一种CCD彩色摄像系统的视频锁相同步系统

介绍一种应用于ＣＣＤ彩色摄像系统的视频锁相同步系统。基于锁相理论的视频锁相同步系统是一个二级锁相环路，包括同步信号发生电路和高频点像素时钟电路。并详细阐述了同步信号发生电路和高频点像素时钟电路的锁相原理及电路。高频点像 时钟电路的外分频电路是由现场可编门阵列实例可编程特必珂得到不同频率的高频点像素时钟。

The video phase locked synchronization system for CCD color camera

This paper introduces the design and implementation of the video phase locked synchronism system for CCD color camera. The system clock based on the theory of phase-locked loop(PLL) is a two level PLLincluding the circuit of the synchronization signals and highfrequency pixel clock. The paper describes the phaselocked principle and the circuit of the synchronization signals and high-frequency pixel clock in detail. Field programmable gate array (FPGA) is adopted to implement the external devider of pixel clock. With its field programmable feature, the clock of defferent frequency can be obtained.