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1708 条记录 (耗时 0.041 秒)

    MOBILE ROBOT AND CLIFF DETECTION METHOD THEREOF
    52.
    发明申请
    MOBILE ROBOT AND CLIFF DETECTION METHOD THEREOF 有权

    公开(公告)号：US20220110498A1

    公开(公告)日：2022-04-14

    申请号：US17353818

    申请日：2021-06-22

    申请人： PIXART IMAGING INC.

    发明人： Keen-Hun LEONG ,  Sai-Mun LEE ,  Ching-Geak CHAN

    IPC分类号： A47L11/40 ,  G05D1/02 ,  H04N5/235 ,  G06T7/507

    摘要： There is provided a mobile robot including a light source, an image sensor and a processor. The image sensor respectively captures bright image frames and dark image frames corresponding to the light source being turned on and turned off. The processor identifies that the mobile robot faces a cliff when a gray level variation between the bright image frames and the dark image frames is very small, and controls the mobile robot to stop moving forward continuously.

    OPTICAL SENSING SYSTEM AND OPTICAL NAVIGATION SYSTEM
    53.
    发明申请
    OPTICAL SENSING SYSTEM AND OPTICAL NAVIGATION SYSTEM 有权

    公开(公告)号：US20220107337A1

    公开(公告)日：2022-04-07

    申请号：US17063728

    申请日：2020-10-06

    申请人： PixArt Imaging Inc.

    发明人： KEEN-HUN LEONG ,  Yueh Mei Kim

    IPC分类号： G01P13/00 ,  G06K9/58 ,  G06K9/46 ,  G06K9/20

    摘要： an optical sensing system comprising: a processing circuit; a first calibration optical sensor, comprising a first sensor edge and a second sensor edge opposite to the first sensor edge; and a second calibration optical sensor, away from the first calibration optical sensor for a first distance, comprising a third sensor edge and a fourth sensor edge opposite to the third sensor edge. The processing circuit determines a target object has moved for a target distance if an object pattern of the target object moves from a first location in the first calibration sensor to a second location in the second calibration sensor, wherein a first sum of a second distance which is between the first location and the first sensor edge and a third distance between the second location and the third sensor edge equals to a reference distance.

    WEARABLE DEVICE AND METHOD FOR PERFORMING REGISTRATION PROCESS IN THE WEARABLE DEVICE
    54.
    发明申请
    WEARABLE DEVICE AND METHOD FOR PERFORMING REGISTRATION PROCESS IN THE WEARABLE DEVICE 有权

    公开(公告)号：US20220087529A1

    公开(公告)日：2022-03-24

    申请号：US17030546

    申请日：2020-09-24

    申请人： PIXART IMAGING INC.

    发明人： CHUN-CHIH CHEN ,  YUNG-CHANG LIN ,  MING-HSUAN KU

    IPC分类号： A61B5/00

    摘要： A wearable device and a method for performing a registration process in the wearable device are provided. The wearable device includes a light source, a light sensor and a microcontroller that performs the method. In the method, the light source is activated to emit a detection light and the light sensor senses a reflected light. A light intensity of the reflected light is calculated. A registration value is produced based on the light intensity. Specifically, the detection light with a specific frequency to be registered in the registration value is used as a reference to detect whether the wearable device is properly worn by a person. For example, since the wearable device can be worn on the person's wrist, the registration value is used to detect whether the wearable device is away from the wrist.

    PIXEL CIRCUIT SELECTING TO OUTPUT TIME DIFFERENCE DATA OR IMAGE DATA
    55.
    发明申请
    PIXEL CIRCUIT SELECTING TO OUTPUT TIME DIFFERENCE DATA OR IMAGE DATA 有权

    公开(公告)号：US20220070402A1

    公开(公告)日：2022-03-03

    申请号：US17395527

    申请日：2021-08-06

    申请人： PIXART IMAGING INC.

    发明人： Ren-Chieh LIU ,  Yi-Cheng CHIU

    IPC分类号： H04N5/374 ,  H01L27/146

    摘要： There is provided a pixel circuit capable of outputting time difference data or image data, and including a first temporal circuit and a second temporal circuit. The first temporal circuit is used to store detected light energy of a first interval and a second interval as the time difference data. The second temporal circuit is used to store detected light energy of the second interval as the image data. The pixel circuit is used to output a pulse width signal corresponding to the time difference data or the image data in different operating modes.

    FOREHEAD TEMPERATURE MEASUREMENT SYSTEM WITH HIGH ACCURACY
    56.
    发明申请
    FOREHEAD TEMPERATURE MEASUREMENT SYSTEM WITH HIGH ACCURACY 有权

    公开(公告)号：US20220061675A1

    公开(公告)日：2022-03-03

    申请号：US17385046

    申请日：2021-07-26

    申请人： PIXART IMAGING INC.

    发明人： Po-Wei YU ,  Yi-Chung CHEN ,  Ting-Yang CHANG ,  Chih-Ming SUN ,  Kai-Shun CHEN ,  Yen-Chang CHU

    IPC分类号： A61B5/01

    摘要： There is provided a forehead temperature measurement system including an image sensor, a thermal sensor and a processor. The image sensor is used to output an image frame. The thermal sensor is used to output a thermal image. The processor is used to determine a forehead region in the image frame, map the forehead region to the thermal image and identify a forehead temperature according to a forehead mapped region in the thermal image. The processor further calibrates or compensates the forehead temperature according to an area. of the forehead region.