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    Sensor device with sensing array having sensing pixels and self-powered pixels
    94.
    发明授权
    Sensor device with sensing array having sensing pixels and self-powered pixels 有权

    公开(公告)号：US11740684B2

    公开(公告)日：2023-08-29

    申请号：US17380660

    申请日：2021-07-20

    Applicant: PixArt Imaging Inc.

    Inventor： Guo-Zhen Wang

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

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

    PRESSURE SENSING UNIT
    95.
    发明公开
    PRESSURE SENSING UNIT 审中-公开

    公开(公告)号：US20230266191A1

    公开(公告)日：2023-08-24

    申请号：US18142055

    申请日：2023-05-02

    Applicant: PIXART IMAGING INC.

    Inventor： CHE-CHIA HSU ,  YU-HAN CHEN ,  CHI-CHIEH LIAO

    IPC: G01L9/12 ,  G01L9/00

    CPC classification number: G01L9/12 ,  G01L9/0005

    Abstract: A pressure sensing unit is provided. The pressure sensing unit includes a membrane and a pressure sensing pad group. The membrane has a first surface and a second surface. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The ground pad and one among the first pressure sensing pad and the second pressure sensing pad are located at the first surface of the membrane, another one among the first pressure sensing pad and the second pressure sensing pad is located at the second surface of the membrane, and an orthographic projection of the ground pad projected onto a reference plane is located between orthographic projections of the first pressure sensing pad and the second pressure sensing pad that are projected onto the reference plane.

    LIGHTING TOUCHPAD
    96.
    发明公开
    LIGHTING TOUCHPAD 审中-公开

    公开(公告)号：US20230259228A1

    公开(公告)日：2023-08-17

    申请号：US18140890

    申请日：2023-04-28

    Applicant: PIXART IMAGING INC.

    Inventor： CHI-CHIEH LIAO

    IPC: G06F3/041 ,  H01L25/075 ,  G06F3/044

    CPC classification number: G06F3/0416 ,  H01L25/0753 ,  G06F3/0445

    Abstract: A lighting touchpad is provided, which includes a substrate module, a plurality of sensing electrodes, a plurality of driving electrodes, a plurality of light emitting diode (LED) chips mounted on the substrate module, and a controller. The driving electrodes and the sensing electrodes are formed on the substrate module. The driving electrodes define a distribution space that extends along a normal direction of the substrate module. The LED dies are arranged in the distribution space. The controller is electrically coupled to the sensing electrodes, the driving electrodes, and the LED dies through the substrate module. When a coupling capacity is generated between a conductor and at least one of the sensing electrodes, the controller is configured to drive at least one of the LED dies adjacent to the at least one of the sensing electrodes to emit light.

    Dynamic moving averaging method to suppress mouse stationary jitter
    97.
    发明授权
    Dynamic moving averaging method to suppress mouse stationary jitter 有权

    公开(公告)号：US11726586B1

    公开(公告)日：2023-08-15

    申请号：US17875436

    申请日：2022-07-28

    Applicant: PixArt Imaging Inc.

    Inventor： Chun Heap Leow

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

    CPC classification number: G06F3/038 ,  G06F3/0304 ,  G06F3/03543

    Abstract: A method for reducing jitter of a mouse when in a stationary condition, including: receiving a plurality of raw delta; comparing a movement of the mouse with a predetermined threshold; and when the movement is less than the predetermined threshold, entering a dynamic downshift mode. Entering the dynamic downshift mode includes: storing raw delta into a multi-tap buffer; when the multi-tap buffer is not full, outputting the raw delta as reported delta; and when the multi-tap buffer is full, calculating an average of the total raw delta stored in the multi-tap buffer, and outputting the average delta as reported delta.

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