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    Wireless power system with interference avoidance
    2.
    发明授权
    Wireless power system with interference avoidance 有权

    公开(公告)号：US10594170B2

    公开(公告)日：2020-03-17

    申请号：US15882651

    申请日：2018-01-29

    申请人： Apple Inc.

    发明人： David R. Falkenburg ,  Cortland S. Tolva ,  James R. Walker ,  Samuel B. Schaevitz

    IPC分类号： H02J50/80 ,  H02J50/12 ,  H02J7/02

    摘要： A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may transmit wireless power at a wireless power transmission frequency. Wireless power signals at the wireless power transmission frequency can create interference with a sensitive electrical component in the wireless power receiving device when the wireless power transmission frequency lies in a sensitive frequency band associated with the component. Measurement circuitry in the wireless power receiving device can measure the wireless power transmission frequency. In response to determining that the wireless power transmission frequency lies in a sensitive frequency band, the wireless power receiving device may send an in-band wireless power level adjustment request to the wireless power transmitting device. The request causes a frequency adjustment that moves the wireless power transmission frequency out of the sensitive band.

    Wireless power system with interference avoidance
    4.
    发明授权
    Wireless power system with interference avoidance 有权

    公开(公告)号：US11271439B2

    公开(公告)日：2022-03-08

    申请号：US16820379

    申请日：2020-03-16

    申请人： Apple Inc.

    发明人： David R. Falkenburg ,  Cortland S. Tolva ,  James R. Walker ,  Samuel B. Schaevitz

    IPC分类号： H02J50/80 ,  H02J50/12

    摘要： A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may transmit wireless power at a wireless power transmission frequency. Wireless power signals at the wireless power transmission frequency can create interference with a sensitive electrical component in the wireless power receiving device when the wireless power transmission frequency lies in a sensitive frequency band associated with the component. Measurement circuitry in the wireless power receiving device can measure the wireless power transmission frequency. In response to determining that the wireless power transmission frequency lies in a sensitive frequency band, the wireless power receiving device may send an in-band wireless power level adjustment request to the wireless power transmitting device. The request causes a frequency adjustment that moves the wireless power transmission frequency out of the sensitive band.

    Wireless power system with power management
    5.
    发明授权
    Wireless power system with power management 有权

    公开(公告)号：US10608474B2

    公开(公告)日：2020-03-31

    申请号：US15881336

    申请日：2018-01-26

    申请人： Apple Inc.

    发明人： Samuel B. Schaevitz ,  Cortland S. Tolva ,  James R. Walker

    IPC分类号： H02J50/12 ,  H02J50/80 ,  H02J7/02 ,  H04B5/00 ,  H02J50/40 ,  H01Q1/24 ,  H04L27/06 ,  H04L27/14

    摘要： A wireless power receiving device may have wireless power receiving circuitry with a coil and rectifier. The wireless power receiving circuitry receives wireless power signals and uses the rectifier to supply a corresponding output. The output is characterized by a current, a voltage, and a power equal to a product of the current and voltage. The output of the rectifier is supplied to a direct-current-to-direct-current power regulator integrated circuit, which supplies direct-current power to a system load and battery. A controller integrated circuit directs the power regulator circuit to dither the current while monitoring for a peak in the power. If the power regulator circuit dithers the current satisfactorily, the wireless power receiving circuitry may be operated at the peak power. If the power regulator circuitry does not dither the current in response to being directed to dither the current, a wireless power transmission level may be reduced.

    Wireless Power System With Power Management
    6.
    发明申请
    Wireless Power System With Power Management 审中-公开

    公开(公告)号：US20190067995A1

    公开(公告)日：2019-02-28

    申请号：US15881336

    申请日：2018-01-26

    申请人： Apple Inc.

    发明人： Samuel B. Schaevitz ,  Cortland S. Tolva ,  James R. Walker

    IPC分类号： H02J50/12 ,  H02J50/80 ,  H02J7/02

    摘要： A wireless power receiving device may have wireless power receiving circuitry with a coil and rectifier. The wireless power receiving circuitry receives wireless power signals and uses the rectifier to supply a corresponding output. The output is characterized by a current, a voltage, and a power equal to a product of the current and voltage. The output of the rectifier is supplied to a direct-current-to-direct-current power regulator integrated circuit, which supplies direct-current power to a system load and battery. A controller integrated circuit directs the power regulator circuit to dither the current while monitoring for a peak in the power. If the power regulator circuit dithers the current satisfactorily, the wireless power receiving circuitry may be operated at the peak power. If the power regulator circuitry does not dither the current in response to being directed to dither the current, a wireless power transmission level may be reduced.

    Transient Power Management Circuit
    8.
    发明申请
    Transient Power Management Circuit 有权

    公开(公告)号：US20210075214A1

    公开(公告)日：2021-03-11

    申请号：US16739277

    申请日：2020-01-10

    申请人： Apple Inc.

    发明人： Samuel B. Schaevitz ,  Nicholas D. Shourounis ,  Justin D. Schunick

    IPC分类号： H02H9/00 ,  H02M3/04

    摘要： An electronic device can include a battery bus, a load having a transient power requirement, and a transient power management circuit coupled between the battery bus and the load and configured to meet the transient instantaneous power requirement of the load while maintaining a minimum voltage on the battery bus. The transient power management circuit can include a boost converter coupled between the battery bus and a capacitor bank, and the load may be coupled to the capacitor bank. A control circuit may be configured to operate the boost converter to charge the capacitor bank. A control switch may be coupled between the boost converter and the capacitor bank, and the control circuit may be further configured to limit inrush current into the capacitor bank. Additionally, a state of charge of the battery may be estimated from a time required to charge the capacitor bank.

    AUDIO OUTPUT SYSTEM FOR A WIRELESSLY LOCATABLE TAG
    9.
    发明申请
    AUDIO OUTPUT SYSTEM FOR A WIRELESSLY LOCATABLE TAG 有权

    公开(公告)号：US20220004835A1

    公开(公告)日：2022-01-06

    申请号：US17478364

    申请日：2021-09-17

    申请人： Apple Inc.

    发明人： Justin D. Crosby ,  Ryan C. Perkins ,  Woojin Jung ,  Tatsuya Sano ,  Samuel B. Schaevitz ,  Christopher J. Walton ,  Christopher M. Werner

    IPC分类号： G06K19/077 ,  G06K19/07

    摘要： A wirelessly locatable tag may include a first housing member defining a first exterior surface of the wirelessly locatable tag and an interior surface opposite the first exterior surface. The wirelessly locatable tag may further include a second housing member defining a second exterior surface of the wirelessly locatable tag a first antenna configured transmit the wireless signal using a first wireless protocol, a second antenna configured to communicate using a second wireless protocol different than the first wireless protocol, and an audio system. The audio system may include a magnet assembly configured to produce a magnetic field and a coil positioned within the magnetic field and coupled to the interior surface of the first housing member, the coil configured to interact with the magnetic field to impart a force on the first housing member, thereby moving a portion of the first housing member to produce an audible output.