中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

63 records (took 0.022 seconds)

    CMOS IMAGE SENSOR WITH DIVIDED BIT LINES
    41.
    发明申请
    CMOS IMAGE SENSOR WITH DIVIDED BIT LINES 审中-公开

    公开(公告)号：US20190268556A1

    公开(公告)日：2019-08-29

    申请号：US16222832

    申请日：2018-12-17

    Applicant: OmniVision Technologies, Inc.

    Inventor： Hiroaki Ebihara ,  Rui Wang ,  Zheng Yang ,  Eiichi Funatsu

    IPC: H04N5/378 ,  H01L27/146

    Abstract: An image sensor includes a pixel array including a plurality of pixels. A bit line coupled to a column of pixels is separated in to a plurality of electrically portions that are coupled to corresponding portions of rows of the pixel array. A first switching circuit of a readout circuit is coupled to the bit line. A first switching circuit is configured to couple a bit line current source to the bit line to provide a DC current coupled to flow through the bit line and through the first switching circuit during a readout operation of a pixel coupled to the bit line. A second switching circuit is configured to couple and ADC to the bit line during the readout operation of the pixel. Substantially none of the DC current provided by the bit line current source flows through the second switching circuit during the readout operation of the pixel.

    Time of flight photosensor
    42.
    发明授权
    Time of flight photosensor 有权

    公开(公告)号：US10291895B2

    公开(公告)日：2019-05-14

    申请号：US15333653

    申请日：2016-10-25

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Olivier Bulteel ,  Rui Wang ,  Zheng Yang

    IPC: H04N7/00 ,  H04N13/122 ,  H04N13/254 ,  G01S3/00 ,  G01B11/24

    Abstract: A time of flight pixel cell includes a photosensor to sense photons reflected from an object and pixel support circuitry. The pixel support circuitry includes charging control logic coupled to the photosensor to detect when the photosensor senses the photons reflected from the object. The pixel support circuitry also includes a controllable current source coupled to provide a charge current in response to a time of flight signal coupled to be received from the charging control logic. A capacitor is coupled to receive the charge current from the controllable current source in response to the time of flight signal, and voltage on the capacitor is representative of a round trip distance to the object. A counter circuit is coupled to the photosensor to count a number of the photons reflected from the object and received by the photosensor.

    COMPARATOR FOR DOUBLE RAMP ANALOG TO DIGITAL CONVERTER
    43.
    发明申请
    COMPARATOR FOR DOUBLE RAMP ANALOG TO DIGITAL CONVERTER 审中-公开

    公开(公告)号：US20180324378A1

    公开(公告)日：2018-11-08

    申请号：US16035363

    申请日：2018-07-13

    Applicant: OmniVision Technologies, Inc.

    Inventor： Hiroaki Ebihara ,  Zheng Yang

    IPC: H04N5/378 ,  H03K5/24

    CPC classification number: H04N5/378 ,  H03K5/2481

    Abstract: Apparatuses and method for an image sensor with increased analog to digital conversion range and reduced noise are described herein. An example method may include disabling a first auto-zero switch of a comparator, the first auto-zero switch coupled to auto-zero a reference voltage input of the comparator, adjusting an auto-zero offset voltage of a ramp voltage provided to the reference voltage input of the comparator, and disabling a second auto-zero switch of the comparator, the second auto-zero switch coupled to auto-zero a bitline input of the comparator.

    TIME OF FLIGHT PHOTOSENSOR
    45.
    发明申请
    TIME OF FLIGHT PHOTOSENSOR 审中-公开

    公开(公告)号：US20180115762A1

    公开(公告)日：2018-04-26

    申请号：US15333653

    申请日：2016-10-25

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Olivier Bulteel ,  Rui Wang ,  Zheng Yang

    IPC: H04N13/00 ,  H04N13/02

    CPC classification number: H04N13/122 ,  G01B11/24 ,  G01S3/00 ,  H04N13/254

    Abstract: A time of flight pixel cell includes a photosensor to sense photons reflected from an object and pixel support circuitry. The pixel support circuitry includes charging control logic coupled to the photosensor to detect when the photosensor senses the photons reflected from the object. The pixel support circuitry also includes a controllable current source coupled to provide a charge current in response to a time of flight signal coupled to be received from the charging control logic. A capacitor is coupled to receive the charge current from the controllable current source in response to the time of flight signal, and voltage on the capacitor is representative of a round trip distance to the object. A counter circuit is coupled to the photosensor to count a number of the photons reflected from the object and received by the photosensor.

    Image sensor with fast intra-frame focus
    47.
    发明授权
    Image sensor with fast intra-frame focus 有权
    具有快速帧内对焦的图像传感器

    公开(公告)号：US09124823B2

    公开(公告)日：2015-09-01

    申请号：US13950970

    申请日：2013-07-25

    Applicant: OMNIVISION TECHNOLOGIES, INC.

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

    IPC: H04N5/232 ,  H04N5/335

    CPC classification number: H04N5/335 ,  H04N5/23212

    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.

    Abstract translation: 聚焦图像传感器的方法包括以第一速率首先从图像传感器扫描图像帧的第一部分以产生第一焦点数据。 以第二速率扫描来自图像传感器的图像帧的第二部分，以从第二部分读取图像数据。 第一个比率大于第二个比率。 以第一速率第二次扫描图像帧的第一部分以产生第二焦点数据。 比较第一焦点数据和第二焦点数据，并且响应于第一焦点数据和第二焦点数据的比较来调整透镜的焦点。

    METHOD AND APPARATUS FOR READING IMAGE DATA FROM AN IMAGE SENSOR
    48.
    发明申请
    METHOD AND APPARATUS FOR READING IMAGE DATA FROM AN IMAGE SENSOR 有权
    从图像传感器读取图像数据的方法和装置

    公开(公告)号：US20150070547A1

    公开(公告)日：2015-03-12

    申请号：US14024123

    申请日：2013-09-11

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Tiejun Dai ,  Zheng Yang ,  Shijing Yao

    IPC: H04N5/369 ,  H04N5/374

    CPC classification number: H04N5/374 ,  H04N5/37457

    Abstract: A method of reading image data from an image sensor includes accumulating image charges in photosensitive elements of an array of pixel cells. The accumulated image charges are transferred to corresponding transistors in multi-phase transfer channels that are coupled to corresponding columns of the pixel array. Multi-phase transfer signals are generated. Each set of the multi-phase transfer signals includes a plurality of control signals that are out-of-phase with one another and are coupled to control respective transistors in the multi-phase transfer channels. The accumulated image charges from a first variable number of pixel cells of a selected column are output in response to the multi-phase transfer signals. The accumulated image charges from a second variable number of pixel cells of another selected column are output in response to the multi-phase transfer signals.

    Abstract translation: 从图像传感器读取图像数据的方法包括在像素单元阵列的感光元件中累积图像电荷。 累积的图像电荷被传送到耦合到像素阵列的相应列的多相传输通道中的相应晶体管。 产生多相传输信号。 每组多相传输信号包括彼此不同相的多个控制信号，并被耦合以控制多相传输信道中的各个晶体管。 响应于多相传输信号输出来自所选列的第一可变数目的像素单元的累积图像电荷。 响应于多相传输信号输出来自另一所选列的第二可变数目的像素单元的累积图像电荷。

    Color-infrared sensor with a low power binning readout mode
    49.
    发明授权
    Color-infrared sensor with a low power binning readout mode 有权

    公开(公告)号：US12184956B2

    公开(公告)日：2024-12-31

    申请号：US17388876

    申请日：2021-07-29

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Zheng Yang

    IPC: H04N23/11 ,  H04N23/84 ,  H04N25/13 ,  H04N25/131 ,  H04N25/40 ,  H04N25/44 ,  H04N25/441

    Abstract: An imaging device includes a pixel array including a 4×4 grouping of pixel circuits. The 4×4 grouping of pixel circuits includes four rows and four columns of the pixel array. A plurality of bitlines includes a first bitline, a second bitline, a third bitline, and a fourth bitline. Each one of the first, second, third, and fourth bitlines is coupled to a respective four pixel circuits in the 4×4 grouping of pixel circuits. Each one of the first, second, third, and fourth bitlines is coupled to all four of the rows and to all four of the columns of the 4×4 grouping of pixel circuits.

Patent Agency Ranking