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    • 3. 发明授权
    • Comb filter employing a charge transfer device with plural mutually
proportioned signal charge inputs
    • 梳状滤波器采用具有多个相互成比例的信号电荷输入的电荷转移装置
    • US4217605A
    • 1980-08-12
    • US930379
    • 1978-08-02
    • James E. CarnesRobert H. DawsonWalter F. Kosonocky
    • James E. CarnesRobert H. DawsonWalter F. Kosonocky
    • H04N9/67H01L27/105H03H15/00H03H15/02H04N9/78H04N9/535
    • H01L27/1057H03H15/00H03H15/02H04N9/78
    • A comb filter comprising a charge transfer device (CTD) structure for separating frequency interleaved luminance and chrominance components of a composite color television signal directly within the CTD structure. The CTD structure has first and second pairs of input sections of substantially identical geometry, one input section of the second pair being preceded by a signal inverter. Signal charge as applied to the first and second input pairs are delayed such that signal charge from the first input pair exhibits a 1H delay relative to signal charge from the second input pair, when the signal charge from the respective input pairs are combined with each other. A first charge summing well combines mutually in-phase signal charge at multiples of the line scanning frequency from the first and second inputs to provide a combed luminance signal charge component, while a second well combines mutually inverted or out-of-phase signal charge at these frequencies from the first and second inputs to provide a combed chrominance signal charge component.
    • 一种梳状滤波器,包括电荷转移装置(CTD)结构,用于直接在CTD结构内分离复合彩色电视信号的频率交错亮度和色度分量。 CTD结构具有基本相同几何形状的第一和第二对输入部分,第二对的一个输入部分在信号反相器之前。 当来自相应输入对的信号电荷彼此组合时,施加到第一和第二输入对的信号电荷被延迟使得来自第一输入对的信号电荷相对于来自第二输入对的信号电荷显示1H延迟 。 第一电荷求和井将来自第一和第二输入的线扫描频率的倍数处的相互同相信号电荷组合以提供精梳亮度信号电荷分量,而第二阱将相互反相或异相信号电荷组合在 来自第一和第二输入的这些频率以提供精梳色度信号电荷分量。