This text is comprehensive guide to MPEG-21, the technology that provides an open framework for multimedia applications. Whereas previous MPEG standards defined compression techniques, MPEG-21 offers methods for the search, access, storage and Rights protection of content. offers a complete introduction to standardisation, before proceeding to discuss the vision behind MPEG-21, what ‘Digital Items’ are, how they are adapted and how their contents can be protected. The book provides coverage of the individual parts of the standard to an advanced level, with chapters dedicated to each of the core technologies. The authors describe not only the present situation, but also emerging developments and the relation of MPEG-21 to the other MPEG standards, giving essential insights into the future of MPEG and its impact on multimedia. will provide an essential resource to researchers, engineers, Internet designers, systems designers, and content providers, creators and distributors in the entertainment and broadcasting industries. Students in communications technology, media technology and multimedia signal processing will also find it an invaluable guide to this cutting-edge technology.