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2.发明公开System and method for flicker DC offset detection and correction 有权系统与Verfahren zur Flimmergleichstrom-Offseterkennung und -korrektur
公开(公告)号：EP1944967A3
公开(公告)日：2010-11-17
申请号：EP07150031.8
申请日：2007-12-14
CPC分类号： H04N5/2357
摘要： The present disclosure provides a method for detecting flicker DC voltage offset. The method includes receiving an output signal of an image sensor, the output signal comprising a reference signal and an image signal, and generating a combined signal by combining the image signal with a peak flicker DC voltage signal during a first time period. The method also includes performing an auto zero function in an auto zeroing comparator during the first time period between the reference signal and the combined signal and comparing the reference signal and the image signal with the auto zeroing comparator during a second time period subsequent to the first time period. The method further include storing a first charge corresponding to the image signal during a second time period and storing a second charge corresponding to a current peak flicker DC. voltage signal. The method also includes comparing the image signal to the current peak flicker DC voltage signal, and producing the greater of the image signal and the stored peak flicker DC voltage signal as the peak flicker DC voltage signal.
摘要翻译： 本公开提供了一种用于检测闪烁DC电压偏移的方法。 所述方法包括：接收图像传感器的输出信号，所述输出信号包括参考信号和图像信号，以及通过在第一时间段内组合所述图像信号与峰值闪烁DC电压信号来产生组合信号。 该方法还包括在参考信号和组合信号之间的第一时间段期间在自动归零比较器中执行自动归零功能，并且在第一个时间段之后的第二时间段内将参考信号和图像信号与自动调零比较器进行比较 时间段。 该方法还包括在第二时间段期间存储对应于图像信号的第一电荷并且存储对应于当前峰值闪烁DC的第二电荷。 电压信号。 该方法还包括将图像信号与当前峰值闪烁直流电压信号进行比较，并产生较大的图像信号和存储的峰值闪烁直流电压信号作为峰值闪烁直流电压信号。
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3.发明公开
公开(公告)号：EP1944967A2
公开(公告)日：2008-07-16
申请号：EP07150031.8
申请日：2007-12-14
IPC分类号： H04N5/235
CPC分类号： H04N5/2357
摘要： The present disclosure provides a method for detecting flicker DC voltage offset. The method includes receiving an output signal of an image sensor, the output signal comprising a reference signal and an image signal, and generating a combined signal by combining the image signal with a peak flicker DC voltage signal during a first time period. The method also includes performing an auto zero function in an auto zeroing comparator during the first time period between the reference signal and the combined signal and comparing the reference signal and the image signal with the auto zeroing comparator during a second time period subsequent to the first time period. The method further include storing a first charge corresponding to the image signal during a second time period and storing a second charge corresponding to a current peak flicker DC. voltage signal. The method also includes comparing the image signal to the current peak flicker DC voltage signal, and producing the greater of the image signal and the stored peak flicker DC voltage signal as the peak flicker DC voltage signal.
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