行场同步信号

本文设计的模块具备同时产生并输出一路单色及一路RGB彩色视频信号的能力，还可以输出复合同步信号和分离的行场同步信号，叠加外部的视频信号。

The module has the capability of generating and outputting one channel of monochromatic and one channel of RGB color video signal . And it can output composite synchronization signal , horizontal and vertical synchronization signals .

加上前端处理电路产生的行场同步信号，最终形成了附和视频信号。

It adds up field / horizontal synchronization signal and become composite video .

数字化分离电视行、场同步信号电路的设计及实现

The Design and Realization of the Circuit of Separating H-hold and V-hold Signal with Digitizing in TV

但通常采用外同步发生器提供的行、场同步信号频率点容易漂移，使后期软件处理无法进行。

But extra synchronous generator which provides horizontal and vertical synchronous signal causes biased frequency so that the software process is unable to accomplish .

具体实现的电路功能包括内嵌控制信号（数据使能信号、行同步信号、场同步信号）的提取、颜色空间转换（YCbCr与RGB颜色空间的转换）、视频数据抖动处理方案等内容。

The circuits that implement the extraction of embedded control signals ( data enable signal , horizontal and vertical synchronous signals ), color space conversion ( YCbCr to RGB ), dithering treatment of video data .