VIDEO SIGNAL RECORDING AND REPRODUCING DEVICE

PROBLEM TO BE SOLVED: To provide a drop out pulse whose pulse width is not fluctuated by the amplitude of a reproduced RF signal concerning a method for preparing a drop out pulse being a video signal lacking part at VTR with a special reproducing device. SOLUTION: This device is provided with an envelope detecting circuit 1 detecting the envelopes of the reproduced RF signal, a first peak detecting circuit 2 detecting the highest potential of a wave height out of a reference potential concerning (b) being the output signal of this circuit 1, a second peak detecting circuit 3 detecting the lowest potential of the wave height out of the reference potential concerning (b) being the output signal of the circuit 1, an attenuator 4 attenuating the outputs of the circuits 2 and 3, and a comparator 5 to which the output of the circuit 1 is inputted as an inverted input and the output of the attenuator 4 as a non-inverting input. A drop out detecting pulse C having no fluctuation of the pulse width with respect to that of the input amplitude of the reproduced RF signal is outputted by this.