摘要
多路视频监控中常常会用到视频切换,而现行的各种视频切换多为基于播放时间的切换,切换瞬间会有图像损失,这对视频监控是不利的。基于这种问题,本文设计一个应用在嵌入式系统的基于帧切换的多路视频切换系统,使用复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD)提高电路集成度并简化开发流程。仿真结果显示切换瞬间扰动时间只有一帧图像的十万分之一,结果良好。
Most of the in existence multi-channel video switching method is base on time. And the picture may be partly broken at the moment of switching. It is a disadvantage in video monitoring. Aim to solute the problem, we design a system that switches multi-channel video signal base on frame. Using complex programmable logic device （CPLD） can upgrade the integration of the circuit and simplify the designing flow. The simulation show a nice effect that the disorder signal just hundred thousandth of a frame in time.
出处
《微计算机信息》
2010年第26期125-127,共3页
Control & Automation
