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    Pressure detection device
    71.
    发明授权
    Pressure detection device 有权

    公开(公告)号：US11829180B2

    公开(公告)日：2023-11-28

    申请号：US17411022

    申请日：2021-08-24

    Applicant: PixArt Imaging Inc.

    Inventor： Wei-Chung Wang ,  Hsin-Chia Chen ,  Hui-Hsuan Chen ,  Chao-Chien Huang ,  Chu-Hung Nien

    IPC: G05G9/047 ,  G06F3/038

    CPC classification number: G05G9/047 ,  G06F3/038 ,  G05G2009/04759

    Abstract: A pressure detection device of detecting a forced state of a deformable object includes a body, an image sensor and a processor. The body is a deformable hollow structure. The body has an inner surface and an outer surface, and an identifiable vision feature is disposed on the inner surface. The image sensor is disposed inside the body and faces the inner surface of the body, and is adapted to capture a frame containing the identifiable vision feature on the inner surface. The processor is electrically connected with the image sensor, and adapted to analyze position variation of the identifiable vision feature within the captured frame for identifying a motion type of a gesture applied to the outer surface of the body.

    Distance measuring method and apparatus
    73.
    发明授权
    Distance measuring method and apparatus 有权

    公开(公告)号：US11815605B2

    公开(公告)日：2023-11-14

    申请号：US17162826

    申请日：2021-01-29

    Applicant: PIXART IMAGING INC.

    Inventor： Guo-Zhen Wang ,  Ming-Tsan Kao

    IPC: G01C3/08 ,  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.

    Optical engine accommodating multiple light sources
    74.
    发明授权
    Optical engine accommodating multiple light sources 有权

    公开(公告)号：US11812130B2

    公开(公告)日：2023-11-07

    申请号：US18098663

    申请日：2023-01-18

    Applicant: PixArt Imaging Inc.

    Inventor： Hung-Yu Lai

    IPC: H04N23/54 ,  G05D1/02 ,  H04N23/55 ,  H04N23/56

    CPC classification number: H04N23/54 ,  G05D1/0246 ,  H04N23/55 ,  H04N23/56 ,  G05D2201/0215

    Abstract: There is provided an optical engine for a navigation device including a first light source, a second light source, a lens, a barrier structure and an image sensor. The barrier structure has a first space for containing the first light source, a second space for containing the lens and a third space for containing the second light source and the image sensor. The reflected light associated with the first light source propagates to the image sensor via the lens in the second space. The reflected light associated with the second light source propagates to the image sensor via the third space without passing through the lens in the second space.

    Method and system for optical distance measurement
    75.
    发明授权
    Method and system for optical distance measurement 有权

    公开(公告)号：US11808852B2

    公开(公告)日：2023-11-07

    申请号：US17485518

    申请日：2021-09-27

    Applicant: PixArt Imaging Inc.

    Inventor： Guo-Zhen Wang

    IPC: G01S17/48 ,  G01S7/4912 ,  G01S7/4913

    CPC classification number: G01S17/48 ,  G01S7/4912 ,  G01S7/4913

    Abstract: An optical distance measurement method includes: acquiring a plurality of sensed values based on detecting light; performing a filtering operation to select a plurality of selected sensed values from the plurality of sensed values; determining a location of a centroid according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.

    SIGNAL PROCESSING CIRCUIT OF ANTI-POLLUTION OPTICAL ENCODER
    78.
    发明公开
    SIGNAL PROCESSING CIRCUIT OF ANTI-POLLUTION OPTICAL ENCODER 审中-公开

    公开(公告)号：US20230349732A1

    公开(公告)日：2023-11-02

    申请号：US18219729

    申请日：2023-07-10

    Applicant: PixArt Imaging Inc.

    Inventor： KUAN-CHOONG SHIM ,  GIM-ENG CHEW ,  PRISCILLA TZE-WEI GOH ,  MENG-YEE LIM

    IPC: G01D5/347

    CPC classification number: G01D5/3473

    Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.

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