摘要
MPEG-2标准中的系统部分强调将一个或更多个音频、视频或其他的基本数据流合成单个或多个数据流,以适应于存储和传输。本文建立了接收端系统解码器的PCR校正模型,同时结合嵌入式实时操作系统VxWorks,采用了有限状态机的思想进行软件设计,成功校准了PCR和本地系统时钟的误差,解决了发送端和接受端的时钟同步问题。
The system part of MPEG-2 addresses the combining of one or more elementary streams of video and audio, as well as other data, into single or multiple streams which are suitable for storage or transmission. The paper setups the PCR correction model of system decoder in the end of receiver, develops the software with the method of finite state machine under the embedded real time operation system VxWorks, and successfully corrects the difference between the PCR value and the local system clock, solves the synchronization problem of transmitter and receiver.
出处
《微计算机信息》
2009年第17期148-149,144,共3页
Control & Automation
基金
江苏省高校自然科学基金项目资助
基金申请人:张颖超
项目名称:音频解码技术
基金颁发部门:江苏省教育厅(06KJD520122)
江苏省"六大人才高峰"项目资助
基金申请人:张颖超
项目名称:多媒体系统协议解析技术
基金颁发部门:江苏省人事厅(06-A-027)
