Patents by Inventor Emmanuel Marchais

Emmanuel Marchais has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11933822
    Abstract: A method for estimating actuator parameters for an actuator, in-situ and in real-time, may include driving the actuator with a test signal imperceptible to a user of a device comprising the actuator during real-time operation of the device, measuring a voltage and a current associated with the actuator and caused by the test signal, determining one or more parameters of the actuator based on the voltage and the current, determining an actuator type of the actuator based on the one or more parameters, and controlling a playback signal to the actuator based on the actuator type.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: March 19, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: Jorge L. Reynaga, Marco A. Janko, Emmanuel A. Marchais, John L. Melanson
  • Patent number: 11908310
    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.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: February 20, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: Dana J. Taipale, Jon D. Hendrix, Emmanuel A. Marchais
  • Publication number: 20230336013
    Abstract: A method of adapting a battery charging profile of a battery may include monitoring one or more parameters associated with the battery during normal operation of a device powered from the battery and while the battery is simultaneously charged by a charger and is discharged by a dynamic system load of the device, determining an impedance of the battery based on the one or more parameters, determining a condition of the battery based on the impedance and the one or more parameters, and adapting the battery charging profile based on the condition.
    Type: Application
    Filed: April 4, 2023
    Publication date: October 19, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel A. MARCHAIS, Eric J. KING, John L. MELANSON
  • Patent number: 11779956
    Abstract: Driver circuitry for driving an electromechanical load with a drive output signal, the driver circuitry comprising: a first control loop operable to control the drive output signal based on a drive input signal; and a second control loop operable to control the drive output signal based on a current flowing through and/or a voltage induced across the electromechanical load, wherein the second control loop is configured to have a lower latency than the first control loop, and to control the drive output signal to compensate for an impedance of the electromechanical load.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: October 10, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Carl Lennart Ståhl, Emmanuel Marchais, Anthony Stephen Doy, John L. Melanson
  • Patent number: 11765499
    Abstract: In accordance with embodiments of the present disclosure, a method of driving a playback waveform to an electromagnetic actuator by a transducer driving system may include operating the transducer driving system in a first mode wherein the electromagnetic actuator is driven with the playback waveform in a closed loop to form a closed-loop voltage drive system that includes a negative impedance, operating the transducer driving system in a second mode wherein the electromechanical actuator is driven with the playback waveform in an open loop, and operating a mode switch for transitioning the transducer driving system to operate between the first mode and the second mode.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: September 19, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Jon D. Hendrix, Emmanuel A. Marchais, Nicholas Joseph, Bryant Tran, Marco A. Janko, Noel Preecs
  • Patent number: 11736093
    Abstract: A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load and, during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load. The method may also include implementing an adaptive filter to identify parameters of the mechanical impedance of the electromagnetic load, wherein an input of a coefficient control for adapting coefficients of the adaptive filter is a first signal derived from the back electromotive force signal and a target of the coefficient control for adapting coefficients of the adaptive filter is a second signal derived from the current signal.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: August 22, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Emmanuel Marchais, Pablo Peso Parada, Eric Lindemann
  • Publication number: 20230237886
    Abstract: A method for determining and mitigating over-excursion of an internal mass of an electromechanical transducer may include measuring a sensed signal associated with the electromechanical transducer in response to a driving signal driven to the electromechanical transducer, determining a non-linearity value based on the sensed signal, mapping the non-linearity value to a probability of over-excursion of the internal mass, and applying a gain to a signal path configured to generate the driving signal based on the probability.
    Type: Application
    Filed: December 14, 2022
    Publication date: July 27, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Marco A. JANKO, Filippo ROSSI, Hamid SEPEHR, Kyle WILKINSON, Emmanuel A. MARCHAIS, Vadim KONRADI, Anil LAL, Aleksey S. KHENKIN, Chin Huang YONG
  • Patent number: 11644370
    Abstract: A system for performing force sensing with an electromagnetic load may include a signal generator configured to generate a signal for driving an electromagnetic load and a processing subsystem configured to monitor at least one operating parameter of the electromagnetic load and determine a force applied to the electromagnetic load based on a variation of the at least one operating parameter.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: May 9, 2023
    Assignee: Cirrus Logic, Inc.
    Inventors: Emmanuel Marchais, Kathryn Rose Holland, Carl Lennart Ståhl, Eric Lindemann
  • Publication number: 20230030780
    Abstract: A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load and, during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load. The method may also include implementing an adaptive filter to identify parameters of the mechanical impedance of the electromagnetic load, wherein an input of a coefficient control for adapting coefficients of the adaptive filter is a first signal derived from the back electromotive force signal and a target of the coefficient control for adapting coefficients of the adaptive filter is a second signal derived from the current signal.
    Type: Application
    Filed: October 6, 2022
    Publication date: February 2, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel MARCHAIS, Pablo PESO PARADA, Eric LINDEMANN
  • Publication number: 20220408181
    Abstract: In accordance with embodiments of the present disclosure, a method of driving a playback waveform to an electromagnetic actuator by a transducer driving system may include operating the transducer driving system in a first mode wherein the electromagnetic actuator is driven with the playback waveform in a closed loop to form a closed-loop voltage drive system that includes a negative impedance, operating the transducer driving system in a second mode wherein the electromechanical actuator is driven with the playback waveform in an open loop, and operating a mode switch for transitioning the transducer driving system to operate between the first mode and the second mode.
    Type: Application
    Filed: January 11, 2022
    Publication date: December 22, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jon D. HENDRIX, Emmanuel A. MARCHAIS, Nicholas JOSEPH, Bryant TRAN, Marco A. JANKO, Noel PREECS
  • Publication number: 20220404398
    Abstract: A method for estimating actuator parameters for an actuator, in-situ and in real-time, may include driving the actuator with a test signal imperceptible to a user of a device comprising the actuator during real-time operation of the device, measuring a voltage and a current associated with the actuator and caused by the test signal, determining one or more parameters of the actuator based on the voltage and the current, determining an actuator type of the actuator based on the one or more parameters, and controlling a playback signal to the actuator based on the actuator type.
    Type: Application
    Filed: January 12, 2022
    Publication date: December 22, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jorge L. REYNAGA, Marco A. JANKO, Emmanuel A. MARCHAIS, John L. MELANSON
  • Publication number: 20220406152
    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.
    Type: Application
    Filed: December 13, 2021
    Publication date: December 22, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Dana J. TAIPALE, Jon D. HENDRIX, Emmanuel A. MARCHAIS
  • Patent number: 11509292
    Abstract: A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load and, during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load. The method may also include implementing an adaptive filter to identify parameters of the mechanical impedance of the electromagnetic load, wherein an input of a coefficient control for adapting coefficients of the adaptive filter is a first signal derived from the back electromotive force signal and a target of the coefficient control for adapting coefficients of the adaptive filter is a second signal derived from the current signal.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: November 22, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Emmanuel Marchais, Pablo Peso Parada, Eric Lindemann
  • Publication number: 20220359113
    Abstract: A system may include an electromagnetic actuator, a first coil configured to drive mechanical displacement of the electromagnetic actuator, a second coil configured to drive mechanical displacement of the electromagnetic actuator, and an inductance sensing subsystem having an inductance sensing path coupled to the first coil and the second coil.
    Type: Application
    Filed: January 4, 2022
    Publication date: November 10, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel A. MARCHAIS, Tejasvi DAS, Siddharth MARU
  • Publication number: 20220344958
    Abstract: A battery management system, may include an input configured to couple to a power supply, an output configured to couple to a battery, and battery management circuitry coupled between the power supply and the battery and configured to deliver electrical energy to the output at a significantly higher peak-to-average power ratio than receipt of electrical energy to the input.
    Type: Application
    Filed: August 6, 2021
    Publication date: October 27, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John L. MELANSON, Eric J. KING, Emmanuel MARCHAIS
  • Publication number: 20220320999
    Abstract: A power delivery system may include an inductive power converter comprising a shared connection to a shared voltage from a battery, multiple inductive phases, each of the multiple inductive phases configured to generate a respective voltage from the shared voltage, multiple regulated voltage connections, and one or more switches configured and arranged to selectively assign at least one of the multiple inductive phases to a regulated voltage connection selected from the multiple regulated voltage connections.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 6, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel MARCHAIS, Ross C. MORGAN, Ivan PERRY, Eric J. KING
  • Patent number: 11396031
    Abstract: Driver circuitry for driving an electromechanical load with a drive output signal based on a digital reference signal at a first sample rate, the drive output signal inducing a first electrical quantity at the electromechanical load, the driver circuitry comprising: a function block configured, based on said first electrical quantity, to digitally determine at a second sample rate higher than the first sample rate an adjustment signal indicative of a second electrical quantity which would be induced at a target output impedance of the driver circuitry due to said first electrical quantity; and a driver configured to generate the drive output signal based on the reference signal and the adjustment signal to cause the drive output signal to behave as if an output impedance of the driver circuitry has been adjusted to comprise the target output impedance, wherein the first electrical quantity is a current and the second electrical quantity is a voltage, or vice versa.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: July 26, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Carl Lennart Ståhl, Emmanuel Marchais, Anthony Stephen Doy, John L. Melanson
  • Publication number: 20220224127
    Abstract: A two-cell battery management system may include a switching network comprising a plurality of switches configured to electrically couple two battery cells to one another and a first load configured to receive electrical energy from the two battery cells and control circuitry configured to dynamically control the switching network among a plurality of switching configurations comprising a first switching configuration in which the first load is in parallel with both of the two battery cells, a second switching configuration in which the first load is in parallel with a first battery cell of the two battery cells and is electrically isolated from a second battery cell of the two battery cells, and a third switching configuration in which the first load is in parallel with the second battery cell and is electrically isolated from the first battery cell.
    Type: Application
    Filed: September 3, 2021
    Publication date: July 14, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel A. MARCHAIS, James M. NOHRDEN, John L. MELANSON
  • Patent number: 11333622
    Abstract: A method for determining a direct current impedance of a transducer may include receiving an input signal indicative of an electrical power consumed by the transducer and calculating, by a thermal model of the transducer, the direct current impedance based on the electrical power.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: May 17, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Emmanuel Marchais, Carl Lennart Ståhl, Eric Lindemann, Jason W. Lawrence, Dayong Zhou
  • Publication number: 20220137143
    Abstract: A method of management of a battery that powers a component of a device may include monitoring a terminal voltage and a terminal current of the battery under a load that is drawing a current on the battery to provide power to a component of the device and modeling the battery as a battery model that approximates a relationship between the monitored terminal voltage and terminal current over at least one of: a certain frequency range; a certain duration, a certain amplitude range, an applied load, a set of conditions of the battery, and a set of conditions of the load. The relationship between the terminal voltage and the terminal current may have a frequency-dependent characteristic including at least two time constants. The two time constants may represent a time-varying relationship between an input and output of the battery model.
    Type: Application
    Filed: September 1, 2021
    Publication date: May 5, 2022
    Inventors: John L. MELANSON, Emmanuel MARCHAIS, Eric J. KING, James T. NOHRDEN