多路视频信号交叉点开关器的计算机控制研究  

Study on the computer control of multichannel video crosspoint on off swifches

作　　者：王金海[1] 马崇良[1] 

机构地区：[1]天津纺织工学院自动化系

出　　处：《天津纺织工学院学报》1997年第4期48-55,共8页Journal of the Tianjin Institute of Textile Science and Technology

摘　　要：主要讨论了电视监视系统中的多路Ｉ／Ｏ通道的切换技术及其通道扩展技术．即利用单片机对由ＤＧ８８４构成的开关矩阵进行点对点的切换控制，并使用多机通讯来实现大规模视频信号的切换通道的扩展，用以增加信号采集点和监视点．This paper discusses the technology of computer's switching the video crosspoint array and expanding I/O channels of video in the system of watching by TV,namely,the video crosspoint array composed of DG884 that is switched by the single chip microcontroller and controlled from point to point by one microcontroller. A great number of I/O channels of video are expanded by microcontroller's communication to increase the number of collecting points and watching points.

关 键 词：视频信号 交叉点开关器 计算机控制 

分 类 号：TN941.2[电子电信—信号与信息处理] TP273[电子电信—信息与通信工程]