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1. 发明申请

US20120188449A1 VERTICAL SYNC SIGNAL SEPARATION APPARATUS AND METHOD THEREOF 审中-公开
标题翻译：垂直同步信号分离装置及其方法
公开(公告)号：US20120188449A1
公开(公告)日：2012-07-26
申请号：US13103109
申请日：2011-05-09
申请人： Wen-Yi Chen , Jau-Yih Lin , Pang-Chih Liu
发明人： Wen-Yi Chen , Jau-Yih Lin , Pang-Chih Liu
IPC分类号： H04N5/10
CPC分类号： H04N5/06
摘要： Vertical sync signal separation apparatus and method are provided. The vertical sync signal separation apparatus includes a parameter detecting unit, a threshold generating unit and a vertical sync signal generating unit. The parameter detecting unit measures a composite sync signal to obtain a maximum and a second maximum positive pulse width, and a maximum and a second maximum negative pulse width. The threshold generating unit outputs a positive pulse threshold based on the maximum and second maximum positive pulse width, and outputs a negative pulse threshold based on the maximum and second maximum negative pulse width. The vertical sync signal generating unit outputs a vertical sync signal by comparing the composite sync signal against the positive pulse threshold and the negative pulse threshold. As such, this apparatus can correctly separate a vertical sync signal from composite sync signals with different standards, thus increasing its supportability.
摘要翻译：提供垂直同步信号分离装置和方法。垂直同步信号分离装置包括参数检测单元，阈值生成单元和垂直同步信号生成单元。参数检测单元测量复合同步信号以获得最大和第二最大正脉冲宽度以及最大和第二最大负脉冲宽度。阈值生成单元基于最大和第二最大正脉冲宽度输出正脉冲阈值，并且基于最大和第二最大负脉冲宽度输出负脉冲阈值。垂直同步信号产生单元通过将复合同步信号与正脉冲阈值和负脉冲阈值进行比较来输出垂直同步信号。因此，该装置可以从不同标准的复合同步信号中正确地分离垂直同步信号，从而增加其可支持性。

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