| 摘要 |
Under certain conditions a video disc player can be responsive to externally applied interference signals to provide a defect in the display of the information recovered from the disc. Apparatus is provided which reduces the influence of the extraneous signal in the playback display. The apparatus includes a detection threshold level setting circuit which relies on the amplitude of the recovered signal during the recurring sync signals to establish the threshold at which corrective action will be taken in the player.
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