DVB-C系统中,传输的多为传送流。而在传送流中,节目时钟参考(PCR)对TS流的传输速率、对终端解码器的正确解码等起着至关重要的作用。下面对PCR进行简单的讨论。一、PCR的概述及结构在编码器中有一个单一的公用系统时钟,该时钟用于创建指出音频和视频的正确的显示和解码时间的时 DVB-C system, the transmission of mostly transport stream. In the transport stream, the program clock reference (PCR) plays a crucial role in the transmission rate of the TS stream and in the correct decoding of the terminal decoder. The following is a brief discussion of PCR. First, the PCR overview and structure In the encoder has a single common system clock, the clock used to create audio and video that point out the correct display and decoding time