摘要
文章介绍MPEG-21多媒体框架标准的背景、目的和构成,解释其中的关键概念,进一步阐述MPEG-21的数字项,最后讲述MPEG-21发展中必须解决的关键问题。
This paper introduces the background,object and construction of MPEG-21multimedia framework and explains some key concepts of MPEG-21.In addition,the concept of digital item and the key issues of the development of MPEG-21are illustrated.
出处
《电信快报》
2003年第2期23-25,共3页
Telecommunications Information
