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    Pixel circuit selecting to output time difference data or image data
    1.
    发明授权
    Pixel circuit selecting to output time difference data or image data 有权

    公开(公告)号：US12137295B2

    公开(公告)日：2024-11-05

    申请号：US18235370

    申请日：2023-08-18

    Applicant: PixArt Imaging Inc.

    Inventor： Ren-Chieh Liu ,  Yi-Cheng Chiu

    IPC: H04N25/767 ,  H01L27/146

    Abstract: There is provided a pixel circuit capable of outputting time difference data or image data, and including a first temporal circuit and a second temporal circuit. The first temporal circuit is used to store detected light energy of a first interval and a second interval as the time difference data. The second temporal circuit is used to store detected light energy of the second interval as the image data. The pixel circuit is used to output a pulse width signal corresponding to the time difference data or the image data in different operating modes.

    Image sensor apparatus and processing circuit capable of preventing sampled reset/exposure charges from light illumination as well as achieving lower circuit costs
    3.
    发明授权
    Image sensor apparatus and processing circuit capable of preventing sampled reset/exposure charges from light illumination as well as achieving lower circuit costs 有权

    公开(公告)号：US11317042B2

    公开(公告)日：2022-04-26

    申请号：US17183366

    申请日：2021-02-24

    Applicant: PixArt Imaging Inc.

    Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Jui-Te Chiu

    IPC: H04N5/355 ,  H01L27/146 ,  H04N5/353

    Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.

    Image sensor apparatus and processing circuit capable of preventing sampled reset/exposure charges from light illumination as well as achieving lower circuit costs
    4.
    发明授权
    Image sensor apparatus and processing circuit capable of preventing sampled reset/exposure charges from light illumination as well as achieving lower circuit costs 有权

    公开(公告)号：US11265506B1

    公开(公告)日：2022-03-01

    申请号：US17002755

    申请日：2020-08-25

    Applicant: PixArt Imaging Inc.

    Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Jui-Te Chiu

    IPC: H04N5/378 ,  H04N5/355 ,  H04N5/3745 ,  H04N5/369

    Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.

    IMAGE SENSOR APPARATUS AND PROCESSING CIRCUIT CAPABLE OF PREVENTING SAMPLED RESET/EXPOSURE CHARGES FROM LIGHT ILLUMINATION AS WELL AS ACHIEVING LOWER CIRCUIT COSTS
    5.
    发明申请
    IMAGE SENSOR APPARATUS AND PROCESSING CIRCUIT CAPABLE OF PREVENTING SAMPLED RESET/EXPOSURE CHARGES FROM LIGHT ILLUMINATION AS WELL AS ACHIEVING LOWER CIRCUIT COSTS 有权

    公开(公告)号：US20220070395A1

    公开(公告)日：2022-03-03

    申请号：US17183366

    申请日：2021-02-24

    Applicant: PixArt Imaging Inc.

    Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Jui-Te Chiu

    IPC: H04N5/355 ,  H04N5/353 ,  H01L27/146

    Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.

    Image sensor and control method for the same
    6.
    发明授权
    Image sensor and control method for the same 有权

    公开(公告)号：US11018170B2

    公开(公告)日：2021-05-25

    申请号：US16455964

    申请日：2019-06-28

    Applicant: PIXART IMAGING INC.

    Inventor： Kuan Tang ,  Jui-Te Chiu ,  Yi-Cheng Chiu ,  Chia-Chi Kuo ,  Kai-Chieh Chuang

    IPC: H01L27/146

    Abstract: An image sensor includes a pair of pixel sharing circuits, a second reset transistor, an amplifier transistor, a readout transistor and a control circuit. The pair of pixel sharing circuits connected to a floating diffusion node, each including a photon device, a first reset transistor, a capture transistor, a holding transistor, a capacitor and a sharing transistor. The control circuit is configured to control the first reset transistor, the first capture transistor, the first holding transistor and the sharing transistor of each of the pair of sharing pixel circuits to be turned on or off.

    Image sensor capable of averaging pixel data
    7.
    发明授权
    Image sensor capable of averaging pixel data 有权

    公开(公告)号：US10609319B2

    公开(公告)日：2020-03-31

    申请号：US15830754

    申请日：2017-12-04

    Applicant: PixArt Imaging Inc.

    Inventor： Chia-Chi Kuo ,  Jui-Te Chiu ,  Han-Chi Liu ,  Peng-Sheng Chen ,  Yi-Cheng Chiu

    IPC: H04N5/378 ,  H04N5/369 ,  H04N5/3745 ,  H04N5/374 ,  H04N5/347

    Abstract: An image sensor including a first pixel circuit, a second pixel circuit, a first readout line, a second readout line, a first readout circuit, a second readout circuit and an average switch is provided. The first and second pixel circuits are in two columns of a pixel array. The first readout line transmits pixel data of the first pixel circuit to the first readout circuit. The second readout line transmits pixel data of the second pixel circuit to the second readout circuit. The average switch is arranged between the first and second readout lines and used to electrically connect the first and second readout lines in an average mode to average the pixel data on the first and second readout lines.

    Image sensor apparatus and method capable of rapidly reading out and processing pixel voltages of pixel array
    10.
    发明授权
    Image sensor apparatus and method capable of rapidly reading out and processing pixel voltages of pixel array 有权

    公开(公告)号：US11012653B2

    公开(公告)日：2021-05-18

    申请号：US16601541

    申请日：2019-10-14

    Applicant: PixArt Imaging Inc.

    Inventor： Chia-Chi Kuo ,  Jui-Te Chiu ,  Han-Chi Liu ,  Wei-Chia Huang ,  Yi-Cheng Chiu ,  Kuan Tang

    IPC: H04N5/376 ,  H04N5/372 ,  H04N5/3745

    Abstract: A method of image sensor apparatus includes: providing pixel array having pixel units arranged in M rows and N columns; providing N parallel column readout circuits each being arranged for reading out pixel data of one corresponding column; disposing a horizontal shift register in row direction coupled to the N parallel column readout circuits, to receive a pulse signal and a clock signal, sequentially shift a phase of the pulse signal according to the clock signal, and scan a corresponding column according to the shifted phase of the pulse signal; and using a column select circuit having N latches to receive a power down digital control signal transmitted from a microcontroller wherein the power down digital control signal is used to disable at least one column readout circuit to enable and select a portion of the set of N parallel column readout circuits.

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