一种MPEG2解码同步算法及其分析

讨论了MPEG2解码系统的时间模型和各种基本流的同步机理 ,详细介绍了MPEG2系统时间时钟的恢复 ,设计出具体的采用锁相环 (PLL)的时钟恢复电路 ,给出了针对节目流 (PS流 )的解码器同步算法的具体实现及其相应电路 ,针对各种失步情况 ,做出了具体的错误掩盖处理。算法及几个主要电路设计适用于各种MPEG2解码器。

A Decode Synchronization Algorithm and Its Analysis for MPEG2

This paper descusses the timing model of MPEG2 decoder and its synchronization mechanism for different elementary stream. We describe clock recovery of system time clock in detail, design a specific circuit of clock recovery with PLL and present a synchronization algorithm for PS stream. The error concealment processing for every cases of asynchronization is provided too. The algorithm in the paper and its several circuit designs are proper for all kinds of MPEG2 decoder.;