Vertical interval data blanker

A stretched vertical interval pulse is developed by a transistorized integrating circuit supplied with a composite sync signal applied to a data recovery and unscrambler circuit in a television decoder. The decoder includes a pair of transmission gates that are controlled respectively by VNX and VIX signals developed in the unscrambler circuit. The VNX signal is supplied through an OR gate to the normal transmission gate and the output of the vertical interval pulse stretcher is applied to the other input of the OR gate for delaying cutoff of the transmission gate by the VNX signal until occurrence of horizontal line 10, thus precluding blanking of post equalizing pulses.