| 摘要 |
PURPOSE:To remove the cross talk failure between adjacent tracks at VTR reproduced chrominance signal, by the constitution that the deviation value between the delayed signal and the signal not delayed can be kept constant. CONSTITUTION:The addition signal Su between the delay signal by a variable delay line 5 and an input signal Si, causes an output with the delay time shifted and input to a burst pickup circuit 9 via an amplifier 8. The output of the burst pickup circuit 9 is made to DC via an amplifying detection circuit 10, sample hold circuit 11 and low-pass filter 12, and it is compared with the reference voltage VS at a comparator 13, the compared output, that is, an error voltage is given to a variable delay line 5 as a delay time control signal via an amplifier 14 to control the delay time. |
