1000 resultados para Televisão Digital Terrestre (TDT)


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In Brazil, the discussion about thereplacement of analog television signals to digitaland its impact on society, in media companies andgovernment began in the 90s. Embryonic steps towardsdigitalisation of the television signal ground were thegovernment of Fernando Collor de Mello (1990-1992),with advances during the government of FernandoHenrique Cardoso (1994-2001) and in the governmentof Luiz Inacio Lula da Silva (2002). The academy startsthe discussion in 1996. This article aims to bring to lightthe results obtained from the survey Digital television:a historical perspective , which received the supportof CNPq for funding of two scholarships for scientifi cinitiation between August 2008 and July 2009. Theproject sought to identify what has been published onthe subject in the fi eld of Social Sciences and from threemacrodescritores (information management, publicpolicy and value chain), providing the li ing of a virtualcollection Zotero bibliographic innovative platform.The mapping serves to show the growing interest anddevelopment of research in the country during theperiod - when the number jumped to three works inthe fi rst seven years (1995-2001) to 198 in the last sevenyears (2002-2008). The research sought to identify themajor authors and works related to digital televisionand published in the country. The survey took intoaccount books, articles published in books, journals,Annals of Compós and Intercom, and dissertations andtheses. Data and refl ections on the survey are containedin this communication.

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A convergência da televisão digital com os jogos de computador é cada vez mais uma realidade. Neste artigo serão apresentadas três vertentes desta convergência: – a oferta de jogos pelos operadores de televisão digital e pelos canais de televisão; – a oferta de programação baseada em jogos de computador pelos canais de televisão; – a oferta de jogos com interacção via SMS pelo operadores de televisão digital e pelos canais de televisão, Em conclusão, são apresentadas duas linhas de evolução desta convergência no curto-médio prazo: 1) o lançamento de novos formatos de entretenimento, que conjugam diferentes meios (TV, Telemóvel, PC, PDA, etc) na definição de uma experiência de jogo acessível a qualquer hora e em qualquer lugar, 2) o lançamento de novos aparelhos que aliam as funcionalidades de uma consola de jogos à de uma set-top box avançada de televisão digital.

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Mestrado em Engenharia Electrotécnica e de Computadores

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Resumen tomado parcialmente del autor

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O desenvolvimento de serviços e conteúdos dedicados a públicos específicos, tendo em consideração as suas preferências, necessidades e atitudes, é um dos desafios da TV do futuro. O projeto “iDTV-Saúde: Serviços inclusivos de promoção da saúde e bem-estar via televisão digital interativa” (UTA-Est/MAI/0012/2009) tem como principal objetivo avaliar o potencial da TV digital interativa na promoção de serviços, formatos e conteúdos originais que possam ser relevantes no suporte aos cuidados pessoais de saúde e ao bem-estar da população com mais de 55 anos, em Portugal. Uma das componentes deste estudo passa pela produção de uma reportagem interativa seguida de um debate, em torno do tema “Diabetes”, dirigida especialmente à população sénior. O presente artigo descreve o conceito e a estratégia de desenvolvimento desta solução para TV interativa, cujo principal intuito é permitir à população-alvo o acesso a informação fidedigna e especializada sobre saúde, através do uso das novas tecnologias. A elaboração dos conteúdos informativos prevê a combinação dos conceitos de TV linear e TV interativa, com vista a oferecer complementaridade aos conteúdos atualmente difundidos pelos media tradicionais e a potenciar o aumento de capital social do público-alvo, bem como da sua literacia na área da saúde, respeitando as suas especificidades.

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Este trabajo verifica si el tiempo estimado por el Estado Ecuatoriano para la transición hacia la Televisión Digital Terrestre en el país, es razonable. Esta comprobación se la hace a partir del concepto de la Cadena de Valor de la Televisión y su evolución hasta llegar a la Televisión Digital Terrestre, la descripción de los distintos hitos del proceso de transición hacia la nueva tecnología, la evaluación del Plan Maestro de transición a la Televisión Digital Terrestre en el Ecuador y la visión de los potenciales oferentes respecto al tiempo establecido para el Apagón Analógico, enfoque este último realizado sobre la base de los diferentes aspectos contemplados en el Plan Maestro, los pasos dados hasta la fecha y los restantes requeridos para completar el Apagón Analógico. Complementariamente, el repaso histórico de los principales hechos ocurridos hasta la definición de los diferentes estándares disponibles en el mercado mundial, la descripción de los procesos seguidos en los distintos países de la Región y de aquellos referentes en el mundo, resaltando los aspectos más relevantes en cada caso y el estado en el que se encuentran dichas transiciones, son aspectos proporcionados para el análisis. Todos estos elementos constituyen insumos suficientes para abordar la perspectiva de la implementación de la Televisión Digital Terrestre en el Ecuador, referida al tiempo requerido de transición hacia la nueva tecnología en el país. Al final del trabajo la sección de Conclusiones y Recomendaciones, escritas sobre la base de los resultados de la investigación, da respuesta a la pregunta e hipótesis planteadas.

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In this work, we propose a new approach to Interactive Digital Television (IDTV), aimed to explore the concepts of immersivity. Several architectures have been proposed to IDTV, but they did not explore coherently questions related to immersion. The goal of this thesis consists in defining formally what is immersion and interactivity for digital TV and how they may be used to improve user experience in this new televisive model. The approach raises questions such as the appropriate choice of equipment to assist in the sense of immersion, which forms of interaction between users can be exploited in the interaction-immersion context, if the environment where an immersive and interactive application is used can influence the user experience, and which new forms of interactivity between users, and interactivity among users and interactive applications can be explored with the use of immersion. As one of the goals of this proposal, we point out new solutions to these issues that require further studies. We intend to formalize the concepts that embrace interactivity in the brazilian system of digital TV. In an initial study, this definition is organized into categories or levels of interactivity. From this point are made analisis and specifications to achieve immersion using DTV. We pretend to make some case studies of immersive interactive applications for digital television in order to validate the proposed architecture. We also approach the use of remote devices anda proposal of middleware architecture that allows its use in conjunction with immersive interactive applications

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This Dissertation aims to provide a communication mechanism between Digital TV viewers and interaction devices, such as robots, for example, placed on the environment from which a TV program is being live broadcasted. Such communication mechanism has the objective to allow viewers controll the Interaction Devices through their TV devices, using the broadcast channel present in Interactive Digital TV systems, and receive data from the devices by the broadcast channel. This system was projected as a middlewaer system where the Interaction Devices in the TV program set are interconnected, creating a Interactive Device Network. With this approach, the system is capable of manage the devices on the network, controlling the flow of coming and leaving elements, in a transparent way for the viewers. The system yet allows the Interaction Devices communicate each other, with a integrated communication channel with no worries about the physical communication layer

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Brazil is going through the process from analogical transmission to digital transmission. This new technology, in addition to providing a high quality audio and video, also allows applications to execute on television. Equipment called Set-Top Box are needed to allow the reception of this new signal and create the appropriate environment necessary to execute applications. At first, the only way to interact with these applications is given by remote control. However, the remote control has serious usability problems when used to interact with some types of applications. This research suggests a software resources implementation capable to create a environment that allows a smartphone to interact with applications. Besides this implementation, is performed a comparative study between use remote controle and smartphones to interact with applications of digital television, taking into account parameters related to usability. After analysis of data collected by the comparative study is possible to identify which device provides an interactive experience more interesting for users

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Pós-graduação em Comunicação - FAAC