Television system for transmitting auxiliary information during the vertical blanking interval
    31.
    发明授权
    Television system for transmitting auxiliary information during the vertical blanking interval 失效
    用于在垂直隔离间隔期间发送辅助信息的电视系统

    公开(公告)号:US3576391A

    公开(公告)日:1971-04-27

    申请号:US3576391D

    申请日:1968-06-26

    Applicant: RCA CORP

    CPC classification number: H04N7/087

    Abstract: Gating and delay apparatus for rearranging the position of auxiliary message information to be transmitted together with primary program information over network distribution facilities during predetermined portions of the vertical blanking interval of a composite television signal, so as to minimize undesirable brightness modulation of the vertical retrace lines at the receiver''s primary program image reproducer.

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