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    Readout circuitry to mitigate column fixed pattern noise of an image sensor
    91.
    发明授权
    Readout circuitry to mitigate column fixed pattern noise of an image sensor 有权

    公开(公告)号：US09819890B2

    公开(公告)日：2017-11-14

    申请号：US14828404

    申请日：2015-08-17

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Rui Wang ,  Le Huang ,  Tianjia Sun ,  Tiejun Dai

    IPC: H04N5/378 ,  H04N5/365

    CPC classification number: H04N5/378 ,  H04N5/365

    Abstract: Techniques and mechanisms to mitigate fixed pattern noise in image sensor data. In an embodiment, readout circuitry includes an adaptive analog-to-digital converter (ADC) comprising a differential amplifier and a feedback path coupled across the differential amplifier, where the ADC is to receive a ramp signal, a control signal associated with a transition rate of the ramp signal, and an analog signal generated by one or more pixels. In another embodiment, the feedback path and/or one or more other circuit elements coupled to the differential amplifier are configured, based on the control signal, to provide one of multiple loop gains with the differential amplifier. The ADC provides a digital output to determine a comparison based on the ramp signal and the analog signal.

    IMAGE SENSOR WITH FAST INTRA-FRAME FOCUS
    92.
    发明申请
    IMAGE SENSOR WITH FAST INTRA-FRAME FOCUS 审中-公开

    公开(公告)号：US20160373644A1

    公开(公告)日：2016-12-22

    申请号：US15256368

    申请日：2016-09-02

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Tiejun Dai ,  Eiichi Funatsu ,  Donghui Wu ,  Zheng Yang ,  Xiao Xie

    IPC: H04N5/232 ,  H04N5/378 ,  H04N5/243

    CPC classification number: H04N5/23212 ,  H04N5/243 ,  H04N5/3765 ,  H04N5/378

    Abstract: A method of focusing an image sensor includes scanning a first portion of an image frame from an image sensor a first time at a first rate to produce first focus data. A second portion of the image frame from the image sensor is scanned at a second rate to read image data from the second portion. The first rate is greater than the second rate. The first portion of the image frame is scanned a second time at the first rate to produce second focus data. The first focus data and the second focus data are compared, and the focus of a lens is adjusted in response to the comparison of the first focus data and the second focus data.

    Shared terminal of an image sensor system for transferring image data and control signals
    93.
    发明授权
    Shared terminal of an image sensor system for transferring image data and control signals 有权
    用于传送图像数据和控制信号的图像传感器系统的共享终端

    公开(公告)号：US09319603B2

    公开(公告)日：2016-04-19

    申请号：US14543483

    申请日：2014-11-17

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Tiejun Dai ,  Junzhao Lei

    IPC: H04N5/335 ,  H04N5/232 ,  H04N5/378 ,  H04N5/369 ,  H01L27/146

    CPC classification number: H04N5/335 ,  H01L27/14601 ,  H04N5/23241 ,  H04N5/369 ,  H04N5/378

    Abstract: An image sensor system includes an image sensor and a host controller. The image sensor includes a power input terminal, a data terminal, a clock input terminal, and a ground terminal. The host controller is coupled to the power input terminal to provide power to the image sensor, the data terminal to receive analog image data from the image sensor, the clock input terminal to provide a clock signal to the image sensor, and the ground terminal. The ground terminal serves as a common reference between the image sensor and one or more circuits of the host controller. The system also includes logic that is configured to transfer the analog image data from the image sensor to the host controller through the data terminal of the image sensor and to transfer one or more digital control signals between the image sensor and the host controller through the data terminal.

    Abstract translation: 图像传感器系统包括图像传感器和主机控制器。 图像传感器包括电源输入端子，数据端子，时钟输入端子和接地端子。 主机控制器耦合到电源输入端以向图像传感器提供电力，数据终端接收来自图像传感器的模拟图像数据，时钟输入端子以向图像传感器和接地端子提供时钟信号。 接地端子用作图像传感器和主机控制器的一个或多个电路之间的公共参考。 该系统还包括被配置为通过图像传感器的数据端将模拟图像数据从图像传感器传送到主机控制器并且通过数据传送图像传感器和主机控制器之间的一个或多个数字控制信号的逻辑 终奌站。

    CALIBRATION CIRCUITRY AND METHOD FOR A TIME OF FLIGHT IMAGING SYSTEM
    95.
    发明申请
    CALIBRATION CIRCUITRY AND METHOD FOR A TIME OF FLIGHT IMAGING SYSTEM 有权
    用于飞行成像系统时间的校准电路和方法

    公开(公告)号：US20160061941A1

    公开(公告)日：2016-03-03

    申请号：US14473803

    申请日：2014-08-29

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Jian Guo ,  Rui Wang ,  Tiejun Dai

    IPC: G01S7/497 ,  G01S17/08 ,  G01S7/487

    CPC classification number: G01S7/497 ,  G01S7/483 ,  G01S17/89 ,  G06F3/017

    Abstract: A time of flight imaging system includes a light source coupled to emit light pulses to an object in response a light source modulation signal generated in response to a reference modulation signal. Each pixel cell of a time of flight pixel cell array is coupled to sense light pulses reflected from the object in response a pixel modulation signal. A programmable pixel delay line circuit is coupled to generate the pixel modulation signal with a variable pixel delay programmed in response to a pixel programming signal. A control circuit is coupled to receive pixel information from the time of flight pixel array representative of the sensed reflected light pulses. The control circuit is coupled to vary the pixel programming signal during a calibration mode to synchronize the light pulses emitted from the light source with the pulses of the pixel modulation signal.

    Abstract translation: 飞行时间成像系统包括耦合以响应于参考调制信号而产生的光源调制信号而向对象发射光脉冲的光源。 飞行时间像素单元阵列的每个像素单元耦合以响应于像素调制信号来感测从物体反射的光脉冲。 耦合可编程像素延迟线电路以响应于像素编程信号编程的可变像素延迟来产生像素调制信号。 控制电路被耦合以从代表所感测的反射光脉冲的飞行时间像素阵列接收像素信息。 控制电路被耦合以在校准模式期间改变像素编程信号，以使从光源发射的光脉冲与像素调制信号的脉冲同步。

    FEED-FORWARD TECHNIQUE FOR POWER SUPPLY REJECTION RATIO IMPROVEMENT OF BIT LINE
    97.
    发明申请
    FEED-FORWARD TECHNIQUE FOR POWER SUPPLY REJECTION RATIO IMPROVEMENT OF BIT LINE 有权
    用于电源抑制比例改进的前馈技术

    公开(公告)号：US20150288902A1

    公开(公告)日：2015-10-08

    申请号：US14247855

    申请日：2014-04-08

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Tianjia Sun ,  Rui Wang ,  Liping Deng ,  Tiejun Dai

    IPC: H04N5/369 ,  H04N5/357

    CPC classification number: H04N5/3698 ,  H04N5/357 ,  H04N5/378

    Abstract: An image sensor read out circuit includes a first current mirror circuit in which a second current conducted through a second current path is controlled in response to a first current conducted through the first current path. The second current is conducted through an amplifier transistor of a pixel circuit. A first current source coupled to the first current path to provide a substantially constant current component of the first current. A second current source coupled to a power supply rail of the pixel circuit and coupled to the first current path to provide a ripple current component of the first current. The ripple current component provided by the second current source is responsive to a ripple in the power supply rail. The first current is responsive to a sum of the currents from the first and second current sources.

    Abstract translation: 图像传感器读出电路包括第一电流镜电路，其中响应于通过第一电流路径传导的第一电流来控制通过第二电流路径传导的第二电流。 第二电流通过像素电路的放大器晶体管导通。 耦合到第一电流路径以提供第一电流的基本上恒定的电流分量的第一电流源。 耦合到所述像素电路的电源轨并耦合到所述第一电流路径以提供所述第一电流的纹波电流分量的第二电流源。 由第二电流源提供的纹波电流分量响应于电源轨道中的纹波。 第一电流响应于来自第一和第二电流源的电流的总和。

    IMAGE SENSOR WITH SUBSTRATE NOISE ISOLATION
    98.
    发明申请
    IMAGE SENSOR WITH SUBSTRATE NOISE ISOLATION 有权
    具有基底噪声隔离的图像传感器

    公开(公告)号：US20140267860A1

    公开(公告)日：2014-09-18

    申请号：US13846418

    申请日：2013-03-18

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Tiejun Dai

    IPC: H04N5/357 ,  H01L27/146

    CPC classification number: H04N5/3577 ,  H01L27/1463 ,  H01L27/1464 ,  H01L27/14687 ,  H01L27/14689

    Abstract: A process including forming an a backside-illuminated (BSI) image sensor in a substrate, the image sensor including a pixel array formed in or near a front surface of the substrate and one or more circuit blocks formed in the substrate near the pixel array, each circuit block including at least one support circuit. An interconnect layer is formed on the front surface of the substrate that includes a dielectric within which are embedded traces and vias, wherein the traces and vias electrically couple the pixel array to at least one of the one or more support circuits. An isolation trench is formed surrounding at least one of the one or more circuit blocks to isolate the pixel array and other circuit blocks from noise generated by the at least one support circuit within the circuit block surrounded by the isolation trench. Other embodiments are disclosed and claimed.

    Abstract translation: 一种方法，包括在衬底中形成背面照射（BSI）图像传感器，所述图像传感器包括形成在所述衬底的前表面中或附近的像素阵列和形成在所述衬底附近的所述像素阵列的一个或多个电路块， 每个电路块包括至少一个支撑电路。 在衬底的前表面上形成互连层，该衬底的内表面上包括一个电介质，其中嵌有迹线和通孔，其中迹线和通孔将像素阵列电耦合到一个或多个支撑电路中的至少一个。 围绕所述一个或多个电路块中的至少一个形成隔离沟槽，以将像素阵列和其它电路块与由隔离沟槽包围的电路块内的至少一个支撑电路产生的噪声隔离开。 公开和要求保护其他实施例。

    ENTRENCHED TRANSFER GATE
    99.
    发明申请
    ENTRENCHED TRANSFER GATE 审中-公开
    创建转移门

    公开(公告)号：US20130248937A1

    公开(公告)日：2013-09-26

    申请号：US13897189

    申请日：2013-05-17

    Applicant: OmniVision Technologies, Inc.

    Inventor： Hidetoshi Nozaki ,  Tiejun Dai

    IPC: H01L27/148

    CPC classification number: H01L27/148 ,  H01L27/14601 ,  H01L27/14603 ,  H01L27/1461 ,  H01L27/14612 ,  H01L27/14614 ,  H01L27/14616 ,  H01L29/1079 ,  H01L29/1083 ,  H01L29/66537 ,  H01L2924/12043

    Abstract: An image sensor pixel includes a semiconductor layer, a photosensitive region to accumulate photo-generated charge, a floating node, a trench, and an entrenched transfer gate. The photosensitive region and the trench are disposed within the semiconductor layer. The trench extends into the semiconductor layer between the photosensitive region and the floating node and the entrenched transfer gate is disposed within the trench to control transfer of the photo-generated charge from the photosensitive region to the floating node.

    Abstract translation: 图像传感器像素包括半导体层，用于积累光电荷的光敏区域，浮动节点，沟槽和根深蒂的传输门。 感光区域和沟槽设置在半导体层内。 沟槽延伸到光敏区域和浮动节点之间的半导体层中，并且固定的传输栅极设置在沟槽内，以控制光生电荷从感光区域到浮动节点的转移。

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