Research On Network Video Transmitting System Based On DM642 And The Key Technology Of Implementation

With the development of society and technology, video transmitting is used more and more, such as video telecommunicate, video guard, streaming media, digital TV and IPTV etc. In those systems, video coding is most important. ITU (International Telecommunication Union) and MPEG (Moving Picture Expert Group) have developed coding standard of their own, this promote the research and application of video coding extremely.The multimedia process chip TMS320DM642 which is made by TI in 2002 is used abroad in multimedia. Its all kinds of interface and high speed provide hardware foundation for real-time video sample and display, video encode and decode and net ware transmitting. Many network video products based on DM642 are used in real system.MPEG-4 is one of the most influence multimedia data coding standard. The video object method makes it have higher compression ratio, flexible, interactive characteristic. With the research of video compression, more and more embedded video processing system will be used in many fields.This paper particular introduce hardware and software design of the network video transmitting system base on DM642. The paper introduce the hardware design of DM642 video processing board, then introduce the arithmetic of MEPG-4 and its implement on DM642, the video transmitting by internet is introduce finally.