三网融合系统电视信号预处理的FPGA实现

针对PON技术在实现FTTH方面存在的缺点与不足,提出了一种在P2P的传输模式下,基于背板交换和采用星型网络拓扑的三网融合架构.为实现中心交换模块对数据交换的要求,需对三网输入信息进行前期预处理,本文对电视信号进行了预处理设计.借助QuartusⅡ平台搭建了一电视信号预处理电路的仿真实验,进行了包含三路电视节目TS流的预处理仿真.结果表明,已成功从TS流中分离出组成每路电视节目的音、视频基本流,可为中心交换模块提供友好的交换界面.

The FPGA Implementation of TV Signal Preprocessing in the Triple Play System

In view of the disadvantages and shortcomings of FTTH using PON technology to a chieve, this paper presents a triple play architecture based on the backplane switching and a star type network ,in the transmission mode of P2P. The preprocessing of three network input information has to be done to realize the data exchange requirements of the central exchange module. In this paper, the TV signal preprocessing design is done. A simulation experiment of TV signal preprocessing is builted through the platform of Quartus Ⅱ and the experimental results are given, which contains three-way television programs. It shows that the audio and video elementary streams of per television programs have been successfully extracted from the TS stream, leading to a user-friendly interface will be provided for the central exchange module.