公开(公告)号：US20080239105A1

公开(公告)日：2008-10-02

申请号：US11694291

申请日：2007-03-30

申请人： Weize Xu

发明人： Weize Xu

IPC分类号： H01L27/00 ,  H04N5/217 ,  H04N5/335

CPC分类号： H04N5/3745 ,  H04N5/3575 ,  H04N5/365 ,  H04N5/3658

摘要： A CMOS image sensor includes a photodiode for receiving incident light that is converted to a charge signal; a transfer mechanism for transferring the charge to a sensing node that converts the charge signal to an image voltage signal; and a sample-and-hold circuit. The sample-and-hold circuit includes a capacitor that receives the image voltage signal; and only one buffer amplifier that passes the image voltage signal to a differential amplifier. The buffer amplifier also receives a reset signal that is passed to the differential amplifier.

摘要翻译： CMOS图像传感器包括：光电二极管，用于接收转换成电荷信号的入射光; 用于将电荷转移到将电荷信号转换为图像电压信号的感测节点的传送机构; 和采样保持电路。 采样保持电路包括接收图像电压信号的电容器; 并且只有一个缓冲放大器将图像电压信号传递到差分放大器。 缓冲放大器还接收传递给差分放大器的复位信号。

公开(公告)号：US20080204567A1

公开(公告)日：2008-08-28

申请号：US11678293

申请日：2007-02-23

申请人： Weize Xu

发明人： Weize Xu

IPC分类号： H04N5/228

CPC分类号： H03F3/505 ,  H03F3/005 ,  H03F3/082 ,  H03F3/087 ,  H03F3/45475 ,  H03F3/45744 ,  H03F3/45968 ,  H03F2200/375 ,  H03F2203/45136 ,  H03F2203/45551 ,  H03F2203/45586 ,  H03F2203/45588 ,  H03F2203/45612 ,  H04N5/3575 ,  H04N5/374 ,  H04N5/378

摘要： An active pixel image sensor comprising: (a) a pixel array having a plurality of pixels, each pixel comprising: (i) a photosensitive region connected to a charge-to-voltage conversion region; and (ii) an amplifier connected to the charge-to-voltage conversion region; and (b) a sample and hold circuit connected to one or more pixels comprising: (i) two capacitors for receiving and storing a reset signal and an image signal; (ii) two buffer amplifiers for respectively receiving the reset signal and the image signal respectively from the two capacitors; and (iii) a reference generator circuit connected to an input of the buffer amplifiers for removing offset of the buffer amplifier.

摘要翻译： 一种有源像素图像传感器，包括：（a）具有多个像素的像素阵列，每个像素包括：（i）连接到电荷 - 电压转换区域的感光区域; 和（ii）连接到电荷 - 电压转换区的放大器; 和（b）连接到一个或多个像素的采样和保持电路，包括：（i）用于接收和存储复位信号和图像信号的两个电容器; （ii）两个缓冲放大器，用于分别从两个电容器接收复位信号和图像信号; 和（iii）参考发生器电路，连接到缓冲放大器的输入端，用于去除缓冲放大器的偏移。