Multi Business With The Unified Control System Of The Vcr

At present, the most of VTR which are used in watch-control occasion for speciality are short of a uniform control-check-alarm system, which brings on the discommodiousness of operation and the user can not know the time of occurring a fault , which reduces the reliability of the watch-control system. Therefor, at first, I carefully analyze the servo theory of the VTR which had been produced by CHMAVC with K mechanism to find out the work rule of the control signal; second, take out some right control signal; then for dealing with the problem of VTR in use for watch-control, I choose some right components to design the uniform control system for many special VTR with PROTEL software. It mainly includes the following functions: Operation functions of all VTR ( for example: POWER, PLAY, FF, REW, STOP, REC, EJECT, FWD, RWD, SP, LP ) was controlled by line at the same time; in, the process of recording , when the tape walks to the end or stops by itself , the system gives an alarm and shows the number of the wrong VTR; in the process of recording , the system gives an alarm and shows the number of the wrong VTR when the video signal from vidicon is losed; the system controls all VTR to record on the non-working time when there is something wrong in the guarding section; the system controls the video from VTR to switch to right monitor. The main equipment of the system is VTR in commonly, so the uniform control system for VTR will make the whole watch-control system more convenient and more reliable.