| 摘要 |
PURPOSE:To prevent the gain in the range of waveform equalization of an error signal amplifier circuit from being dependent on ghost, by detecting the level of an output signal of the error signal amplifier circuit only for the waveform equalizing period. CONSTITUTION:An output signal of a video detection circuit 4 is applied to a synchronizing separation circuit 31, and a vertical synchronizing signal separated at the circuit 31 is applied to a reference timing signal forming circuit 32. A reference timing signal obtained at the output side of the circuit 32 is applied to a trigger terminal of a monostable multivibrator 33. A switch 30 is turned on with a pulse signal 33a obtained at the output of the monostable multivibrator 33. |
