Interactivity Channel
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Serviços públicos em aplicação interativa para TV digital : viabilizando o canal da cidadania / Public services in interactive digital TV : channel enabling citizenship
Os serviços públicos são atividades importantes que visam estabelecer os direitos e deveres dos cidadãos brasileiros para exercerem assim o papel essencial da cidadania. É através deles que a população tem contato direto com seus representantes nos poderes governamentais e representam também a forma principal de expressar suas reais necessidades. A
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2011
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2. Análise de tecnologias 3G visando à estruturação do canal de retorno da TV digital / Analysis of 3G technologies for structuration of digital television s return channel
Este trabalho trata da análise das tecnologias de terceira geração (3G) emergentes no mercado, visando uma futura estruturação do canal de retorno da TV digital brasileira recentemente implantada no país. As tecnologias trabalhadas foram o UMTS (Universal Mobile Telecommunications Systems), o WCDMA (Wide Code Division Mobile Access) e o HSDPA (High Spe
Publicado em: 2011
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3. Uma avaliação dos mecanismos de trasmissão de tráfego para IPTV
The IPTV service offer is currently the main interest of many ISPs (Internet Service Providers). Such service comprises the continuous transmission, via an IP network, of TV programs structured into channels, like the open TV ou cable TV services. The goal is to reach the same quality of conventional TV (full screen, medium or high definition), adding the in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/06/2009
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4. Segurança para o sistema brasileiro de televisão digital: contribuições à proteção de direitos autorais e à autenticação de aplicativos. / Security on brazilian digital television system: contributions to the digital rights protection and to applications authentication.
In Brazil, the television system is considered an important source of communication and entertainment. The Brazilian digital transmissions started on December 2007 and first offered functionalities were the high definition, mobility and portability. In a later moment other functionalities will be added: multiprogramming (more than one service per channel) an
Publicado em: 2009
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5. A modular platform for tests with interactivity in the Brazilian digital TV. / Uma plataforma modular para testes com interatividade na TV digital brasileira.
We have watched the transition from analog TV to digital TV around the world in the last two decades, with the establishment of international systems, as ATSC, DVB and ISDB. At the end of 2007, the Brazilian Digital Television System (SBTVD) was released for commercial purposes in São Paulo City. SBTVD brings significant innovations, from which we emphasize
Publicado em: 2008
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6. A wireless communication interface based on software defined radio in digital TV. / Uma interface de comunicação sem fio em TV digital baseada em rádio definido por programa de computador.
The sprouting of the modern communication technologies and multimedia information comes impacting and transforming the life of the current society, modifying habits and customs of its users. The visualization of these effects has not been different in the universe of the Digital TV. Its innovative proposal of interactivity between the user and the broadcaste
Publicado em: 2007
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7. ROTEAMENTO BASEADO EM LOCALIZAÇÃO EM REDES AD HOC / LOCATION BASED ROUTING IN AD-HOC NETWORKS
An important advance generated by the technology of digital TV is the possibility of interactivity with the users, what is done by means of the return channel. The mobile ad hoc networks have a great potential to provide this type of service, because it can ideally be used in diverse geographic areas and independent of any infrastructure. This minimizes the
Publicado em: 2007
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8. Websites de museus de arte: uma abordagem da gestão cultural
The Internet has been growing in importance both to individuals and to organizations. For the companies, a website on the Internet represents a possibility of new business, and for the not-forprofit organizations it represents greater amplitude to its social actions. The cultural sector, that normally is also not-for-profit, is using this channel to services
Publicado em: 2007
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9. Um middleware para construÃÃo de aplicaÃÃes de TV Digital distribuÃdas baseadas no Modelo P2P
Interactive Digital Television comes with a lot of changes which are much more than video and audio quality enhancements. It increases diversity and improves availability of multimedia content and turns spectators into multimedia application users. These applications will come with multimedia content and will give to the users the opportunity to actively int
Publicado em: 2006
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10. Códigos de Bloco com Decodificação Turbo Adaptados às Especificações do Padrão DVB-RCT / Códigos de Bloco com Decodificação Turbo Adaptados às Especificações do Padrão DVB-RCT
Product codes formed by serial concatenation of single parity check component codes are used in this thesis to fulfill the requirements of coding rate and block length expressed by the standard known as DVB-RCT (Digital Video Broadcasting - Return Channel Terrestrial). This standard describes the parameters of the physical layer for a digital TV wireless ret
Publicado em: 2004