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1. 发明授权

US4712143A Apparatus for monitoring a timebase compressed color video signal 失效
标题翻译：用于监视时基压缩彩色视频信号的装置
公开(公告)号：US4712143A
公开(公告)日：1987-12-08
申请号：US743984
申请日：1985-06-12
申请人： Hiroshi Kawakami , Kazuo Ishizaka
发明人： Hiroshi Kawakami , Kazuo Ishizaka
IPC分类号： H04N9/81 , H04N9/825 , H04N9/86 , H04N9/79
CPC分类号： H04N9/825
摘要： An apparatus for recording a color video signal in which a luminance signal and a chrominance signal are recorded on separate channels and at least two chrominance component signals are compressed in timebase and alternately arranged in turn to be recorded on one track as the chrominance signal is disclosed. This apparatus includes timebase compressing and expanding circuits provided respectively for the chrominance component signals and for producing timebase compressed chrominance component signals by writing the chrominance component signals by a first signal and by reading them by a second signal with the frequency integer times as high as that of the first signal and a coupling circuit for simultaneously supplying the chrominance component signals, which are being read out from the output terminals of the timebase compressing and expanding circuits by the second signal, to the input terminals of the timebase compressing and expanding circuits, whereby the timebase compressed chrominance component signals are written in the timebase compressing and expanding circuits by the second signal. In this case, when succeeding chrominance component signals are written in the timebase compressing and expanding circuits by the first signal, the timebase compressed chrominance component signals rewritten in the timebase compressing and expanding circuits are read out therefrom by the first signal so as to produce normal chrominance component signals.
摘要翻译：一种用于记录其中亮度信号和色度信号被记录在单独通道上的彩色视频信号和至少两个色度分量信号的装置在时基中被压缩，并且随着色度信号被公开而依次交替地被记录在一个磁道上。该装置包括分别为色度分量信号提供的时基压缩和扩展电路，并且通过将色度分量信号写入第一信号来产生时基压缩的色度分量信号，并通过用与第一信号相同的频率的整数倍的第二信号读取它们的第一信号的耦合电路和用于将由第二信号从时基压缩和扩展电路的输出端读出的色度分量信号同时提供给时基压缩和扩展电路的输入端的耦合电路，由此时基压缩色度分量信号通过第二信号写入时基压缩和扩展电路。在这种情况下，当通过第一信号将下一个色度分量信号写入时基压缩和扩展电路时，通过第一信号从时基压缩和扩展电路中重写的时基压缩色度分量信号被读出，从而产生正常色度分量信号。

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