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    PINNA PROXIMITY DETECTION
    1.
    发明申请
    PINNA PROXIMITY DETECTION 有权

    公开(公告)号：US20210225352A1

    公开(公告)日：2021-07-22

    申请号：US17143848

    申请日：2021-01-07

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Viral PARIKH ,  Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Vitaliy SAPOZHNYKOV ,  Nafiseh Erfanian SAEEDI ,  Thomas I. HARVEY ,  Robert LUKE

    IPC: G10K11/178

    Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

    PINNA PROXIMITY DETECTION
    3.
    发明申请
    PINNA PROXIMITY DETECTION 审中-公开

    公开(公告)号：US20200058285A1

    公开(公告)日：2020-02-20

    申请号：US16539092

    申请日：2019-08-13

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Viral PARIKH ,  Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Vitaliy SAPOZHNYKOV ,  Nafiseh ERFANIAN SAEEDI ,  Thomas I. HARVEY ,  Robert LUKE

    IPC: G10K11/178

    Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

    METHODS AND SYSTEMS FOR DETECTING AND MANAGING UNEXPECTED SPECTRAL CONTENT IN AN AMPLIFIER SYSTEM
    4.
    发明申请
    METHODS AND SYSTEMS FOR DETECTING AND MANAGING UNEXPECTED SPECTRAL CONTENT IN AN AMPLIFIER SYSTEM 有权

    公开(公告)号：US20220406152A1

    公开(公告)日：2022-12-22

    申请号：US17549399

    申请日：2021-12-13

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Dana J. TAIPALE ,  Jon D. HENDRIX ,  Emmanuel A. MARCHAIS

    IPC: G08B6/00

    Abstract: A method may include receiving, by a transducer driving system, a first signal for driving an amplifier that drives an electromagnetic load and receiving, by the transducer driving system, a second signal driven by the amplifier in order to control a feedback loop of the transducer driving system. The method may also include detecting unexpected spectral content in the second signal, declaring an indicator event based on the detected unexpected spectral content, determining whether the indicator event occurs in an undesired pattern, and in response to the indicator event occurring in the undesired pattern, modifying a behavior of the transducer driving system.

    ADAPTIVE ANC ON DEMAND
    5.
    发明申请
    ADAPTIVE ANC ON DEMAND 审中-公开

    公开(公告)号：US20200312295A1

    公开(公告)日：2020-10-01

    申请号：US16894207

    申请日：2020-06-05

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： K. Joshua BODON ,  Jon D. HENDRIX ,  Brian THORNOCK ,  Aaron TREPTOW ,  Shahram TADAYON

    IPC: G10K11/178 ,  H04R1/10

    Abstract: A method may include receiving a user trigger signal indicating a user desire to update characteristics of an adaptive filter, receiving an error microphone signal indicative of the output of the transducer and the ambient audio sounds at the transducer, wherein the transducer reproduces both a source audio signal for playback to a listener and an anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the transducer, implementing the adaptive filter having a response that generates the anti-noise signal to reduce the presence of the ambient audio sounds in the error microphone signal, determining an acoustic coupling of the transducer to an error microphone for producing the error microphone signal, and responsive to a change in the acoustic coupling, prompting a user to assert the user trigger signal to indicate user desire to update characteristics of the adaptive filter.

    PORTABLE ELECTRONIC DEVICE BATTERY STIMULATION
    6.
    发明申请
    PORTABLE ELECTRONIC DEVICE BATTERY STIMULATION 有权

    公开(公告)号：US20250023113A1

    公开(公告)日：2025-01-16

    申请号：US18352737

    申请日：2023-07-14

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Aleksey S. KHENKIN ,  Jon D. HENDRIX

    IPC: H01M10/42

    Abstract: A method of improving electrode wetting of a battery of a portable electronic device, the method implemented by the portable electronic device or battery-stimulation apparatus thereof, the method comprising: applying a stimulation signal, being a fluctuating or alternating electrical signal, to at least one terminal of the battery to stimulate a mechanical response of electrodes of the battery.

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