Digital Tv Brazil
Mostrando 13-24 de 32 artigos, teses e dissertações.
-
13. Front-end of the Brazilian Digital TV system. / Sintonizador-demodulador para o sistema brasileiro de TV digital.
O sintonizador-demodulador de RF, também chamado de Front End, é definido de uma forma geral como sendo o conjunto ou módulo que está entre a antena e o sistema digital. Para um receptor isto inclui todos os filtros, amplificadores de baixo ruído, misturadores e demoduladores, necessários para processar o sinal modulado recebido na antena, demodulá-lo
Publicado em: 2008
-
14. A TV digital no Brasil : do SBTVD ao ISDTV-T : a política a reboque da tecnologia
This thesis aims discuss digital televisions establishment in Brazil, observing the political actions which has been designed by the Communications Department since Luis Inacio Lula da Silva, the President of Brazil, first term of office 2002 to 2006 considering the dates of November 26t h 2003, the inauguration of the Brazilian System of Digital TVDTV, acco
Publicado em: 2008
-
15. Análise do desempenho do sistema brasileiro de TV digital sob condições adversas de recepção
The main objective of this work is to study and evaluate the receptions conditions of a Digital TV signal, modulated in Brazilian standard and received with the use of an internal and external antenna, to analyze and to study the interferences that affect it. Comparing the conditions for receipt of the theoretical model of Okumura Hata with real data collect
Publicado em: 2008
-
16. 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
-
17. 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
-
18. Business analysis to offer Digital TV service over IP (IPTV) in Brazil / Análise de negócios na oferta do serviço de TV digital via IP (IPTV) no Brasil
O atual cenário brasileiro das telecomunicações se apresenta bastante dinâmico e competitivo, o que requer a adoção de um novo modelo de negócios orientado a serviços convergentes para recompor a receita das operadoras e reconquistar a fidelidade dos clientes. É nesse contexto que o objetivo deste trabalho é o de desenvolver uma metodologia que pos
Publicado em: 2008
-
19. 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
-
20. Ensaios sobre economia da mídia : oferta de conteúdos das empresas de mídia no Brasil
Three papers discuss various issues related to the contents supplied by Brazilian media firms. The first one, Advertising and Growth (Publicidade e crescimento econômico), revisits the Principle of Relative Constancy PRC, that advocates a regularity in the aggregate advertising spending vs GNP ratio. A simple static model is proposed to discuss this regular
Publicado em: 2008
-
21. 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
-
22. Ginga-J: the procedural middleware for the Brazilian digital TV system
The recent development of the research on digital terrestrial television in Brazil has led the country's government to state a series of premises in which the government shows to care not only for technology improvement, but also to use this development as a tool for ameliorating the Brazilian social context, in what concerns digital inclusion. These premise
Journal of the Brazilian Computer Society. Publicado em: 2007-03
-
23. COMPOSER: AN AUTHORING TOOL OF NCL DOCUMENTS FOR INTERACTIVE DIGITAL TV / COMPOSER: UM AMBIENTE DE AUTORIA DE DOCUMENTOS NCL PARA TV DIGITAL INTERATIVA
With the advent of adoption of an interactive digital TV standard by the Brazilian government, the interest for the analysis of possible alternatives in several areas that compose a digital TV system has increased. In the case of Brazil, NCL is the declarative language adopted for modeling interactive applications in the Brazilian Terrestrial Digital TV Syst
Publicado em: 2007
-
24. Estudo de aplicativos de TVDi para educação a distancia / Study of iDTV applications for distance learning
Brazil has been conducing the migration of your television broadcasting system from the analogical to the digital system, also called Digital TV (DTV). Among the goals to be achieved with this migration is the digital inclusion of millions of brazilians that are reached by this media, which is present in more than 90% of the houses. The development of Distan
Publicado em: 2007