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    Use of visible light signals for determining one or more parameters for presence detection
    3.
    发明授权
    Use of visible light signals for determining one or more parameters for presence detection 有权

    公开(公告)号：US11994606B2

    公开(公告)日：2024-05-28

    申请号：US17620953

    申请日：2020-06-29

    申请人： SIGNIFY HOLDING B.V.

    发明人： Stefan Marcus Verbrugh

    IPC分类号： G01S5/16 ,  G01S1/70 ,  H05B47/115 ,  H05B47/195

    CPC分类号： G01S5/16 ,  G01S1/7036 ,  H05B47/115 ,  H05B47/195

    摘要： A system is configured to obtain locations of a mobile device (1) and obtain presence detection information. The locations are determined using visible light signals and dead reckoning information recorded at different moments. The presence detection information indicates presence detected using presence sensor devices (31, 32) at the different moments. The system is further configured to obtain sensor locations and sensor fields of view, determine sensor orientations based on the locations of the mobile device, the sensor locations and the presence detection information, and determine a sensor coverage area (61, 62), comprising gaps in the sensor coverage area, based on the sensor locations, the sensor orientations and the sensor fields of view. The system is also configured to determine one or more parameters for presence detection based on the gaps in the sensor coverage area and output the parameters or a presence detection result which has been determined using the parameters.

    Electronic tracking device and related system
    5.
    发明授权
    Electronic tracking device and related system 有权

    公开(公告)号：US11879959B2

    公开(公告)日：2024-01-23

    申请号：US17686924

    申请日：2022-03-04

    申请人： CAST Group of Companies Inc.

    发明人： Gilray Densham ,  Andrew Gordon

    IPC分类号： G01S1/70 ,  G01S5/16

    CPC分类号： G01S1/7036 ,  G01S5/16

    摘要： A tracking beacon is provided that is trackable using image sensors. The beacon includes a housing with a lower portion and an upper portion. The upper portion include a light diffusing structure with protrusions to help scatter the emitted light in different directions. A light source is positioned within the housing, and electrical contacts are positioned on an external surface of the lower portion.

    WATER CATCHER FOR BEACON
    7.
    发明公开
    WATER CATCHER FOR BEACON 审中-公开

    公开(公告)号：US20230305092A1

    公开(公告)日：2023-09-28

    申请号：US18185606

    申请日：2023-03-17

    申请人： Sheaumann Laser, Inc.

    发明人： John Gary Sousa ,  Andrew Carlin ,  James Skinner

    IPC分类号： G01S1/70 ,  G02B5/00

    CPC分类号： G01S1/7034 ,  G02B5/001

    摘要： A beacon with a preferably anodized aluminum body, cylindrical in shape, and threaded. The exact diameter and thread size of a water catcher cap is defined by the accompanying MWIR/LWIR beacon it threads onto. The accompanying component male thread allows the water catching cover to be threaded down completely for when the MWIR/LWIR beacon is powered on, thus creating an IR iris for the beacon emission, also while cooling the MWIR/LWIR beacon by being able to capture water within its open space cavity between the accompanying component and the water catching cover wall. Further in a wet environment, the open nature of the water catching cover permits rapid quenching by ambient water and refill of water catcher. Alternatively, when thread in the upmost position it protects the accompanying MWIR/LWIR beacon point of emission.

    HIGH-PRECISION ANTI-INTERFERENCE VR SYSTEM AND OPERATION METHOD
    10.
    发明申请
    HIGH-PRECISION ANTI-INTERFERENCE VR SYSTEM AND OPERATION METHOD 有权

    公开(公告)号：US20220382365A1

    公开(公告)日：2022-12-01

    申请号：US17885836

    申请日：2022-08-11

    申请人： QINGDAO PICO TECHNOLOGY CO., LTD.

    发明人： Xiuzhi ZHANG ,  Hongwei ZHOU ,  Guanghui LIU ,  Hengjiang GUO

    IPC分类号： G06F3/01 ,  H04B1/715 ,  G01S1/70

    摘要： Provided is a high-precision anti-interference VR system, including a data selection module, a headset, and a handle matched with the headset, the data selection module selects and invokes an optical tracking module group and an electromagnetic tracking module group according to an optical FOV range; the optical tracking module group includes an optical display module and an optical tracking module, the optical display module emits a physical signal by adjusting on-off and brightness thereof; the optical tracking module obtains the physical signal emitted by the optical display module, and converts the physical signal into tracking information of the handle; the electromagnetic tracking module group includes an electromagnetic emission module and an electromagnetic receiving module, the electromagnetic emission module generates an electromagnetic signal through a driving circuit, and transmits the electromagnetic signal; and the electromagnetic receiving module receives the electromagnetic signal to complete electromagnetic tracking.