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    Handheld device and positioning method thereof
    1.
    发明授权
    Handheld device and positioning method thereof 有权

    公开(公告)号：US10379627B2

    公开(公告)日：2019-08-13

    申请号：US15687525

    申请日：2017-08-27

    Applicant: PIXART IMAGING INC.

    Inventor： Han-Ping Cheng ,  Chao-Chien Huang

    IPC: G06F3/03 ,  G06F3/038 ,  G06F3/0346

    Abstract: A positioning method and a handheld device for performing the method are disclosed. In the method, a handheld device captures images corresponding to positions of a reference when the handheld device points toward the reference. A first image position, a first tilt angle indicative of a rotation angle of the handheld device, and a first pointing coordinate of the reference can obtained. A second pointing coordinate according to the first image position and a second tilt angle are obtained. Therefore, a first displacement vector between the first pointing coordinate and the second pointing coordinate can be computed. A third pointing coordinate can also be obtained. When a substantial movement of the positions of the reference revealed in the images captured by the handheld device is found, an output pointing coordinate is obtained. The output can be outputting a cursor parameter for controlling a cursor controlled by the handheld device.

    Interactive imaging system and remote controller applied thereto
    3.
    发明授权
    Interactive imaging system and remote controller applied thereto 有权
    交互式成像系统和遥控器

    公开(公告)号：US09444987B2

    公开(公告)日：2016-09-13

    申请号：US13930385

    申请日：2013-06-28

    Applicant: PixArt Imaging Inc

    Inventor： Chia-Cheun Liang ,  Chao-Chien Huang ,  Chi-Yang Huang ,  Wen-Yu Yang ,  Hung-Yu Lee

    IPC: H04N5/232 ,  H04N5/04 ,  H04N21/422 ,  H04N5/44

    CPC classification number: H04N5/23203 ,  H04N5/04 ,  H04N21/42222 ,  H04N2005/4405 ,  H04N2005/4428 ,  H04N2005/4432

    Abstract: An interactive imaging system includes an image system and a remote controller. The image system includes at least one reference beacon, a receiving unit and a host. The at least one reference beacon emits light in an emission pattern. The receiving unit is configured to receive a packet data. The host controls an enable time of the at least one reference beacon according to the packet data. The remote controller includes an image sensor and a transmission unit. The image sensor captures the light emitted from the at least one reference beacon at a sampling period. The transmission unit sends the packet data corresponding to the sampling period of the image sensor.

    Abstract translation: 交互式成像系统包括图像系统和遥控器。 图像系统包括至少一个参考信标，接收单元和主机。 至少一个参考信标以发射模式发光。 接收单元被配置为接收分组数据。 主机根据分组数据控制至少一个参考信标的使能时间。 遥控器包括图像传感器和传输单元。 图像传感器在采样周期捕获从至少一个参考信标发射的光。 发送单元发送与图像传感器的采样周期对应的分组数据。

    Pointer positioning method of handheld pointer device
    4.
    发明授权
    Pointer positioning method of handheld pointer device 有权
    手指式指针装置的指针定位方法

    公开(公告)号：US09304607B2

    公开(公告)日：2016-04-05

    申请号：US14318627

    申请日：2014-06-28

    Applicant: PIXART IMAGING INC.

    Inventor： Han-Ping Cheng ,  Chao-Chien Huang ,  Chia-Cheun Liang

    IPC: G09G5/00 ,  G06F3/0346 ,  G06F3/03 ,  G06F3/038 ,  G06F3/0481

    CPC classification number: G06F3/0346 ,  G06F3/0325 ,  G06F3/038 ,  G06F3/04812 ,  G06F2203/0384

    Abstract: A pointer positioning method of a handheld pointer device, which includes capturing a first image frame containing a reference point to compute a first pointing coordinate according to the image position of the reference point in the first image frame; generating a cursor parameter of a cursor according to the first pointing coordinate; when the handheld pointer device enters a pointer-lock mode, records the first pointing coordinate and positions the cursor at the first pointing coordinate on a display apparatus; when the handheld pointer device exits the pointer-lock mode, captures a second image frame to compute a second pointing coordinate according to the image position of the reference point in the second image frame to obtain a displacement vector between the first and the second pointing coordinates; generating the cursor parameter and controlling the movement of the cursor according to the displacement vector and the first pointing coordinate.

    Abstract translation: 一种手持式指针装置的指针定位方法，其特征在于，包括拍摄包含基准点的第一图像帧，根据所述参照点在所述第一图像帧中的图像位置来计算第一指示坐标; 根据第一指向坐标生成光标的光标参数; 当手持式指针装置进入指针锁定模式时，记录第一指示坐标并将光标定位在显示装置上的第一指向坐标处; 当手持指针装置退出指针锁定模式时，根据第二图像帧中的参考点的图像位置捕获第二图像帧以计算第二指示坐标，以获得第一和第二指示坐标之间的位移矢量 ; 生成光标参数，并根据位移矢量和第一指向坐标来控制光标的移动。

    Image identification method applied to a joystick
    5.
    发明授权
    Image identification method applied to a joystick 有权

    公开(公告)号：US11681321B2

    公开(公告)日：2023-06-20

    申请号：US17521883

    申请日：2021-11-09

    Applicant: PixArt Imaging Inc.

    Inventor： Chao-Chien Huang ,  Yen-Hung Wang ,  Yi-Chung Chen ,  Hui-Hsuan Chen ,  Yi-Hsien Ko

    IPC: G06F3/033 ,  G05G9/047

    CPC classification number: G05G9/047 ,  G05G2009/04759

    Abstract: An image identification method is used to eliminate accumulated error of operation of a joystick. The joystick has an optical sensor adapted to analyze a movement of a plurality of identification dots disposed on a stick body. The image identification method includes receiving a series of detection images, setting a first identification dot of the plurality of identification dots as being a reference identification dot, and setting a second identification dot of the plurality of identification dos as being the reference identification dot and cancelling the first identification dot as being the reference identification dot when the first identification dot is near a border of the detection image. A position change of the reference identification dot in the series of detection images is used for identifying a control status of the joystick.

    PRESSURE DETECTION DEVICE
    6.
    发明申请
    PRESSURE DETECTION DEVICE 有权

    公开(公告)号：US20210382514A1

    公开(公告)日：2021-12-09

    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

    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.

    Pressure detection device
    8.
    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.

    Joystick and image identifying method
    10.
    发明授权
    Joystick and image identifying method 有权

    公开(公告)号：US11669121B2

    公开(公告)日：2023-06-06

    申请号：US17152730

    申请日：2021-01-19

    Applicant: PixArt Imaging Inc.

    Inventor： Chao-Chien Huang ,  Yi-Chung Chen

    IPC: G05G9/047 ,  G06F3/0338

    CPC classification number: G05G9/047 ,  G06F3/0338 ,  G05G2009/04748 ,  G05G2009/04759

    Abstract: A joystick includes a casing, a stick body, an identification mark and an optical sensor. The casing has a hole. The stick body is movably disposed on the casing. The stick body has a first section and a second section. The first section penetrates through the hole to protrude from the casing, and the second section is inside the casing. The identification mark is disposed on the second section of the stick body. The identification includes a first line group and a second line group crossed to each other. The first line group and the second line group respectively has a plurality of lines with different widths and arranged adjacent to each other. The optical sensor is disposed inside the casing and adapted to acquire an identification image containing the identification mark to determine a gesture of the stick body.

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