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    • 9. 发明授权
    • Synchronizing signal separating circuit for television video signal
processing
    • 用于电视视频信号处理的同步信号分离电路
    • US4081833A
    • 1978-03-28
    • US658021
    • 1976-02-13
    • Hideo Akiyama
    • Hideo Akiyama
    • H04N5/08
    • H04N5/08
    • A synchronizing pulse separating circuit provides synchronizing pulser from an incoming composite television signal wave including such a wave formed of switched plural individual television signals of differing array D.C. level. The pulse separating circuit employs keyed clamping circuitry to clamp the peak synchronizing levels of the incoming wave to a reference level, and clipping circuitry directly coupled to the clamping circuitry to provide output synchronizing pulses responsive to the clamped incoming, such pulses. The output synchronizing pulse train is also employed to key on the clamp circuit.
    • 同步脉冲分离电路从输入的复合电视信号波提供同步脉冲发生器,该复合电视信号波包括由不同阵列D.C.电平的切换的多个独立电视信号形成的波。 脉冲分离电路使用键控钳位电路将入射波的峰值同步电平钳位到参考电平,以及直接耦合到钳位电路的限幅电路,以响应于钳位的输入,这样的脉冲提供输出同步脉冲。 输出同步脉冲串也用于键入钳位电路。