Remote tracking control system for a video cassette tape recorder

DETAILED DESCRIPTION Therefore, it is an object of the present invention to provide a remote tracking control system which varies a reference signal of a reference phase counter of a servo integrated circuit by remote control signals of tracking-up and tracking-down signals of a remote transmitter, thereby making the tracking variable.
The above object of the present invention is accomplished by: frequency-dividing color sub-carrier signals and counting the signals at a capstan reference counter; applying the counted signals to a microcomputer as a reference pulse signal when the counted value of the capstan reference counter is zero; outputting tracking trigger pulse signals from the microcomputer at a predetermined delay time on the basis of a point that the reference pulse signal is applied, and applying the tracking trigger pulse signal to a tracking monostable multivibrator by increasing or decreasing the output point of the tracking trigger signal depending upon the tracking up/down key signals which are received from the remote transmitter; beginning to count by a reference phase counter at a trigger point of the tracking monostable multivibrator; obtaining a latch control pulse signal by comparing the control pulse signal with a reference voltage and latching the counted values of the signal; outputting a pulse width modulation signal corresponding to the latched signal where the latched signal and the ring count signal are the same upon comparing them; and smoothing the pulse width modulation signal and mixing it with a speedometer signal and then applying the mixed signal as a drive control signal of a capstan motor.