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公开(公告)号：US11965944B2
公开(公告)日：2024-04-23
申请号：US17410980
申请日：2021-08-24
Applicant: Apple Inc.
Inventor： Guangwu Duan , Jian Guo , John Greer Elias , Savas Gider
IPC: G01R33/36 , G01R33/34 , G01R33/385
CPC classification number: G01R33/36 , G01R33/34 , G01R33/385
Abstract: Disclosed is a compact, multi-user magnetic tracking system. In an embodiment, a compactness is achieved by using a single coil and inertial sensors at the transmitter and magnetometers and inertial sensors at the receiver for sensing the magnetic field generated by the single coil and for determining a position and attitude of the receiver relative to the transmitter. The transmitter and receiver each include a wireless transceiver for exchanging clock synchronization data and sending transmitter attitude data to the receiver. In another embodiment, frequency or time division multiplexing is used to differentiate between multiple users of the multi-user magnetic tracking system.
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公开(公告)号：US11549823B2
公开(公告)日：2023-01-10
申请号：US17483122
申请日：2021-09-23
Applicant: Apple Inc.
Inventor： Guangwu Duan , Jian Guo , John Greer Elias , Savas Gider
Abstract: Disclosed is a compact 3-axis coil design for a magnetic tracking system. In an embodiment, compactness is achieved by using a 3-axis coil in the transmitter that includes a scaffold design with a side surface having a curved groove for guiding one or more windings of a z-axis coil, such that the physical geometry is not increased.
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公开(公告)号：US11422104B2
公开(公告)日：2022-08-23
申请号：US16854688
申请日：2020-04-21
Applicant: Apple Inc.
Inventor： Caleb C. Han , Brad G. Boozer , David MacNeil , Gregory B. Arndt , Patrick E. O'Brien , Roham Solasi , Tongbi T. Jiang , Ashwin Balasubramanian , William S. Lee , Manoj K. Bhattacharyya , Jiahui Liang , James G. Horiuchi , Savas Gider
Abstract: An electronic device can include a housing defining an internal volume and a pressure sensor assembly disposed in the internal volume and in communication with an ambient environment. The pressure sensor assembly can include a structure at least partially enclosing a sensor volume, a pressure sensor affixed to a die disposed in the sensor volume, and an exposed moisture detection conductor positioned in the sensor volume.
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公开(公告)号：US11860246B1
公开(公告)日：2024-01-02
申请号：US16782012
申请日：2020-02-04
Applicant: Apple Inc.
Inventor： Hong Pan , Jian Guo , John G. Elias , Savas Gider
IPC: G06F3/01 , G01R33/028 , G06F3/0346 , G01C19/56 , G02B27/01 , G01R33/00
CPC classification number: G01R33/028 , G01C19/56 , G01R33/0094 , G02B27/0101 , G06F3/012 , G06F3/0346 , G02B2027/0138
Abstract: Systems, methods, apparatuses and non-transitory, computer-readable mediums are disclosed for short-range position tracking using a stationary magnetic field gradient. In an embodiment, a method comprises: obtaining, by a sensing array of a device worn or held by a user in an environment, a measurement of a stationary magnetic field generated by a magnetic source in the environment, the stationary magnetic field being independent of an ambient magnetic field in the environment; determining based on the measurement, a change in the magnetic field over time; determining based on the measurement, a change in the magnetic field over distance; obtaining, by the processor, a rotation angle of the device; determining a velocity of the device based on the change in the magnetic field over time, the change in the magnetic field over distance and the rotation angle of the device; and integrating the velocity to obtain a position of the device.
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公开(公告)号：US11860244B2
公开(公告)日：2024-01-02
申请号：US17992860
申请日：2022-11-22
Applicant: Apple Inc.
Inventor： Savas Gider , Chaitanya Mudivarthi , Joyce M. Mullenix
CPC classification number: G01R33/0017 , G01R33/09
Abstract: Disclosed is a magnetometer architecture that couples one or more coils to a magnetic yoke to allow the reset of the magnetic yoke and one or more magnetic field sensors simultaneously after, for example, exposure to a large stray magnetic field. Also, disclosed is a magnetometer architecture that integrates separate magnetic pole pieces offset from the yoke that are each wound by a reset coil to allow reset of the one or more magnetic field sensors.
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Patent Agency Ranking
公开(公告)号：US20220090942A1
公开(公告)日：2022-03-24
申请号：US17483122
申请日：2021-09-23
Applicant: Apple Inc.
Inventor： Guangwu Duan , Jian Guo , John Greer Elias , Savas Gider
Abstract: Disclosed is a compact 3-axis coil design for a magnetic tracking system. In an embodiment, compactness is achieved by using a 3-axis coil in the transmitter that includes a scaffold design with a side surface having a curved groove for guiding one or more windings of a z-axis coil, such that the physical geometry is not increased.
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公开(公告)号：US20220065958A1
公开(公告)日：2022-03-03
申请号：US17410980
申请日：2021-08-24
Applicant: Apple Inc.
Inventor： Guangwu Duan , Jian Guo , John Greer Elias , Savas Gider
IPC: G01R33/36 , G01R33/385 , G01R33/34
Abstract: Disclosed is a compact, multi-user magnetic tracking system. In an embodiment, a compactness is achieved by using a single coil and inertial sensors at the transmitter and magnetometers and inertial sensors at the receiver for sensing the magnetic field generated by the single coil and for determining a position and attitude of the receiver relative to the transmitter. The transmitter and receiver each include a wireless transceiver for exchanging clock synchronization data and sending transmitter attitude data to the receiver. In another embodiment, frequency or time division multiplexing is used to differentiate between multiple users of the multi-user magnetic tracking system.
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公开(公告)号：US20240103100A1
公开(公告)日：2024-03-28
申请号：US17935013
申请日：2022-09-23
Applicant: Apple Inc.
Inventor： Jason Janesky , Savas Gider
IPC: G01R33/09
CPC classification number: G01R33/093 , G01R33/091
Abstract: Embodiments are disclosed for yoke structures for improved magnetometer performance. In an embodiment, a magnetometer comprises: a yoke structure comprising at least one hard magnetic layer and at least one soft magnetic layer arranged along a dimension of the yoke structure, where a first coercivity of the at least one hard magnetic layer is greater than a second coercivity of the at least one soft magnetic layer; and at least one magnetic sensing element located in proximity to the at least one soft magnetic layer. In another embodiment, a magnetometer comprises: a multilayer yoke structure comprising layers of non-magnetic material and magnetic material along a dimension of the yoke structure; and at least one magnetic sensing element located in proximity to the yoke structure.
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公开(公告)号：US11605774B2
公开(公告)日：2023-03-14
申请号：US17030275
申请日：2020-09-23
Applicant: Apple Inc.
Inventor： Majid Khan , Roberto M. Ribeiro , Savas Gider
IPC: H01L41/08 , H01L41/09 , H01L41/053 , G01S3/781
Abstract: Aspects of the subject technology relate to an apparatus including a housing, one or more piezoresistive elements and a magnetic actuator. The housing includes a membrane, and the piezoresistive elements are disposed on the membrane to sense a displacement due to a deflection of the membrane. The magnetic actuator is disposed inside a cavity of the housing. The magnetic actuator exerts a repulsive force onto the membrane to reduce the deflection of the membrane.
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公开(公告)号：US20210072176A1
公开(公告)日：2021-03-11
申请号：US16854688
申请日：2020-04-21
Applicant: Apple Inc.
Inventor： Caleb C. Han , Brad G. Boozer , David MacNeil , Gregory B. Arndt , Patrick E. O'Brien , Roham Solasi , Tongbi T. Jiang , Ashwin Balasubramanian , William S. Lee , Manoj K. Bhattacharyya , Jiahui Liang , James G. Horiuchi , Savas Gider
Abstract: An electronic device can include a housing defining an internal volume and a pressure sensor assembly disposed in the internal volume and in communication with an ambient environment. The pressure sensor assembly can include a structure at least partially enclosing a sensor volume, a pressure sensor affixed to a die disposed in the sensor volume, and an exposed moisture detection conductor positioned in the sensor volume.
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