Made available in DSpace on 2016-04-04T18:36:36Z (GMT). No. of bitstreams: 1 Jose Dias Paschoal Neto-3.pdf: 22710753 bytes, checksum: d77ca7a8e7c3987cd4008fdd56006ba1 (MD5) Previous issue date: 2008-02-26 / The terrestrial digital TV launched in Brazil, on the night of December 2nd 2007 in S?o Paulo, without the main features: multiprogramming (more channels), portability and mobility (signal within mobile phones and receivers in movement) and mainly, interaction. Consequence of a disturbing process that resulted in the use of japans model, in June 2006, the fact of the digital TV arriving as TV of the "may be", doesn t eliminate your potentials. Studying your resources on the perspective of breaking a paradigm of the unique direction impost by the analogical model of transmission of signals and researching how interactive ness will impact new flows of productive information, dissemination and recovery of information from this new media are the objectives of this work, which uses the documental research, the direct, intensive and exploratory comments, the qualitative analysis, among others, as the methodological procedures. The science information, with a multidisciplinary characteristic and that has within the recovery information your historical roots, is the referenced field of study. The perspective of the viewers interacting with the information in the TV, permitting even, to produce or generate content, the social cycle of information, proposed by Le Coadic, is studied as the model applied in the new paradigms of digital TV. The work takes as basis the new paradigms of information to study the construction of interactive contents and inclusive the addition of integrated knowledge in a collaborative job. In this context, I highlight the university and their television, in special, as the place to experiment new contents developed in the convergence of the medias, the technologies and the addition of new diverse professional competences. / A TV Digital terrestre brasileira estreou na noite de dois de dezembro de 2007, em S?o Paulo, sem nenhum dos seus principais recursos: multiprograma??o (mais canais), portabilidade e mobilidade (sinal em celulares e receptores em movimento) e, principalmente, a interatividade. Conseq??ncia de um pol?mico processo que resultou na ado??o do padr?o japon?s, em junho de 2006, o fato de a TV Digital chegar como a TV do pode ser , n?o elimina suas potencialidades. Estudar seus recursos na perspectiva da quebra do paradigma da unidirecionalidade imposta pelo modelo anal?gico de transmiss?o de sinais e pesquisar como a interatividade vai impactar nos fluxos informacionais da produ??o, dissemina??o e recupera??o da informa??o nessa nova m?dia, ? o foco deste trabalho, que utiliza como procedimentos metodol?gicos, a pesquisa documental, as observa??es diretas, intensivas, explorat?rias e a an?lise qualitativa, entre outros. A Ci?ncia da Informa??o, como ci?ncia de caracter?stica multidisciplinar e que tem na recupera??o da informa??o, suas ra?zes hist?ricas, ? o campo referencial de estudo. Na perspectiva do telespectador interagir com a informa??o na TV, chegando, at? mesmo, a produzir e gerar conte?do, o Ciclo Social da Informa??o, proposto por Le Coadic, ? estudado como modelo que se aplica aos novos paradigmas da TV Digital. O trabalho toma como base os novos paradigmas da informa??o para estudar a constru??o de conte?dos televisivos interativos e inclusivos a partir de conheceres integrados num trabalho colaborativo. Nesse contexto, aponta-se a Universidade e as TVs Universit?rias, em especial, como espa?o para a experimenta??o de novos conte?dos desenvolvidos na converg?ncia das m?dias e das tecnologias e na somat?ria de compet?ncias profissionais diversas. O resgate hist?rico da TV PUC-Campinas e sua a evolu??o tecnol?gica s?o tomadas como refer?ncia no processo de migra??o do anal?gico para o digital.

O processo de digitalização da TV em diversos países do mundo tem contribuído para o aumento do volume de programas de TV, o que gera uma sobrecarga de informação. Consequentemente, o usuário está enfrentando dificuldade para encontrar os programas de TV favoritos dentre as várias opções disponíveis. Diante deste cenário, os sistemas de recomendação destacam-se como uma possível solução. Tais sistemas são capazes de filtrar itens relevantes de acordo com as preferências do usuário ou de um grupo de usuários que possuem perfis similares. Entretanto, em diversas recomendações o interesse do usuário pode depender do seu contexto. Assim, torna-se importante estender as abordagens tradicionais de recomendação personalizada por meio da exploração do contexto do usuário, o que poderá melhorar a qualidade das recomendações. Para isso, este trabalho descreve uma infraestrutura de software de suporte ao desenvolvimento e execução de sistemas de recomendação sensíveis ao contexto para TV Digital Interativa - intitulada de PersonalTVware. A solução proposta fornece componentes que implementam técnicas avançadas para recomendação de conteúdo e processamento de contexto. Com isso, os desenvolvedores de sistemas de recomendação concentram esforços na lógica de apresentação de seus sistemas, deixando questões de baixo nível para o PersonalTVware gerenciar. As modelagens de usuário, e do contexto, essenciais para o desenvolvimento do PersonalTVware, são representadas por padrões de metadados flexíveis usados na TV Digital Interativa (MPEG-7 e TV-Anytime), e suas devidas extensões. A arquitetura do PersonalTVware é composta por dois subsistemas: dispositivo do usuário e provedor de serviços. A tarefa de predição de preferências contextuais é baseada em métodos de aprendizagem de máquina, e a filtragem de informação sensível ao contexto tem como base a técnica de filtragem baseada em conteúdo. O conceito de perfil contextual também é apresentado e discutido. Para demonstrar e validar as funcionalidades do PersonalTVware em um cenário de uso, foi desenvolvido um sistema de recomendação sensível ao contexto como estudo de caso. / The process of digitalization of TV in several countries around the world has, contributed to increase the volume of TV programs offered and it leads, to information overload problem. Consequently, the user facing the difficulty to find their favorite TV programs in view of various available options. Within this scenario, the recommender systems stand out as a possible solution. These systems are capable of filtering relevant items according to the user preferences or the group of users who have similar profiles. However, the most of the recommender systems for Interactive Digital TV has rarely take into consideration the users contextual information in carrying out the recommendation. However, in many recommendations the user interest may depend on the context. Thus, it becomes important to extend the traditional approaches to personalized recommendation of TV programs by exploiting the context of user, which may improve the quality of the recommendations. Therefore, this work presents a software infrastructure in an Interactive Digital TV environment to support context-aware personalized recommendation of TV programs entitled PersonalTVware. The proposed solution provides components which implement advanced techniques to recommendation of content and context management. Thus, developers of recommender systems can concentrate efforts on the presentation logic of their systems, leaving low-level questions for the PersonalTVware managing. The modeling of user and context, essential for the development of PersonalTVware, are represented by granular metadata standards used in the Interactive Digital TV field (MPEG-7 and TV-Anytime), and its extensions required. The PersonalTVware architecture is composed by two subsystems: the users device and the service provider. The task of inferring contextual preferences is based on machine learning methods, and context-aware information filtering is based on content-based filtering technique. The concept of contextual user profile is presented and discussed. To demonstrate the functionalities in a usage scenario a context-aware recommender system was developed as a case study applying the PersonalTVware.

Aplicações de captura e acesso (C&A) exploram o paradigma de computação ubíqua para dar apoio à captura automática de informação em experiências ao vivo e à correspondente geração de documentos passíveis de armazenamento, recuperação, visualização e extensão ao longo do tempo. Essas aplicações são potencialmente capazes de simplificar o processo de autoria de documentos multimídia visto que permitem a combinação e a sincronização automáticas de informação coletada por sistemas computacionais de uso pessoal e coletivo disseminados no ambiente. Aplicações de C&A também tornam possível a incorporação de sistemas de software que utilizem a capacidade computacional instalada para apoiar atividades humanas em andamento, promovendo novas formas de colaboração e de interação entre seus participantes e permitindo o registro dos acontecimentos, a geração de documentos que possibilitem sua reconstituição e o compartilhamento dos artefatos capturados. Este trabalho aborda de maneira conjunta diferentes aspectos envolvidos na captura automatizada de atividades humanas. Primeiramente, estende-se a visão tradicional com a sugestão da captura automatizada não apenas de mídias convencionais, mas do processo interativo do usuário como um todo, de modo a permitir a autoria e a personalização de conteúdo digital interativo e das anotações associadas. Ao mesmo tempo, são tratados aspectos colaborativos com o desenvolvimento e o uso de uma infra-estrutura distribuída de comunicação. Baseada em uma plataforma de computação peer-to-peer, os componentes e os serviços implementados suportam atividades de colaboração e compartilhamento de conteúdo entre os usuários. É feita experimentação das propostas com sua aplicação em cenários reais de ambientes de aprendizado, de computação móvel e de TV digital interativa / Capture and access (C&A) applications explore the ubiquitous computing paradigm to support the automated capture of information in live experiences and the corresponding generation of documents that can be stored, retrieved, visualized and extended along time. These applications are potentially capable of simplifying the authoring of multimedia documents by allowing the automatic combination and synchronization of information collected using personal and shared computational devices available in the environment. C&A applications also bring the opportunity for the incorporation of software systems that use such installed computational base to support on-going human activities, promoting new forms of collaboration and interaction among their users and enabling the recording of events, the generation of documents allowing their reconstitution and the sharing of the captured artifacts. This thesis addresses in a joint manner the different issues involved with the automated capture of human activities. First, the traditional vision is extended with the suggestion of automatically capturing not only conventional medias, but the general user interactive process as a whole, allowing the authoring and customization of interactive digital content and associated annotations. At the same time, collaborative aspects are treated with the development and use of a distributed communication infrastructure. Based on a peer-to-peer computing platform, the proposed components and services support collaborative activities and content sharing among users. The resulting systems and abstractions are experimented through their use in real scenarios comprising learning, mobile computing and interactive digital TV environments

在數位有線電視的發展中，收視率系統從以往的統計調查方式得以進入到普查計算的方式，因此新收視率系統可以更精細。而在新的收視率收集調查中，有線電視業者有了全體收視戶的詳細收視行為資料，更可以有更多的應用方式。 本研究認為有線電視業者得以運用上述的資訊，再加上數位匯流下的其他用戶屬性的交叉分析後，產生出具有個人化推薦效果的新廣告平台；這樣的新廣告模式可為現有的廣告業者與廣告主所接受而採用。 同時，對於有線電視業者與新收視率系統公司的合作，或是現有有線電視產業中其他角色業者的合作關係改變，本研究也提出了可能性的分析與探討。 / In the development of digital cable television, the ratings system evolves from the statistical based approach into full audience based approach. So the new ratings system can be more precise. Cable system operators will have all subscribers’ detail viewing behavior information in the new rating collection process, thus they can have more applications accordingly. The study suggests that the system operators could combine above information with other user information from their digital convergence business landscape to produce new advertising platform with personalized recommended capability. This new advertising model will be accepted and be used by existing advertising companies and advertisers. Also the study has elaborated about the partnership possibility between system operators and the new ratings system company, as well as the possible relationship change among companies in existing cable industry.

<p>The market for digital TV is developing and some industry actors focus on interactive TV. Interactive content and services that previously only were able to use through a standard PC are now available to use through the TV set. To distribute the services to the TV a so called set top box with broadband connection needs to be used. Such a box can be described as a unit where a standard PC and a digital TV receptor are integrated.</p><p>This thesis aims to investigate the market for electronic payment solutions with a focus on payment for interactive content and services in digital TV. The presumptive services are many which lead to a relative complex analysis of how they should be paid for. What kind of service is it really to be paid for? </p><p>In order to conduct an appropriate analysis this thesis contains an identification of five different service-/content types. The grouping we have conducted is in so called On Demand services, Voice over IP, Shopping, Interactive TV and web services. In order to be able to conduct a relevant assessment of how the distributed services should be paid for the understanding of the market situation is utterly important. Therefore the thesis contains a pre study of the different market actors that can be related to a set top box and interactive TV. </p><p>The study of eight different actors on the Swedish market provides an overview of content providers’ as well as payment companies’ view on how interactive content and services should be paid for. The result from the thesis is a recommendation on how an electronic payment solution should be designed and important aspects to think of. One of the key outcomes is that different services needs different types of payment solutions which implies that you should first decide on what type of services that are to be provided before a decision is made on the payment solution. </p><p>A byproduct from the thesis is the analysis model that facilitates analysis of services as well as payment solutions and - methods related to electronic payments and interactive media.</p>

<p>In a Swedish setting an audience orientation is applied to investigate public service TV in the ongoing development of terrestrial digital television. Focus is on institutionalized politics and public service TV companies Sveriges Television (Swedish Television) and Utbildningsradion (Education Radio). In a case study through a multitude of material, emphasizing policy documents and interviews but also including media coverage, it is explored how and why the audience is involved in public service digital TV development. Is it an operation in the public interest, and what does this mean for public service as a media policy principle? The empirical result indicates a complex and problematic audience, which is not constantly prioritized but always present. The audience legacy is threatened in public service TV by a consumer orientation. Concluding implications are on the one hand that feedback from the audience can not only be based in ratings and market analysis. On the other hand there is a need for an attitude towards public service legitimacy as utopian realism.</p>

The market for digital TV is developing and some industry actors focus on interactive TV. Interactive content and services that previously only were able to use through a standard PC are now available to use through the TV set. To distribute the services to the TV a so called set top box with broadband connection needs to be used. Such a box can be described as a unit where a standard PC and a digital TV receptor are integrated. This thesis aims to investigate the market for electronic payment solutions with a focus on payment for interactive content and services in digital TV. The presumptive services are many which lead to a relative complex analysis of how they should be paid for. What kind of service is it really to be paid for? In order to conduct an appropriate analysis this thesis contains an identification of five different service-/content types. The grouping we have conducted is in so called On Demand services, Voice over IP, Shopping, Interactive TV and web services. In order to be able to conduct a relevant assessment of how the distributed services should be paid for the understanding of the market situation is utterly important. Therefore the thesis contains a pre study of the different market actors that can be related to a set top box and interactive TV. The study of eight different actors on the Swedish market provides an overview of content providers’ as well as payment companies’ view on how interactive content and services should be paid for. The result from the thesis is a recommendation on how an electronic payment solution should be designed and important aspects to think of. One of the key outcomes is that different services needs different types of payment solutions which implies that you should first decide on what type of services that are to be provided before a decision is made on the payment solution. A byproduct from the thesis is the analysis model that facilitates analysis of services as well as payment solutions and - methods related to electronic payments and interactive media.

In a Swedish setting an audience orientation is applied to investigate public service TV in the ongoing development of terrestrial digital television. Focus is on institutionalized politics and public service TV companies Sveriges Television (Swedish Television) and Utbildningsradion (Education Radio). In a case study through a multitude of material, emphasizing policy documents and interviews but also including media coverage, it is explored how and why the audience is involved in public service digital TV development. Is it an operation in the public interest, and what does this mean for public service as a media policy principle? The empirical result indicates a complex and problematic audience, which is not constantly prioritized but always present. The audience legacy is threatened in public service TV by a consumer orientation. Concluding implications are on the one hand that feedback from the audience can not only be based in ratings and market analysis. On the other hand there is a need for an attitude towards public service legitimacy as utopian realism.

[pt] A tecnologia do rádio cognitivo tem sido pesquisada para utilização mais eficiente do espectro, pois permite o aproveitamento de faixas de frequência subutilizadas. Dispositivos rádio cognitivos que operam na banda de frequência da TV digital são conhecidos como White Space Devices (WSD) e utilizam canais livres sob a condição de não provocar interferência acima do limite estabelecido pelo órgão regulador. A autoridade reguladora do Reino Unido, Office of Communication (Ofcom), publicou, em fevereiro de 2015, a primeira regulação européia permitindo a operação de sistemas WSD na banda da TV digital através do suporte de sistemas de banco de dados geolocalizados. O regulamento Ofcom define uma metodologia para calcular a potência de transmissão máxima de um WSD através de um método de entrada única (single-entry) da interferência intersistema máxima. Devido a isso, a interferência agregada de WSDs co-canais que operam na mesma região pode ultrapassar a interferência intersistema máxima. Além deste problema, verifica-se que a metodologia Ofcom não define a interferência intersistema máxima pelo mesmo critério da interferência intrasistema como foi definida pelo planejamento do sistema primário de TV. Esta tese desenvolve uma nova metodologia de cálculo da potência de transmissão dos WSDs que soluciona os problemas identificados na metodologia Ofcom. A metodologia proposta garante a proteção do receptor de TV digital através de uma abordagem de múltiplas entradas da interferência dos WSDs e, adicionalmente, aumenta a capacidade do sistema WSD quando comparada à metodologia Ofcom. / [en] The technology of cognitive radio has been researched for more efficient use of spectrum, since it allows the use of under-utilized frequency bands. Cognitive radio devices operating in the digital TV frequency band are known as White Space Devices (WSD) and use free channels under the condition of not causing interference above the limit set by the regulator. The UK regulatory authority, Office of Communication (Ofcom), published in February 2015, the first European regulation allowing WSD systems in the digital TV band through the support of geo-database systems. The Ofcom regulation defines a methodology to calculate the maximum WSD transmission power through a single-entry method for the maximum intersystem interference. Due to this, the aggregate interference of cochannel WSDs operating in the same region may exceed this maximum intersystem interference. In addition to this problem, it is verified that the Ofcom methodology does not define maximum intersystem interference by the same criterion of intrasystem interference as was defined by the primary TV system planning. This thesis develops a new methodology for calculating the transmission power of WSDs that solves the problems identified in the Ofcom methodology. The proposed methodology guarantees the protection of the digital TV receiver through a multiple-entry approach of the WSDs interference and, additionally, increases the WSD system capacity when compared to the Ofcom methodology.

[pt] Esta dissertação trata dos discursos em torno do surgimento das novas tecnologias. O entendimento da relevância do como se diz, para que se elucide o contexto do novo, busca na Análise do Discurso uma metodologia para a compreensão de tais discursos. Para tanto, a partir do estudo de caso de vídeos sobre a divulgação da TV digital interativa no Brasil, será demonstrada a contribuição do Design para a análise do discurso híbrido, presente na linguagem audiovisual. / [en] This dissertation deals with the discourses on the emergence of the new technologies. The understanding of the relevance of how to say, in order to clarify the context of the new, seeks in the Discourse Analysis a methodology for the comprehension of such discourses. To do so, from the study case of videos on the divulgation of interactive digital TV in Brazil, will be demonstrated the contribution of Design to the analysis of the hybrid discourse, present in the audiovisual language.