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    OPTICAL SENSOR DEVICE HAVING SENSING PIXELS AND SELF-POWERED PIXELS
    43.
    发明公开
    OPTICAL SENSOR DEVICE HAVING SENSING PIXELS AND SELF-POWERED PIXELS 审中-公开

    公开(公告)号：US20230359264A1

    公开(公告)日：2023-11-09

    申请号：US18222468

    申请日：2023-07-16

    Applicant: PixArt Imaging Inc.

    Inventor： GUO-ZHEN WANG

    IPC: G06F1/3234 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/03

    CPC classification number: G06F1/3259 ,  G06F3/03543 ,  G06F3/038 ,  G06F3/0354 ,  G06F3/0317 ,  Y02D10/00

    Abstract: A sensor device includes an image sensing array, a frame buffer, a first read line, a second read line and an energy accumulator. The image sensing array is configured to sense reflected light from a working surface and includes a plurality of sensing pixels and a plurality of self-powered pixels. The sensing pixels respectively output image data according to the sensed reflected light. The self-powered pixels respectively output photocurrent according to the sensed reflected light. The first read line is coupled between the sensing pixels and the frame buffer. The second read line is coupled between the self-powered pixels and the frame buffer. The energy accumulator stores electrical energy of the photocurrent via a charge path between the self-powered pixels and the energy accumulator.

    LIGHT SENSOR CHIP ADAPTABLE TO LOW ILLUMINATION ENVIRONMENT
    44.
    发明申请
    LIGHT SENSOR CHIP ADAPTABLE TO LOW ILLUMINATION ENVIRONMENT 有权

    公开(公告)号：US20220191380A1

    公开(公告)日：2022-06-16

    申请号：US17687986

    申请日：2022-03-07

    Applicant: PixArt Imaging Inc.

    Inventor： GUO-ZHEN WANG

    IPC: H04N5/235 ,  H04N5/232 ,  H04N5/355 ,  H04N5/357 ,  G06T5/00

    Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.

    DISTANCE MEASURING METHOD AND APPARATUS
    46.
    发明申请
    DISTANCE MEASURING METHOD AND APPARATUS 有权

    公开(公告)号：US20210149050A1

    公开(公告)日：2021-05-20

    申请号：US17162826

    申请日：2021-01-29

    Applicant: PIXART IMAGING INC.

    Inventor： GUO-ZHEN WANG ,  MING-TSAN KAO

    IPC: G01S17/46

    Abstract: Disclosed are a distance measuring method and a distance measuring apparatus. During the distance measuring, an image is obtained. If the location of a center of gravity of the image is within a first segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point, according to a first mapping relationship and the location of a center of gravity of the image. If the location of a center of gravity of the image is within a second segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point according to a second mapping relationship and the location of a center of gravity of the image.

    MOBILE ROBOT PERFORMING MULTIPLE DETECTIONS USING IMAGE FRAMES OF SAME OPTICAL SENSOR
    47.
    发明申请
    MOBILE ROBOT PERFORMING MULTIPLE DETECTIONS USING IMAGE FRAMES OF SAME OPTICAL SENSOR 有权

    公开(公告)号：US20210016449A1

    公开(公告)日：2021-01-21

    申请号：US17064776

    申请日：2020-10-07

    Applicant: PixArt Imaging Inc.

    Inventor： GUO-ZHEN WANG

    IPC: B25J9/16 ,  B25J13/08

    Abstract: There is provided a mobile robot that controls an exposure time of an optical sensor during a time interval during which images of a gap between tiles are captured. At an end of the time interval that an image of a gap between tiles is captured, the exposure time of the optical sensor is adjust to the exposure time being used right before the time interval to avoid high brightness of the captured image while the image of a gap between tiles is suddenly disappeared from a field of view of the optical sensor.

    LIGHT SENSOR CHIP AND IMAGE PROCESSING DEVICE ADAPTABLE TO LOW ILLUMINATION ENVIRONMENT
    48.
    发明申请
    LIGHT SENSOR CHIP AND IMAGE PROCESSING DEVICE ADAPTABLE TO LOW ILLUMINATION ENVIRONMENT 审中-公开

    公开(公告)号：US20200374446A1

    公开(公告)日：2020-11-26

    申请号：US16993433

    申请日：2020-08-14

    Applicant: PixArt Imaging Inc.

    Inventor： GUO-ZHEN WANG

    IPC: H04N5/235 ,  H04N5/232 ,  H04N5/355 ,  H04N5/357 ,  G06T5/00

    Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.

    DISTANCE MEASURING METHOD AND APPARATUS
    49.
    发明申请
    DISTANCE MEASURING METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20190187289A1

    公开(公告)日：2019-06-20

    申请号：US16281330

    申请日：2019-02-21

    Applicant: PIXART IMAGING INC.

    Inventor： GUO-ZHEN WANG ,  MING-TSAN KAO

    IPC: G01S17/89 ,  G01S17/46

    CPC classification number: G01S17/89 ,  G01S17/46

    Abstract: Disclosed are a distance measuring method and a distance measuring apparatus. During the distance measuring, an image is obtained. If the location of a center of gravity of the image is within a first segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point, according to a first mapping relationship and the location of a center of gravity of the image. If the location of a center of gravity of the image is within a second segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point according to a second mapping relationship and the location of a center of gravity of the image.

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