Digital Terrestrial Television
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Desenvolvimento de um decodificador de áudio embarcado para o ISDB-Tb / Development of an embedded audio decoder for ISDB-Tb
Este trabalho descreve o desenvolvimento de um decodificador de áudio embarcado em um Digital Signal Processor (DSP)de acordo com o padrão High Efficiency AAC version 2(HE-AAC v2) do MPEG-4. Essa atividade é parte integrante do projeto Rede H.264 que tem por objetivo o desenvolvimento de tecnologias nacionais para ser integrado ao padrão brasileiro de TV
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2011
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2. Transmissão MPE no sistema de televisão digital ISDB-T
The purpose of this work is the development of a transmission platform with a graphical interface and software, using a TV channel of Brazilian Digital Television Standard (SBTVD) to transmit encapsulated data, audio and video. Initially is presented the SBTVD, with major highlight for multiplexing, given its importance in identifying and decoding the receiv
Publicado em: 2010
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3. TV digital interativa brasileira: Um estudo sobre as possibilidades da narrativa na TV digital interativa brasileira: considerando o SBTVD-T (Sistema Brasileiro de TV Digital Terrestre)
This research relates the concept of Interactive Digital TV, in its aspects technicalcomputing, linking them with new forms of expression of content in order to allow the production of new genres, sub-genres of narrative in television products. It shows that television, from computational systems, becomes from a connected device to a transmission system in a
Publicado em: 2010
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4. SUPPORTING THREE-DIMENSIONAL MEDIA OBJECT CONTROL AND PRESENTATION IN NCL / SUPORTE AO CONTROLE E À APRESENTAÇÃO DE OBJETOS DE MÍDIA TRIDIMENSIONAIS EM NCL
The world where we live in is physically formed by a three-dimensional space and it is natural human being wants to represent it as faithful as possible. In Web for example there are a lot of efforts in order to support the creation of interactive 3D applications, most of them based on scene graphs and route graphs. Scene graphs have become a standard for mo
Publicado em: 2010
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5. A tecnologia OFDMA e sua aplicação no canal de interatividade intrabanda de sistemas de televisão digital terrestre / The OFDMA technology and its application to the intraband interaction channel of terrestrial digital television
A demanda por sistemas de acesso em banda larga sem fio tem levando à busca de soluções tecnológicas que propiciem alto desempenho, expresso não apenas em termos do número de usuários atendidos mas também da qualidade de serviço e de experiência oferecidos. Devido à escassez de recursos do espectro eletromagnético, essas tecnologias devem permiti
Publicado em: 2009
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6. Using eye tracking to evaluate the user experience upon interactive television applications. / Uso de rastreamento do olhar na avaliação da experiência do tele-usuário de aplicações de TV interativa.
The introduction of digital terrestrial TV in Brazil allows users of free TV, the main source of information and entertainment in the country, to have access to services offered by Interactive TV (TVi). These users, who constitute a large and heterogeneous population, composed of individuals of varying degrees of education, age and knowledge of computers, wi
Publicado em: 2009
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7. Microrregional single frequency network / Redes de freqüência única microrregionais
In broad terms, this work suggests a new premise for the planning of channels of digital TV that focuses on optimizing spectrum. It made a contextualization on the decrees, laws and regulations concerning the Digital TV in Brazil. It presents the most relevant technical aspects of the Brazilian System of Digital Terrestrial Television (SBTVD-T), particularly
Publicado em: 2008
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8. O Espaço público na TV digital de alta definição : o espaço público no contexto dos conceitos de regulação e separação de poderes - relações teóricas frente à discussão brasileira referente à digitalização da radiodifusão (TV Digital) e o respeito aos princípios de um processo regulatório
The research context is the risk and media centered society, where information redefines power structures, and the democratic rule of law paradigm, based on Jürgen Habermastheory, in which rules addressees are also rules authors. The discourse paradigm sees the democratic rule of law as the normative justificational discourses, derived from the communicativ
Publicado em: 2008
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9. Arquimedia: uma proposta de arquitetura de software para terminais de acesso à TV digital interativa. / Arquimedia: a set-top-box software architecture proposal to interactive digital TV.
The terrestrial digital television systems have been established and expanded by the worldwide. It is expected that 1.4 billion analog TV sets will be replaced by set-topboxes and digital receivers TV sets, also known as access terminals. This fact shows the relevance of these devices that receive and decode the digital signals. Given the diversity of the ha
Publicado em: 2008
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10. Analise do processo de transferencia internacional de tecnologia na TV digital terrestre brasileira / Analysis of international trnafer of technology process at Brazilian terrestrial digital TV
A essência deste estudo consiste em explorar a capacidade de negociação do Brasil na aquisição de um sistema tecnológico complexo como é a TV digital terrestre, analisando o processo de transferência internacional de tecnologia (TIT) e os custos envolvidos na escolha de um dos sistemas. Hoje se vê que pouca atenção se deu à questão da TIT na TV
Publicado em: 2008
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11. Return channel for the Brazilian digital television system-terrestrial
Recently, it has been proposed the use of WiMAX for the return channel in digital television systems using a new frequency profile bellow 1 GHz, which has been calledWiMAX-700. The profile operates from 400 MHz to 960 MHz as primary band, which includes the UHF band, and optionally from 54 MHz to 400 MHz as secondary band. This work presents some aspects of
Journal of the Brazilian Computer Society. Publicado em: 2007-03
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12. The Brazilian digital television system access device architecture
In early 2003, the Brazilian government accelerated the decision process on analog to digital transition of terrestrial TV broadcast infrastructure, naming this initiative The Brazilian Digital Television System (SBTVD). This paper describes the access device architecture we have proposed for the SBTVD, as well as related issues. We focused on several requir
Journal of the Brazilian Computer Society. Publicado em: 2007-03