Digital Rights Management (DRM) refers to a broad category of access control technologies aimed at restricting the use and copy of digital content on a wide range of devices. We examine some recent and existing technologies that represent the standards of commercial DRM in most of mainstream media formats including film, e-book, broadcast TV, computer games and music. We discuss the architectur...

In this paper, we report on user behaviors by analyzing visual clues while users are watching various TV broadcast in pilot settings. We detail the first results of the empathic analysis of viewers watching four distinct videos in dedicated recording sessions. Viewers are sitting in front of a TV set in unconstrained position (free postures, free head poses and free body movements) on a chair a...

It is no easy thing to insert viewer participation seamlessly within a narrative structure when planning interactive TV program, and moreover there are not any existing processes to solve such difficulty in practice. Thus, in this paper, we proposed a new design process to be suitable to map out viewer participation of interactive TV program and demonstrated the application of our design proces...

In this paper we present the design of an environment that offers personalized, ubiquitous information services in the emerging integrated world of the digital-TV and the Internet. This environment is based on extended TV sets with a large capacity disk and Internet connection. We present an architecture that integrates external service providers that provide extended information services about...

Traditional television screens have lost their monopoly on television content. With a helping hand of digitalization, the introduction of ever more screens in our lives and increasingly faster network technologies, a wide variety of alternative screens and sources of television content are trying to conquer a piece of the audiences' viewing time. This evolution calls for new kinds of services a...

Instead of selling advertisement spots one by one, some French satellite channels decided in 2002 to modify their commercial offer in order to sell packages of spots. These new General Conditions of Sale lead to an interesting optimization problem that we named the TV-BREAK PACKING PROBLEM (TVBP). We establish its NP-hardness and study various resolutions approaches including linear programming...

In recent years, a number of commercial peer-to-peer TV (P2PTV) applications have been launched. Yet, their mechanisms and characteristics are unknown. In this paper, we study SopCast, a typical proprietary P2PTV system. Treating SopCast as a black box, we perform a set of experiments that are suitable to analyze SopCast in depth. We attempt to disclose the SopCast protocol. The dynamic nature ...

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