22,591 research outputs found

    Media fusion and future TV: Examining multi-screen TV convergence in Singapore

    Get PDF
    This study examines Singapore's national media blueprint and industry stakeholders' coping strategies in response to multi-screen TV development. The findings show Singapore muti-screen TV development is still at a nascent stage after launching Media Fushion and FutureTV plans in mid 2009. The policymakers play a key role to follow national media blueprint to unify the inter-industry and cross-country collaboration. TV operators and telcos are found to remediate themselves by harnessing the power of internet and mobile technologies for content innovation and distribution. To tackle the complicated convergent issues in multi-screen TV industry, this study proposes to separately regulate the technology-neutral platforms and diverse audiovisual content. It also recommends a pro-innovative policy with the light-touch licensing scheme and loose content regulation to facilitate the development of the next TV. --three-screen TV,multi-screen TV,convergence,media fusion,IPTV,mobile TV,cross-platform,TV technologies,TV market,TV policy

    Management of Digital Video Broadcasting Services in Open Delivery Platforms

    Get PDF
    The future of Digital Video Broadcasting (DVB) is moving towards solutions offering an efficient way of carrying interactive IP multimedia services over digital terrestrial broadcasting networks to handheld terminals. One of the most promising technologies is Digital Video Broadcasting-Handheld (DVB-H), at present under standardisation. Services deployed via this type of DVB technologies should enjoy reliability comparable to TV services and high quality standards. However, the market at present does not provide effective and economical solutions for the deployment of such services over multi-domain IP networks, due to their high level of unreliability. This paper focuses on service management, service level agreement (SLA) and network performance requirements of DVB-H services. Experimental results are presented concerning QoS sensitivity to network performance of DVB-H services delivered over a multi-domain IP network. Moreover, a solution for efficient and cost effective service management via QoS monitoring and control and network SLA design is proposed. The solution gives DVB-H operators the possibility of fully managing service QoS without being tied to third party operators

    Understanding user experience of mobile video: Framework, measurement, and optimization

    Get PDF
    Since users have become the focus of product/service design in last decade, the term User eXperience (UX) has been frequently used in the field of Human-Computer-Interaction (HCI). Research on UX facilitates a better understanding of the various aspects of the user’s interaction with the product or service. Mobile video, as a new and promising service and research field, has attracted great attention. Due to the significance of UX in the success of mobile video (Jordan, 2002), many researchers have centered on this area, examining users’ expectations, motivations, requirements, and usage context. As a result, many influencing factors have been explored (Buchinger, Kriglstein, Brandt & Hlavacs, 2011; Buchinger, Kriglstein & Hlavacs, 2009). However, a general framework for specific mobile video service is lacking for structuring such a great number of factors. To measure user experience of multimedia services such as mobile video, quality of experience (QoE) has recently become a prominent concept. In contrast to the traditionally used concept quality of service (QoS), QoE not only involves objectively measuring the delivered service but also takes into account user’s needs and desires when using the service, emphasizing the user’s overall acceptability on the service. Many QoE metrics are able to estimate the user perceived quality or acceptability of mobile video, but may be not enough accurate for the overall UX prediction due to the complexity of UX. Only a few frameworks of QoE have addressed more aspects of UX for mobile multimedia applications but need be transformed into practical measures. The challenge of optimizing UX remains adaptations to the resource constrains (e.g., network conditions, mobile device capabilities, and heterogeneous usage contexts) as well as meeting complicated user requirements (e.g., usage purposes and personal preferences). In this chapter, we investigate the existing important UX frameworks, compare their similarities and discuss some important features that fit in the mobile video service. Based on the previous research, we propose a simple UX framework for mobile video application by mapping a variety of influencing factors of UX upon a typical mobile video delivery system. Each component and its factors are explored with comprehensive literature reviews. The proposed framework may benefit in user-centred design of mobile video through taking a complete consideration of UX influences and in improvement of mobile videoservice quality by adjusting the values of certain factors to produce a positive user experience. It may also facilitate relative research in the way of locating important issues to study, clarifying research scopes, and setting up proper study procedures. We then review a great deal of research on UX measurement, including QoE metrics and QoE frameworks of mobile multimedia. Finally, we discuss how to achieve an optimal quality of user experience by focusing on the issues of various aspects of UX of mobile video. In the conclusion, we suggest some open issues for future study

    Multicast broadcast services support in OFDMA-based WiMAX systems [Advances in mobile multimedia]

    Get PDF
    Multimedia stream service provided by broadband wireless networks has emerged as an important technology and has attracted much attention. An all-IP network architecture with reliable high-throughput air interface makes orthogonal frequency division multiplexing access (OFDMA)-based mobile worldwide interoperability for microwave access (mobile WiMAX) a viable technology for wireless multimedia services, such as voice over IP (VoIP), mobile TV, and so on. One of the main features in a WiMAX MAC layer is that it can provide'differentiated services among different traffic categories with individual QoS requirements. In this article, we first give an overview of the key aspects of WiMAX and describe multimedia broadcast multicast service (MBMS) architecture of the 3GPP. Then, we propose a multicast and broadcast service (MBS) architecture for WiMAX that is based on MBMS. Moreover, we enhance the MBS architecture for mobile WiMAX to overcome the shortcoming of limited video broadcast performance over the baseline MBS model. We also give examples to demonstrate that the proposed architecture can support better mobility and offer higher power efficiency

    Aereo and Internet Television: A Call to Save the Dukes (A La Carte)

    Get PDF
    If it looks like a duck, swims like a duck, and quacks like a duck, it is probably a duck. The most recent U.S. Supreme Court decision regarding the Copyright Act employed this “duck test” when determining that Aereo, an Internet content-streaming company, violated the Copyright Act by infringing on the copyrights of television broadcast networks. The Supreme Court ruled that Aereo\u27s Internet streaming services resembled cable television transmissions too closely. Therefore, by streaming copyrighted programming to its subscribers without the cable compulsory license, Aereo violated the Transmit Clause of the 1976 Copyright Act. Subsequently, Aereo used this Supreme Court decision to obtain a compulsory license from the Copyright Office but was denied. Forced back into litigation, Aereo filed for Chapter 11 Bankruptcy This Issue Brief describes Aereo’s technology, the litigation that followed, and the related precedent, and concludes that the district court should have granted Aereo a Section 111 Statutory License in line with the Supreme Court’s “duck test.” It considers the implications of the Court’s preliminary injunction against Aereo’s “a la carte” TV technology, what this means for the future of similar technological innovation, and the effects on consumers and competition

    Aereo and Internet Television: A Call to Save the Dukes (A La Carte)

    Get PDF
    If it looks like a duck, swims like a duck, and quacks like a duck, it is probably a duck. The most recent U.S. Supreme Court decision regarding the Copyright Act employed this “duck test” when determining that Aereo, an Internet content-streaming company, violated the Copyright Act by infringing on the copyrights of television broadcast networks. The Supreme Court ruled that Aereo\u27s Internet streaming services resembled cable television transmissions too closely. Therefore, by streaming copyrighted programming to its subscribers without the cable compulsory license, Aereo violated the Transmit Clause of the 1976 Copyright Act. Subsequently, Aereo used this Supreme Court decision to obtain a compulsory license from the Copyright Office but was denied. Forced back into litigation, Aereo filed for Chapter 11 Bankruptcy This Issue Brief describes Aereo’s technology, the litigation that followed, and the related precedent, and concludes that the district court should have granted Aereo a Section 111 Statutory License in line with the Supreme Court’s “duck test.” It considers the implications of the Court’s preliminary injunction against Aereo’s “a la carte” TV technology, what this means for the future of similar technological innovation, and the effects on consumers and competition
    • 

    corecore