Horizontal skew elimination system for a VTR

Claim 1

A horizontal picture skew elimination system comprising: a video tape recorder for reproducing video signals recorded on a video track of a video tape and control pulses recorded on a control track of a video tape and for generating a head switch signal; a delay circuit for delaying said video signals and applying the delayed video signals to a television monitor; a control pulse detector having said control pulses and said head switch signal supplied thereto for detecting the number of said control pulses appearing during one field which is detected as one half period of said head switch signal and for outputting a count signal corresponding thereto; a control circuit having said count signal and said head switch signal supplied thereto for producing a delay time selection signal which is supplied to said delay circuit for selecting one of several different predetermined delay times for each field, said control circuit including a memory means for storing said delay time selection signal for one field period, said delay time selection signal being produced in accordance with said head switch signal, said count signal and the delay time selection signal which was produced in a previous field and stored in said memory means, wherein said several different predetermined delay times are respective integer numbers multiplied by 0.25H, wherein H corresponds to a period of a horizontal synchronizing signal; wherein said control circuit operation is repeated on a field by field basis so as to thereby eliminate horizontal picture skew appearing on said television monitor.