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双向工业电视(ITV)系统是这样的一种双向传输电视系统。该系统在发送、接收信号端,分别设有ITV摄象机、监视器,对摄象机、监视器进行切换的开关以及能够控制该开关切换的控制部分。利用某一端的控制部分产生的控制信号,来切换本控制端的开关,同时该控制信号通过控制总线传送到另一端,也切换该端的开关。这样,通过连接这两个开关的图象传输电缆,就可以互相切换所传输的图象信号的传输方向,从而构成一个灵活的双向ITV
Two-way industrial television (ITV) system is such a two-way transmission television system. The system at the sending and receiving signal terminals, respectively, with ITV cameras, monitors, cameras and monitors to switch the switch and can control the switching of the control part. The control signal generated by the control part of one end is used to switch the switch of the control end. At the same time, the control signal is transmitted to the other end through the control bus, and the switch of the end is also switched. Thus, the transmission direction of the transmitted image signal can be switched to each other by the image transmission cable connecting the two switches, thereby constituting a flexible bidirectional ITV