Brazilian System For Digital Tv
Mostrando 13-24 de 26 artigos, teses e dissertações.
-
13. 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
-
14. H-N2N : uma arquitetura hierárquica escalável para ambientes de realidade mista de grande porte
In this work, we propose a solution to solve the scalability problem found in collaborative, virtual and mixed reality environments of large scale, that use the hierarchical client-server model. Basically, we use a hierarchy of servers. When the capacity of a server is reached, a new server is created as a sun of the first one, and the system load is distrib
Publicado em: 2008
-
15. 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
-
16. MI-SBTVD: a proposal for the Brazilian digital television system SBTVD
The objective of this paper is to present a general overview of the Innovative Modulation System Project -MI-SBTVD - developed for the Brazilian Digital TV System. The MI-SBTVD Project includes an LDPC high performance error correcting code, an advanced transmit spatial diversity and an efficient multi-carrier modulation scheme. The building blocks of the sy
Journal of the Brazilian Computer Society. Publicado em: 2007-03
-
17. 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
-
18. Ginga-NCL: the declarative environment of the Brazilian digital TV system
As in all main terrestrial DTV Systems, the Brazilian middleware, named Ginga, supports both declarative applications (through its presentation, or declarative, environment Ginga-NCL) and procedural applications (through its execution, or procedural, environment Ginga-J). Since hybrid applications are common, either type of Ginga application may make use of
Journal of the Brazilian Computer Society. Publicado em: 2007-03
-
19. 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
-
20. 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
-
21. DECLARATIVE ENVIRONMENT FOR SYSTEMS IMPLEMENTING GEM / AMBIENTE DECLARATIVO PARA SISTEMAS QUE IMPLEMENTEM O GEM
The several procedural environment proposals for terrestrial Digital TV Systems led to the middleware framework recommendation known as Globally Executable MHP (GEM). This standard aims at the harmonization of such environments allowing the global execution of procedural applications but neglecting the declarative ones. In this context, this work describes t
Publicado em: 2007
-
22. Implementação de codificador LDPC para um sistema de TV digital usando ferramentas de prototipagem rapida / Implementation of an LDPC encoder for a digital TV system using rapid protoyping tools
This work presents the several phases in the implementation of an LDPC encoder for a digital television system, developed using innovative technologies for rapid prototyping on Field Programmable Gate Array devices - FPGAs. The implemented encoder was based on an eIRA - extended Irregular Repeat Accumulate - LDPC code with codeword-Iength equal to 9792 bits
Publicado em: 2006
-
23. Um modelo de seguranÃa para o canal de interatividade do sistema brasileiro de TV Digital: arquitetura e implementaÃÃo
Digital TV makes possible the digital convergence, that corresponds to the intersection of Media (audio and video), Computing (data processing, execution of applications, etc.) and Communication (data transmission through a communication network). Besides the improvement on the audio and video quality in respect to Analog TV, Digital TV brings the possibilit
Publicado em: 2006
-
24. Televisão digital terrestre: sistemas, padrôes e modelos / terrestrial Digital television - systems, standards, models
The prime objective of this work is related to the analysis of the settlemet of Brazilian System for Digital TV, and aspects of television production for interactive one. In terms of methodology, this paper presents a practical work on the elaboration of interactive TV program model (presented in the end of this thesis). In my understanding, the shift of the
Publicado em: 2005