首页> 外国专利> 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

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

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.
机译:一种通过自动低频增益限制电路装置消除A-C耦合视频处理系统中的信号抑制的装置。低频增益限制电路装置包括求和放大器,该求和放大器同时对原始视频脉冲和视频脉冲的低频基座部分的反相脉冲求和,并从中去除了细节信息。来自求和放大器的所得的增益受限的输出视频电压被限制在视频处理系统的线性动态范围内,并且包括压缩的基座高度,但是其上具有所有详细信息。增益受限的输出视频电压施加到显示驱动器。

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