基于高速A/D和FPGA,针对PAL制黑白全电视信号的特点而提出来的视频解码器的设计方案,基于采样时钟的高精度定时器与选通脉冲发生器,利用选通脉冲实现对全电视信号中特定同步信息的提取,可以产生各种同步时序信号,实现对全电视信号的解码。 Based on the high-speed A / D and FPGA, for PAL system characteristics of black and white television video decoder proposed design, sampling clock based on the high-precision timer and strobe pulse generator, strobe pulse to achieve full The extraction of specific synchronization information in the television signal can generate various synchronous timing signals and realize the decoding of the full television signal.