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目前,光纤入户(FTTH)已成为实现三网融合的最终解决方案,但FTTH的总线型拓扑结构制约其难于实现真正的视频点播。为了缓解FTTH的带宽压力,采用了设计一种新的帧结构的方法,并且提出了光纤综合业务传输系统。本文即基于该系统提出的一种在三网融合中处理电视信号的方法。文章首先从电视信号传输流(TS:ProgramStream)的语法结构以及MEPG-2系统复用的基本结构入手,然后给出从TS流中解析出各路电视信号的算法,最后给出了该算法实现的部分仿真波形图。
At present, FTTH has become the ultimate solution for realizing triple play. However, the bus-type topology of FTTH restricts its realization of true video on demand. In order to alleviate the bandwidth pressure of FTTH, a new method of designing a frame structure is adopted, and an optical fiber integrated service transmission system is proposed. This article is based on the system proposed in a triple play in the treatment of television signals. Firstly, the paper begins with the syntax structure of the TS stream and the basic structure of the MEPG-2 system multiplexing. Then, the algorithm of parsing out each channel of television signals from the TS stream is given. Finally, Part of the simulation waveform.