| 摘要 |
PURPOSE:To remove completely the influence to the reproducing screen of the drop-out by interpolating the drop-out period in the base band signal completely with the signal before 1H regardless of the time delay between a RF signal and a base band signal which demodulates this. CONSTITUTION:A one-shot multivibrator 8 and an OR circuit 9 are added to the titled circuit, and the one-shot multivibrator 8 rises by the fall of a pulse signal P1 which is the output of a drop-out detecting device 3, and sends a pulse signal P2 which lasts for a constant time. Namely, the pulse signal P1 rises when the drop-out detecting device 3 detects the drop-out of an FM television signal S1, and falls at the end edge of the drop-out. Consequently, a pulse signal P3, which is the output signal of an OR circuit 9, goes to be the signal which lasts during the time to add the duration of the pulse signal P2 to the duration of the pulse signal P1.
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