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    SENSOR MODULE, SENSOR UNIT AND SYSTEM FOR RECOGNIZING SURROUNDING OBJECTS AND DEFINING AN ENVIRONMENT
    1.
    发明申请
    SENSOR MODULE, SENSOR UNIT AND SYSTEM FOR RECOGNIZING SURROUNDING OBJECTS AND DEFINING AN ENVIRONMENT 审中-公开

    公开(公告)号：US20190156091A1

    公开(公告)日：2019-05-23

    申请号：US15984510

    申请日：2018-05-21

    Applicant: PIXART IMAGING INC.

    Inventor： TSUNG-HSUEH LEE ,  CHAO-CHIEN HUANG ,  CHENG-LIN YANG

    IPC: G06K7/14 ,  G06K19/06 ,  G06K7/10

    Abstract: The disclosure is related to a sensor module, a sensor unit and a system for recognizing surrounding objects and defining an environment. The sensor module is installed in a sensor unit. The sensor module includes an optical element guiding the lights from the objects surrounding the sensor unit and to an image sensor, and the image sensor is used to sense the lights from the objects. The light can be directly from a light source inside the surrounding object or reflected by the object surface. The objects can be identified according to optical features obtained by the image sensor from surfaces of the objects. When the image sensor receives the two lights, guided by the optical element, and reads optical features being regarded as the unique IDs to identify the objects respectively. Therefore, an environment around the sensor unit can be defined.

    POINTER POSITIONING METHOD OF HANDHELD POINTER DEVICE
    2.
    发明申请
    POINTER POSITIONING METHOD OF HANDHELD POINTER DEVICE 有权
    手指定位装置的指针定位方法

    公开(公告)号：US20150009141A1

    公开(公告)日：2015-01-08

    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: G06F3/0346

    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。

    LIGHT GUIDE ASSEMBLY AND ACCESS CONTROL SYSTEM THEREOF
    3.
    发明申请
    LIGHT GUIDE ASSEMBLY AND ACCESS CONTROL SYSTEM THEREOF 审中-公开

    公开(公告)号：US20200064947A1

    公开(公告)日：2020-02-27

    申请号：US16546155

    申请日：2019-08-20

    Applicant: PIXART IMAGING INC.

    Inventor： CHAO-CHIEN HUANG ,  HUNG-CHING LAI ,  TING-YANG CHANG ,  YI-HSIEN KO

    IPC: G06F3/042 ,  F21V8/00

    Abstract: A light-guide assembly and an access control system are provided. The light-guide assembly is used as an interface for touch input. The light-guide assembly includes a light-guide element and a light source disposed on a lateral surface of the light-guide element. The light source emits a first light with a first wavelength. The light-guide element has an upper surface, a lower surface, and an inner layer that is made of a light-transmissive material. The first light enters the light-guide element through the lateral surface and propagates inside the light-guide element for reacting to the touch event occurring on the upper surface. A verification data used in an access control system is formed when the touch event is sensed and identified. A light-activation element of the assembly activates the first light propagating inside the light-guide element and produces a second light that is used to provide a visual effect.

    HANDHELD DEVICE AND POSITIONING METHOD THEREOF
    5.
    发明申请
    HANDHELD DEVICE AND POSITIONING METHOD THEREOF 审中-公开

    公开(公告)号：US20170371425A1

    公开(公告)日：2017-12-28

    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

    CPC classification number: G06F3/0304 ,  G06F3/0346 ,  G06F3/0383

    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.

    HANDHELD POINTER DEVICE AND POINTER POSITIONING METHOD THEREOF
    8.
    发明申请
    HANDHELD POINTER DEVICE AND POINTER POSITIONING METHOD THEREOF 有权
    手持式指针装置及其定位方法

    公开(公告)号：US20150054745A1

    公开(公告)日：2015-02-26

    申请号：US14536769

    申请日：2014-11-10

    Applicant: PIXART IMAGING INC.

    Inventor： HAN-PING CHENG ,  CHAO-CHIEN HUANG

    IPC: G06F3/033

    CPC classification number: G06F3/0304 ,  G06F3/0346 ,  G06F3/0383

    Abstract: A pointer positioning method for a handheld pointer device includes: capturing a first frame containing a reference point when the handheld pointer device updates a first tilt angle presently used to a second tilt angle; computing a first pointing coordinate according to the image position of the reference point in the first frame and the first tilt angle; computing a second pointing coordinate according to the image position of the reference point in the first frame and the second tilt angle; capturing a second frame containing the reference point to compute a third pointing coordinate according to the image position of the reference point in the second frame and the second tilt angle; generating a cursor parameter for controlling a display position of a cursor on a display apparatus according to the first pointing coordinate, the second pointing coordinate, and the third pointing coordinate.

    Abstract translation: 一种用于手持式指针装置的指针定位方法包括：当手持式指针装置将当前使用的第一倾斜角更新为第二倾斜角时，捕获包含参考点的第一帧; 根据第一帧中的参考点的图像位置和第一倾斜角度来计算第一指向坐标; 根据第一帧中的参考点的图像位置和第二倾斜角计算第二指示坐标; 捕获包含所述参考点的第二帧，以根据所述参考点在所述第二帧中的图像位置和所述第二倾斜角来计算第三指示坐标; 生成用于根据第一指示坐标，第二指示坐标和第三指示坐标来控制显示装置上的光标的显示位置的光标参数。

    HANDHELD POINTER DEVICE AND TILT ANGLE ADJUSTMENT METHOD THEREOF
    9.
    发明申请
    HANDHELD POINTER DEVICE AND TILT ANGLE ADJUSTMENT METHOD THEREOF 审中-公开
    手柄指针装置和倾斜角调整方法

    公开(公告)号：US20140247214A1

    公开(公告)日：2014-09-04

    申请号：US14273523

    申请日：2014-05-08

    Applicant: PIXART IMAGING INC.

    Inventor： HAN-PING CHENG ,  CHAO-CHIEN HUANG ,  CHIA-CHEUN LIANG

    IPC: G06F3/033

    CPC classification number: G06F3/033 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0346

    Abstract: An exemplary embodiment of the present disclosure provides a handheld pointer device and a tilt angle adjustment method thereof. The tilt angle adjustment method includes the following steps. Images corresponding to the position of a reference point are captured as the handheld pointer device pointing toward the reference point to generate a plurality of frames. Whether the reference point has substantially moved is subsequently determined based on the plurality of frames. When determines that the reference point has not substantially moved, causes an accelerometer unit of the handheld pointer device to detect the accelerations thereof over various axes so as to update a first tilt angle being used currently to a second tilt angle, accordingly. The handheld pointer device may thus accurately and efficiently calculate the relative position of the reference point with the appropriate tilt angle of the handheld pointer device used.

    Abstract translation: 本公开的示例性实施例提供了一种手持式指针装置及其倾斜角调整方法。 倾斜角度调整方法包括以下步骤。 捕获与参考点的位置相对应的图像作为指向参考点的手持式指针装置，以生成多个帧。 随后基于多个帧来确定参考点是否已经基本上移动。 当确定参考点没有实质上移动时，引起手持式指针装置的加速度计单元检测其在各种轴上的加速度，从而相应地将当前使用的第一倾斜角度更新为第二倾斜角度。 因此，手持式指针装置可以使用所使用的手持式指针装置的适当倾斜角精确有效地计算参考点的相对位置。

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