Video disc player comprising clamping circuit for muse signal
    1.
    发明授权
    Video disc player comprising clamping circuit for muse signal 失效
    视频光盘播放器包括用于缪斯信号的钳位电路

    公开(公告)号:US5036404A

    公开(公告)日:1991-07-30

    申请号:US375306

    申请日:1989-07-03

    CPC分类号: H04N9/87 H04N9/797

    摘要: An FM-MUSE signal and a pilot signal are frequency-multiplexed, to be recorded on a video disc (D). In addition, a clamp level signal and an index signal are multiplexed on particular lines of a plurality of lines of the MUSE signal. The index signal is detected from the FM-MUSE signal reproduced from the video disc by a video disc player (100). Pulses of the reproduced pilot signal are counted, beginning at the time of this detection. Accordingly, the timing of generating the clamp level signal is specified, so that clamp pulses are generated. A clamping circuit (5) is provided in the video disc player, so that the clamp level signal is accurately clamped in response to the clamp pulse.