视频图像采集系统的设计与实现

阐述了一个新颖的、较为通用的视频信号采集系统软硬件设计原理.本系统采用EPLD芯片完成了以前需要多个分立芯片才能完成的采集控制电路,简化了电路设计,便于调试.系统中采用锁相环路控制视频同步.还详细介绍了EPLD程序的设计方法及流程.

The Design and Realization of an Image Acquisition System

A novel system is designed to digitize general video signals. The hardware principle and software principle of the system are described. The timing and synchronization of the circuits are achieved by an EPLD chip which can achieve the same functions by many separate components in the previous digitizing systems. This idea is favorable for the design of circuits and easy for debugging. A PLL circuit is adopted in order to control video signal synchronization.;