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1. 发明授权

US06441871B1 Method for correcting amplitude of synchronizing signal of composite video signal and device therefor 失效
标题翻译：用于校正复合视频信号的同步信号幅度的方法及其装置
公开(公告)号：US06441871B1
公开(公告)日：2002-08-27
申请号：US09385018
申请日：1999-08-30
申请人： Masahiro Hori , Hiroaki Kubo
发明人： Masahiro Hori , Hiroaki Kubo
IPC分类号： H04N518
CPC分类号： H04N5/20 , H04N5/08
摘要： A method and device are provided for correcting an amplitude of a synchronizing signal. A pedestal voltage, Vped, (i.e., a reference level) may be detected which repetitively occurs at the same period as a synchronizing signal of an input composite video signal. A reference voltage, Vsync, may be generated corresponding to an amplitude of the synchronizing signal which meets a standard for the input composite video signal. A DC voltage, Vh, may be generated having a voltage level corresponding to a tip or peak level of the synchronizing signal which meets the standard for the input composite video signal based on the pedestal voltage, Vped, and the reference voltage, Vsync. The DC voltage Vh and the composite video signal may be switchably output in synchronism with the synchronizing signal extracted from the composite video signal.
摘要翻译：提供了一种用于校正同步信号的振幅的方法和装置。可以检测出与输入的复合视频信号的同步信号相同的周期重复出现的基准电压Vped（即，基准电平）。可以对应于符合输入的复合视频信号的标准的同步信号的幅度产生参考电压Vsync。可产生直流电压Vh，具有对应于同步信号的尖端或峰值电平的电压电平，该同步信号基于基座电压Vped和参考电压Vsync满足输入复合视频信号的标准。可以与从复合视频信号提取的同步信号同步地切换输出直流电压Vh和复合视频信号。

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