Brazilian Digital Television System Research Articles

<b>JPB interativo: proposta de aplicação interativa para telejornal na TV digital</b><br>DOI:10.5007/1984-6924.2010v8n1p197

With the development of technology and the purpose of a stronger television, with new services, the process of mediated interaction has increased and became a challenge of Brazilian digital terrestrial television system. In television news, the audiovisual informative product with a wider scope in society, the use of interactive applications provides a more active position of viewers, that, because of the TV with integrated return channel, they can take part of the programs, instead of looking for another devices. The incorporation of surveys, targeted subjects, chat, additional informations and quiz already lends itself as a trend and gives to the television news a configuration closer to an electronic magazine. So, this article presents a case study focused on the Brazilian Digital TV news, based on the prototype developed by LAVID, where some trends are pointed to the interactive JPB(television news affiliate of Glob TV in Joao Pessoa).

Evaluating two implementations of the component responsible for decoding video and audio in the Brazilian digital TV middleware

The project Ginga Code Development Network (GingaCDN) was created to implement a reference version of Ginga, the Brazilian Digital Television System (SBTVD) middleware, supporting the declarative GingaNCL and the procedural GingaJ environments in the same middleware. To reach that, a common core is being implemented, named Ginga Common Core (GingaCC). One of the main components of the GingaCC is the one responsible to decode audio and video streams, called Media Processing. In this work, two Media Processing implementations using libVLC and Xine graphical libraries are investigated. Performance tests and results of both Media Processing implementations running in two different desktop architectures are discussed.

The Brazilian digital television system access device architecture

AbstractIn 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 requirements among which: flexibility to support the social economical diversity enabling market implementations that can vary on cost, complexity and applications; digital inclusion targeting a minimal cost architecture providing a simple access device to information and services by convergent broadcast and point-to-point telecommunication means; and scalability targets incorporating state-of-the-art technology, considering emerging services and the current legacy analog TV infrastructure available in Brazil. We cover the following specific topics: an architecture overview considering scalability, interoperability and regional and international requirements, operating system and middleware interfaces, audio and video coding formats and associate standards, technical and economical analysis, usability and user interface consistency. Finally two prototypes for the outlined access device architecture are reported.

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 system, its characteristics and most relevant innovations are presented. The performance of the whole system under different channels is compared with the performance of the present-day Digital Television standards. The complete system was implemented in FPGA using VHDL language and rapid prototyping tools for DSP algorithms.

The Brazilian digital television system access device architecture

The Brazilian digital television system access device architecture

MI-SBTVD: A proposal for the brazilian digital television system SBTVD

AbstractThe 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 system, its characteristics and most relevant innovations are presented. The performance of the whole system under different channels is compared with the performance of the present-day Digital Television standards. The complete system was implemented in FPGA using VHDL language and rapid prototyping tools for DSP algorithms.