277 research outputs found

    TV-Centric technologies to provide remote areas with two-way satellite broadband access

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    October 1-2, 2007, Rome, Italy TV-Centric Technologies To Provide Remote Areas With Two-Way Satellite Broadband Acces

    3D video coding and transmission

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    The capture, transmission, and display of 3D content has gained a lot of attention in the last few years. 3D multimedia content is no longer con fined to cinema theatres but is being transmitted using stereoscopic video over satellite, shared on Blu-RayTMdisks, or sent over Internet technologies. Stereoscopic displays are needed at the receiving end and the viewer needs to wear special glasses to present the two versions of the video to the human vision system that then generates the 3D illusion. To be more e ffective and improve the immersive experience, more views are acquired from a larger number of cameras and presented on di fferent displays, such as autostereoscopic and light field displays. These multiple views, combined with depth data, also allow enhanced user experiences and new forms of interaction with the 3D content from virtual viewpoints. This type of audiovisual information is represented by a huge amount of data that needs to be compressed and transmitted over bandwidth-limited channels. Part of the COST Action IC1105 \3D Content Creation, Coding and Transmission over Future Media Networks" (3DConTourNet) focuses on this research challenge.peer-reviewe

    Standards, IPR and digital TV convergence: theories and empirical evidence

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    none1Media convergence presents a few noticeable dimensions, and requests an interdisciplinary research approach. We conduct a long-run analysis of the main initiatives of technological standardization carried out in the realm of “traditional” (cable, satellite and terrestrial) digital TV, focusing on Europe, to assess the technological determinants of its apparent trends to convergence. This analysis inevitably calls into question IPR strategies and policies. In particular, we investigate how private incentives and the public agenda for interoperability have shaped the on-going convergence of the TV sector toward an “IP-based” meta-platform. Despite the widespread usage of open standards and formats, the real potential for interoperability along the digital TV filière has been modest, and mostly limited to the transmission segment. This is mainly due to the strong proprietary features characterizing the TV sector, where viable content production and provision rests on effective control of content IPR. Further, patent portfolio strategies and control of crucial copyrights become increasingly central for competing in the converging TV sector, where former telecom companies, traditional TV operators and new OTT players strive to become gatekeepers of essential layers of the new IP-based delivery platforms. To sum up, while technological opportunities today do enable pervasive media interoperability and affordable convergence at the user-level, private incentives relentlessly push the industry toward standards fragmentation and the construction of walled gardens.MPRA Working paper series n. 59359, Munich Personal RePEc ArchiveMatteucci NMatteucci, Nicol

    Cooperating broadcast and cellular conditional access system for digital television

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    This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.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
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