Resource adaptation based on MPEG-21 usage environment descriptions
نویسندگان
چکیده
This paper addresses several aspects related to the distribution of content. The first aim is to provide an overview of the Universal Multimedia Access (UMA) concept. The primary function of UMA services is to provide the best Quality of Service (QoS) or User experience by either selecting/adapting the content format to meet the playback environment, or adapting the content playback environment to accommodate the content. The second purpose of this paper is to describe how the concept of UMA relates to the emerging MPEG standard, Digital Item Adaptation (DIA), which will become Part 7 of the MPEG-21 standard. An update on the standards activity in this area will be presented. Finally, the third purpose of this paper is to describe the impact that DIA will have on transcoding strategies, where we describe topics that we are currently working on and analyze some areas of future research. This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Information Technology Center America; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Information Technology Center America. All rights reserved. Copyright c ©Mitsubishi Electric Information Technology Center America, 2003 201 Broadway, Cambridge, Massachusetts 02139 Proc. IEEE Int’l Conference on Circuits and Systems, Bangkok, Thailand, May 2003. RESOURCE ADAPTATION BASED ON MPEG-21 USAGE ENVIRONMENT DESCRIPTIONS Huifang Sun, Anthony Vetro and Kohtaro Asai Mitsubishi Electric Research Laboratories, Murray Hill, NJ, USA Mitsubishi Electric Corporation, Kamakura, Kanagawa, Japan
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