基于TMS320DM642的嵌入式网络视频服务器的实现  

Implementation of embedded network video server based on TMS320DM642

作　　者：鹿宝生[1] 陈启美[1] 丁胜军 

机构地区：[1]南京大学电子科学与工程系,江苏南京210093 [2]江苏省通启高速公路管理处,江苏南通226000

出　　处：《计算机工程与设计》2006年第13期2362-2364,共3页Computer Engineering and Design

基　　金：交通部重大科研攻关基金项目(交科教发[2004]548);江苏省交通科学研究计划基金项目(03x003)

摘　　要：针对构建高可靠性的多媒体数字视频监控系统,设计了运行于DM642上的基于H.264编码标准的嵌入式网络视频服务器。介绍了DM642定点DSP芯片的结构特点,详细阐述了视频服务器的硬件结构、软件设计以及视频数据网络传输与处理等主要技术。同时从网络带宽和实时编码的角度出发,结合DM642的结构和专用操作指令,提出了核心编码算法和软件程序的优化方案。实验结果表明,该方案对视频图像的压缩编码效果良好,并且满足监控系统视频图像的实时性需求。Aimed at design of high reliable video monitor systems, an embedded network video server with respect to its hardware architecture which is based on H. 264 codec standard running on DM642 is introduced. The fixed-point chip DM642 is introduced firstly. Then the hardware structure, the software design scheme and the internet transport are explained particularly. Moreover, based on the custom operations of DM642, taking reference of the algorithm proposed in literature, the programs are optimized. The experimental results show that this algorithm performs an excellent compression efficiency, and is feasible with the need of real time video monitor systems.

关 键 词：嵌入式网络视频服务器 TMS320DM642 H.264 优化 视频传输 

分 类 号：TN919.85[电子电信—通信与信息系统]