Zugl.: Köln, Universiẗat, Diss., 1995.

Universiẗat, Diss., 2001--Köln.

Zugl.: Köln, Fachhochsch., Diplomarbeit, 2005

Conventional key distribution methods using on Pay-TV system emphasize on the method¡¦s refinement in order to reduce the quantity of the keys distributed over network. This paper brings up the manner using digital watermarking technique to hide the cryptographic keys into routine encrypted video file without any increment of video file size for the economy of network bandwidth. The experimental results show that the proposed method works well in image quality and economical key distribution.

Fachhochsch., Diplomarbeit--Köln, 2005.

The broadcasting sector is a subject of continual debate in modern society. One of the oldest segments of the rapidly-evolving information technology and communications industry, it is still the most content rich and the most popular. Australians who watch television spend more time doing so than doing any other leisure activity – except those who fish (ABS 1998). Broadcasting is highly pervasive. Some kind of service is available and used in every Australian household. Everyone is an expert, everyone has an opinion. Since the Federal Government decided to allow the introduction of domestic subscription television in 1992, pay television has been broadly dismissed by its media rivals as being unpopular, unprofitable and unnecessary. In turn, the Australian pay television industry considers that it is over-regulated, especially compared to the free-to-air sector, and that much of this regulation severely constrains its ability to grow its subscriber base. This thesis examines whether the Australian subscription television industry has achieved the aims set for it by the legislators in 1992 – that is, whether it has ‘met its promise’. To achieve this, the thesis first identifies the ‘promises’ of an Australian subscription television industry. In assessing whether the industry has met its promise, the thesis considers various aspects of the industry, including what the industry has needed to do to make itself profitable and ensure its longevity and the environment within which the industry operates. The thesis examines the role that content plays in attracting subscribers and considers whether minimal content regulation has resulted in a paucity of local content on subscription television in Australia. The thesis draws on existing academic literature, government publications, information released by the subscription television industry itself and interviews conducted in the course of the project with the Australian subscription television sector. It also uses and builds on ratings data to examine the programs and channels that are offered by Australian pay television services. In concluding, this thesis makes an assessment of whether the Australian pay television industry has met its promise.

The lack of interoperability between Pay‐TV service providers and a horizontally integrated business transaction model have compromised the competition in the Pay‐TV market. In addition, the lack of interactivity with customers has resulted in high churn rate and improper security measures have contributed into considerable business loss. These issues are the main cause of high operational costs and subscription fees in the Pay‐TV systems. This paper presents a novel end‐to‐end system architecture for Pay‐TV systems cooperating mobile and broadcasting technologies. It provides a cost‐effective, scalable, dynamic and secure access control mechanism supporting converged services and new business opportunities in Pay‐TV systems. It enhances interactivity, security and potentially reduces customer attrition and operational cost. In this platform, service providers can effectively interact with their customers, personalise their services and adopt appropriate security measures. It breaks up the rigid relationship between a viewer and set‐top box as imposed by traditional conditional access systems, thus, a viewer can fully enjoy his entitlements via an arbitrary set‐top box. Having thoroughly considered state‐of‐the‐art technologies currently being used across the world, the thesis highlights novel use cases and presents the full design and implementation aspects of the system. The design section is enriched by providing possible security structures supported thereby. A business collaboration structure is proposed, followed by a reference model for implementing the system. Finally, the security architectures are analysed to propose the best architecture on the basis of security, complexity and set‐top box production cost criteria.

Orientadora: Profª. Drª. Ana Keila Mosca Pinezi / Coorientadora: Profª. Drª. Clarissa de Franco / Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Ciências Humanas e Sociais, Santo André, 2018. / O estudo da participação de agentes religiosos no espaço político institucionalizado ganha força no cenário público devido ao aumento no número de parlamentares eleitos ligados a denominações religiosas. Propõe-se a analisar como agentes do campo religioso assumiram espaços no campo político a fim de participarem do campo midiático por meio da análise da tramitação da Lei da TV Paga, que obrigou a inclusão de emissoras de cunho religioso no sistema fechado de televisão. Discutiu-se as relações entre a religião e o Estado moderno brasileiro, com base nas noções de secularização e da relação histórica entre o poder público e a Igreja Católica, bem como a ocupação de espaços midiáticos por denominações representadas no campo político. Analisou-se os impactos da lei a partir da tramitação até o estágio atual de pesquisas sobre o tema, além dos métodos empregados na realização desta pesquisa, e o discurso de parlamentares que atuaram diretamente na feitura do texto constitucional. Concluiuse que a participação de agentes religiosos, inseridos no campo político, durante a tramitação da lei, faz parte de uma estratégia de garantia de espaços no campo midiático, envoltos no cenário plural e de disputas entre as religiões no Brasil. / The study of the participation of religious agents in the institutionalized political space gains force in the public scenario when the number of elected members of religious institutions increases. We propose to analyze how agents of the religious field assumed spaces in the political field in order to participate in the media field by analyzing the process of the Pay TV Law, which forced the inclusion of religious stations in the closed television system. We discuss the relations between religion and the modern Brazilian state, based on the notions of secularization and the historical relation between the public power and the Catholic Church, as well as the occupation of media spaces by institutions represented in the political field. We analyze the impacts of the law from the processing to the current stage of research on the subject, in addition to the methods used to carry out this research, and the speech of parliamentarians who acted directly in the making of the constitutional text. We conclude that the participation of religious agents, inserted in the political field, during the course of the law, is part of a strategy of guaranteeing spaces in the media field, wrapped in the plural scenario and disputes between religions in Brazil.

Submitted by Isabela Cahú (icahu@embratel.com.br) on 2009-07-13T17:42:18Z No. of bitstreams: 1 Isabela Cahu - Biblioteca.pdf: 797404 bytes, checksum: fab962ae5496badd4016fa45a6de60aa (MD5) / Approved for entry into archive by Vitor Souza(vitor.souza@fgv.br) on 2009-07-14T18:24:11Z (GMT) No. of bitstreams: 1 Isabela Cahu - Biblioteca.pdf: 797404 bytes, checksum: fab962ae5496badd4016fa45a6de60aa (MD5) / Made available in DSpace on 2009-07-14T18:24:44Z (GMT). No. of bitstreams: 1 Isabela Cahu - Biblioteca.pdf: 797404 bytes, checksum: fab962ae5496badd4016fa45a6de60aa (MD5) / A presente tese busca analisar as relações entre as estruturas de produto e custo e a verticalização mediante a aplicação da teoria microeconômica básica. Verificamos que os pacotes de canais ofertados ao consumidor podem ser explicados através de 3 efeitos: Discriminação de Preço, Complementariedade entre grupos de canais e Dispersão da propensão a pagar entre grupos de canais. Dentro das hipóteses indicadas acima, identificamos que a renda do consumidor, o estímulo ao consumo de um canal avançado mediante o consumo de um canal básico e/ou a dispersão da propensão a pagar justificam a estratégia de oferta mediante pacotes de canais de televisão. Constatamos que o mercado de TV por Assinatura é caracterizado pelo elevado poder de mercado associado à infra-estrutura de distribuição (custo fixo alto), e que a verticalização entre as empresas da cadeia produtiva do mercado audiovisual é um fenômeno comum desse mercado. Identificamos, ainda, que é possível existir práticas discriminatórias mediante imposição de limites ao uso de redes de distribuidora por programadoras rivais. Entretanto, a Integração Vertical pode ser motivada por questões de economias tecnológicas ou ganhos de integração de monopólios sucessivos que levam a ganhos de eficiência econômica no mercado e não configuram, portanto, práticas discriminatórias. Ao analisarmos os principais modelos para análise da estrutura de mercado, identificamos que o papel do custo fixo é determinante para a estrutura do mesmo e o número de firmas no mercado não determina a eficiência.

Submitted by ANA HELOÍZA VITA PESSOTTO null (anahvp@gmail.com) on 2016-09-28T15:14:49Z No. of bitstreams: 1 Dissertação Ana Heloiza Vita Pessotto.pdf: 2262963 bytes, checksum: 5e4248ba8fa170d8db544c827ca53813 (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-09-30T16:47:52Z (GMT) No. of bitstreams: 1 pessotto_ahv_me_bauru.pdf: 2262963 bytes, checksum: 5e4248ba8fa170d8db544c827ca53813 (MD5) / Made available in DSpace on 2016-09-30T16:47:52Z (GMT). No. of bitstreams: 1 pessotto_ahv_me_bauru.pdf: 2262963 bytes, checksum: 5e4248ba8fa170d8db544c827ca53813 (MD5) Previous issue date: 2016-08-19 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Esta pesquisa tem como objetivo a avaliação de eficiência da Lei do Serviço de Acesso Condicionado (Lei da TV paga - Lei 12.485/11) a partir dos indicadores: promoção da diversidade cultural, estímulo à produção independente e à produção regional. Para tal fim, a pesquisa apresenta um breve histórico da implantação do serviço de TV paga no Brasil com ênfase para a evolução das regulações direcionadas ao conteúdo. Descreve, com base no modelo do Ciclo de Políticas Públicas, o estágio de implementação da Lei 12.485/11 e o texto final da mesma. Para subsidiar a avaliação, o conceito de cultura nacional é discutido, desvelando as concepções de culturas híbridas (CANCLINI, 2008) e identidades emergentes (BHABHA, 1998) e o papel destes dentro do ambiente cultural globalizado. A presente investigação permite compreender a maneira como se deu a introdução das diretrizes voltadas ao conteúdo na regulação do setor e a forma como estas influenciaram o mercado de produção audiovisual para a TV paga no Brasil. / This research aims to evaluate the efficiency of the Conditional Access Service Law (Pay TV Law - Law 12.485/11) from indicators promoting cultural diversity, fostering of independent productions and regional production. For this purpose, the research presents a brief history of pay TV service deployment in Brazil with emphasis on the development of regulations directed to the content. It describes, based on the model of the Public Policy Cycle, the implementation stage of Law 12,485/11 and the final text of the same. To support the evaluation, the concept of national culture is discussed, revealing the concepts of hybrid cultures (CANCLINI, 2008) and emerging identities (BHABHA, 1998) and their role within the global cultural environment. This research allows us to understand the way how was the introduction of guidelines geared to the content in the sector regulation and how they influenced the audiovisual production market for pay TV in Brazil.