two efforts, namely the evolution of multimedia-capable general purpose processors and a more recent effort in developing single component mixed media co-processors. Design considerations that could facilitate the migration of these technologies to a portable integrated media system also are presented.

  4. MULTIMEDIA TECHNOLOGIES IN PRIMARY SCHOOL

    Directory of Open Access Journals (Sweden)

    Vira M. Andriievska

    2010-08-01

    Full Text Available In the article it has been analysed a role of multimedia technologies in primary school. On the basis of conducted analysis of different approaches to interpretation of “multimedia technologies” concept the context of this term is summarized. It is grounded an expedience of the use of multimedia in primary school practice as well as the types of multimedia technologies are selected. The factors which must be taken into account during organization the work of primary school pupils with programmatic facilities such as features of psychophysiologic development of primary school pupils and their educational-cognitive activity; didactics potential of multimedia technologies; features of the use of multimedia in studies; requirements to introduction of multimedia in the educational process of primary school are considered.

  5. On-demand data broadcast scheduling based on AHP and GRA methods in wireless broadcast/UMTS integrated systems

    Institute of Scientific and Technical Information of China (English)

    WANG Hui; LI Chun; JI Yang

    2007-01-01

    The increasing demand for interactive mobile multimedia service is causing the integration of 3rd generation (3G) cellular systems and wireless broadcast systems. The key challenge is to support data dissemination with low response time, request drop rate, and the unfairness of request drop. This article proposes a novel scheduling algorithm called DAG (on-demand scheduling utilizing analytic hierarchy process (AHP) and grey relational analysis (GRA)), which takes multiple factors-waiting time, number of active requests, deadline-into consideration, and models the data scheduling process as a multiple factors' decision-making and best option-selecting process. The proposed approach comprises two parts. The first part applies AHP to decide the relative weights of multiple decision factors according to user requests, while the second adopts GRA to rank the data item alternatives through the similarity between each option and the ideal option. Simulation results are presented to demonstrate that DAG performs well in the multiple criterions mentioned above.

  6. Analysis of Coexistence of DRM Plus and FM Broadcasting Systems

    Directory of Open Access Journals (Sweden)

    K. Ulovec

    2015-12-01

    Full Text Available This paper deals with DRM (Digital Radio Mondiale Plus and FM (Frequency Modulation radio broadcasting systems coexistence. It brings results based on measurement of mutual interferences of each to other. Minimal necessary value of the signal to interference power ratio is measured under the given reception criteria. Results are useful for broadcasting networks planning. Different DRM Plus modes (i.e. combinations of various protection levels and data carriers modulations are assumed in the case of DRM Plus reception interfered with by FM broadcasting. The differences for various modes are crucial for coverage design of DRM Plus system, while protection ratios have been recommended for only two of eight modes until now. Corrections of protection ratios for other modes are proposed in this paper. Different waveforms types of modulating signal for interfering FM signal are tested. The both mono and stereo FM mode and various sound quality criteria are considered in the case of FM broadcasting reception interfered with by DRM Plus. The influence of peak to average power ratio reduction of interfering DRM Plus signal is observed.

  7. Broadcasting Stations of the World; Part II. Amplitude Modulation Broadcasting Stations According to Frequency.

    Science.gov (United States)

    Foreign Broadcast Information Service, Washington, DC.

    This second part of "Broadcasting Stations of the World", which lists all reported radio broadcasting and television stations with the exception of those in the United States which broadcast on domestic channels, covers amplitude modulation broadcasting stations according to frequency in ascending order. Information included covers call letters,…

  8. Broadcasting Stations of the World; Part I. Amplitude Modulation Broadcasting Stations According to Country and City.

    Science.gov (United States)

    Foreign Broadcast Information Service, Washington, DC.

    This first part of "Broadcasting Stations of the World", which lists all reported radio broadcasting and television stations, with the exception of those in the United States which broadcast on domestic channels, covers amplitude modulation broadcasting stations. Information is indexed alphabetically by country and city. Within a city, stations…

  9. Broadcasting Stations of the World; Part III. Frequency Modulation Broadcasting Stations.

    Science.gov (United States)

    Foreign Broadcast Information Service, Washington, DC.

    This third part of "Broadcasting Stations of the World", which lists all reported radio broadcasting and television stations, with the exception of those in the United States which broadcast on domestic channels, covers frequency modulation broadcasting stations. It contains two sections: one indexed alphabetically by country and city, and the…

  10. DOES MULTIMEDIA THEORY APPLY TO ALL STUDENTS? THE IMPACT OF MULTIMEDIA PRESENTATIONS ON SCIENCE LEARNING

    Directory of Open Access Journals (Sweden)

    Peter G. Schrader

    2016-01-01

    Full Text Available User You are logged in as... mocak My Profile Log Out Log Out as User Journal Content Search Search Scope Browse By Issue By Author By Title Indexing/Abstracting -Doaj -Google Scholar -J Gate/Informatics -Ulrich's Under review by: -Ebsco -Journal Seek -info BASE INDEX -ERIC -Ulakbim/tr index Article Tools Abstract Print this article Indexing metadata How to cite item Finding References Review policy Email this article Email the author Related Items Show all The fourth issue of Journal of Learning and Teaching in Digital Age(JOLTIDA has been published. Editorial Board Open Journal Systems Journal Help Notifications View (564 new Manage Information For Readers For Authors For Librarians Creative Commons License Font Size Make font size smaller Make font size default Make font size larger Home About User Home Search Current Archives Announcements Home > Vol 1, No 1 (2016 > Schrader  DOES MULTIMEDIA THEORY APPLY TO ALL STUDENTS? THE IMPACT OF MULTIMEDIA PRESENTATIONS ON SCIENCE LEARNING Peter G. Schrader University of Nevada Las Vegas, USA pg.schrader@unlv.edu Eric E. Rapp ericrapp@icloud.com ABSTRACT In K-12 school settings in the United States, there is a preponderance of information delivered via multimedia to students everyday (e.g., visual aids found in science textbooks, electronic tablets, streamed video content, web pages, animations, and PowerPoint presentations. The cognitive theory of multimedia learning (CTML outlines numerous principles associated with learning from and with multimedia (Mayer, Hegarty, Mayer, & Cambell, 2005. However, the bulk of the research like the CTML has been conducted using college age students (Jones, 2010; McTigue, 2009. There is ample evidence that college age students and younger students exhibit numerous and important differences when learning from multimedia content (Hannus & Hyona, 1999; McTique, 2009; Moreno, 2007; Van Parreren, 1983. As a result, the objective of the current study is to examine the

  11. Modeling Distributed Multimedia Synchronization with DSPN

    Institute of Scientific and Technical Information of China (English)

    宋军; 顾冠群

    1998-01-01

    Multimedia synchronization is the essential technology for the integration of multimedia in distributed multimedia systems.The multimedia synchronization model has been recognized by many researchers as a premise of the implementation of multimedia synchronization.In distributed multimedia systems,the characteristic of multimedia synchronization is dynamic,and the key medium has the priority in multimedia synchronization.The previously proposed multimedia synchronization models cannot meet these requirements.So a new multimedia dynamic synchronization model-DSPN,based on the timed Petri-net has been designed in this paper.This model can not only let the distributed multimedia system keep multimedia synchronization in a more precise and effective manner according to the runtime situation of the system,but also allow the user to interact with the presentation of multimedia.

  12. Multimedia Databases in Perspective

    NARCIS (Netherlands)

    Apers, Peter M.G.; Blanken, Henk; Houtsma, M.A.W.; Unknown, [Unknown

    1997-01-01

    This volume provides much-needed coverage of the technical background to the development of multimedia applications. Based on an advanced summer school run by the University of Twente, each chapter is written by an expert in a particular topic, including enabling technologies, operating systems, ind

  13. Storyboarding Multimedia Interactions.

    Science.gov (United States)

    Martin, Linda C.

    2000-01-01

    Understanding how to include interactivity when designing multimedia-based training (MBT) storyboards is a major key for a successful MBT. Discusses the basic formats of interactions and when to use each format. Describes how to storyboard and areas to address, including: the display area, prompts, branching, programming and graphics notes,…

  14. Creating Meaningful Multimedia Presentations

    NARCIS (Netherlands)

    Hardman, L.; Ossenbruggen, J.R. van

    2006-01-01

    Finding relevant information is one step in the chain of understanding information. Presenting material to a user in a suitable way is a further step. Our research focuses on using semantic annotations of multimedia elements to increase the ”presentability” of retrieved info

  15. The Multimedia Challenge.

    Science.gov (United States)

    Penuel, William R.; Means, Barbara; Simkins, Michael

    2000-01-01

    Teachers implementing a local history project in Belmont, California, had help from a federally funded technology innovation challenge grant: the Challenge 2000 Multimedia Project. Sponsored by a Silicon Valley school-business partnership, the initiative illustrates how technology can transform classroom learning while supporting instructional…

  16. Construction on the Broadcasting of Cultural Value

    Institute of Scientific and Technical Information of China (English)

    Ai Xu

    2011-01-01

    Broadcast host responsible transmission of information, expression of emotion and preserving culture. Construction of broadcasting cultural value will raise the cultural character of the electronic medium itself, provide spiritual power of the people's needs, enhancing the cultural influence of broadcasting on audiences.

  17. Southeast Asian Broadcasting: The Emergence of Thailand.

    Science.gov (United States)

    Anatol, Karl W.; Bittner, John R.

    The historical development and evolution of broadcasting in Thailand, from its beginning in 1919, is narrated. Governmental control of broadcasting is discussed briefly, and the development of Southeast Asia's first television station, Thai Television Channel 4, is also surveyed. Today, radio broadcasting in Thailand utilizes A.M., F.M., and F.M.…

  18. 47 CFR 73.14 - AM broadcast definitions.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false AM broadcast definitions. 73.14 Section 73.14 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.14 AM broadcast definitions. AM broadcast band. The band of frequencies extending...

  19. 47 CFR 73.128 - AM stereophonic broadcasting.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false AM stereophonic broadcasting. 73.128 Section 73.128 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.128 AM stereophonic broadcasting. (a) An Am broadcast...

  20. Survey on Broadcasting in VANETs

    Directory of Open Access Journals (Sweden)

    Shereen A.M. Ahmed

    2014-05-01

    Full Text Available This study aims to evaluate, categorize and compare the Vehicular Ad-hoc Network (VANET broadcasting protocols. Massive amount of VANET broadcasting protocols have been proposed in the literature. Aiming efficiency, reliability, scalability and reach-ability each of them adopts certain techniques to provide a certain level of functionality. This study distinguishes the VANET routing protocols in several categorizes according to the applications it may serve. By focusing into broadcasting protocols, the study further divides the reviewed algorithms according to the techniques they used to initiate the communication, which would be either through beaconing, handshaking, or instant broadcasting. These protocols are further classified according to the criteria that have been used to select the next forwarder. The criteria usually influenced by the targeted performance of the technique. Such criteria may include furthest node from the sender, the node with the best link quality, endanger nodes, nodes with high probability of forwarding and backbone nodes. Performance metrics that are used for quantitative evaluation are suggested.

  1. Lossless Compression of Broadcast Video

    DEFF Research Database (Denmark)

    Martins, Bo; Eriksen, N.; Faber, E.

    1998-01-01

    We investigate several techniques for lossless and near-lossless compression of broadcast video.The emphasis is placed on the emerging international standard for compression of continous-tone still images, JPEG-LS, due to its excellent compression performance and moderatecomplexity. Except for one...

  2. Assessing the Effects of Using Gagne's Events of Instructions in a Multimedia Student-Centred Environment: A Malaysian Experience

    Science.gov (United States)

    Neo, Tse-Kian; Neo, Mai; Teoh, Belinda Soo-Phing

    2010-01-01

    The inclusion of digital multimedia into teaching and learning has changed instructional strategies in the classroom. While this course has been traditionally given in lecture-based environment, an attempt was made to move it towards a more multimedia-mediated environment to provide a student-centred approach in teaching the principles of…

  3. Introducing the Virtual Astronomy Multimedia Project

    Science.gov (United States)

    Wyatt, Ryan; Christensen, L. L.; Gauthier, A.; Hurt, R.

    2008-05-01

    The goal of the Virtual Astronomy Multimedia Project (VAMP) is to promote and vastly multiply the use of astronomy multimedia resources—from images and illustrations to animations, movies, and podcasts—and enable innovative future exploitation of a wide variety of outreach media by systematically linking resource archives worldwide. High-quality astronomical images, accompanied by rich caption and background information, abound on the web and yet prove notoriously difficult to locate efficiently using existing search tools. The Virtual Astronomy Multimedia Project offers a solution via the Astronomy Visualization Metadata (AVM) standard. Due to roll out in time for IYA2009, VAMP manages the design, implementation, and dissemination of the AVM standard for the education and public outreach astronomical imagery that observatories publish. VAMP will support implementations in World Wide Telescope, Google Sky, Portal to the Universe, and 365 Days of Astronomy, as well as Uniview and DigitalSky software designed specifically for planetariums. The VAMP workshop will introduce the AVM standard and describe its features, highlighting sample image tagging processes using diverse tools—the critical first step in getting media into VAMP. Participants with laptops will have an opportunity to experiment first hand, and workshop organizers will update a web page with system requirements and software options in advance of the conference (see http://virtualastronomy.org/ASP2008/ for links to resources). The workshop will also engage participants in a discussion and review of the innovative AVM image hierarchy taxonomy, which will soon be extended to other types of media.

  4. A Scheduling Method to Reduce Waiting Time for Close-Range Broadcasting

    Directory of Open Access Journals (Sweden)

    Yusuke Gotoh

    2012-01-01

    Full Text Available Due to the recent popularization of digital broadcasting systems, close-range broadcasting using continuous media data, i.e. audio and video, has attracted great attention. For example, in a drama, after a user watches interesting content such as a highlight scene, he/she will watch the main program continuously. In close-range broadcasting, the necessary bandwidth for continuously playing the two types of data increases. Conventional methods reduce the necessary bandwidth by producing an effective broadcast schedule for continuous media data. However, these methods do not consider the broadcast schedule for two types of continuous media data. When the server schedules two types of continuous media data, waiting time that occurs from finishing the highlight scene to starting the main scene, may increase. In this paper, we propose a scheduling method to reduce the waiting time for close-range broadcasting. In our proposed method, by dividing two types of data and producing an effective broadcast schedule considering the available bandwidth, we can reduce the waiting time.

  5. The Role of a Digital Librarian in the Management of Digital Information Systems (DIS).

    Science.gov (United States)

    Sreenivasulu, V.

    2000-01-01

    Discusses the need for digital librarians who will manage and organize digital libraries. Topics include digital information systems; the information superhighway; navigation, browsing, and filtering; multimedia searching and indexing; data mining; information access and retrieval; competencies and skills for a digital librarian; and professional…

  6. Visual impact in the digital press: a Spanish empirical research

    Directory of Open Access Journals (Sweden)

    Joan Francesc Fondevila Gascón

    2010-12-01

    Full Text Available Visual resource (photography and video inclusion in digital journalism is obtaining importance in the multimedia area. The principal resources of digital press are multimedia, hypertext and interactivity. Multimedia is in an initial process of evolution. The objective of this research is to observe empirically the use of visual resources by the digital pure player press. These media try to take advantage of the new multimedia possibilities in the development and presentation of the contents. We have analyzed empirically video and photography inclusion in the multimedia framework (text, photography, video, audio, infograph and animation programs in four digital newspapers (Libertad Digital and El Plural, in Spanish, and Vilaweb.cat and e-Noticies, in Catalan analyzed according to journalistic genres.

  7. Experimental service of 3DTV broadcasting relay in Korea

    Science.gov (United States)

    Hur, Namho; Ahn, Chung-Hyun; Ahn, Chieteuk

    2002-11-01

    This paper introduces 3D HDTV relay broadcasting experiments of 2002 FIFA World Cup Korea/Japan using a terrestrial and satellite network. We have developed 3D HDTV cameras, 3D HDTV video multiplexer/demultiplexer, a 3D HDTV receiver, and a 3D HDTV OB van for field productions. By using a terrestrial and satellite network, we distributed a compressed 3D HDTV signal to predetermined demonstration venues which are approved by host broadcast services (HBS), KirchMedia, and FIFA. In this case, we transmitted a 40Mbps MPEG-2 transport stream (DVB-ASI) over a DS-3 network specified in ITU-T Rec. G.703. The video/audio compression formats are MPEG-2 main-profile, high-level and Dolby Digital AC-3 respectively. Then at venues, the recovered left and right images by the 3D HDTV receiver are displayed on a screen with polarized beam projectors.

  8. Enhancing Digital Skills Training: Interactive Multimedia Instruction

    Science.gov (United States)

    2012-05-01

    repeat the roles as coaches increru~e as to perfonn tasks. perfort! lllll <~e ofth~ students can perform th11 instructor. tasks independently...will be that students will spend more time learning through the process of problem solving. This means that instructors will have lllll !S control

  9. User-centered digital preservation of multimedia

    NARCIS (Netherlands)

    Broek, van den Egon L.; Sluis, van der Frans; Schouten, Theo E.

    2010-01-01

    Everything expressed by humans in whatever form, arouses emotions in every one, who witnesses that expression. Those emotions are dependent on the witness and vary over time. For instance, an expression like "I'm now going to smoke a cigar in my office" uttered today brings about other emotions than

  10. Design of CMA's Broadcast System for Meteorological Data-CMACast%中国气象局卫星广播系统( CMACast)设计

    Institute of Scientific and Technical Information of China (English)

    王春芳; 李湘; 陈永涛; 蒋克俭

    2012-01-01

    Due to broad coverage, low-cost user equipment and easy installation, data broadcast system based on commercial communication satellite has been considered to be the most effective way for data dissemination worldwide. CMA has implemented three satellite broadcast systems, PCVSAT, DVB-S and FENGYUN-Cast since 1998. PCVSAT and DVB-S, which are Ku band systems covering China and surrounding area, are primarily used to distribute land and air based observation data and products. FENGYUNCast, which is a C-band system covering Asia and part of the south-western Pacific area, is primarily used to distribute space-based observation data and derived products from Fengyun series satellites of China. FENGYUNCast becomes part of GEONETCast Centre of GENONETCast Network in Asia-Pacific region in 2008. Currently PCVSAT, DVB-S and FENGYUNCast have 2400, 700 and 200 users respectively.The coexistence of three broadcast system causes inefficiency and inconvenience to both CMA and users. In 2008, CMA started to build a new system, CMACast, to consolidate the services and users of the three systems together. CMACast is a multimedia dissemination system based on the second-generation Digital Video Broadcast (DVB-S2) technology with both file and multimedia transmission capability, employing a whole 36 MHz C-band transponder of AsiaSat-4 and the transmission capacity can reach up to 70 Mb-ps. Besides high data rate, CMACast is expected to enhance user management and data exchange cooperation with other regional GEONETCast Network Centres (GNC), including EUMETCast and GEONETCast Americas.CMACast is not only the main component of CMA national and international communication system, but also the main component of WMO IGDDS and GEONETCast. The infrastructural, main function and key technology of CMACast and its comparison between PCVSAT, DVB-S, FENGYUNCast, EUMETCast and GEONETCast A-mericas are introduced. Infrastructural introduction includes system architecture, coverage and capacity

  11. Teaching of Multimedia Presentation Creation

    OpenAIRE

    Ingrid Nagyová; Milan Turčáni

    2008-01-01

    Multimedia presentation has its well-founded place in classwork and in the teaching process itself. Multimedia enables teachers to speak to their pupils and students through pictures and sounds. Computer presentation accompanies the teacher in the teaching process that thus becomes more comprehensive, well-considered and effective. In addition classwork supported by multimedia activities is more interesting and attractive for students. There is no doubt that the competence and skill in creati...

  12. Ontology driven framework for multimedia information retrieval in P2P network

    CERN Document Server

    Sokhn, Maria

    During the last decade we have witnessed an exponential growth of digital documents and multimedia resources, including a vast amount of video resources. Videos are becoming one of the most popular media thanks to the rich audio, visual and textual content they may convey. The recent technological advances have made this large amount of multimedia resources available to users in a variety of areas, including the academic and scientific realms. However, without adequate techniques for effective content based multimedia retrieval, this large and valuable body of data is barely accessible and remains in effect unusable. This thesis explores semantic approaches to content based management browsing and visualization of the multimedia resources generated for and during scientific conferences. Indeed, a so-called semantic gap exists between the explicit knowledge representation required by users who search the multimedia resources and the implicit knowledge conveyed within a conference life cycle. The aim of this wo...

  13. Intelligent Interactive Multimedia

    CERN Document Server

    Watanabe, Toyohide; Takahashi, Naohisa; 5th International Conference on Intelligent Interactive Multimedia Systems and Services

    2012-01-01

    This volume contains the Proceedings of the 5th International Conference on Intelligent Interactive Multimedia Systems and Services (KES-IIMSS-12).  The Conference was jointly organised by Nagoya University in Japan and the KES International organisation, and held in the attractive city of Gifu.   The KES-IIMSS conference series, (series chairs Prof. Maria Virvou and Prof. George Tsihrintzis), presents novel research in various areas of intelligent multimedia system relevant to the development of a new generation of interactive, user-centric devices and systems.  The aim of the conference is to provide an internationally respected forum for scientific research in the technologies and applications of this new and dynamic research area.

  14. Secure and Reliable IPTV Multimedia Transmission Using Forward Error Correction

    Directory of Open Access Journals (Sweden)

    Chi-Huang Shih

    2012-01-01

    Full Text Available With the wide deployment of Internet Protocol (IP infrastructure and rapid development of digital technologies, Internet Protocol Television (IPTV has emerged as one of the major multimedia access techniques. A general IPTV transmission system employs both encryption and forward error correction (FEC to provide the authorized subscriber with a high-quality perceptual experience. This two-layer processing, however, complicates the system design in terms of computational cost and management cost. In this paper, we propose a novel FEC scheme to ensure the secure and reliable transmission for IPTV multimedia content and services. The proposed secure FEC utilizes the characteristics of FEC including the FEC-encoded redundancies and the limitation of error correction capacity to protect the multimedia packets against the malicious attacks and data transmission errors/losses. Experimental results demonstrate that the proposed scheme obtains similar performance compared with the joint encryption and FEC scheme.

  15. Throughput Scaling Of Convolution For Error-Tolerant Multimedia Applications

    CERN Document Server

    Anam, Mohammad Ashraful

    2012-01-01

    Convolution and cross-correlation are the basis of filtering and pattern or template matching in multimedia signal processing. We propose two throughput scaling options for any one-dimensional convolution kernel in programmable processors by adjusting the imprecision (distortion) of computation. Our approach is based on scalar quantization, followed by two forms of tight packing in floating-point (one of which is proposed in this paper) that allow for concurrent calculation of multiple results. We illustrate how our approach can operate as an optional pre- and post-processing layer for off-the-shelf optimized convolution routines. This is useful for multimedia applications that are tolerant to processing imprecision and for cases where the input signals are inherently noisy (error tolerant multimedia applications). Indicative experimental results with a digital music matching system and an MPEG-7 audio descriptor system demonstrate that the proposed approach offers up to 175% increase in processing throughput...

  16. Flash Builder charting and multimedia

    CERN Document Server

    Rocchi, Cesare

    2010-01-01

    Charting and multimedia are two vital tools for data-driven applications. Learn about the main components of the chart library included in Flash Builder, and see how to build and customize widely used charts. Turning your attention to the multimedia capabilities of the Flex framework, you will review the multimedia components built into the Flex library, and learn how to use ActionScript to manipulate video and audio files. Charting and Multimedia is the third of five articles that will be compiled in the book, Data Visualization with Flash Builder: Designing RIA and AIR Applications with Rem

  17. Direct Broadcast Satellite: Radio Program

    Science.gov (United States)

    Hollansworth, James E.

    1992-01-01

    NASA is committed to providing technology development that leads to the introduction of new commercial applications for communications satellites. The Direct Broadcast Satellite-Radio (DBS-R) Program is a joint effort between The National Aeronautics and Space Administration (NASA) and The United States Information Agency/Voice of America (USIA/VOA) directed at this objective. The purpose of this program is to define the service and develop the technology for a direct-to-listener satellite sound broadcasting system. The DBS-R Program, as structured by NASA and VOA, is now a three-phase program designed to help the U.S. commercial communications satellite and receiver industry bring about this new communications service. Major efforts are being directed towards frequency planning hardware and service development, service demonstration, and experimentation with new satellite and receiver technology.

  18. Performance Evaluation and Parameter Optimization of SoftCast Wireless Video Broadcast

    Directory of Open Access Journals (Sweden)

    Dongxue Yang

    2015-08-01

    Full Text Available Wireless video broadcast plays an imp ortant role in multimedia communication with the emergence of mobile video applications. However, conventional video broadcast designs suffer from a cliff effect due to separated source and channel encoding. The newly prop osed SoftCast scheme employs a cross-layer design, whose reconstructed video quality is prop ortional to the channel condition. In this pap er, we provide the p erformance evaluation and the parameter optimization of the SoftCast system. Optimization principles on parameter selection are suggested to obtain a b etter video quality, o ccupy less bandwidth and/or utilize lower complexity. In addition, we compare SoftCast with H.264 in the LTE EPA scenario. The simulation results show that SoftCast provides a b etter p erformance in the scalability to channel conditions and the robustness to packet losses.

  19. Blended Learning in the Visual Communications Classroom: Student Reflections on a Multimedia Course

    Science.gov (United States)

    George-Palilonis, Jennifer; Filak, Vincent

    2009-01-01

    Advances in digital technology and a rapidly evolving media landscape continue to dramatically change teaching and learning. Among these changes is the emergence of multimedia teaching and learning tools, online degree programs, and hybrid classes that blend traditional and digital content delivery. At the same time, visual communication programs…

  20. PROSPECTS AND CHALLENGES FOR THE RADIO IN THE DIGITAL ERA

    Directory of Open Access Journals (Sweden)

    Antonio Francisco Magnoni

    2012-04-01

    Full Text Available Radio is the communication vehicle that most people use to receive information and entertainment every day. Portability, the proximity of broadcasters to their audiences and low-cost receivers have for many decades sustained radio's popularity. More recently, the radio has benefited from the growth of the automotive fleet and the huge amount of cellphones, which free radio receivers. A survey carried out in 2010 by the Radio Professionals Groups (GPR on radio consumption by Brazilians, pointed out that 74% of them listen to Radio in traditional receivers, 63% listen on the internet, 61% on car radio, 37% Cellular, 21% through devices such as MP3, MP4 and IPhone; 12% through cable TV audio channels and 3% via mobile internet. The GPR survey presents significant numbers of listeners in each type of radio reception device. These are clear indications that the same listener is regularly tuning in to their favorite stations on more than one type of radio receiver. The new variable demonstrates that the digitalization of production, transmission and reception, besides turning the radio into a vehicle with multimedia language, has also added the possibility of multi-tuning. In other words, the radio messages were received by the listeners in several terminals, all endowed with multimedia tools and resources for interactivity. It is the evidence that radio has definitely entered the binary and converging territory of cyberspace. From now on, the formation of the various professional careers for radio production will have to take into account the transformations of the vehicle in the digital era.

  1. Sports broadcasting, journalism and the challenge of new media

    Directory of Open Access Journals (Sweden)

    Kirsten Frandsen

    2012-01-01

    Full Text Available This article explores the challenge faced by established media organisations integrating digital media in their production. Using a case study of a Danish broadcaster’s use of blogs in their coverage of major sports events, it is argued that the challenge is strategic in a broader sense, as the move to digital platforms is influenced by economic, organisational as well as conceptual parameters for roles. It is argued that in order to understand the potential and challenges of this case, the peculiarities of the role of sports journalists in broadcasting have to be taken into consideration. The case illustrates how their distinctive engagement with their topic and the audience makes some of them more prone to work for pleasure and produce for the digital platform on very unclear conditions, just as it influences the interaction that takes place in the blogs in various ways.

  2. Sports broadcasting, journalism and the challenge of new media

    Directory of Open Access Journals (Sweden)

    Kirsten Frandsen

    2012-01-01

    Full Text Available This article explores the challenge faced by established media organisations integrating digital media in their production. Using a case study of a Danish broadcaster’s use of blogs in their coverage of major sports events, it is argued that the challenge is strategic in a broader sense, as the move to digital platforms is influenced by economic, organisational as well as conceptual parameters for roles. It is argued that in order to understand the potential and challenges of this case, the peculiarities of the role of sports journalists in broadcasting have to be taken into consideration. The case illustrates how their distinctive engagement with their topic and the audience makes some of them more prone to work for pleasure and produce for the digital platform on very unclear conditions, just as it influences the interaction that takes place in the blogs in various ways.

  3. Fabula: A Bilingual Multimedia Authoring Environment for Children Exploring Minority Languages

    OpenAIRE

    2002-01-01

    Fabula, an interdisciplinary project funded by the EU Multimedia Software programme, provides software to enable children learning European minority languages to create bilingual digital books. We share a set of assumptions and approaches to the key issues addressed by the project. First, bilingual books are a powerful teaching tool of great value in multilingual classrooms. Second, the graphic design of books has important effects in finding inventive solutions to problems. Third, multimedia...

  4. A semantic middleware to enhance current multimedia retrieval systems with content-based functionalities

    OpenAIRE

    2011-01-01

    210 p. : graf. [EN]This work reviews the information retrieval theory and focuses on the revolution experimented in that field promoted by the digitalization and the widespread use of the multimedia information. After analyzing the trends and promising results in the main disciplines surrounding the content-based information retrieval field, this thesis proposes a reference model for Multimedia Information Retrieval that aims to contextualize the thesis contributions. According to this ref...

  5. Tangible Objects: The Missing Attribute in Multimedia Learning Systems for Preschoolers

    OpenAIRE

    Chau Kien Tsong; Lili Budiman; Toh Seong Chong; Zarina Samsudin; Wan Ahmad Jaafar Wan Yahaya

    2012-01-01

    Based on the idea of constructivism, cognitivism, Atkinson & Shiffrin and Kieras & Meyer’s EPIC human memory theories, tangible objects are considered the missing attribute in digital multimedia learning systems for preschoolers. Because of negligence to this attribute, a learning gap emerges between preschoolers and multimedia system. The gap is reflected in the cognitive capability of a preschooler whose cognition is still in a state of preoperational level and the condition of ...

  6. Cognitive Synergy in Multimedia Learning

    Science.gov (United States)

    Kim, Daesang; Kim, Dong-Joong; Whang, Woo-Hyung

    2013-01-01

    The main focus of our study was to investigate multimedia effects that had different results from the findings of existing multimedia learning studies. First, we describe and summarize three experimental studies we conducted from 2006 to 2010. Then we analyze our findings to explore learner characteristics that may impact the cognitive processes…

  7. The Features of Multimedia Teaching

    Institute of Scientific and Technical Information of China (English)

    DuYaomei

    2004-01-01

    The first feature of a multimedia teaching system lies in that it has to incorporate into its own the synchronic teaching vs. the diachronic teaching in different time "zones". The priority of such multimedia approach is that the learner can arrange and control their own time and energy and the whole teaching schedule in close accordance with their own actual situations and interests.

  8. Multimedia Modules for Electromagnetics Education.

    Science.gov (United States)

    De Los Santos Vidal, Oriol; Iskander, Magdy F.

    1997-01-01

    Multimedia technology is an invaluable teaching and learning resource. One advantage of technology based education is the ability to combine practical applications, visualization of complex mathematical and abstract subjects, virtual labs, and guided use of simulation software. This article describes several multimedia tutorials for…

  9. Multimedia Principle in Teaching Lessons

    Science.gov (United States)

    Kari Jabbour, Khayrazad

    2012-01-01

    Multimedia learning principle occurs when we create mental representations from combining text and relevant graphics into lessons. This article discusses the learning advantages that result from adding multimedia learning principle into instructions; and how to select graphics that support learning. There is a balance that instructional designers…

  10. Prensa digital en 2006

    OpenAIRE

    2007-01-01

    Radiography about the situation of digital press in Spain in the beginning of 2006, including the next points: number of digital media, multimedia evolution, media without printed counterparts, participation services, search systems, free versus payment, and distribution with rss. The article includes a discussion in the IweTel list with the participation of Lluís Codina, Jorge Serrano Cobos, Àngels Jiménez and Rosana López Carreño.

  11. USING RADIO NEWS BROADCASTS AS LISTENING MATERIAL

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    INTRODUCTION As English teachers, we have devoted a lot of time to the teaching of listening comprehension using radio broadcasts. We began by using VOA news in special English with freshmen and a mixture of news in special English and standard news broadcasts with sophomores. Later BBC news was used. We accumulated a considerable amount of experience and did some research into the design of listening comprehension exercises. This article discusses how listening ability may be improved by using such broadcasts.

  12. A father protocol for quantum broadcast channels

    CERN Document Server

    Dupuis, F; Dupuis, Fr\\'ed\\'eric; Hayden, Patrick

    2006-01-01

    We present a new protocol for quantum broadcast channels based on the fully quantum Slepian-Wolf protocol. The protocol yields an achievable rate region for entanglement-assisted transmission of quantum information through a quantum broadcast channel that can be considered the quantum analogue of Marton's region for classical broadcast channels. The protocol can be adapted to yield achievable rate regions for unassisted quantum communication and for entanglement-assisted classical communication. Regularized versions of all three rate regions are provably optimal.

  13. 47 CFR 73.1250 - Broadcasting emergency information.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Broadcasting emergency information. 73.1250... RADIO BROADCAST SERVICES Rules Applicable to All Broadcast Stations § 73.1250 Broadcasting emergency information. (a) Emergency situations in which the broadcasting of information is considered as furthering...

  14. 37 CFR 381.2 - Definition of public broadcasting entity.

    Science.gov (United States)

    2010-07-01

    ... broadcasting entity. 381.2 Section 381.2 Patents, Trademarks, and Copyrights COPYRIGHT ROYALTY BOARD, LIBRARY... WITH NONCOMMERCIAL EDUCATIONAL BROADCASTING § 381.2 Definition of public broadcasting entity. As used in this part, the term public broadcasting entity means a noncommercial educational broadcast...

  15. 47 CFR 73.297 - FM stereophonic sound broadcasting.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false FM stereophonic sound broadcasting. 73.297... RADIO BROADCAST SERVICES FM Broadcast Stations § 73.297 FM stereophonic sound broadcasting. (a) An FM... broadcasting, equipment performance measurements must be made to ensure that the transmitted signal...

  16. RTnet: a real-time protocol for broadcast-capable networks

    NARCIS (Netherlands)

    Hanssen, Ferdy; Jansen, Pierre G.; Scholten, Hans; Hattink, Tjalling

    2004-01-01

    This paper presents an overview of a real-time network protocol, meant to be used on fully-connected local area networks with a broadcast capability. The intended use of this protocol is an in-home digital network, with support for on-the-fly addition and removal of network nodes, for resource-lavis

  17. VISUAL IMPACT IN THE DIGITAL PRESS: a spanish empirical research

    Directory of Open Access Journals (Sweden)

    Joan Francesc Fondevila Gascón

    2010-12-01

    Full Text Available Visual resource (photography and video inclusion in digitaljournalism is obtaining importance in the multimedia area. Theprincipal resources of digital press are multimedia, hypertextand interactivity. Multimedia is in an initial process of evolution.The objective of this research is to observe empirically the useof visual resources by the digital pure player press. Thesemedia try to take advantage of the new multimedia possibilitiesin the development and presentation of the contents. We haveanalyzed empirically video and photography inclusion inthe multimedia framework (text, photography, video, audio,infograph and animation programs in four digital newspapers(Libertad Digital and El Plural, in Spanish, and Vilaweb.cat ande-Noticies, in Catalan analyzed according to journalistic genres.

  18. Secrecy in Cooperative Relay Broadcast Channels

    CERN Document Server

    Ekrem, E

    2008-01-01

    We investigate the effects of user cooperation on the secrecy of broadcast channels by considering a cooperative relay broadcast channel. We show that user cooperation can increase the achievable secrecy region. We propose an achievable scheme that combines Marton's coding scheme for broadcast channels and Cover and El Gamal's compress-and-forward scheme for relay channels. We derive outer bounds for the rate-equivocation region using auxiliary random variables for single-letterization. Finally, we consider a Gaussian channel and show that both users can have positive secrecy rates, which is not possible for scalar Gaussian broadcast channels without cooperation.

  19. 计算机多媒体和音像技术的智能应用%The Intelligent Application of Computer Multimedia, Audio and Video Technology

    Institute of Scientific and Technical Information of China (English)

    赵美玉

    2014-01-01

    Since the emergence of computer technology, the content of computer technology has permeated to any field of the social application. Great changes in the development of human in computer multimedia digital era have occurred. We experienced the rapid development of digital technology, audio and video technology, and saw that it was penetrated into all aspects of the society and life with an amazing speed. The digital technology, audio and video technology has been fully penetrated into the broadcast television field, and will bring real change on our industry. To clearly grasp the development trend of digital audio technology has very important significance in promoting the digital process of film and television field. This paper describes the application of computer multimedia and video technology, video audio and video conference system and image compression technology.%自从计算机技术出现后,在社会应用的任何领域无不渗透着计算机技术的内容。计算机多媒体数字化时代对人类的发展产生了巨大的变化,我们亲身经历了数字技术和音像技术的蓬勃发展,目睹了它以惊人的速度,渗透到社会与生活的方方面面。数字化技术和音像技术已全面的进入到广播影视领域,正对我们的行业带来实质性的变革。清楚地把握数字音频技术的发展动向,对正确推进广播影视领域的数字化进程将有极其重要的意义。本文对计算机等多媒体和音像技术的应用、视频音像会议系统、图像压缩技术等进行了一个阐述。

  20. Automatization of Student Assessment Using Multimedia Technology.

    Science.gov (United States)

    Taniar, David; Rahayu, Wenny

    Most use of multimedia technology in teaching and learning to date has emphasized the teaching aspect only. An application of multimedia in examinations has been neglected. This paper addresses how multimedia technology can be applied to the automatization of assessment, by proposing a prototype of a multimedia question bank, which is able to…

  1. Broadcasting: Does It Belong in the Department of Speech? Traditional Concepts in Speech and Broadcasting.

    Science.gov (United States)

    Greene, Robert J.

    Educational institutions were among the pioneers in the development of radio broadcasting. By 1938, over 300 colleges reported offering at least one course in radio. In more recent times the surveys compiled by Harold Niven for the "Journal of Broadcasting" show a continued interest in broadcasting courses. The trend is toward Communications or…

  2. 47 CFR 73.1692 - Broadcast station construction near or installation on an AM broadcast tower.

    Science.gov (United States)

    2010-10-01

    ... AM station to return to the direct method of power determination. (d) Tower erections or... installation on an AM broadcast tower. 73.1692 Section 73.1692 Telecommunication FEDERAL COMMUNICATIONS... Stations § 73.1692 Broadcast station construction near or installation on an AM broadcast tower. Where...

  3. Cable Television and Satellite Broadcasting

    Science.gov (United States)

    Blackburn, J. F.

    1990-05-01

    Sponsored by the Financial Times, this 2-day conference was the eighth in the annual series. This particular conference marks the end of the first year of the Sky Television network's operation in the U.K. The conference was held just before British Satellite Broadcasting (BSB) goes into operation. With speakers from the U.K., the U.S., France, Japan, and the Netherlands, attendance exceeded all previous conferences. The 400 participants came mainly from the U.K., but also represented were France, the Netherlands, U.S., Australia, Spain, Norway, Canada, Switzerland, Denmark, Federal Republic of Germany (FRG), Finland, Monaco, Belgium, South Africa, Italy, Luxembourg, Irish Republic, and Malta.

  4. Watershed Education for Broadcast Meteorologists

    Science.gov (United States)

    Lamos, J. P.; Sliter, D.; Espinoza, S.; Spangler, T. C.

    2006-12-01

    The National Environmental Education and Training Organization (NEETF) published a report in 2005 that summarized the findings of ten years of NEETF and Roper Research. The report stated, "Our years of data from Roper surveys show a persistent pattern of environmental ignorance even among the most educated and influential members of society." Market research has also shown that 80% of television viewers list the weather as the primary reason for watching the local news. Broadcast meteorologists, with a broader understanding of environmental and related sciences have an opportunity to use their weathercasts to inform the public about the environment and the factors that influence environmental health. As "station scientists," broadcast meteorologists can use the weather, and people's connection to it, to broaden their understanding of the environment they live in. Weather and watershed conditions associated with flooding and drought have major human and environmental impacts. Increasing the awareness of the general public about basic aspects of the hydrologic landscape can be an important part of mitigating the adverse effects of too much or too little precipitation, and of protecting the environment as well. The concept of a watershed as a person's natural neighborhood is a very important one for understanding hydrologic and environmental issues. Everyone lives in a watershed, and the health of a watershed is the result of the interplay between weather and human activity. This paper describes an online course to give broadcast meteorologists a basic understanding of watersheds and how watersheds are impacted by weather. It discusses how to convey watershed science to a media- savvy audience as well as how to model the communication of watershed and hydrologic concepts to the public. The course uses a narrative, story-like style to present its content. It is organized into six short units of instruction, each approximately 20 minutes in duration. Each unit is

  5. Surgical education through video broadcasting.

    Science.gov (United States)

    Nagengast, Eric S; Ramos, Margarita S; Sarma, Hiteswar; Deshpande, Gaurav; Hatcher, Kristin; Magee, William P; Campbell, Alex

    2014-09-01

    Surgical training is facing new obstacles. As advancements in medicine are made, surgeons are expected to know more and to be able to perform more procedures. In the western world, increasing restrictions on residency work hours are adding a new hurdle to surgical training. In low-resource settings, a low attending-to-resident ratio results in limited operative experience for residents. Advances in telemedicine may offer new methods for surgical training. In this article, the authors share their unique experience using live video broadcasting of surgery for educational purposes at a comprehensive cleft care center in Guwahati, India.

  6. Multimedia and ubiquitous engineering MUE 2013

    CERN Document Server

    Ng, Joseph; Jeong, Hwa; Waluyo, Borgy

    2013-01-01

    The new multimedia standards (for example, MPEG-21) facilitate the seamless integration of multiple modalities into interoperable multimedia frameworks, transforming the way people work and interact with multimedia data. These key technologies and multimedia solutions interact and collaborate with each other in increasingly effective ways, contributing to the multimedia revolution and having a significant impact across a wide spectrum of consumer, business, healthcare, education, and governmental domains. Multimedia and Ubiquitous Engineering provides an opportunity for academic and industry professionals to discuss recent progress in the area of multimedia and ubiquitous environment including models and systems, new directions, novel applications associated with the utilization and acceptance of ubiquitous computing devices and systems.

  7. 小学生到底喜欢什么样的学习资源*--梅耶多媒体学习原则对数字原住民适用性的实证研究%What are the Favorite Learning Resources for Elementary Students:An Empirical Research on the Compatibility of Mayer’s Multimedia Learning Principles for Digital Natives

    Institute of Scientific and Technical Information of China (English)

    孙众; 骆力明

    2015-01-01

    Digital textbooks are expected to recommend personalized learning resources to learners according to individuals’ learning preference and cognitive ability. Mayer had proposed multimedia learning principles for designing and developing multimedia resources. The aim of this research is to explore the compatibility of Mayer’s theory while designing personalized digital textbooks for the digital natives. 72 fifth graders participated in this study to choose their favorite types, suitable difficulties and preferred combination of digital multimedia learning resources. The results indicate the majority of Mayer’s theory is compatible to the choice of participants such as Multimedia and Modality principles. However, the ifndings show that Redundancy principles fail to ift for the current learners. Students preferre graphics, narration and on-screen text to graphics and narration. This study helps researchers and teachers to construct personalized learning resources in the digital textbooks for students of today.%根据资源偏好和学习难度为学习者提供个性化资源,是数字教材应该具备的功能。上世纪末梅耶等人提出的多媒体学习原则,曾在学习资源设计与开发中发挥了重要的指导作用。那么为数字原住民设计数字教材时,这些原则是否依然适用?该文以72名小学生作为被试,研究他们对资源类型、组合方式和难度的学习偏好,从而验证梅耶理论对数字原住民的适用性。结果发现被试的偏好选择与梅耶的多媒体学习原则基本吻合,但也出现了一些偏差。该文的结论为数字教材中个性化学习资源推送策略提供了实证基础。

  8. Equilibrium in a random viewer model of television broadcasting

    DEFF Research Database (Denmark)

    Hansen, Bodil Olai; Keiding, Hans

    2014-01-01

    The authors considered a model of commercial television market with advertising with probabilistic viewer choice of channel, where private broadcasters may coexist with a public television broadcaster. The broadcasters influence the probability of getting viewer attention through the amount...

  9. 78 FR 42700 - Radio Broadcasting Services; Matagorda, Texas

    Science.gov (United States)

    2013-07-17

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Matagorda, Texas AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Audio Division, at the request of Tejas Broadcasting Ltd., LLP... broadcasting. Federal Communications Commission. Nazifa Sawez, Assistant Chief, Audio Division, Media...

  10. 76 FR 76337 - Television Broadcasting Services; Lincoln, NE

    Science.gov (United States)

    2011-12-07

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Lincoln, NE AGENCY: Federal Communications... Lincoln Broadcasting, LLC (``LBL''), the licensee of KFXL-TV, channel 51, Lincoln, Nebraska, requesting... 73 Television, Television broadcasting. Federal Communications Commission Barbara A. Kreisman,...

  11. Multimedia and Decision-Making Process

    Directory of Open Access Journals (Sweden)

    Ovidiu-Alin DOBRICAN

    2009-01-01

    Full Text Available Multimedia technology has changed the way we use computers. Multimedia transforms com-puters into a second person. Multimedia technology has made it possible for us to see, hear, read, feel, and talk to computers. Multimedia technology has transformed our use and understanding of computers. On the other hand, multimedia presentation is one of the fastest-growing sectors of the computer industry. Applications have appeared in many areas, such as training, education, business presentation, merchandising, and communications.

  12. Live broadcast from the Globe

    CERN Multimedia

    La tête au carréTuesday, 17 June 2008 between 2.00 and 3.00 p.m.“La tête au carré”, a France Inter radio programme devoted to science, will set up its sound booth at CERN for a special broadcast on the LHC.The journalist Mathieu Vidard will interview the following guests: - Pierre Van Hove, an experimental physicist working on CMS. He is a CNRS research scientist from the Institut Hubert Curien in Strasbourg, France.- Abdelhak Djouadi is a theoretical physicist. He is a research director at the CNRS’s Laboratoire de physique théorique at Orsay, France and holder of the CNRS silver medal.- Magali Gruwe, one of the engineers in charge of LHC operations at CERN.» To take part in this live broadcast, which is open to the public, come to the Globe at 1:30 p.m. The number of places is limited.» No specialist knowledge required.» See the programme's homepage

  13. Designing high-quality interactive multimedia learning modules.

    Science.gov (United States)

    Huang, Camillan

    2005-01-01

    Modern research has broadened scientific knowledge and revealed the interdisciplinary nature of the sciences. For today's students, this advance translates to learning a more diverse range of concepts, usually in less time, and without supporting resources. Students can benefit from technology-enhanced learning supplements that unify concepts and are delivered on-demand over the Internet. Such supplements, like imaging informatics databases, serve as innovative references for biomedical information, but could improve their interaction interfaces to support learning. With information from these digital datasets, multimedia learning tools can be designed to transform learning into an active process where students can visualize relationships over time, interact with dynamic content, and immediately test their knowledge. This approach bridges knowledge gaps, fosters conceptual understanding, and builds problem-solving and critical thinking skills-all essential components to informatics training for science and medicine. Additional benefits include cost-free access and ease of dissemination over the Internet or CD-ROM. However, current methods for the design of multimedia learning modules are not standardized and lack strong instructional design. Pressure from administrators at the top and students from the bottom are pushing faculty to use modern technology to address the learning needs and expectations of contemporary students. Yet, faculty lack adequate support and training to adopt this new approach. So how can faculty learn to create educational multimedia materials for their students? This paper provides guidelines on best practices in educational multimedia design, derived from the Virtual Labs Project at Stanford University. The development of a multimedia module consists of five phases: (1) understand the learning problem and the users needs; (2) design the content to harness the enabling technologies; (3) build multimedia materials with web style standards and

  14. Television broadcast from space systems: Technology, costs

    Science.gov (United States)

    Cuccia, C. L.

    1981-01-01

    Broadcast satellite systems are described. The technologies which are unique to both high power broadcast satellites and small TV receive-only earth terminals are also described. A cost assessment of both space and earth segments is included and appendices present both a computer model for satellite cost and the pertinent reported experience with the Japanese BSE.

  15. The Production and Teaching of Broadcast News.

    Science.gov (United States)

    Wiley, Gale F.

    1987-01-01

    Presents description of local-area network of personal computers installed in the Broadcast News Laboratory at the University of Texas at Austin to help produce and teach broadcast news. Highlights include development and design of the system, software and hardware considerations, and the use of tutorials for writing and technical concepts. (LRW)

  16. Statistical Trends in Broadcasting. Ninth Edition.

    Science.gov (United States)

    Blair (John) and Co., New York, NY.

    A review of trends in broadcasting and an overall economic profile of the broadcasting industry for 1972, with projections for 1973, are given by a collection of tables and graphs. The first portion presents data on total advertising expenditures and trends, along with information on the gross national product and personal consumption spending.…

  17. Language Choice in Transnational Radio Broadcasting.

    Science.gov (United States)

    Wood, Richard E.

    1979-01-01

    Discusses the comparative strength of language use as measured by languages used in transnational radio broadcasting. Findings indicate that politics and Christian evangelism are the two major concerns dominating broadcasting and that language selection policy influences political, social, and cultural change. (JMF)

  18. Management Theories and Broadcasting: A Handbook.

    Science.gov (United States)

    Craig, J. Robert; Hindmarsh, Wayne A.

    Today's contemporary management and motivation theories, as applied to the business of broadcasting, are the focus of the first section of this paper. It deals with the kinds and reactions of employees in broadcasting stations in relation to 11 motivational theories: (1) Theories X and Y, (2) Immaturity-Maturity Theory, (3) V Theory, (4) Z Theory,…

  19. The Quasi Nongovernmental Organization in Public Broadcasting

    Science.gov (United States)

    Grossman, Michael B.

    1969-01-01

    "Educational broadcasting faces a problem of remaining autonomous under increased governmental support through the Corporation for Public Broadcasting. Dr. Grossman draws parallels between what is happening in ETV and the history of autonomy and constituency in the schools and universities. (Editor)

  20. 47 CFR 73.1217 - Broadcast hoaxes.

    Science.gov (United States)

    2010-10-01

    ... broadcast station shall broadcast false information concerning a crime or a catastrophe if: (a) The licensee... harm would occur. A “crime” is any act or omission that makes the offender subject to criminal punishment by law. A “catastrophe” is a disaster or imminent disaster involving violent or sudden...

  1. High-Performance Broadcasting Algorithms on Cluster

    Institute of Scientific and Technical Information of China (English)

    舒继武; 魏英霞; 王鼎兴

    2004-01-01

    In many clusters connected by high-speed communication networks, the exact structure of the underlying communication network and the latency difference between different sending and receiving pairs may be ignored when they broadcast, such as in the approach adopted by the broadcasting method in MPICH,a widely used MPI implementation. However, the underlying network cluster topologies are becoming more and more complicated and the performance of traditional broadcasting algorithms, such as MPICH's MPI_Bcast, is far from good. This paper analyzed the impact of communication latencies and the underlying topologies on the performance of broadcasting algorithms for multilevel clusters. A multilevel model was developed for broadcasting in clusters with complicated topologies, which divides the cluster topology into many levels based on the underlying topology. The multilevel model was used to develop a new broadcast algorithm,MLM broadcast-2 (MLMB-2), that adapts to a wide range of clusters. Comparison of the performance of the counterpart MPI operation MPI_Bcast and MLMB-2 shows that MLMB-2 outperforms MPl_Bcast by decreasing the broadcast running time by 60%-90%.

  2. One-Page Multimedia Interactive Map

    Directory of Open Access Journals (Sweden)

    Nicola Maiellaro

    2017-01-01

    Full Text Available The relevance of local knowledge in cultural heritage is by now acknowledged. It helps to determine many community-based projects by identifying the material to be digitally maintained in multimedia collections provided by communities of volunteers, rather than for-profit businesses or government entities. Considering that the search and browsing of texts, images, video, and 3D models related to places is more essential than using a simple text-based search, an interactive multimedia map was implemented in this study. The map, which is loaded on a single HyperText Markup Language (HTML page using AJAX (Asynchronous JavaScript and XML, with a client-side control mechanism utilising jQuery components that are both freely available and ad-hoc developed, is updated according to user interaction. To simplify the publication of geo-referenced information, the application stores all the data in a Geographic JavaScript Object Notation (GeoJSON file rather than in a database. The multimedia contents—associated with the selected Points of Interest (PoIs—can be selected through text search and list browsing as well as by viewing their previews one by one in a sequence all together in a scrolling window (respectively: “Table”, “Folder”, and “Tile” functions. PoIs—visualised on the map with multi-shape markers using a set of unambiguous colours—can be filtered through their categories and types, accessibility status and timeline, thus improving the system usability. The map functions are illustrated using data collected in a Comenius project. Notes on the application software and architecture are also presented in this paper.

  3. Moodle 2.5 multimedia

    CERN Document Server

    Fernandes, João

    2013-01-01

    A tutorial-based guide where readers can work through practical examples that clearly describe how to create multimedia applications using Moodle and integrate existing multimedia resources into Moodle courses.If you are a teacher or trainer who runs online courses and has a basic understanding of Moodle, this book will be ideal for you. It is not necessary to have an advanced technical background to create multimedia elements as the tasks will be simple, not time consuming, and will be practical for everyday use.

  4. Multimedia ontology representation and applications

    CERN Document Server

    Chaudhury, Santanu; Ghosh, Hiranmay

    2015-01-01

    The result of more than 15 years of collective research, Multimedia Ontology: Representation and Applications provides a theoretical foundation for understanding the nature of media data and the principles involved in its interpretation. The book presents a unified approach to recent advances in multimedia and explains how a multimedia ontology can fill the semantic gap between concepts and the media world. It relays real-life examples of implementations in different domains to illustrate how this gap can be filled.The book contains information that helps with building semantic, content-based

  5. Innovative multimedia for teaching nematology.

    Science.gov (United States)

    Eisenback, J D

    1993-09-01

    The availability of interactive multimedia authoring software programs promises to revolutionize the teaching of nematology. These programs integrate text, hypertext, graphics, animations, video, and sound. The user interacts with the information on demand in a nonlinear fashion. Beginning students can limit themselves to the general outlines of the subject, and advanced students can explore the information to the limits of their ability. Use of interactive multimedia does not eliminate the need for effective, enthusiastic teachers but provides a mechanism for the efficient transfer of information. An interactive multimedia presentation that supplements lectures in an introductory course is presented as an example of the application of this technology for teaching nematology.

  6. Safety message broadcast in vehicular networks

    CERN Document Server

    Bi, Yuanguo; Zhuang, Weihua; Zhao, Hai

    2017-01-01

    This book presents the current research on safety message dissemination in vehicular networks, covering medium access control and relay selection for multi-hop safety message broadcast. Along with an overall overview of the architecture, characteristics, and applications of vehicular networks, the authors discuss the challenging issues in the research on performance improvement for safety applications, and provide a comprehensive review of the research literature. A cross layer broadcast protocol is included to support efficient safety message broadcast by jointly considering geographical location, physical-layer channel condition, and moving velocity of vehicles in the highway scenario. To further support multi-hop safety message broadcast in a complex road layout, the authors propose an urban multi-hop broadcast protocol that utilizes a novel forwarding node selection scheme. Additionally, a busy tone based medium access control scheme is designed to provide strict priority to safety applications in vehicle...

  7. Broadcast Network Coverage with Multicell Cooperation

    Directory of Open Access Journals (Sweden)

    Hongxiang Li

    2010-01-01

    Full Text Available Multicell cooperation has been identified as one of the underlying principles for future wireless communication systems. This paper studies the benefits of multicell cooperation in broadcast TV network from an information theoretical perspective. We define outage capacity as the figure of merit and derive the broadcast coverage area to evaluate such system. Specifically, we calculate the broadcast coverage area with given common information rate and outage probabilities when multiple base stations collaboratively transmit the broadcast signals. For the general MIMO case where receivers have multiple antennas, we provide simulation results to illustrate the expanded coverage area. In all cases, our results show that the coverage of a TV broadcast network can be significantly improved by multicell cooperation.

  8. Independence between Korean Government and Broadcasting Industry

    Directory of Open Access Journals (Sweden)

    Yi-Chih Huang

    2015-01-01

    Full Text Available The recent success of Hallyu (Korean Wave first driven by the spread of TV dramas received academic attention for its effective national policies. However, little is known about how national policy is implemented and local industry capacity is maintained even after market opening. Therefore, the aim of this paper attempts to explore how and why state governs broadcasting industry effectively. Historical institutionalism has been used to explain the way that Korean governments had taken to collaborate with the broadcasting industry. The relation between governments and broadcasting industry, the changes of broadcasting policies and authorities responsible for regulating TV industry are involved. Results of this study showed that strong state intervention in Korea did lead to oligopoly, and the governments dominated the industry by designing the market structure. To conclude, this study may be of importance in explaining the governed independence between Korean governments and broadcasting industry, as well as how it contributed to the stable productivity and export competitiveness.

  9. Random broadcast on random geometric graphs

    Energy Technology Data Exchange (ETDEWEB)

    Bradonjic, Milan [Los Alamos National Laboratory; Elsasser, Robert [UNIV OF PADERBORN; Friedrich, Tobias [ICSI/BERKELEY; Sauerwald, Tomas [ICSI/BERKELEY

    2009-01-01

    In this work, we consider the random broadcast time on random geometric graphs (RGGs). The classic random broadcast model, also known as push algorithm, is defined as: starting with one informed node, in each succeeding round every informed node chooses one of its neighbors uniformly at random and informs it. We consider the random broadcast time on RGGs, when with high probability: (i) RGG is connected, (ii) when there exists the giant component in RGG. We show that the random broadcast time is bounded by {Omicron}({radical} n + diam(component)), where diam(component) is a diameter of the entire graph, or the giant component, for the regimes (i), or (ii), respectively. In other words, for both regimes, we derive the broadcast time to be {Theta}(diam(G)), which is asymptotically optimal.

  10. Multimedia Feedback Systems for Engineering

    Energy Technology Data Exchange (ETDEWEB)

    Gladwell, S.; Gottlieb, E.J.; McDonald, M.J.; Slutter, C.L.

    1998-12-15

    The World Wide Web has become a key tool for information sharing. Engineers and scientists are finding that the web is especially suited to publishing the graphical, multi-layered information that is typical of their work. Web pages are easier to distribute than hardcopy. Web movies have become more accessible, in many offices, than videos. Good VRML viewing software, bundled with most new PCs, has sufficient power to support many engineering needs. In addition to publishing information science and engineering has an important tradition of peer and customer review. Reports, drawings and graphs are typically printed, distributed, reviewed, marked up, and returned to the author. Adding review comments to paper is easy. When, however, the information is in electronic form, this ease of review goes away. It's hard to write on videos. It's even harder to write comments on animated 3D models. These feedback limitations reduce the value of the information overall. Fortunately, the web can also be a useful tool for collecting peer and customer review information. When properly formed, web reports, movies, and 3D animations can be readily linked to review notes. This paper describes three multimedia feed-back systems that Sandia National Laboratories has developed to tap that potential. Each system allows people to make context-sensitive comments about specific web content and electronically ties the comments back to the web content being referenced. The fuel system ties comments to specific web pages, the second system ties the comments to specific frames of digital movies, and the third ties the comments to specific times and viewpoints within 3D animations. In addition to the technologies, this paper describes how they are being used to support intelligent machine systems design at Sandia.

  11. Traditional protection ratios in FM sound broadcasting - still appropriate for interference management?

    Science.gov (United States)

    Philipp, J.

    2011-12-01

    A detailed analysis of the measurement procedures recommended by the International Telecommunication Union (ITU) shows that - with proper definition of audio quality - the FM broadcasting system can provide an audio signal-to-noise ratio of no better than 40 dB, when the interference in the neighboring channels exhausts the limits established by the internationally agreed protection ratios. Thus any attempt to relax the protection, be it motivated by the desire to implement additional FM or new digital services in the FM band, would inevitably degrade reception quality of existing services to levels hardly acceptable by broadcast listeners.

  12. The Olympic Games broadcasted as Interactive Television - New Media new Games?

    DEFF Research Database (Denmark)

    Bjørner, Thomas

    could change how the viewers watch the Olympic Games. New media initiatives will increase significantly, not only in the broadcast of television but also with broadband Internet coverage of the Olympic Games. In addition, mobile phone subscribers in some territories already have been able to watch live...... or delayed video coverage of the Olympic Games. The Torino Olympic Broadcasting was the first to be filmed entirely in High Definition Television. In the future the use of digital video processing, computer vision, 3D-visualisation and animation techniques allow viewers to watch sports events almost...

  13. IP Broadcasting Network Communications Security%浅谈 IP 广电网络的通信安全

    Institute of Scientific and Technical Information of China (English)

    吴永伟

    2015-01-01

    The IP digital broadcasting system is a fully digital audio-broadcasting system based on the IP net-works.Its physical structure completely syncretize with the IP networks,it breaks through the function limit of the traditional broadcasting.The IP digital broadcasting system has the security problems of communication,as it base on the IP networks.This paper discusses the security issues about the IP digital broadcasting system.%IP 数字广电网络是一套基于 IP 网络的纯数字化广播系统,基于 IP 网络的数字化广播、直播、点播,推送功能强大,灵活性强,并突破了传统模拟广播系统的局限性。但 IP 数字广电网络系统也继承了IP 网络安全的问题,主要分析 IP 广电网络所面对的安全问题,并提出解决方法。

  14. Multimedia services in intelligent environments recommendation services

    CERN Document Server

    Virvou, Maria; Jain, Lakhmi

    2013-01-01

    Multimedia services are now commonly used in various activities in the daily lives of humans. Related application areas include services that allow access to large depositories of information, digital libraries, e-learning and e-education, e-government and e-governance, e-commerce and e-auctions, e-entertainment, e-health and e-medicine, and e-legal services, as well as their mobile counterparts (i.e., m-services). Despite the tremendous growth of multimedia services over the recent years, there is an increasing demand for their further development. This demand is driven by the ever-increasing desire of society for easy accessibility to information in friendly, personalized and adaptive environments. In this book at hand, we examine recent Recommendation Services. Recommendation services appear in the mobile environment, medicine/biology, tourism, education, and so on. The book includes ten chapters, which present various recently developed recommendation services. This research book is directed to professors...

  15. Evaluation of video quality models for multimedia

    Science.gov (United States)

    Brunnström, Kjell; Hands, David; Speranza, Filippo; Webster, Arthur

    2008-02-01

    The Video Quality Experts Group (VQEG) is a group of experts from industry, academia, government and standards organizations working in the field of video quality assessment. Over the last 10 years, VQEG has focused its efforts on the evaluation of objective video quality metrics for digital video. Objective video metrics are mathematical models that predict the picture quality as perceived by an average observer. VQEG has completed validation tests for full reference objective metrics for the Standard Definition Television (SDTV) format. From this testing, two ITU Recommendations were produced. This standardization effort is of great relevance to the video industries because objective metrics can be used for quality control of the video at various stages of the delivery chain. Currently, VQEG is undertaking several projects in parallel. The most mature project is concerned with objective measurement of multimedia content. This project is probably the largest coordinated set of video quality testing ever embarked upon. The project will involve the collection of a very large database of subjective quality data. About 40 subjective assessment experiments and more than 160,000 opinion scores will be collected. These will be used to validate the proposed objective metrics. This paper describes the test plan for the project, its current status, and one of the multimedia subjective tests.

  16. Multimedia, visual computing, and the information superhighway

    Science.gov (United States)

    Kitson, Frederick L.

    1996-04-01

    The data types of graphics, images, audio and video or collectively multimedia are becoming standard components of most computer interfaces and applications. Medical imaging in particular will be able to exploit these capabilities in concert with the database engines or 'information furnaces' that will exist as part of the information superhighway. The ability to connect experts with patients electronically enables care delivery from remote diagnostics to remote surgery. Traditional visual computing tasks such as MRI, volume rendering, computer vision or image processing may also be available to more clinics and researchers as they become 'electronically local.' Video is the component of multimedia that provides the greatest sense of presence or visual realism yet has been the most difficult to offer digitally due to its high transmission, storage and computation requirements. Advanced 3D graphics have also been a scarce or at least expensive resource. This paper addresses some of the recent innovations in media processing and client/server technology that will facilitate PCs, workstations or even set-top/TV boxes to process both video and graphics in real-time.

  17. DEA Multimedia Drug Library: Marijuana

    Science.gov (United States)

    ... DEA Press Room » Multi-Media Library » Image Gallery » Marijuana MARIJUANA To Save Images: First click on the thumbnail ... Save in directory and then click Save. Indoor Marijuana Grow Indoor Marijuana Grow Loose Marijuana Marinol 10mg ...

  18. Multimedia-Video for Learning

    CERN Document Server

    Chua, Kah Hean; Wee, Loo Kang; Tan, Ching

    2015-01-01

    Multimedia engages an audience through a combination of text, audio, still images, animation, video, or interactivity-based content formats. Along this vein, free platforms have been seen to allow budding enthusiasts to create multimedia content. For example, Google sites (Wee, 2012b) offer creative opportunities in website development that enable text insertion, still image, video and animation embedding, along with audio and hyper-interactive links to simulations (Christian & Esquembre, 2012; Wee, 2013; Wee, Goh, & Chew, 2013; Wee, Goh, & Lim, 2013; Wee, Lee, Chew, Wong, & Tan, 2015). This chapter focuses on the video aspect of multimedia, which can be positioned as a component to any effective self-paced on-line lesson that would be available anytime, anywhere via computer or mobile devices. The multimedia video approach aims to help users overcome barriers in creating engaging, effective and meaningful content (Barron & Darling-Hammond, 2008) for teaching and learning in an online envi...

  19. Developer's handbook of interactive multimedia

    CERN Document Server

    Phillips, Robin

    2014-01-01

    New technology is being used more and more in education and providers have to be aware of what is on offer and how it can be used. This practical handbook demonstrates how interactive multimedia can be developed for educational application.

  20. Multimedia content analysis

    CERN Document Server

    Ohm, Jens

    2016-01-01

    This textbook covers the theoretical backgrounds and practical aspects of image, video and audio feature expression, e.g., color, texture, edge, shape, salient point and area, motion, 3D structure, audio/sound in time, frequency and cepstral domains, structure and melody. Up-to-date algorithms for estimation, search, classification and compact expression of feature data are described in detail. Concepts of signal decomposition (such as segmentation, source tracking and separation), as well as composition, mixing, effects, and rendering, are discussed. Numerous figures and examples help to illustrate the aspects covered. The book was developed on the basis of a graduate-level university course, and most chapters are supplemented by problem-solving exercises. The book is also a self-contained introduction both for researchers and developers of multimedia content analysis systems in industry. .

  1. Now Broadcasting in Planck Definition

    Energy Technology Data Exchange (ETDEWEB)

    Hogan, Craig [Fermilab

    2013-07-08

    If reality has finite information content, space has finite fidelity. The quantum wave function that encodes spatial relationships may be limited to information that can be transmitted in a "Planck broadcast", with a bandwidth given by the inverse of the Planck time, about $2\\times 10^{43}$ bits per second. Such a quantum system can resemble classical space-time on large scales, but locality emerges only gradually and imperfectly. Massive bodies are never perfectly at rest, but very slightly and slowly fluctuate in transverse position, with a spectrum of variation given by the Planck time. This distinctive new kind of noise associated with quantum geometry would not have been noticed up to now, but may be detectable in a new kind of experiment.

  2. Dynamic Broadcast Scheduling in DDBMS

    Directory of Open Access Journals (Sweden)

    Babu Santhalingam,

    2011-01-01

    Full Text Available This system will address the problem of online scheduling sequential data objects with the principle of periodicity in the context of dynamic information dissemination. Many modern information applications spread dynamically generated data objects and answer the complex query for retrieving multiple data objects. In dynamic environments, data streams need to be online processed rather than being stored and later retrieved to answer queries. Particularly, data objects are produced dynamically by the information providers, interleaved and disseminated efficiently by the broadcasting servers, and associated sequentially in the client sides. The proposed algorithm with a well-specific gain measure function prominently outperforms the FIFO schedule and is able to minimize the mean service access time to the extent close to the theoretical optimum.

  3. Multimedia Conferencing System and Multicasting

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    The multimedia conferencing system is an important tool for Computer-supported Cooperative Work (CSCW), and also one of the basic techniques supporting team work in the Concurrent Engineering. In this paper the architecture and function modules of the reported multimedia conferencing system are described. Then in order to reduce the network bandwidth required by the conferencing system, two methods for sending the conferencing data by using multicasting are discussed.

  4. New Review of Hypermedia and Multimedia (NRHM)

    DEFF Research Database (Denmark)

    to the area of mobile hypermedia. Here, though, the focus is primarily on multimedia and 3D graphics-based augmented reality for wearable computers. The paper presents an advanced authoring tool for augmented reality-based mobile hypermedia. The fouth paper, Augmented Reality as an Interface to Adaptive...... Hypermedia Systems by Patrick A. S. Sinclair, Kirk Martinez, David E. Millard, and Mark J. Weal, also deals with 3D graphics-based augmented reality, but here, Augmented Reality is used as an interaction and presentation technique for adaptive hypermedia. Different physical interaction metaphors...... recognition, having contributed substantially to the selection of papers and provision of feedback that helped refine and finalise the papers. This is the first issue published by Taylor & Francis. Starting with this issue. NRHM has a new look and will appear in both print and digital formats. The online NRHM...

  5. Posthumous Numerical Study of DTV Broadcast Antenna Integration with Prototype Stratospheric Airship Gondola

    Directory of Open Access Journals (Sweden)

    Ryu Miura

    2008-09-01

    Full Text Available As a follow-on to the 2002 digital television (DTV broadcast demonstration from a solar-powered stratospheric flying wing, a prototype stratospheric airship was used for a more realistic DTV broadcast demonstration in 2004, albeit at a lower altitude. The DTV signal was occasionally lost at the receiver directly below the airship during the demonstration. Adverse antenna-vehicle integration effects were investigated using a commercially available antenna simulation software, because the radiation pattern of the antenna on the airship could not be measured directly. The ground handling bars on the airship gondola were found to introduce deep and sharp nulls into the radiation pattern of the broadcast antenna. Some mitigation techniques that would have fitted within the constraints of the time are discussed. Changing to nonconductive ground handling bars and a multiturn helical antenna would have avoided the problem, according to the simulation results.

  6. Posthumous Numerical Study of DTV Broadcast Antenna Integration with Prototype Stratospheric Airship Gondola

    Directory of Open Access Journals (Sweden)

    Gray Derek

    2008-01-01

    Full Text Available Abstract As a follow-on to the 2002 digital television (DTV broadcast demonstration from a solar-powered stratospheric flying wing, a prototype stratospheric airship was used for a more realistic DTV broadcast demonstration in 2004, albeit at a lower altitude. The DTV signal was occasionally lost at the receiver directly below the airship during the demonstration. Adverse antenna-vehicle integration effects were investigated using a commercially available antenna simulation software, because the radiation pattern of the antenna on the airship could not be measured directly. The ground handling bars on the airship gondola were found to introduce deep and sharp nulls into the radiation pattern of the broadcast antenna. Some mitigation techniques that would have fitted within the constraints of the time are discussed. Changing to nonconductive ground handling bars and a multiturn helical antenna would have avoided the problem, according to the simulation results.

  7. Architecture of WiFi Based Broadcast Network for Rural Community

    Directory of Open Access Journals (Sweden)

    Jumshed Akhtar

    2016-04-01

    Full Text Available Digital divide is a reality in developing nations. Most of the technological advancements are available only in urban areas and rural community is still deprived of communication technology even in 21 st century. To ensure the availability of Internet, TV (Television and other high data-rate services to the rural community; use of high power ISM (Industrial, Scientific and Medical band broadcast should be of interest. The aim of this research work is to design a WiFi based broadcast network that provides broadband access to remote areas and to study the propagation characteristics of this network in a typical rural community in the plains of Pakistan. This paper uses extensive measurements in indoor and outdoor environments of village ?Lower Kot Ratta? to develop a WiFi broadband broadcast propagation model for rural areas of Pakistan. The proposed model is simple, flexible and more suitable for rural areas as compared to existing models

  8. 9th International Conference on Multimedia and Ubiquitous Engineering and the 10th International Conference on Future Information Technology

    CERN Document Server

    Chao, Han-Chieh; Arabnia, Hamid; Yen, Neil; Advanced Multimedia and Ubiquitous Engineering : Future Information Technology; MUE-15; FutureTech 2015

    This volume brings together contributions representing the state-of-the-art in new multimedia and future technology information research, currently a major topic in computer science and electronic engineering. Researchers aim to interoperate multimedia frameworks, transforming the way people work and  interact with multimedia data. This book covers future information technology topics including digital and multimedia convergence, ubiquitous and pervasive computing, intelligent computing and applications, embedded systems, mobile and wireless communications, bio-inspired computing, grid and cloud computing, semantic web, human-centric computing and social networks, adaptive and context-aware computing, security and trust computing and related areas.  Representing the combined proceedings of the 9th International Conference on Multimedia and Ubiquitous Engineering (MUE-15) and the 10th International Conference on Future Information Technology (FutureTech 2015), this book aims to provide a complete coverage of...

  9. Encryption for digital content

    CERN Document Server

    Kiayias, Aggelos

    2010-01-01

    Encryption for Digital Content is an area in cryptography that is widely used in commercial productions (e.g., Blu-Ray and HD-DVDs). This book provides a comprehensive mathematical treatment of combinatorial encryption techniques used in digital content distribution systems and related attack models. A complete description of broadcast encryption with various revocation and tracing functionalities is included. ""Encryption for Digital Content"" introduces the subset cover framework (currently used in AACS, Blu-Ray and HD-DVDs,) and tracking/revocation mechanisms in various attack models. Pirat

  10. Classical codes for quantum broadcast channels

    CERN Document Server

    Savov, Ivan

    2011-01-01

    We discuss two techniques for transmitting classical information over quantum broadcast channels. The first technique is a quantum generalization of the superposition coding scheme for the classical broadcast channel. We use a quantum simultaneous nonunique decoder and obtain a simpler proof of the rate region recently published by Yard et al. in independent work. Our second result is a quantum Marton coding scheme, which gives the best known achievable rate region for quantum broadcast channels. Both results exploit recent advances in quantum simultaneous decoding developed in the context of quantum interference channels.

  11. Emergency Broadcast System Based On GIS

    Science.gov (United States)

    Junfeng, Kang; Baoyu, Wang; Xueying, Jiang; Xiaosheng, Liu

    2017-02-01

    Nowadays, disaster occurs more and more frequently, which brings huge losses to the society. Presented a GIS based emergency broadcast system (GIS-EBS), to provide rapid, accurate information to the public, can reduce the people’s losses maximum. Different from the traditional radio data system (RDS), by adding broadcasting terminal control instruction on the FM signal, GIS-EBS extended the RDS protocol, which can control each radio terminal’s state. And through the extended RDS protocol, GIS-EBS can broadcast and release the emergency information to the right place and the people most in need in the shortest time.

  12. Multimedia forensics and security foundations, innovations, and applications

    CERN Document Server

    Fouad, Mohamed; Manaf, Azizah; Zamani, Mazdak; Ahmad, Rabiah; Kacprzyk, Janusz

    2017-01-01

    This book presents recent applications and approaches as well as challenges in digital forensic science. One of the evolving challenges that is covered in the book is the cloud forensic analysis which applies the digital forensic science over the cloud computing paradigm for conducting either live or static investigations within the cloud environment. The book also covers the theme of multimedia forensics and watermarking in the area of information security. That includes highlights on intelligence techniques designed for detecting significant changes in image and video sequences. Moreover, the theme proposes recent robust and computationally efficient digital watermarking techniques. The last part of the book provides several digital forensics related applications, including areas such as evidence acquisition enhancement, evidence evaluation, cryptography, and finally, live investigation through the importance of reconstructing the botnet attack scenario to show the malicious activities and files as evidence...

  13. 37 CFR 253.2 - Definition of public broadcasting entity.

    Science.gov (United States)

    2010-07-01

    ... broadcasting entity. 253.2 Section 253.2 Patents, Trademarks, and Copyrights COPYRIGHT OFFICE, LIBRARY OF... CONNECTION WITH NONCOMMERCIAL EDUCATIONAL BROADCASTING § 253.2 Definition of public broadcasting entity. As used in this part, the term public broadcasting entity means a noncommercial educational...

  14. 78 FR 78318 - Television Broadcasting Services; Oklahoma City, Oklahoma

    Science.gov (United States)

    2013-12-26

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Oklahoma City, Oklahoma AGENCY: Federal... filed by Family Broadcasting Group, Inc. (``Family Broadcasting''), the licensee of station KSBI(TV... voluntary relocation agreement with Lower 700 MHz A Block licensees. Family Broadcasting has entered...

  15. 75 FR 9859 - Television Broadcasting Services; Beaumont, TX

    Science.gov (United States)

    2010-03-04

    ... COMMISSION 47 CFR Part 73 Television Broadcasting Services; Beaumont, TX AGENCY: Federal Communications... Freedom Broadcasting of Texas (``Freedom Broadcasting''), the licensee of KFDM(TV), channel 21, Beaumont, Texas. Freedom Broadcasting requests ] the substitution of channel 25 for channel 21 at Beaumont....

  16. 47 CFR 73.597 - FM stereophonic sound broadcasting.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false FM stereophonic sound broadcasting. 73.597 Section 73.597 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES... broadcasting. A noncommercial educational FM broadcast station may, without specific authority from the...

  17. Construction of the Application Systems for Universal Education in Architectural Heritage – Multimedia Touch Screen Desk System

    Directory of Open Access Journals (Sweden)

    Sato Reika

    2016-01-01

    Full Text Available The importance of popular education in architectural heritage is well known. It is an effective method for public education to develop applications that utilize digital copy of architectural heritage. We provide a case study focusing on the historical buildings of Toji Temple in Kyoto, Japan. We digitize the historical buildings in both overall construction and detailed structures. We build a demonstration and operating system using multimedia technologies such as multimedia touch screen desk system. The system will produce 3D digital models of architectural heritage with high resolution and use advanced technology to develop a variety of demonstration applications that can enhance your presentation and ease operation. The users can also have more opportunities and ways to improve their interests in learning and understanding about the architectural heritage knowledge, hence finding new ways to further improve the methodology of architectural heritage education with the application of multimedia interactive technologies and digital copy of historical buildings.

  18. Raamovereenkomst digitale archiveringsdienst : Template Digital Archiving Services Agreement

    NARCIS (Netherlands)

    2016-01-01

    textabstractThis template for a Digital Archiving Services Agreement between NISV and non broadcast data producers (i.c. dataproducers from outside of the public broadcast environment ) contains all arrangements and services to be mutually agreed on, as to the data formats and metadata items to be i

  19. Intelligent interactive multimedia systems and services in practice

    CERN Document Server

    Virvou, Maria; Jain, Lakhmi; Howlett, Robert; Watanabe, Toyohide

    2015-01-01

    This research book presents some specific multimedia systems that have been developed and applied in practice. More specifically, it consists of an editorial, an introductory chapter and six chapters as below.   ·         Use of Multi-attribute Decision Making for Combining Audio-Lingual and Visual-Facial Modalities in Emotion Recognition. ·         Cooperative Learning assisted by Automatic Classification within Social Networking Services. ·         Improving Peer-to-Peer Communication in e-Learning by Development of an Advanced Messaging System. ·         Fuzzy-based Digital Video Stabilization in Static Scenes. ·         Development of Architecture, Information Archive and Multimedia Formats for Digital e-Libraries. ·         Layered Ontological Image for Intelligent Interaction to extend User Capabilities on Multimedia Systems in a Folksonomy Driven Environment.  

  20. Evolution of the NOAA National Weather Service Satellite Broadcast Network (SBN) to Europe's DVB-S satellite communications technology standard

    Science.gov (United States)

    Cragg, Phil; Brockman, William E.

    2006-08-01

    The National Oceanic and Atmospheric Administration's (NOAA) National Weather Service (NWS) uses a commercial Satellite Broadcast Network (SBN) to distribute weather data to the NWS AWIPS workstations and National Centers and to NWS Family of Service Users. Advances in science and technology from NOAA's observing systems, such as remote sensing satellites and NEXRAD radars, and advances in Numeric Weather Prediction have greatly increased the volume of data to be transmitted via the SBN. The NOAA-NWS SBN Evolution Program did a trade study resulting in the selection of Europe's DVB-S communication protocol as the basis for enabling a significant increase in the SBN capacity. The Digital Video Broadcast (DVB) group, started to develop digital TV for Europe through satellite broadcasting, has become the current standard for defining technology for satellite broadcasting of digital data for much of the world. NOAA-NWS implemented the DVB-S with inexpensive, Commercial Off The Shelf receiving equipment. The modernized NOAA-NWS SBN meets current performance goals and provides the basis for continued future expansion with no increase in current communication costs. This paper discusses aspects of the NOAA-NWS decision and the migration to the DVB-S standard for its commercial satellite broadcasts of observations and Numerical Weather Prediction data.

  1. History and Multimedia Technology. Media Corner.

    Science.gov (United States)

    Mitchell-Powell, Brenda, Ed.

    1994-01-01

    Contends that, although multimedia technology offers new options for history instruction, its value depends on the consistency, reliability, and convenience of operational methods. Provides reviews of three recommended and one not recommended multimedia packages. (CFR)

  2. History and Multimedia Technology. Media Corner.

    Science.gov (United States)

    Mitchell-Powell, Brenda, Ed.

    1994-01-01

    Contends that, although multimedia technology offers new options for history instruction, its value depends on the consistency, reliability, and convenience of operational methods. Provides reviews of three recommended and one not recommended multimedia packages. (CFR)

  3. Injection molded optical backplane for broadcast architecture

    Science.gov (United States)

    Rosenberg, Paul; Mathai, Sagi; Sorin, Wayne V.; McLaren, Moray; Straznicky, Joseph; Panotopoulos, Georgios; Warren, David; Morris, Terry; Tan, Michael R. T.

    2012-01-01

    A low cost, blind mate, injection molded optical backplane is presented. The optical backplane is comprised of 12 channel optical broadcast buses, operating at 10Gbps/channel with six blindmate optical output ports spaced 1U apart.

  4. On Neologism in Broadcast News Reporting

    Institute of Scientific and Technical Information of China (English)

    吕慧

    2014-01-01

    Based on the neologism in the broadcast news reporting, this paper will introduce different kinds of the most frequently used words today, including the extended meanings of the conventional words and new words created by word formation.

  5. 8 CFR 204.13 - How can the International Broadcasting Bureau of the United States Broadcasting Board of...

    Science.gov (United States)

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false How can the International Broadcasting Bureau of the United States Broadcasting Board of Governors petition for a fourth preference special... Broadcasting Bureau of the United States Broadcasting Board of Governors petition for a fourth...

  6. Optimal Broadcasting of Mixed Equatorial Qubits

    Institute of Scientific and Technical Information of China (English)

    YU Zong-Wen

    2009-01-01

    We derive an optimal 2→M phase-covariant quantum broadcasting of mixed equatorial qubits.This quantum broadcasting is optimal in the sense that the shrinking factor between the input and the output single qubit achieves the upper bound.The result shows that we can copy two identical mixed equatorial qubits with the same quality as those of two identical pure equatorial states.

  7. An SP-Hill layered broadcast cryptosystem

    Science.gov (United States)

    Spencer, M. E.; Tavares, S. E.

    A new type of cryptosystem with applications in broadcast communications and database systems is described. The scheme combines various elements of both SP-networks and Hill broadcast encryption systems. The theoretical basis for the encryption technique is described in a series of equations and the results of a preliminary production process complexity test are presented. The results of the test indicate that the scheme performs well cryptographically and that it represents a significant advance over conventional encryption systems.

  8. Dual-scale multimedia dynamic synchronization model

    Institute of Scientific and Technical Information of China (English)

    李乃祥

    2009-01-01

    Multimedia synchronization is the key technology in application of distributed multimedia.Solution of synchronization conflicts insides and among streams as well as that of user interaction,synchronization granularity refinement and synchronization precision improvement remain great challenges although great efforts have been invested by the academic circle.The construction method of a dual-scale dynamic synchronous model of multimedia presented in this article realizes multimedia synchronization on two sca...

  9. Multimedia database retrieval technology and applications

    CERN Document Server

    Muneesawang, Paisarn; Guan, Ling

    2014-01-01

    This book explores multimedia applications that emerged from computer vision and machine learning technologies. These state-of-the-art applications include MPEG-7, interactive multimedia retrieval, multimodal fusion, annotation, and database re-ranking. The application-oriented approach maximizes reader understanding of this complex field. Established researchers explain the latest developments in multimedia database technology and offer a glimpse of future technologies. The authors emphasize the crucial role of innovation, inspiring users to develop new applications in multimedia technologies

  10. Multimedia unplugged: a workshop on learning designs at the neoMuseum, Japan.

    Science.gov (United States)

    Ueda, N

    1999-01-01

    In Japan, we have a growing field called 'Information Education,' but people are paying too much attention to computers and the internet. That's why I am proposing unplugging the computer and thinking about the more essential aspects of learning and information design. 'Unplugged' means that technology and multimedia need not be limited to digital forms. Pencil-and-paper and traditional 'by hand' media also have important roles to play. In the Multimedia Unplugged workshop, participants use different forms of expression and media, including paper and styrofoam cubes, freeform construction kits and a wide variety of everyday objects, like bamboo leaves and post-it papers. Through this workshop, participants can understand that each medium has its own constraints and opportunities, and have a change to rethink the roles of multimedia from new perspectives. They can then replug and thus be able to choose appropriate media--digital or physical or both--to express their ideas.

  11. Photo-centric multimedia authoring enhanced by cross-media indexing

    Science.gov (United States)

    Luo, Jiebo; Loui, Alexander; Boutell, Matthew; Lei, Phoury

    2005-07-01

    With the increasing use of digital imaging in general consumer applications, there is a great deal of interest in developing new products that increase the value and enjoyment level of viewing digital images in consumers" living rooms. One way to enrich image viewing and sharing is to combine images with voice annotation and music. A picture VCD system (PVCD) was developed for multimedia authoring, centered around and driven by still photos, with an emphasis on composing still images with sound, including music and spoken annotations. We describe the overall system, as well as major enabling technology components, including multimedia authoring, semantic image classification, and cross-media indexing. The finished multimedia bit stream is primarily recorded on DVD or VCD to facilitate enriched enjoyment through a TV set, but can also be shared on a desktop/laptop, via email, or online.

  12. Dynamic multimedia annotation tool

    Science.gov (United States)

    Pfund, Thomas; Marchand-Maillet, Stephane

    2001-12-01

    Annotating image collections is crucial for different multimedia applications. Not only this provides an alternative access to visual information but it is a critical step to perform the evaluation of content-based image retrieval systems. Annotation is a tedious task so that there is a real need for developing tools that lighten the work of annotators. The tool should be flexible and offer customization so as to make the annotator the most comfortable. It should also automate the most tasks as possible. In this paper, we present a still image annotation tool that has been developed with the aim of being flexible and adaptive. The principle is to create a set of dynamic web pages that are an interface to a SQL database. The keyword set is fixed and every image receives from concurrent annotators a set of keywords along with time stamps and annotator Ids. Each annotator has the possibility of going back and forth within the collection and its previous annotations. He is helped by a number of search services and customization options. An administrative section allows the supervisor to control the parameter of the annotation, including the keyword set, given via an XML structure. The architecture of the tool is made flexible so as to accommodate further options through its development.

  13. Network Provisioning Using Multimedia Aggregates

    Directory of Open Access Journals (Sweden)

    Joan Vila-Carbó

    2008-01-01

    Full Text Available Multimedia traffic makes network provisioning a key issue. Optimal provisioning of network resources is crucial for reducing the service cost of multimedia transmission. Multimedia traffic requires not only provisioning bandwidth and buffer resources in the network but also guaranteeing a given maximum end-to-end delay. In this paper we present methods and tools for the optimal dimensioning of networks based on multimedia aggregates. The proposed method minimises the network resources reservations of traffic aggregates providing a bounded delay. The paper also introduces several methods to generate multimedia traffic aggregation using real video traces. The method is evaluated using a network topology based on the European GÉANT network. The results of these simulations allow us to discover the relationship between a required delay and the necessary bandwidth reservation (or the achievable utilisation limit. An interesting conclusion of these scenarios is that, following several recommendations, the network utilisation can reach values of around 80% or higher.

  14. 气象频道省级直播体系的构建与探讨%Construction of Weather Channel provincial system broadcast

    Institute of Scientific and Technical Information of China (English)

    孔毅民; 黄玉梅

    2011-01-01

    According to the current development of broadcasting technology, The ideas of weather channel provincial broadcast system About the design of studio broadcast system and the technology program of satellite digital broadcast vehicles were discussed to achieve weather channel local spots broadcast program normalization.%根据目前广电技术发展的方向,提出气象频道省级本地直播体系的建设思路,从演播室直播系统设计到卫星数字直播车的技术方案,逐步实现气象频道本地插播节目的直播常态化,提升省级气象部门的节目制作及气象应急服务能力。

  15. Towards Interactive, Intelligent, and Integrated Multimedia Analytics

    NARCIS (Netherlands)

    Zahálka, J.; Worring, M.; Chen, M.; Ebert, D.; North, C.

    2014-01-01

    The size and importance of visual multimedia collections grew rapidly over the last years, creating a need for sophisticated multimedia analytics systems enabling large-scale, interactive, and insightful analysis. These systems need to integrate the human's natural expertise in analyzing multimedia

  16. Standards of Multimedia Graphic Design in Education

    Science.gov (United States)

    Aldalalah, Osamah Ahmad; Ababneh, Ziad Waleed Mohamed

    2015-01-01

    This study aims to determine Standards of Multimedia Graphic Design in Education through the analysis of the theoretical basis and previous studies related to this subject. This study has identified the list of standards of Multimedia, Graphic Design, each of which has a set indicator through which the quality of Multimedia can be evaluated in…

  17. Multimedia Search Engines : Concept, Performance, and Types

    OpenAIRE

    Sayed Rabeh Sayed

    2005-01-01

    A Research about multimedia search engines, it starts with definition of search engines at general and multimedia search engines, then explains how they work, and divided them into: Video search engines, Images search engines, and Audio search engines. Finally, it reviews a samples to multimedia search engines.

  18. Security Management in a Multimedia System

    Science.gov (United States)

    Rednic, Emanuil; Toma, Andrei

    2009-01-01

    In database security, the issue of providing a level of security for multimedia information is getting more and more known. For the moment the security of multimedia information is done through the security of the database itself, in the same way, for all classic and multimedia records. So what is the reason for the creation of a security…

  19. Increasing Student Learning through Multimedia Projects.

    Science.gov (United States)

    Simkins, Michael; Cole, Karen; Tavalin, Fern; Means, Barbara

    This book discusses enhancing student achievement through project-based learning with multimedia. Chapter 1 describes project-based multimedia learning. Chapter 2 presents a multimedia primer, including the five basic types of media objects (i.e., images, text, sound, motion, and interactivity). Chapter 3 addresses making a real-world connection,…

  20. Multimedia Search Engines : Concept, Performance, and Types

    Directory of Open Access Journals (Sweden)

    Sayed Rabeh Sayed

    2005-12-01

    Full Text Available A Research about multimedia search engines, it starts with definition of search engines at general and multimedia search engines, then explains how they work, and divided them into: Video search engines, Images search engines, and Audio search engines. Finally, it reviews a samples to multimedia search engines.

  1. Say What? The Role of Audio in Multimedia Video

    Science.gov (United States)

    Linder, C. A.; Holmes, R. M.

    2011-12-01

    Audio, including interviews, ambient sounds, and music, is a critical-yet often overlooked-part of an effective multimedia video. In February 2010, Linder joined scientists working on the Global Rivers Observatory Project for two weeks of intensive fieldwork in the Congo River watershed. The team's goal was to learn more about how climate change and deforestation are impacting the river system and coastal ocean. Using stills and video shot with a lightweight digital SLR outfit and audio recorded with a pocket-sized sound recorder, Linder documented the trials and triumphs of working in the heart of Africa. Using excerpts from the six-minute Congo multimedia video, this presentation will illustrate how to record and edit an engaging audio track. Topics include interview technique, collecting ambient sounds, choosing and using music, and editing it all together to educate and entertain the viewer.

  2. Adjunctive numerical relation codes in multimedia signal covers

    Science.gov (United States)

    Collins, James C.; Agaian, Sos S.

    2013-05-01

    This paper introduces a new redundant number system, the adjunctive numerical relation (ANR) codes, which offer improvements over other well known systems such as the Fibonacci, Lucas, and the Prime number systems when used in multimedia data hiding applications. It will be shown that this new redundant number system has potential applications in digital communications, signal, and image processing. the paper will also offer two illustrative applications for this new redundant coding system. First an enhanced bit-plane decomposition of image formatted files with data embedding (steganography and watermarking). Secondly, an example of an expanded bit-line decomposition of audio formatted files with data embedding and index-based retrieval capability will be described. The computer simulations will detail the statistical stability required for effective data encoding techniques and demonstrate the improvements in the embedding capacity in multimedia carriers.

  3. S-DARS broadcast from inclined, elliptical orbits

    Science.gov (United States)

    Briskman, Robert D.; Prevaux, Robert J.

    2004-04-01

    The first Sirius spacecraft was launched on July 1, 2000. Exactly 5 months later, on December 1, the third spacecraft was launched, completing the three satellite S-DARS (Satellite Digital Audio Radio Service) constellation. The three satellites are deployed in inclined, elliptical, geosynchronous orbits, which allow seamless broadcast coverage to mobile users in the contiguous US. Terrestrial broadcast repeaters provide service in urban cores. The system is in operation, providing the first ever S-DARS service. The constellation design results in satellite ground tracks over North America with two satellites always above the equator. High elevation look angles from the mobile ground terminals to the satellites minimize performance degradation due to blockage, foliage attenuation and multi-path. The spacecraft were built by Space Systems/Loral using the 1300 bus modified for operation in high inclination orbits. Each spacecraft was launched using a dedicated Russian Proton booster. The satellite payload is a bent pipe repeater using 7.1 GHz for the uplink and 2.3 GHz for the broadcast transmission. The repeater high-power amplification stage consists of 32 Traveling Wave Tube Amplifiers phase combined to yield a total radio frequency output power of nearly 4 kW at saturated operation. The satellite antennas are mechanically steered to maintain the transmit beam centered on the Contiguous United States and the receive beam centered on the uplink earth station located in Vernon Valley, New Jersey. The satellite payload design and performance are described. The principal spacecraft bus systems are described with emphasis on improvements made for operation in the inclined, elliptical geosynchronous orbits.

  4. Pengembangan Media Pembelajaran Interaktif Berbasis Multimedia Mata Kuliah Dasar Listrik

    Directory of Open Access Journals (Sweden)

    Imam Mustholiq

    2016-05-01

    Full Text Available Tujuan penelitian ini antara lain (1 Mengembangkan media pembelajaran interaktif berbasis multimedia mata kuliah Dasar Listrik yang dalam kegiatannya mencakup analisis kebutuhan, desain, penerjemahan modul hasil desain ke dalam bentuk aplikasi, pengujian terhadap perangkat lunak yang dihasilkan, pengaplikasian produk kepada pengguna dan  perbaikan serta (2 Mendapatkan unjuk kerja hasil pengembangan media pembelajaran interaktif berbasis multimedia pada mata kuliah Dasar Listrik. Metode penelitian yang digunakan dalam penelitian ini adalah penelitian pengembanagn untuk mengembangkan media pembelajaran interaktif berbasis multimedia pada mata kuliah Dasar Listrik. Prosedur penelitian yang digunakan meliputi analisis kebutuhan, desain, penerjemahan modul hasil desain ke dalam bentuk aplikasi, pengujian terhadap perangkat lunak yang dihasilkan, pengaplikasian produk kepada pengguna dan  perbaikan. Pengujian terhadap unjuk kerja hasil pengembangan media pembelajaran interaktif berbasis multimedia mata kuliah Dasar Listrik dilakukan dengan memintakan penilaian unjuk kerja media pembelajaran tersebut kepada ahli materi, ahli media dan mahasiswa. Instrumen penelitian yang digunakan dalam penelitian ini antara lain komputer multimedia dengan perangkat pendukung antara lain kamera video, kamera digital, scanner, printer dan CD writer, perangklat lunak yang digunakan antara lain system operasi Microsoft Windows XP, pengolah gambar Adobe Photoshop 6.0, pengolah animasi Macromedia Flash 5.0, Freehand, pengolah suarat Cool Edit 2000, pengolah video Ulead Vidio Studio 7.0 daN pembuat program intearaktif Authoware. Disamping itu untuk memberikan penilaian terhadapunjuk kerja hasil media pembelajaran digunakan angket. Analisi data dilakukan secara deskriptif.Hasil penelitian menunjukan:  (a telah diperoleh hasil pengembanagn media pembelajaran interaktif berbasis multimedia pada mata kuliah dasar listrik , dengan prosedur pengembangan mencakup analisis

  5. Multimedia signal coding and transmission

    CERN Document Server

    Ohm, Jens-Rainer

    2015-01-01

    This textbook covers the theoretical background of one- and multidimensional signal processing, statistical analysis and modelling, coding and information theory with regard to the principles and design of image, video and audio compression systems. The theoretical concepts are augmented by practical examples of algorithms for multimedia signal coding technology, and related transmission aspects. On this basis, principles behind multimedia coding standards, including most recent developments like High Efficiency Video Coding, can be well understood. Furthermore, potential advances in future development are pointed out. Numerous figures and examples help to illustrate the concepts covered. The book was developed on the basis of a graduate-level university course, and most chapters are supplemented by exercises. The book is also a self-contained introduction both for researchers and developers of multimedia compression systems in industry.

  6. Making Meaning with Multimedia in Secondary English Language Arts: A Multiple Case Study

    Science.gov (United States)

    Mahoney, Kerrigan Rose

    2016-01-01

    The purpose of this multiple case study was to learn about how secondary English language arts (ELA) teachers help students to make meaning with multimedia. The study focused on how and why teachers plan and implement meaning-making learning experiences. The cases represent the experiences and perspectives of five ELA teachers who use digital and…

  7. Multimedia Integration for Language e-Learning: Content, Context and the e-Dossier

    Science.gov (United States)

    Sanchez-Villalon, Pedro Pablo; Ortega, Manuel; Sanchez-Villalon, Asuncion

    2010-01-01

    In the education world, it is widely accepted that language learning is one of the pioneering disciplines in the application and use of the information and communication technologies, initially preceded by the widespread use of audiovisual resources which, finally integrated in the digital space, bring about the use of multimedia. Additionally,…

  8. Empowering Teachers to Author Multimedia Learning Resources That Support Students' Critical Thinking

    Science.gov (United States)

    Holley, Debbie; Boyle, Tom

    2012-01-01

    Students studying Marketing, Fashion, Public Relations, Advertising and similar subjects need to develop a "critical eye" in relation to images, media and digital technologies. This project aims to empower teachers to develop multimedia learning resources that would support students engaging in this essential activity. Developing such…

  9. Evaluating Multimedia Library Materials: Clues from Hand-Printed Books and Art History.

    Science.gov (United States)

    Nicholls, Paul; Ridley, Jacquline

    1997-01-01

    Apart from archival print collections, digital multimedia materials will be the primary form of library resources in the future. Argues that all published materials, print or electronic, are subject to analytical and critical examination. Describes art historian Erwin Panofsky's "Circulus Methodicus," a method of iconological analysis, that could…

  10. Can broadcasting make a difference?

    Science.gov (United States)

    Lozare, B V

    1989-01-01

    Communication has untapped potential as a catalyst for community power in developing countries. Greater clarity is needed, however, on the channels of communication that will best integrate the contributions of diverse private and public agencies to meeting development needs. Also needed is a greater emphasis on strategic rather than technical aspects of communication. Most studies of communication have focused on the individual radio listener or television viewer, thereby ignoring the influence of broader forces. A concern for psychological determinants of decision making has led to a neglect of systemic factors. Another major error has been the failure to design longitudinal studies, or at least to collect information at 2 points in time. All of these observations point to a need to study power (economic, political, and social) as a crucial variable in understanding development. Moreover, there is a need for more attention to the role and impact of broadcasting on conflict management--an approach that requires abandoning traditional consensus models of communication. Yet another problem has been blind acceptance of the assumption that development communication and development support communication are unitary concepts that are universally applicable in all countries, all social and cultural contexts, and all development conditions. This unitary approach leads to the false conclusion that there is a grand model of development, and all communication personnel have to do is to see how radio and television fit into this conceptual framework. Finally, there has been a failure to appreciate fully the magnitude of poverty. If true development (defined as the capability of a people to go from where they are to where they want to be) is to occur, these strategic issues must be given serious attention.

  11. International Conference on Multimedia and Ubiquitous Engineering

    CERN Document Server

    Chen, Shu-Ching; Gil, Joon-Min; Yen, Neil; Multimedia and Ubiquitous Engineering

    2014-01-01

    The aims of these proceedings are to provide a complete coverage of the areas outlined, and to bring together researchers from academic and industry to share ideas, challenges, and solutions relating to the multifaceted aspects of this field. New multimedia standards (for example, MPEG-21) facilitate the seamless integration of multiple modalities into interoperable multimedia frameworks, transforming the way people work and interact with multimedia data. These key technologies and multimedia solutions interact and collaborate with each other in increasingly effective ways, contributing to the multimedia revolution and having a significant impact across a wide spectrum of consumer, business, healthcare, education, and governmental domains.

  12. ASIP Approach for Multimedia Applications Based on a Scalable VLIW DSP Architecture

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yanjun; HE Hu; SHEN Zheng; SUN Yihe

    2009-01-01

    The rapid development of multimedia techniques has increased the demands on multimedia processors.This paper presents a new design method to quickly design high performance processors for new multimedia applications.In this approach,a configurable processor based on the very long instruction-set word architecture is used as the basic core for designers to easily configure new processor cores for multimedia algorithm.Specific instructions designed for multimedia applications efficiently improve the performance of the target processor.Functions not implemented in the digital signal processor (DSP) core can be easily integrated into the target processor as user-defined hardware to increase the performance.Several examples are given based on the architecture.The results show that the processor performance is enhanced approximately 4 times on the H.263 codec and that the processor outperforms both DSPs and single instruction multiple data (SIMD) multimedia extension architectures by up to 8 times when computing the 2-D-IDCT.

  13. Exploiting Multimedia in Creating and Analysing Multimedia Web Archives

    Directory of Open Access Journals (Sweden)

    Jonathon S. Hare

    2014-04-01

    Full Text Available The data contained on the web and the social web are inherently multimedia and consist of a mixture of textual, visual and audio modalities. Community memories embodied on the web and social web contain a rich mixture of data from these modalities. In many ways, the web is the greatest resource ever created by human-kind. However, due to the dynamic and distributed nature of the web, its content changes, appears and disappears on a daily basis. Web archiving provides a way of capturing snapshots of (parts of the web for preservation and future analysis. This paper provides an overview of techniques we have developed within the context of the EU funded ARCOMEM (ARchiving COmmunity MEMories project to allow multimedia web content to be leveraged during the archival process and for post-archival analysis. Through a set of use cases, we explore several practical applications of multimedia analytics within the realm of web archiving, web archive analysis and multimedia data on the web in general.

  14. Digital services using quadrature amplitude modulation (QAM) over CATV analog DWDM system

    Science.gov (United States)

    Yeh, JengRong; Selker, Mark D.; Trail, J.; Piehler, David; Levi, Israel

    2000-04-01

    Dense Wavelength Division Multiplexing (DWDM) has recently gained great popularity as it provides a cost effective way to increase the transmission capacity of the existing fiber cable plant. For a long time, Dense WDM was exclusively used for baseband digital applications, predominantly in terrestrial long haul networks and in some cases in metropolitan and enterprise networks. Recently, the performance of DWDM components and frequency-stabilized lasers has substantially improved while the costs have down significantly. This makes a variety of new optical network architectures economically viable. The first commercial 8- wavelength DWDM system designed for Hybrid Fiber Coax networks was reported in 1998. This type of DWDM system utilizes Sub-Carrier Multiplexing (SCM) of Quadrature Amplitude Modulated (QAM) signals to transport IP data digital video broadcast and Video on Demand on ITU grid lightwave carriers. The ability of DWDM to provide scalable transmission capacity in the optical layer with SCM granularity is now considered by many to be the most promising technology for future transport and distribution of broadband multimedia services.

  15. Optimizing T-Learning Course Scheduling Based on Genetic Algorithm in Benefit-Oriented Data Broadcast Environments

    Science.gov (United States)

    Huang, Yong-Ming; Chen, Chao-Chun; Wang, Ding-Chau

    2012-01-01

    Ubiquitous learning receives much attention in these few years due to its wide spectrum of applications, such as the T-learning application. The learner can use mobile devices to watch the digital TV based course content, and thus, the T-learning provides the ubiquitous learning environment. However, in real-world data broadcast environments, the…

  16. AUDIOVISUAL: DO BROADCAST À BROADBAND

    OpenAIRE

    Kowalski, Marcio Antonio

    2015-01-01

    A sociedade digital nos abraça em todos os aspectos do cotidiano e uma parte significativa da população vive conectada em multiplataformas. Com a instantaneidade dos fluxos de comunicação, vivemos uma rotina onde muitos acessos estão a um clique ou toque. A televisão como mídia preponderante durante várias décadas, na sua transição digital comporta uma função além da TV que conhecíamos, como display interativo que se conecta e absorve conteúdos provenientes de várias fontes. Os consagrados ...

  17. Pemanfaatan Multimedia sebagai Media Penyuluhan Kesehatan Gigi

    Directory of Open Access Journals (Sweden)

    Hestieyonini Hadnyawati

    2015-10-01

    Full Text Available The effort of suppression promotion and preventive as practice principles of "paradigma sehat" are concept which announcement by Departemen Kesehatan Republik Indonesia in framework reach Indonesia Sehat 2010. This effort as well as possible to get done by everyone Indonesia peoples, with the holistic through way dental education. For this application dental education needed medium. Multimedia are application various medium which different for associate and serve information in form text, audio, chart, animation, and video. Multimedia find occupy somebody for keep 90% what he read, hear, se, mention and done. Using multimedia as dental education medium can be used CD/VCD multimedia module, multimedia presentation, and multimedia web. With this reminder, so using multimedia technology find service as alternative medium for public dental education.

  18. Distributed reservation control protocols for random access broadcasting channels

    Science.gov (United States)

    Greene, E. P.; Ephremides, A.

    1981-05-01

    Attention is given to a communication network consisting of an arbitrary number of nodes which can communicate with each other via a time-division multiple access (TDMA) broadcast channel. The reported investigation is concerned with the development of efficient distributed multiple access protocols for traffic consisting primarily of single packet messages in a datagram mode of operation. The motivation for the design of the protocols came from the consideration of efficient multiple access utilization of moderate to high bandwidth (4-40 Mbit/s capacity) communication satellite channels used for the transmission of short (1000-10,000 bits) fixed length packets. Under these circumstances, the ratio of roundtrip propagation time to packet transmission time is between 100 to 10,000. It is shown how a TDMA channel can be adaptively shared by datagram traffic and constant bandwidth users such as in digital voice applications. The distributed reservation control protocols described are a hybrid between contention and reservation protocols.

  19. Broadcast design in cognitive radio ad hoc networks

    CERN Document Server

    Song, Yi

    2014-01-01

    This SpringerBrief investigates the special challenges of broadcast design in cognitive radio (CR) ad hoc networks. It introduces two broadcast protocols in CR ad hoc networks: a quality-of-service based broadcast protocol under blind information and a fully-distributed broadcast protocol with collision avoidance. A novel unified analytical model is also presented to analyze the performance of the broadcast protocols. This is the first book dedicated to the unique broadcast design challenges in CR ad hoc networks. The authors also discuss the recent research on the performance analysis of broa

  20. 47 CFR 73.6017 - Digital Class A TV station protection of Class A TV and digital Class A TV stations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Digital Class A TV station protection of Class A TV and digital Class A TV stations. 73.6017 Section 73.6017 Telecommunication FEDERAL... Broadcast Stations § 73.6017 Digital Class A TV station protection of Class A TV and digital Class A...

  1. Hypervideos and interactive multimedia presentations

    NARCIS (Netherlands)

    B. Meixner (Britta)

    2017-01-01

    textabstractHypervideos and interactive multimedia presentations allow the creation of fully interactive and enriched video. It is possible to organize video scenes in a nonlinear way. Additional information can be added to the video ranging from short descriptions to images and more videos.

  2. Emotional Design in Multimedia Learning

    Science.gov (United States)

    Um, Eunjoon; Plass, Jan L.; Hayward, Elizabeth O.; Homer, Bruce D.

    2012-01-01

    Can multimedia learning environments be designed to foster positive emotions that will improve learning and related affective outcomes? College students (N = 118) were randomly assigned to 4 conditions created by 2 factors related to learners' emotion: "external mood induction" (positive vs. neutral emotions) and "emotional design induction"…

  3. A Bluffer's Guide to Multimedia.

    Science.gov (United States)

    Zemke, Ron; Armstrong, Judy

    1996-01-01

    Suggests that it is impossible to keep up with the explosion of information about multimedia training. Looks at the history of computers in education, offers a list of experts in the computer industry, and gives information that will increase trainers' familiarity with hardware and software terminology. (JOW)

  4. Trilogy; An Experiment in Multimedia.

    Science.gov (United States)

    Capote, Truman; And Others

    In a "multimedia experiment," director Frank Perry and author Eleanor Perry, adapted three of Truman Capote's short stories for television. The television plays, "A Christmas Memory,""Miriam," and "Among the Paths to Eden," were later reedited and presented in movie theaters under the title "Trilogy." This volume includes the short stories, the…

  5. Learning Words through Multimedia Application

    DEFF Research Database (Denmark)

    Zhang, Chun

    2007-01-01

      This study explores the relevance of multimedia application in relation to vocabulary acquisition in the classroom of Chinese as a foreign language. The herein depicted application refers to the computer-assisted implicit word-learning, wherein the Danish students built hypertexts to acquire...

  6. Learning Words through Multimedia Application

    DEFF Research Database (Denmark)

    Zhang, Chun

    2007-01-01

      This study explores the relevance of multimedia application in relation to vocabulary acquisition in the classroom of Chinese as a foreign language. The herein depicted application refers to the computer-assisted implicit word-learning, wherein the Danish students built hypertexts to acquire...

  7. Emotional Design in Multimedia Learning

    Science.gov (United States)

    Um, Eunjoon; Plass, Jan L.; Hayward, Elizabeth O.; Homer, Bruce D.

    2012-01-01

    Can multimedia learning environments be designed to foster positive emotions that will improve learning and related affective outcomes? College students (N = 118) were randomly assigned to 4 conditions created by 2 factors related to learners' emotion: "external mood induction" (positive vs. neutral emotions) and "emotional design induction"…

  8. 多媒体开采初探%Multimedia Mining

    Institute of Scientific and Technical Information of China (English)

    陈剑赟; 老松扬; 吴玲达

    2003-01-01

    This paper is a primary study of multimedia mining. It first explains the basic concepts of multimedia min-ing and classifies multimedia mining. Then it outlines two kinds of frameworks of multimedia mining function-drivenone and information-driven one. At last it introduces the process and methods of multimedia mining.

  9. 76 FR 62642 - Digital Broadcast Television Redistribution Control; Corrections

    Science.gov (United States)

    2011-10-11

    ... approved for Sec. 73.682. (ii) A/53, Part 2:2007, ``RF/Transmission System Characteristics'' (January 3...) OET Bulletin No. 69: ``Longley-Rice Methodology for Evaluating TV Coverage and Interference...

  10. Telecommunications: Additional Federal Efforts Could Help Advance Digital Television Transition

    Science.gov (United States)

    2002-11-01

    The transition to broadcast digital television(DTV) will provide new television services and the improved picture quality of 'high definition television'. It will also allow some portions of the radiofrequency spectrum used for broadcasting to be returned for public safety and commercial uses. The Congress set December 2006 as the target date for completing the DTV transition and turning the analog broadcast signals. However, this date can be extended if fewer than 85 percent of households in a market are able to receive the digital signals. GAO (General Accounting Office) was asked to assess issues related to the DTV transition.

  11. Broadcasting a message in a parallel computer

    Science.gov (United States)

    Berg, Jeremy E [Rochester, MN; Faraj, Ahmad A [Rochester, MN

    2011-08-02

    Methods, systems, and products are disclosed for broadcasting a message in a parallel computer. The parallel computer includes a plurality of compute nodes connected together using a data communications network. The data communications network optimized for point to point data communications and is characterized by at least two dimensions. The compute nodes are organized into at least one operational group of compute nodes for collective parallel operations of the parallel computer. One compute node of the operational group assigned to be a logical root. Broadcasting a message in a parallel computer includes: establishing a Hamiltonian path along all of the compute nodes in at least one plane of the data communications network and in the operational group; and broadcasting, by the logical root to the remaining compute nodes, the logical root's message along the established Hamiltonian path.

  12. Dynamic Index Coding for Wireless Broadcast Networks

    CERN Document Server

    Neely, Michael J; Zhang, Zhen

    2011-01-01

    We consider a wireless broadcast station that transmits packets to multiple users. The packet requests for each user may overlap, and some users may already have certain packets. This presents a problem of broadcasting in the presence of side information, and is a generalization of the well known (and unsolved) index coding problem of information theory. Rather than achieving the full capacity region, we develop a code-constrained capacity region, which restricts attention to a pre-specified set of coding actions. We develop a dynamic max-weight algorithm that allows for random packet arrivals and supports any traffic inside the code-constrained capacity region. Further, we provide a simple set of codes based on cycles in the underlying demand graph. We show these codes are optimal for a class of broadcast relay problems.

  13. Private TV and Radio Broadcasting in Azerbaijan

    Directory of Open Access Journals (Sweden)

    Vefalı ENSEROV

    2013-02-01

    Full Text Available The change of mass media and its innovation like the other areas were inevitable in post-soviet countries after the collapse of the Soviet Union. In this means, media area of Azerbaijan began to privatization process after independence and since mid 1990`s private radio and television channels began to broadcast in the country one by one that uni-centrally, officially and ideologically was directed by Moscow before. Progress which is related to privatization process of broadcasting in Azerbaijan is being handled in this study. This study also includes legal regulations in the mass media area and mechanism of auto-control. The activities of national private broadcasting companies are also scrutinized in the study as well as the condition of the communication freedom.

  14. Research on group enterprise multimedia information publishing system

    Directory of Open Access Journals (Sweden)

    Zhimin Dong

    2017-01-01

    Full Text Available A electric power group enterprises to actively explore the innovation of enterprise culture management, making full use of modern information and communication technologies, construction of trans-regional multimedia information publishing platform. Construction of a municipal pilot units in Group region, for example, through consolidation, Office LANs, corporate networks in electric power communication network, cable TV network, realized with pictures, video, PPT, FLASH animations, WORD documents, WEB pages, video conference streams, radio, television, and other media as the carrier’s digital communications.

  15. Satellite broadcasting - The European experience and perspective

    Science.gov (United States)

    Watson, Alan

    1991-11-01

    The use of satellites is considered as a means for developing a European transnational broadcasting system with attention given to the control of technology. A tension is described between maintaining technology as the property of one nation when the DBSs are developed for multinational program broadcasting. The simultaneous development of satellite systems is theorized to lead eventually to a single merged program for a particular nation, and the effect is considered of the regulation of cross-holding and cross-selling systems by investors.

  16. Optimization Digital Image Watermarking Technique for Patent Protection

    CERN Document Server

    Elnajjar, Mahmoud; Zaidan, B B; Sharif, Mohamed Elhadi M; Alanazi, Hamdan O

    2010-01-01

    The rapid development of multimedia and internet allows for wide distribution of digital media data. It becomes much easier to edit, modify and duplicate digital information besides that, digital documents are also easy to copy and distribute, therefore it will be faced by many threats. It is a big security and privacy issue. Another problem with digital document and video is that undetectable modifications can be made with very simple and widely available equipment, which put the digital material for evidential purposes under question With the large flood of information and the development of the digital format, it become necessary to find appropriate protection because of the significance, accuracy and sensitivity of the information, therefore multimedia technology and popularity of internet communications they have great interest in using digital watermarks for the purpose of copy protection and content authentication. Digital watermarking is a technique used to embed a known piece of digital data within a...

  17. Multimedia services in intelligent environments advances in recommender systems

    CERN Document Server

    Virvou, Maria; Jain, Lakhmi

    2013-01-01

    Multimedia services are now commonly used in various activities in the daily lives of humans. Related application areas include services that allow access to large depositories of information, digital libraries, e-learning and e-education, e-government and e-governance, e-commerce and e-auctions, e-entertainment, e-health and e-medicine, and e-legal services, as well as their mobile counterparts (i.e., m-services). Despite the tremendous growth of multimedia services over the recent years, there is an increasing demand for their further development. This demand is driven by the ever-increasing desire of society for easy accessibility to information in friendly, personalized and adaptive environments. In this book at hand, we examine recent Advances in Recommender Systems. Recommender systems are crucial in multimedia services, as they aim at protecting the service users from information overload. The book includes nine chapters, which present various recent research results in recommender systems. This resear...

  18. Exploiting multimedia in reproductive science education: research findings.

    Science.gov (United States)

    Senger, P L; Oki, A C; Trevisan, M S; McLean, D J

    2012-08-01

    Education in reproductive science is operating from an outdated paradigm of teaching and learning. Traditionally, reproductive education follows the pattern where students read a textbook, listen to instructor presentations, re-read the textbook and class notes and then complete a test. This paradigm is inefficient, costly and has not incorporated the potential that technology can offer with respect to increases in student learning. Further, teachers of reproductive science (and all of science for that matter) have little training in the use of documented methods of instructional design and cognitive psychology. Thus, most of us have learned to teach by repeating the approaches our mentors used (both good and bad). The technology now exists to explain complex topics using multimedia presentations in which digital animation and three-dimensional anatomical reconstructions greatly reduce time required for delivery while at the same time improving student understanding. With funding from the Small Business Innovation Research program through the U.S. Department of Education, we have developed and tested a multimedia approach to teaching complex concepts in reproductive physiology. The results of five separate experiments involving 1058 university students and 122 patients in an OB/GYN clinic indicate that students and patients learned as much or more in less time when viewing the multimedia presentations when compared to traditional teaching methodologies.

  19. Fostering Digital Literacy through Web-Based Collaborative Inquiry Learning--A Case Study

    Science.gov (United States)

    Jun, Fu; Pow, Jacky

    2011-01-01

    Digital literacy (DL), a term that emerged with the explosion of digital information and multimedia technology, refers to basic competence in using digital technology. The present study first analyzed the evolvement from media literacy to digital literacy and developed a four-branch theoretical framework of DL by investigating related definitions…

  20. Trends in Daily Newspaper and Broadcast Ownership, 1922-1970

    Science.gov (United States)

    Sterling, Christopher H.

    1975-01-01

    Seeks to answer the question of how much media control has been concentrated in the top 100 markets over the past half century, examining the trends in broadcasting and cross-media (newspaper-broadcasting) ownership within those markets. (RB)