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公开(公告)号：US20090128660A1
公开(公告)日：2009-05-21
申请号：US11942604
申请日：2007-11-19
申请人： Tiejun Dai , Sohei Manabe , Hongtao Yao , Jingzhou Zhang , Liping Deng
发明人： Tiejun Dai , Sohei Manabe , Hongtao Yao , Jingzhou Zhang , Liping Deng
CPC分类号： H04N5/14 , H01L31/1105 , H04N5/144 , H04N5/235 , H04N5/2357 , H04N5/3765
摘要： An apparatus for measuring the power frequency of a light source includes a photo-sensitive transistor, a modulators and a logic unit. The photo-sensitive transistor generates an electrical signal that is responsive to light incident thereon from the light source. The modulator generates a modulated signal based on the electrical signal that toggles at a rate substantially proportional to the power frequency of the light source. The logic unit is coupled to receive the modulated signal and determine its toggling frequency.
摘要翻译： 用于测量光源的功率频率的装置包括光敏晶体管，调制器和逻辑单元。 光敏晶体管产生响应于从光源入射到其上的光的电信号。 调制器基于电信号产生调制信号，该电信号以基本上与光源的功率频率成比例的速率切换。 逻辑单元被耦合以接收调制信号并确定其切换频率。
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公开(公告)号：US07847834B2
公开(公告)日：2010-12-07
申请号：US11942604
申请日：2007-11-19
申请人： Tiejun Dai , Sohei Manabe , Hongtao Yao , Jingzhou Zhang , Liping Deng
发明人： Tiejun Dai , Sohei Manabe , Hongtao Yao , Jingzhou Zhang , Liping Deng
IPC分类号： H04N9/73
CPC分类号： H04N5/14 , H01L31/1105 , H04N5/144 , H04N5/235 , H04N5/2357 , H04N5/3765
摘要： An apparatus for measuring the power frequency of a light source includes a photo-sensitive transistor, a modulators and a logic unit. The photo-sensitive transistor generates an electrical signal that is responsive to light incident thereon from the light source. The modulator generates a modulated signal based on the electrical signal that toggles at a rate substantially proportional to the power frequency of the light source. The logic unit is coupled to receive the modulated signal and determine its toggling frequency.
摘要翻译： 用于测量光源的功率频率的装置包括光敏晶体管，调制器和逻辑单元。 光敏晶体管产生响应于从光源入射到其上的光的电信号。 调制器基于电信号产生调制信号，该电信号以基本上与光源的功率频率成比例的速率切换。 逻辑单元被耦合以接收调制信号并确定其切换频率。
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