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    • 72. 发明授权
    • Video signal reproducing apparatus with time base corrector
    • 具有时基校正器的视频信号再现装置
    • US5285288A
    • 1994-02-08
    • US570431
    • 1990-08-21
    • Takao TakahashiHiroshi Okada
    • Takao TakahashiHiroshi Okada
    • H04N9/896H04N9/89
    • H04N9/89
    • In an apparatus for reproducing, from a record medium, a recorded video signal including an FM-modulated luminance signal and a chroma signal which is down-converted from an original frequency band; the FM-modulated luminance signal reproduced from the record medium is demodulated and than the time-base of the demodulated luminance signal is corrected, whereas, the time-base of the down-converted chroma signal reproduced from the record medium is corrected and then the reproduced chroma signal is up-converted to its original frequency band. A servo circuit, for example, for controlling the rotary drum motor and/or the capstan motor of a video tape recording/reproducing apparatus (VTR) during a reproducing operation, is controlled in response to a phase difference between write and read addresses applied to a memory of the time-base corrector so that such memory can be provided with a relatively small capacity.
    • 在用于从记录介质再现包括FM调制亮度信号和从原始频带下变频的色度信号的记录视频信号的装置中; 解调从记录介质再现的FM调制的亮度信号,并且比解调的亮度信号的时基被校正,而从记录介质再现的下变频色度信号的时基被校正, 再现的色度信号被上变频到其原始频带。 例如,用于在再现操作期间用于控制录像带记录/再现设备(VTR)的旋转磁鼓电动机和/或主导轴电动机的伺服电路被响应于写入和读取地址之间的相位差 时基校正器的存储器,使得这种存储器可以被提供相对较小的容量。