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Automatic low frequency gain limited circuit for eliminating signal suppression in an A-C coupled video processing system
Automatic low frequency gain limited circuit for eliminating signal suppression in an A-C coupled video processing system
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机译:用于消除A-C耦合视频处理系统中信号抑制的自动低频增益限制电路
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摘要
A means of eliminating signal suppression in an A-C coupled video processing system by an automatic low frequency gain limiting circuit means. The low frequency gain limiting circuit means comprises a summing amplifier that simultaneously sums the original video pulses and inverted pulses of the low frequency pedestal portion of the video pulses with the detail information removed therefrom. The resulting gain limited output video voltage from the summing amplifier is confined within the linear dynamic range of the video processing system and comprises a compressed pedestal height that nevertheless has all the detail information thereon. The gain limited output video voltage is applied to a display driver.
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