Video signal and method therefor time axis altering circuit used in a
video tape recorder for recording a broadband video signal
    66.
    发明授权
    Video signal and method therefor time axis altering circuit used in a video tape recorder for recording a broadband video signal 失效
    用于记录宽带视频信号的录像机中使用的用于时间轴改变电路的视频信号及方法

    公开(公告)号:US4873582A

    公开(公告)日:1989-10-10

    申请号:US210167

    申请日:1988-06-21

    CPC分类号: H04N9/82 H04N9/7973 H04N9/81

    摘要: Disclosed is a magnetic recording-playback apparatus suitable for recording and reproducing a signal including a broad-band composite video signal and a method therefor. The broad-band signal is time-sliced into signals in two channels, and each divided signal is expanded on the time axis so that it is converted into a lower-band signal before being recorded on a magnetic tape. In the time axis expansion process, the vertical blanking signal and/or horizontal blanking signal is not expanded, whereby the divided video signals have a still lower frequency band.

    摘要翻译: 公开了适用于记录和再现包括宽带复合视频信号的信号的磁记录重放装置及其方法。 宽带信号在两个信道中被时分片分成信号,并且每个分频信号在时间轴上被扩展,使得它在被记录在磁带上之前被转换成低频带信号。 在时间轴扩展处理中,不扩展垂直消隐信号和/或水平消隐信号,从而分割的视频信号具有更低的频带。

    Method and apparatus for sampling and processing a video signal
    67.
    发明授权
    Method and apparatus for sampling and processing a video signal 失效
    用于对视频信号进行采样和处理的方法和装置

    公开(公告)号:US4772950A

    公开(公告)日:1988-09-20

    申请号:US658021

    申请日:1984-10-05

    CPC分类号: H04N5/932 H04N9/896

    摘要: A method and apparatus for sampling and processing a video signal having a time base fluctuation with sampling clock pulses produced from an oscillator which is instantaneously phase-synchronized with synchronizing information of the video signal. The synchronizing information is separated from the video signal by a separator and the oscillator is controlled to at least one of start and stop oscillation in accordance with the synchronizing information.

    摘要翻译: 一种用于采样和处理具有时基波动的视频信号的方法和装置,其中采样时钟脉冲由与视频信号的同步信息瞬时相位同步的振荡器产生。 通过分离器将同步信息与视频信号分离,并且根据同步信息将振荡器控制为起振和停止振荡中的至少一个。