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    Motion sensing using hall voltage signals
    2.
    发明授权
    Motion sensing using hall voltage signals 有权

    公开(公告)号：US10859407B2

    公开(公告)日：2020-12-08

    申请号：US16581661

    申请日：2019-09-24

    Applicant: Apple Inc.

    Inventor： Denis G. Chen ,  Arman Hajati ,  Manoj K. Bhattacharyya

    IPC: G01D5/20 ,  G01D5/14

    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.

    Angle detection of a rotating system using a single magnet and multiple hall sensors
    4.
    发明授权
    Angle detection of a rotating system using a single magnet and multiple hall sensors 有权

    公开(公告)号：US10557724B1

    公开(公告)日：2020-02-11

    申请号：US16145941

    申请日：2018-09-28

    Applicant: Apple Inc.

    Inventor： Manoj K. Bhattacharyya ,  Daniel Ray Bloom ,  Rajesh Anantharaman

    IPC: G01D5/14 ,  G06F3/01 ,  G01R33/038 ,  G01R33/09

    Abstract: An angular detection system including a magnet and sensors is disclosed. The magnet can be located on a rotating component and the sensors can be located on a stationary component, or vice versa. The magnet can generate a plurality of magnetic flux lines. The plurality of sensors can be located and spatially separated along the motion path of the magnet for detecting the magnetic flux densities. The strength of the magnetic flux lines sensed by a given sensor can be used to determine the location of the magnet along its motion path. The plurality of sensors can generate one or more signals indicative of the strength of the sensed magnetic field lines. Based on the strength of the magnetic flux lines, the location of the magnet, or both, the system can determine the angle of rotation of the device by using a polynomial function or a look-up table.

    Motion Sensing Using Hall Voltage Signals
    5.
    发明申请
    Motion Sensing Using Hall Voltage Signals 审中-公开

    公开(公告)号：US20200018622A1

    公开(公告)日：2020-01-16

    申请号：US16581661

    申请日：2019-09-24

    Applicant: Apple Inc.

    Inventor： Denis G. Chen ,  Arman Hajati ,  Manoj K. Bhattacharyya

    IPC: G01D5/20 ,  G01D5/14

    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.

    Spatially dependent correction of magnetic field sensor readings
    7.
    发明授权
    Spatially dependent correction of magnetic field sensor readings 有权

    公开(公告)号：US10809317B2

    公开(公告)日：2020-10-20

    申请号：US15692278

    申请日：2017-08-31

    Applicant: Apple Inc.

    Inventor： Manoj K. Bhattacharyya

    IPC: G01R33/02 ,  G01R33/00 ,  G01D5/20 ,  G01B7/008 ,  G01B7/14 ,  G01B7/30 ,  G01D5/14

    Abstract: In an embodiment, a method comprises: obtaining, by a sensing device on a ferromagnetic surface, a first magnetometer reading of magnetic flux density modified by the ferromagnetic surface in a first direction; obtaining, by the sensing device, a second magnetometer reading of magnetic flux density modified by the ferromagnetic surface in a second direction; obtaining, by the sensing device, sensitivity terms based on the first and second magnetometer readings; and storing, by the sensing device, the sensitivity terms and a location of the sensing device on the ferromagnetic surface.

    Motion sensing using hall voltage signals
    8.
    发明授权
    Motion sensing using hall voltage signals 有权

    公开(公告)号：US10436607B2

    公开(公告)日：2019-10-08

    申请号：US15674227

    申请日：2017-08-10

    Applicant: Apple Inc.

    Inventor： Denis G. Chen ,  Arman Hajati ,  Manoj K. Bhattacharyya

    IPC: G01D5/20 ,  G01D5/14

    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.

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