CATV中MPEG-2解复用器在RISC系统上的设计方案与实现  

A Design Approach and Implementation of MPEG-2 Demultiplexer with RISC Microcontroller in CATV Network

作　　者：赵忠伟 

机构地区：[1]杭州商学院,浙江杭州310035

出　　处：《中国有线电视》2004年第7期15-18,共4页China Digital Cable TV

基　　金：浙江省教育厅资助课题 (丛 2 0 0 3Y2 2 5 )

摘　　要：提出一种在CATV网络上利用RISC实时微控制器实现MPEG - 2解复用的设计方案。同当前流行的解复用器方案相比 ,这里采用的方案利用RISC控制器分离出TS解复用所必需的解码信息 ,然后利用系统软件将这些信息输入到MPEG - 2视频和音频解码器 ,从而顺利实现TS的解复用过程。从最后实现的结果来看 ,这种方案提供了更加灵活和消耗更低的数据处理能力。This paper proposes a design approach and implementation of MPEG-2 demultiplexer with RISC microcontroller in CATV netowrk. Comparing with previous approaches, this proposed method parses PSI/SI and needed information from inputting different TS with RISC controller. Meanwhile demultiplexing system software transfers these information into MPEG-2 video and audio decoder which successfully finishes the process of demultiplexer implemented. The performance and conclusion from the simulation show that this approach not only presents more flexible ability for data processing, but also lower CPU cycle consume than previous approaches.

关 键 词：MPEG-2 解复用器 RISC TS 有线电视网络 

分 类 号：TN943.6[电子电信—信号与信息处理]