摘要
介绍一种新设计的视、音频切换电路，可对八路的视、音频信号实行选路或循环切换，并具有二路至八路任意路数输入的循环切换设置．设计的电路采用ＣＭＯＳ模拟开关，控制电路由轻触开关和数字集成电路组成．循环切换时每一路图像在监视器上的驻留时间可以调整．电路中的Ｑ０输出选通控制电路与复位控制电路。
For the use of video/audio switcher, a latest circuit is presented. It contains 2～8 arbitrary channel imput shifter by which channel selection and recursion of 2～8 arbitrary channels signals can be realized. In the designed circuit, CMOG analog switch is adopted and the control circuit is composed of switch and digital integrated circuit. The time for the image of each touch channel to dwell on invigilator during recursive switching can be adujsted. In the circuit, Q 0 output gating control circuit and reset control circuit have settled the conflict between control signal of degital circuit in channel selection and that in sequential recursive switching.
出处
《华侨大学学报（自然科学版）》
CAS
1998年第2期197-201,共5页
Journal of Huaqiao University(Natural Science)
关键词
复位控制
视音频切换电路
电视监视系统
video/audio switching, Q 0 output gating, reset control, dwell time
