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1. 发明授权

US6166766A Sensing circuit for capturing a pixel signal 失效
标题翻译：用于捕获像素信号的感测电路
公开(公告)号：US6166766A
公开(公告)日：2000-12-26
申请号：US929125
申请日：1997-09-03
申请人： Kendall G. Moore , Frederic B. Shapiro , Deborah J. Beckwith , Michael W. Hodel
发明人： Kendall G. Moore , Frederic B. Shapiro , Deborah J. Beckwith , Michael W. Hodel
IPC分类号： G06T1/00 , H04N5/217
CPC分类号： H04N5/3575 , H04N5/3658 , H04N5/378
摘要： A sensing circuit (202) uses correlated double sampling to sample a first pixel signal of a pixel stream (V.sub.PIXEL) at two different times to produce a dark signal and a light signal on two capacitors (310, 314). The dark and light signals are amplified in an amplifier (302) to produce a differential output signal (V.sub.PP -V.sub.PN) proportional to their difference. While the samples of the first pixel signal are being amplified, a second pixel signal is double-sampled to produce dark and light signals on two other capacitors (312, 316) for amplifying in the same amplifier. The period of the pixel signal is divided into time slots (T.sub.1 -T.sub.16) by a clocked oscillator (52). Programming signals (PROG1, PROG2) control the time slots in which sampling control pulses (V.sub.S1, V.sub.S2) are generated.
摘要翻译：感测电路（202）使用相关双采样在两个不同时间对像素流（VPIXEL）的第一像素信号进行采样，以在两个电容器（310,314）上产生暗信号和光信号。暗信号和光信号在放大器（302）中被放大，以产生与它们的差成比例的差分输出信号（VPP-VPN）。当第一像素信号的样本被放大时，第二像素信号被双采样以在另外两个电容器（312,316）上产生暗和光信号，以在同一放大器中进行放大。像素信号的周期由时钟振荡器（52）分为时隙（T1-T16）。编程信号（PROG1，PROG2）控制产生采样控制脉冲（VS1，VS2）的时隙。

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