Television synchronizing signal processing circuit.

摘要

A television synchronizing signal processing circuit includes a reproduction/demodulation circuit (13) for repetitively reading a video signal corresponding to one field from a video signal recording medium and demodulating the video signal and for separating a synchronizing signal from a reproduced/demodulated signal, a first delay circuit (14) for permitting the video signal of the reproduced/de- nadulated signal which is supplied for every other field from the reproduction/demodulation circuit (13) to be delayed by a time corresponding to one half the period H of a horizontal synchronizing signal, a second delay circuit (15) for delaying a vertical synchronizing signal of the synchronizing signal which is supplied from the reproduction/demodulation circuit (13), and a waveform synthesizing circuit for synthesizing output signals from the first and second delay circuits (14, 15) to produce a composite video signal. In the processing circuit, the second delay circuit (15) has a variable time TD which is variable within a range of