Brazilian System For Digital Tv
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Editorial Comment: Penile cancer information on the internet: a needle in a haystack
Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence of new technologies and services, such as 5G transmission and the reuse of frequencies, new work is being carried out to ensure a better design for a particular area. This study examines a discrete radi
Int. braz j urol.. Publicado em: 2020-12
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2. Optimum Positioning of Base Station for Cellular Service Devices Using Discrete Knowledge Model
Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence of new technologies and services, such as 5G transmission and the reuse of frequencies, new work is being carried out to ensure a better design for a particular area. This study examines a discrete radi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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3. Usabilidade em TV Digital
This study does a chronological description about the construction of the Brazilian Digital TV System (SBTVD Sistema Brasileiro de TV Digital), since its establishment by the Decree 4901 in June 2006, until its current state-of-art. This new standard was created in Brazil to offer the most modern technology available and a tool for digital and social inclusi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2010
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4. Desempenho de codigo turbo quaternario em sistemas de multiplexação por divisão de frequencias ortogonais / Performance of quaternary turbo codes in orthogonal frequency division multiplex systems
This study evaluates the performance of quaternary turbo codes, with generator matrix G = [7, 5] for the constituent convolutional codes and s-random interleaving , in an OFDM transmission system. This performance is measured in terms of bit error rate versus energy per bit to unilateral noise power spectral density ratio. The results obtained are analyzed c
Publicado em: 2010
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5. Códigos LDPC quaternários aplicados à técnica de transmissão OFDM / Quaternary LDPC codes applied to OFDM transmission technique
This dissertation addresses the study of error correcting codes based on sparse non-binary matrices. The LDPC (Low Density Parity Check) codes constitute a efficient family of codes generated by sparse parity check matrices and it is considered as one of the classes of codes that presents the best performance in digital communications systems. LDPC codes ove
Publicado em: 2010
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6. Módulo IP de um Demultiplexador para o Subsistema Fluxo de Transporte- MPEG-2-Aderente ao Sistema Brasileiro de TV Digital
In the Brazilian scenario, the development of hardware components through computational methodologies and tools, available at affordable costs to education and research centers have make it feasible to design blocks and integrated circuit modules up to intellectual property IP level, focusing strategic areas of industry, specially those dedicated to the comp
Publicado em: 2010
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7. The Use of Artificial Neural Networks in the Estimation of Coverage Digital TV Signal / A Utilização de Redes Neurais Artificiais na Estimação da Cobertura do Sinal de Televisão Digital
THIS works presents information about signal intensity obtained on field and from simulations for one-seg and full-seg receptions, the city of Goiania. The values obtained from measurements were used for a comparisson among propagation models that are presented in literature, and the goal is to determine the real condition of digital TV signal in the region
Publicado em: 2009
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8. STRATEGIES FOR MOBILE ENTERTAIMENT INDUSTRY: DELTA MODEL APPLICATION / ESTRATÉGIAS PARA A INDÚSTRIA DE ENTRETENIMENTO MÓVEL: APLICAÇÃO DO MODELO DELTA
With the advent of Digital Television in our country, free-to-air television broadcasters are now able to offer viewers new applications, as portable TV, which gives the latest ability to watch content freely from all Brazilian TV companies, by using personal devices including Mini TVs, Palm Tops and Cell Phones. The main purpose of this thesis is to propose
Publicado em: 2009
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9. Scalable video coding for fixed reception in the Brazilian digital TV system. / Codificação escalável de vídeo para recepção fixa no sistema brasileiro de televisão digital.
Em dezembro de 2007, a partir da cidade de São Paulo, as transmissões de televisão digital terrestre e aberta tiveram início no Brasil. Um avanço significativo do Sistema Brasileiro de TV Digital (SBTVD) foi a adoção do padrão H.264/AVC e o formato de vídeo 1080i para a codificação de vídeo em alta definição. A adoção em larga escala de tecno
Publicado em: 2009
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10. Estimativa do número de estações de rádio base para a implantação do WIMAX no Distrito Federal
During the past years, the video, voice and data services available in the fixed communications networks have been requested by users in mobility. This fact has motivated the development of technologies that allow traffic of a lot of information in cellular telephone networks. WiMAX e UMTS are technologies that can help the traffic flow. The WiMAX, known as
Publicado em: 2009
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11. Análise mercadológica para a implementação da tecnologia FTTH: uma aplicação do método SWOT / Marketing analysis for FTTH technology implementation: an application of SWOT method
The fiber optics is a transmission system that has been used to enable products that need high bandwidth, such as the telephone system, videoconferencing, local area networks (LANs), downloads of large files etc. In Brazil, we found an increased number of fiber optic networks. This ratify its advantages in relation to metal wire cable (immunity to electromag
Publicado em: 2009
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12. 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