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    Device removal indication using different object proximity thresholds
    2.
    发明授权
    Device removal indication using different object proximity thresholds 有权

    公开(公告)号：US12204289B1

    公开(公告)日：2025-01-21

    申请号：US17018920

    申请日：2020-09-11

    Applicant: Apple Inc.

    Inventor： Nicholas P. Allec ,  Ueyn L. Block ,  Xiyu Duan

    IPC: G04G21/02 ,  A44C5/22 ,  G01N21/552 ,  G04G11/00

    Abstract: An electronic device includes a device body having a back surface, a band configured to fasten the device body to a user with the back surface facing a body part of the user, an optical sensor system, and a device removal detector. The optical sensor system has a first optical measurement path and a second optical measurement path. The first optical measurement path has a first optical path length that differs from a second optical path length of the second optical measurement path. The device removal detector is configured to generate a device removal indication responsive to either of, a first set of object proximity measurements received from the optical sensor system for the first optical measurement path, or a second set of object proximity measurements received from the optical sensor system for the second optical measurement path.

    Devices having matter differentiation detectors
    7.
    发明授权
    Devices having matter differentiation detectors 有权

    公开(公告)号：US11857298B1

    公开(公告)日：2024-01-02

    申请号：US17013217

    申请日：2020-09-04

    Applicant: Apple Inc.

    Inventor： Nicholas P. Allec ,  Albert E. Cerussi ,  Maximillian C. Bruggeman ,  Xiyu Duan ,  Ueyn L. Block

    IPC: A61B5/024 ,  G04B47/06 ,  A61B5/00 ,  G06F1/16

    CPC classification number: A61B5/02416 ,  A61B5/681 ,  G04B47/063 ,  G06F1/163

    Abstract: A wearable device includes a housing; a wrist band attached to the housing; first and second emitters positioned within the housing and configured to respectively emit, through a back of the housing, a first beam of electromagnetic radiation having a first infrared (IR) wavelength and a second beam of electromagnetic radiation having a second IR wavelength. The second IR wavelength is different from the first IR wavelength. The wearable device also includes a photodetector positioned within the housing and filtered to detect a set of electromagnetic radiation wavelengths including the first IR wavelength and the second IR wavelength; and a matter differentiation circuit configured to indicate, at least partly in response to signals indicating amounts of the first IR wavelength and the second IR wavelength received by the photodetector, whether the back of the housing is likely proximate to human tissue.

    Multi-pathway distance measurements for optical sensors
    8.
    发明授权
    Multi-pathway distance measurements for optical sensors 有权

    公开(公告)号：US12164027B1

    公开(公告)日：2024-12-10

    申请号：US17020659

    申请日：2020-09-14

    Applicant: Apple Inc.

    Inventor： Xiyu Duan ,  Nicholas P. Allec ,  Ueyn L. Block

    IPC: G01S17/08 ,  G01S7/48 ,  G01S7/4863

    Abstract: Disclosed herein are electronic devices, detectors, systems, and methods for estimating a distance to an exterior object. Light pulses from an emitter on the electronic device or detector are received by at least one pair of light detectors positioned at different distances from the emitter. One or more ratios of strengths of signals of the light detectors are used to determine the object's distance. The ratios may be compared to a proximity curve to obtain the object's distance. If the ratio exceeds a critical distance value, a determination may be made that the exterior object has been separated from the electronic device. Wearable electronic devices, such as smart watches, may use the detectors, systems, and methods to determine if a user is wearing the electronic device.

    Devices having matter differentiation detectors
    9.
    发明授权
    Devices having matter differentiation detectors 有权

    公开(公告)号：US12042255B2

    公开(公告)日：2024-07-23

    申请号：US18196953

    申请日：2023-05-12

    Applicant: Apple Inc.

    Inventor： Nicholas P. Allec ,  Albert E. Cerussi ,  Maximillian C. Bruggeman ,  Xiyu Duan ,  Ueyn L. Block

    IPC: A61B5/024 ,  A61B5/00 ,  G04B47/06 ,  G06F1/16

    CPC classification number: A61B5/02416 ,  A61B5/681 ,  G04B47/063 ,  G06F1/163

    Abstract: A wearable device includes a housing; a wrist band attached to the housing; first and second emitters positioned within the housing and configured to respectively emit, through a back of the housing, a first beam of electromagnetic radiation having a first infrared (IR) wavelength and a second beam of electromagnetic radiation having a second IR wavelength. The second IR wavelength is different from the first IR wavelength. The wearable device also includes a photodetector positioned within the housing and filtered to detect a set of electromagnetic radiation wavelengths including the first IR wavelength and the second IR wavelength; and a matter differentiation circuit configured to indicate, at least partly in response to signals indicating amounts of the first IR wavelength and the second IR wavelength received by the photodetector, whether the back of the housing is likely proximate to human tissue.

    Devices Having Matter Differentiation Detectors
    10.
    发明公开
    Devices Having Matter Differentiation Detectors 审中-公开

    公开(公告)号：US20230404419A1

    公开(公告)日：2023-12-21

    申请号：US18196953

    申请日：2023-05-12

    Applicant: Apple Inc.

    Inventor： Nicholas P. Allec ,  Albert E. Cerussi ,  Maximillian C. Bruggeman ,  Xiyu Duan ,  Ueyn L. Block

    IPC: A61B5/024 ,  G04B47/06 ,  G06F1/16 ,  A61B5/00

    CPC classification number: A61B5/02416 ,  G04B47/063 ,  G06F1/163 ,  A61B5/681

    Abstract: A wearable device includes a housing; a wrist band attached to the housing; first and second emitters positioned within the housing and configured to respectively emit, through a back of the housing, a first beam of electromagnetic radiation having a first infrared (IR) wavelength and a second beam of electromagnetic radiation having a second IR wavelength. The second IR wavelength is different from the first IR wavelength. The wearable device also includes a photodetector positioned within the housing and filtered to detect a set of electromagnetic radiation wavelengths including the first IR wavelength and the second IR wavelength; and a matter differentiation circuit configured to indicate, at least partly in response to signals indicating amounts of the first IR wavelength and the second IR wavelength received by the photodetector, whether the back of the housing is likely proximate to human tissue.

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