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    • 7. 发明公开
    • Video signal recording apparatus having overlap function
    • Videosignalaufzeichnungsvorrichtung mitÜberlappfunktion
    • EP0758185A2
    • 1997-02-12
    • EP96117353.1
    • 1991-11-19
    • CANON KABUSHIKI KAISHA
    • Nagasawa, KenichiTakahashi, KojiSato, Chikara
    • H04N5/77
    • H04N5/2621G11B27/024H04N5/77H04N5/772H04N9/8227Y10S358/906
    • A video signal recording apparatus has an overlap function of gradually switching a video signal read from a memory (10) capable of storing a one-picture portion of an input video signal to another video signal during a first predetermined time period. The apparatus can effectively utilize the overlap function with a simple operation by operating a manual operation member for setting the apparatus to an overlap mode for operating the overlap function when a recording operation is not performed, and thereby confirming an image stored in the memory. When the apparatus is in an interval recording mode in which a recording means periodically operates during every second predetermined time period, the first and second predetermined time periods are determined so that the second predetermined time period is longer than the first predetermined time period when the apparatus is set to the overlap mode. Recording of an imperfect image is thereby prevented.
    • 视频信号记录装置具有在第一预定时间段期间逐渐切换从能够将输入视频信号的一个图像部分存储到另一视频信号的存储器(10)读取的视频信号的重叠功能。 该装置可以通过操作手动操作构件来有效地利用重叠功能,以便在不执行记录操作时将装置设置为用于操作重叠功能的重叠模式,从而确认存储在存储器中的图像。 当装置处于其中记录装置在每第二预定时间段期间周期性地操作的间隔记录模式时,确定第一和第二预定时间段,使得第二预定时间段比第一预定时间段长,当装置 被设置为重叠模式。 从而防止了不完美图像的记录。