| 摘要 |
PURPOSE:To prevent the spark noises, the noises due to the incomplete compensation, etc. from appearing on a reproduced screen by replacing a signal of a 1H period containing a drop-out with a 1H preceding signal. CONSTITUTION:A switching circuit 15 is actuated by a drop-out detecting circuit 14 which detected a drop-out contained in a reproduced signal of a video tape recorder. Then the reproduced signal which is already delayed by a 1H period by the 1st delay circuit 11 is delayed again by a 1H period by the 2nd delay circuit 12. Thus the 1H period including the drop-out is totally replaced and therefore a phase difference produced between periods before and after replacement, the spark noises due to an action delay, etc. are all produced within a flyback time. Thus such spark noises, the noises due to the incomplete compensation, etc. give no evil effect to a reproduced screen. In this way, the satisfactory drop- out compensation is always ensured. |
