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    Chip having updating bus and reading bus
    41.
    发明授权
    Chip having updating bus and reading bus 有权

    公开(公告)号：US12001832B2

    公开(公告)日：2024-06-04

    申请号：US18143609

    申请日：2023-05-05

    Applicant: PixArt Imaging Inc.

    Inventor： Jr-Yi Li

    IPC: G06F8/65 ,  G06F9/4401

    CPC classification number: G06F8/65 ,  G06F9/4411

    Abstract: There is provided a control chip including a microcontroller unit (MCU), a bus arbiter, a first bus, a second bus, a void hardware, a cache controller, a flash controller and a flash memory, wherein the flash memory is recorded with a firmware. When the MCU does not receive an update instruction, the bus arbiter reads, according to a function command of the MCU, a function return value associated with the function command from the flash memory via the first bus, the cache controller and the flash controller. When the MCU receives the update instruction, the bus arbiter updates the firmware in the flash memory via the second bus and the flash controller, and the void hardware actively replies a void return value associated with the function command to the MCU to replace the function return value.

    OPTICAL TRACKING DEVICE
    43.
    发明公开
    OPTICAL TRACKING DEVICE 审中-公开

    公开(公告)号：US20240168165A1

    公开(公告)日：2024-05-23

    申请号：US17991820

    申请日：2022-11-21

    Applicant: PixArt Imaging Inc.

    Inventor： Chung-Ting Yang ,  Kai-Ho Tsai

    IPC: G01S17/66

    CPC classification number: G01S17/66

    Abstract: An optical tracking device includes an optical detection module and a target component. The optical detection module includes an optical receiver. The target component includes a light penetrating body with at least one mark and movably disposed adjacent to the optical detection module. The target component allows an illumination beam penetrating into the light penetrating body, so that the optical detection module acquires a detection image containing a pattern of the mark for tracking a relative movement between the target component and the optical detection module.

    Game board device
    46.
    发明授权
    Game board device 有权

    公开(公告)号：US11964212B2

    公开(公告)日：2024-04-23

    申请号：US17563289

    申请日：2021-12-28

    Applicant: PIXART IMAGING INC.

    Inventor： Chung-Ting Yang ,  Yen-Min Chang ,  Yen-Chang Wang

    IPC: A63F3/02 ,  A63F3/00 ,  A63F9/24

    CPC classification number: A63F3/02 ,  A63F3/00643 ,  A63F2003/00646 ,  A63F2003/00662 ,  A63F2009/2419

    Abstract: A game board device is provided for carrying and identifying game pieces that are divided into different piece types. The game board device includes a board, a plurality of optically identifying modules, and a processing module electrically coupled to the optically identifying modules. The optically identifying modules respectively correspond in position to detection regions of the board. Each of the optically identifying modules includes a light emitter that can emit light toward the corresponding detection region and a light receiver that can receive light reflected by the corresponding detection region. When any one of the detection regions is in an unoccupied mode, the corresponding optically identifying module can emit an unoccupied signal. When any one of the detection regions is in an occupied mode, the corresponding optically identifying module enables an identification signal that corresponds to the piece type of the corresponding game piece to be emitted therefrom.

    OPTICAL SENSOR MECHANISM CAPABLE OF MITIGATING SIGNAL NONLINEARITY
    48.
    发明公开
    OPTICAL SENSOR MECHANISM CAPABLE OF MITIGATING SIGNAL NONLINEARITY 审中-公开

    公开(公告)号：US20240119693A1

    公开(公告)日：2024-04-11

    申请号：US17952305

    申请日：2022-09-25

    Applicant: PixArt Imaging Inc.

    Inventor： Ming-Tse Lin

    IPC: G06V10/141 ,  G06V10/147 ,  G06V10/74 ,  H03M1/66

    CPC classification number: G06V10/141 ,  G06V10/147 ,  G06V10/761 ,  H03M1/66

    Abstract: A method of an optical sensor device includes: providing an optical sensor for receiving reflected light associated with a light emission unit to generate at least one sensed image; using a first exposure setting to make the optical sensor generate a first frame data during a first frame time period of a frame; when performing an exposure adjustment operation, using a second exposure setting to make the optical sensor generate a second frame data during a second time period of the frame neighbor to the first frame time period of the frame; and, generating a normalized digital signal corresponding to the first frame data based on the relation between the first frame data and the second frame data.

    Image quality improving method, optical navigation device control method, and optical navigation device using the methods
    49.
    发明授权
    Image quality improving method, optical navigation device control method, and optical navigation device using the methods 有权

    公开(公告)号：US11947737B2

    公开(公告)日：2024-04-02

    申请号：US18143085

    申请日：2023-05-04

    Applicant: PixArt Imaging Inc.

    Inventor： Bo-Yi Chang ,  Yao-Hsuan Lin

    IPC: G06F3/03 ,  G06F3/0354 ,  H04N23/71

    CPC classification number: G06F3/0321 ,  G06F3/03543 ,  H04N23/71

    Abstract: An optical navigation device control method comprising: (a) computing brightness contrast information of original images captured by an image sensor of an optical navigation device; (b) computing brightness variation levels of the original images; (c) improving image qualities of the original images based on the brightness contrast information and the brightness variation levels, to generate adjusted images; and (d) computing movements of the optical navigation device based on displacement between the adjusted images. The optical navigation device is located on a surface. The step (d) comprises: collecting reference images of different parts of the surface for a plurality of combinations of moving directions of the optical navigation device and placement directions of the surface; and determining a type of the surface via comparing images of a current surface with the reference images.

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