H.263编码技术在多媒体远程教学系统的应用  

Application of H.263 coding in multimedia network education

作　　者：蒋文蓉[1] 王安保[1] 林士玮[1] 

机构地区：[1]上海第二工业大学计算机与信息学院,上海201209

出　　处：《计算机工程与设计》2008年第6期1469-1471,共3页Computer Engineering and Design

基　　金：2004年度上海市教委科技基金项目(04RB09)

摘　　要：结合多媒体远程教学系统的研究与开发,讨论了视频信号的编解码方法,重点阐述了H.263视频编码解码方法,并利用MMX技术,提出了优化的算法。优化以后的算法提高了程序运行的效率,完全可以满足软件实现实时编解码的需要。然后,重点讨论了计算机CPU和内存优化方案,从而大大减少了远程网络教学系统对电脑资源的占用,解决了跨网段通讯的难题,满足了对基于Internet的多媒体远程网络教学系统的要求。The multi-media remote education system＇s research and development is combined.Firstly,the method of compressing and decompressing audio data are discussed especially H.263 protocol.Some methods are introduced to optimize the coder and decoder using MMX,which have a good effect on the efficiency of the program and can meet the need of real-lime communication.Secondly,optimizing computer CPU and memory is also emphasized.The occupation of computer resources caused by software of multimedia education system is decreased significantly.The barrier of net section communication＇s is removed.The requirements of multimedia network education system based on Internet are satisfied.

关 键 词：H.263编码 解码 视频 多媒体远程教学 MMX技术 模块 

分 类 号：TP311.131[自动化与计算机技术—计算机软件与理论]