公开(公告)号：US07593050B2

公开(公告)日：2009-09-22

申请号：US11363130

申请日：2006-02-27

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N3/14 ,  H04N5/335 ,  H01L31/062 ,  H01L31/113

CPC classification number: H04N5/357 ,  H04N5/3742 ,  H04N5/3765

Abstract: An image sensor includes a plurality of pixels for capturing an image; a sample and hold circuit array having a plurality of units for receiving signals from the plurality of pixels representing the captured image; a decoder for selecting each of the units of the sample and hold circuit array for output; and a delay circuit that includes an adjustable time delay to the decoder for compensating for time delays.

Abstract translation: 图像传感器包括用于捕获图像的多个像素; 采样和保持电路阵列，具有多个单元，用于从表示所捕获图像的多个像素接收信号; 用于选择所述采样和保持电路阵列中的每个单元用于输出的解码器; 以及延迟电路，其包括到解码器的可调时间延迟以补偿时间延迟。

公开(公告)号：US20080169845A1

公开(公告)日：2008-07-17

申请号：US11622777

申请日：2007-01-12

Applicant: Weize Xu

Inventor： Weize Xu

IPC: G11C27/02

CPC classification number: H04N5/378 ,  H04N5/3575 ,  H04N5/363

Abstract: A CMOS image sensor includes a photosensitive region for collecting charge in response to incident light; a charge-to-voltage mechanism for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying the voltage; a sample and hold circuit includes (i) a first capacitor one for receiving the voltage and a second capacitor for receiving a reset level; a first bus for receiving the voltage from the first capacitor and a second bus for receiving the reset level from the second capacitor; a differential difference amplifier for receiving the image voltage and the reset level and for determining a difference level between the image voltage and the reset level and for removing offset of the amplifier; and first and second switches respectively connected to the first and second bus for providing an electrical path for removing charge from each bus.

Abstract translation: CMOS图像传感器包括用于响应入射光收集电荷的光敏区域; 用于从光敏区域接收电荷并将电荷转换成电压的电荷 - 电压机构; 用于接收和放大电压的放大器; 采样和保持电路包括（i）用于接收电压的第一电容器和用于接收复位电平的第二电容器; 用于从第一电容器接收电压的第一总线和用于从第二电容器接收复位电平的第二总线; 用于接收图像电压和复位电平并用于确定图像电压和复位电平之间的差电平并用于去除放大器的偏移的差分差分放大器; 以及分别连接到第一和第二总线的第一和第二开关，用于提供用于从每个总线去除电荷的电路径。

公开(公告)号：US06169430A

公开(公告)日：2001-01-02

申请号：US09059966

申请日：1998-04-14

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H03K300

CPC classification number: H03F3/72 ,  H03F3/505

Abstract: A CMOS imager is arranged in a plurality of rows and columns with a gain compensation circuit supplied for each of the column. The gain compensation circuit has a first source follower circuit that employs majority carriers of a first polarity yielding a first voltage gain, and a second source follower circuit employing majority carriers of second polarity opposite the first polarity yielding a voltage gain that is essentially the opposite of the first voltage gain variation as compared to the input voltage. The input to the second source follower circuit that is electrically coupled to the output of the second source follower circuit resulting in a gain compensation between the first and second source follower circuits. A selection circuit is configured to enable the gain compensation circuit upon activation of a column select signal.

Abstract translation: CMOS成像器被布置在具有为每个列提供的增益补偿电路的多个行和列中。 所述增益补偿电路具有第一源极跟随器电路，该第一源极跟随器电路使用产生第一电压增益的第一极性的多数载流子，以及使用与第一极性相反的第二极性的多数载流子的第二源极跟随器电路，产生与第一极性相反的电压增益 与输入电压相比，第一电压增益变化。 与第二源极跟随器电路的输出电耦合的第二源极跟随器电路的输入，从而在第一和第二源极跟随器电路之间产生增益补偿。 选择电路被配置为在激活列选择信号时启用增益补偿电路。

公开(公告)号：US07385636B2

公开(公告)日：2008-06-10

申请号：US10836884

申请日：2004-04-30

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N5/217

CPC classification number: H04N5/361 ,  H04N5/3575 ,  H04N5/3742

Abstract: An image sensor includes a plurality of pixels for capturing incident light that is converted to a signal representing an image; wherein noise is combined with a signal representing both the image and a reset level; a plurality of dark reference pixels that generate noise that substantially correspond or equally correspond to the noise in the image and reset level; and a sample and hold circuit that reads out the image signal and cancels or substantially cancels out the noise from the image signal and reset level by canceling the noise from image and reset level with the noise generated from the dark reference pixels.

Abstract translation: 图像传感器包括用于捕获被转换成表示图像的信号的入射光的多个像素; 其中噪声与表示图像和复位电平的信号组合; 多个暗参考像素，其产生基本上对应于或等同地对应于图像中的噪声和复位电平的噪声; 以及采样保持电路，通过从暗参考像素产生的噪声消除来自图像的噪声和复位电平，读出图像信号并且抵消或基本上消除来自图像信号和复位电平的噪声。

公开(公告)号：US20070257284A1

公开(公告)日：2007-11-08

申请号：US11416055

申请日：2006-05-02

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H01L21/00

CPC classification number: H04N5/353 ,  H04N5/3653 ,  H04N5/378

Abstract: An image sensor includes a photosensitive region that accumulates charge corresponding to received incident light; a transfer gate for transferring all or a portion of the charge from the photosensitive region; a voltage supply having an increasing voltage over time that is applied to the transfer gate; a floating diffusion for receiving the all or a portion of the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying a signal from the floating diffusion; a pulse detector for detecting a voltage pulse from the amplifier; and a counter for counting clock cycles between initiation of the increasing voltage until a signal is received from the detector which indicates initiation of charge transfer from the photosensitive region to the floating diffusion.

Abstract translation: 图像传感器包括对与所接收的入射光相对应的电荷累积的感光区域; 用于从感光区域传送电荷的全部或一部分的转移门; 具有随着时间的增加的电压施加到传输门的电压源; 用于从光敏区域接收全部或一部分电荷并将电荷转换成电压的浮动扩散; 用于接收和放大来自浮动扩散的信号的放大器; 用于检测来自放大器的电压脉冲的脉冲检测器; 以及计数器，用于计数在增加的电压的起始之间的时钟周期，直到从检测器接收到指示从感光区域到浮动扩散的电荷转移的启动的信号。

公开(公告)号：US20070188640A1

公开(公告)日：2007-08-16

申请号：US11354444

申请日：2006-02-15

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N3/14 ,  H04N5/335

CPC classification number: H04N5/37455 ,  H04N5/35527 ,  H04N5/365 ,  H04N5/3745

Abstract: An image sensor includes a photosensitive region that accumulates charge corresponding to received incident light; a transfer gate for transferring charge from the photosensitive region; a voltage supply having an increasing voltage over time; a floating diffusion for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying a signal from the floating diffusion; a comparator for comparing a voltage from the amplifier to a reference voltage; and a counter for counting clock cycles between initiation of the increasing voltage until a signal is received from the comparator indicating charge transfer from the photosensitive region to the floating diffusion; wherein a digital signal is generated that represents an unfilled capacity of the photosensitive region.

Abstract translation: 图像传感器包括对与所接收的入射光相对应的电荷累积的感光区域; 用于从光敏区转移电荷的转移门; 电压随时间增加的电压; 用于从光敏区域接收电荷并将电荷转换成电压的浮动扩散; 用于接收和放大来自浮动扩散的信号的放大器; 比较器，用于将来自放大器的电压与参考电压进行比较; 以及计数器，用于计数在增加的电压的起始之间的时钟周期，直到从比较器接收到指示从感光区域到浮动扩散的电荷转移的信号; 其中产生表示感光区域的未填充容量的数字信号。

公开(公告)号：US20060273240A1

公开(公告)日：2006-12-07

申请号：US11398514

申请日：2006-04-05

Applicant: R. Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

Inventor： R. Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

IPC: H01L27/00

CPC classification number: H04N5/37457 ,  H04N5/365

Abstract: A method of making an image sensor, the method includes the steps of providing a plurality of pixels each with a photodetector; providing an amplifier that is shared between the plurality of photodetectors; providing a transfer gate associated with each photodetector; providing a charge-to-voltage conversion region that is shared between the plurality of photodetectors; determining a capacitance between each transfer gate and the charge-to-voltage conversion region; and modifying the capacitance to be substantially the same by altering a physical structure within one or more pixels.

Abstract translation: 一种制作图像传感器的方法，所述方法包括以下步骤：提供多个像素，每个像素具有光电检测器; 提供在所述多个光电检测器之间共享的放大器; 提供与每个光电检测器相关联的传送门; 提供在所述多个光电检测器之间共享的电荷 - 电压转换区域; 确定每个转移栅极和电荷 - 电压转换区域之间的电容; 并且通过改变一个或多个像素内的物理结构来将电容修改为基本相同。

公开(公告)号：US20060203114A1

公开(公告)日：2006-09-14

申请号：US11075431

申请日：2005-03-08

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N5/335 ,  H04N3/14 ,  H01L31/113 ,  H01L31/062

CPC classification number: H01L27/14609 ,  H04N5/3741

Abstract: A CMOS image sensor includes a plurality of pixels defining an imaging area each pixel includes a photosensitive area that converts incident light into a charge; a first transistor having a transfer gate that transfers charge from the photosensitive area to a charge-to-voltage region; a second transistor that resets the voltage of the charge-to-voltage region; a third transistor that amplifies voltage from the charge-to-voltage region; and a select mechanism positioned outside the imaging area on the image sensor that selects a predefined number of pixels for readout from the third transistor.

Abstract translation: CMOS图像传感器包括限定成像区域的多个像素，每个像素包括将入射光转换成电荷的感光区域; 第一晶体管，其具有将电荷从感光区域转移到电荷至电压区域的转移栅极; 第二晶体管，其复位所述电荷至电压区域的电压; 放大从电荷到电压区域的电压的第三晶体管; 以及位于图像传感器上的成像区域外部的选择机构，其选择用于从第三晶体管读出的预定数量的像素。

公开(公告)号：US20050243194A1

公开(公告)日：2005-11-03

申请号：US10836884

申请日：2004-04-30

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N5/357 ,  H04N5/374 ,  H04N5/378 ,  H04N5/217

CPC classification number: H04N5/361 ,  H04N5/3575 ,  H04N5/3742

Abstract: An image sensor includes a plurality of pixels for capturing incident light that is converted to a signal representing an image; wherein noise is combined with a signal representing both the image and a reset level; a plurality of dark reference pixels that generate noise that substantially correspond or equally correspond to the noise in the image and reset level; and a sample and hold circuit that reads out the image signal and cancels or substantially cancels out the noise from the image signal and reset level by canceling the noise from image and reset level with the noise generated from the dark reference pixels.

Abstract translation: 图像传感器包括用于捕获被转换成表示图像的信号的入射光的多个像素; 其中噪声与表示图像和复位电平的信号组合; 多个暗参考像素，其产生基本上对应于或等同地对应于图像中的噪声和复位电平的噪声; 以及采样保持电路，通过从暗参考像素产生的噪声消除来自图像的噪声和复位电平，读出图像信号并且抵消或基本上消除来自图像信号和复位电平的噪声。

公开(公告)号：US06421085B1

公开(公告)日：2002-07-16

申请号：US09059814

申请日：1998-04-14

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N314

CPC classification number: H04N5/3745 ,  H04N5/3575 ,  H04N5/3658

Abstract: A correlated double sampling unit within a CMOS imager employs an image sensor having a plurality of photodetectors arranged in a series of rows and columns with a row addressing circuit, a column addressing circuit, a first sample and hold circuit allocated for each of the columns, a transfer circuit operatively connecting each of the columns to the first sample and hold circuit for each of the columns, and a plurality of second sample and hold circuits, each of the second sample and hold circuits being operatively connected to a subset of the first sample and hold circuits.

Abstract translation: CMOS成像器内的相关双采样单元采用图像传感器，该图像传感器具有布置成一系列行和列的多个光电检测器，具有行寻址电路，列寻址电路，为每个列分配的第一采样和保持电路， 将每个列操作地连接到每个列的第一采样和保持电路的传输电路和多个第二采样和保持电路，每个第二采样和保持电路可操作地连接到第一采样的子集 并保持电路。