数字电视传输系统中PCR抖动的校正分析与实现  

Analysis and Implementation of PCR Jitter Correction in Digital Television Transmission System

作　　者：杜邓宝[1] 潘长勇[1] 

机构地区：[1]清华大学电子工程系微波与数字通信国家重点实验室,北京100084

出　　处：《电视技术》2005年第7期47-50,共4页Video Engineering

摘　　要：在MPEG-2标准的基础上,分析了PCR在数字电视传输系统中产生抖动的原因和校正的方法。同时在基于DMB-T的数字电视传输系统中用硬件实现了PCR校正单元,并通过对实际采集到的数据的分析,给出了PCR校正的效果。Based on the standard of MPEG-2,the cause of PCR jitter and PCR correction method in Digital Television Transmission System are analyzed. The hardware implementation of PCR correction scheme in Digital Television Transmission System based on DMB-T is realized. Finally, the effect of PCR correction is given through analyzing the data collected in practical system.

关 键 词：节目参数时钟 DMB-T标准 数字电视传输系统 抖动 

分 类 号：TN943[电子电信—信号与信息处理]