| 摘要 |
PURPOSE:To avoid noise due to dropout from being left on a screen, by providing a circuit delaying an FM video signal for a longer time than a dropout detection time. CONSTITUTION:An FM video reproducing signal is inputted to a terminal 1 and applied to a delay circuit 8 and a dropout detection circuit 2 respectively. The amount of delay in signals of the delay circuit 8 is set larger than the dropout detection time. When no dropout exists, a switch 7 is turned off and only a signal from the circuit 8 is inputted. If dropout exists, a signal from an 1H delay line 5 and the signal from the circuit 8 are inputted to an adder 3. |
