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).
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Publication number: 20240134325Abstract: A method for intelligently generating a stimulus for use in characterization of parameters of a model of a battery may include dynamically analyzing a current drawn from the battery by a load, based on analysis of the current, determining a sink current for augmenting the current drawn by the load, and generating the sink current based on a determined need to update the parameters.Type: ApplicationFiled: April 27, 2023Publication date: April 25, 2024Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Samuel P. EBENEZER, Eric J. KING, Emmanuel A. MARCHAIS, Jon D. HENDRIX, Mohamed SABET
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Publication number: 20240133957Abstract: A method for estimating equivalent circuit model parameters of a battery may include measuring a battery voltage across terminals of the battery and a battery current drawn from the battery, decomposing the battery voltage and the battery current into a plurality of sub-bands, each sub-band of the plurality of sub-bands based on a time constant that characterizes a temporal behavior of the battery, for each sub-band of the plurality of sub-bands, estimating an equivalent resistance for such sub-band based on a spectral content of the battery voltage and battery current for such sub-band, and estimating an open circuit voltage of the battery based at least on the spectral content of the battery voltage and battery current present in one of the plurality of sub-bands and the equivalent resistances of the plurality of sub-bands.Type: ApplicationFiled: April 27, 2023Publication date: April 25, 2024Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Samuel P. EBENEZER, Emmanuel A. MARCHAIS, Eric J. KING
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Publication number: 20240136930Abstract: A method for intelligently generating a stimulus for use in characterization of parameters of a model of a battery may include dynamically analyzing a current drawn from the battery by a load, based on analysis of the current, determining an augmented current for augmenting the current drawn by the load, and generating the augmented current based on a determined need to update the parameters.Type: ApplicationFiled: August 24, 2023Publication date: April 25, 2024Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Samuel P. EBENEZER, Emmanuel A. MARCHAIS, Eric J. KING, John L. MELANSON
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Patent number: 11962180Abstract: 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: GrantFiled: April 1, 2021Date of Patent: April 16, 2024Assignee: Cirrus Logic Inc.Inventors: Emmanuel Marchais, Ross C. Morgan, Ivan Perry, Eric J. King
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Patent number: 11948739Abstract: 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: GrantFiled: January 4, 2022Date of Patent: April 2, 2024Assignee: Cirrus Logic Inc.Inventors: Emmanuel A. Marchais, Tejasvi Das, Siddharth Maru
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Patent number: 11933822Abstract: 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: GrantFiled: January 12, 2022Date of Patent: March 19, 2024Assignee: Cirrus Logic Inc.Inventors: Jorge L. Reynaga, Marco A. Janko, Emmanuel A. Marchais, John L. Melanson
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Patent number: 11908310Abstract: 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: GrantFiled: December 13, 2021Date of Patent: February 20, 2024Assignee: Cirrus Logic Inc.Inventors: Dana J. Taipale, Jon D. Hendrix, Emmanuel A. Marchais
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Publication number: 20230336013Abstract: 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: ApplicationFiled: April 4, 2023Publication date: October 19, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Emmanuel A. MARCHAIS, Eric J. KING, John L. MELANSON
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Patent number: 11779956Abstract: 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: GrantFiled: October 19, 2021Date of Patent: October 10, 2023Assignee: Cirrus Logic Inc.Inventors: Carl Lennart Ståhl, Emmanuel Marchais, Anthony Stephen Doy, John L. Melanson
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Patent number: 11765499Abstract: 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: GrantFiled: January 11, 2022Date of Patent: September 19, 2023Assignee: Cirrus Logic Inc.Inventors: Jon D. Hendrix, Emmanuel A. Marchais, Nicholas Joseph, Bryant Tran, Marco A. Janko, Noel Preecs
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Patent number: 11736093Abstract: 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: GrantFiled: October 6, 2022Date of Patent: August 22, 2023Assignee: Cirrus Logic Inc.Inventors: Emmanuel Marchais, Pablo Peso Parada, Eric Lindemann
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Publication number: 20230237886Abstract: 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: ApplicationFiled: December 14, 2022Publication date: July 27, 2023Applicant: 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
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Patent number: 11644370Abstract: 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: GrantFiled: September 12, 2019Date of Patent: May 9, 2023Assignee: Cirrus Logic, Inc.Inventors: Emmanuel Marchais, Kathryn Rose Holland, Carl Lennart Ståhl, Eric Lindemann
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Publication number: 20230030780Abstract: 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: ApplicationFiled: October 6, 2022Publication date: February 2, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Emmanuel MARCHAIS, Pablo PESO PARADA, Eric LINDEMANN
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Publication number: 20220408181Abstract: 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: ApplicationFiled: January 11, 2022Publication date: December 22, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Jon D. HENDRIX, Emmanuel A. MARCHAIS, Nicholas JOSEPH, Bryant TRAN, Marco A. JANKO, Noel PREECS
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Publication number: 20220404398Abstract: 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: ApplicationFiled: January 12, 2022Publication date: December 22, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Jorge L. REYNAGA, Marco A. JANKO, Emmanuel A. MARCHAIS, John L. MELANSON
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Publication number: 20220406152Abstract: 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: ApplicationFiled: December 13, 2021Publication date: December 22, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Dana J. TAIPALE, Jon D. HENDRIX, Emmanuel A. MARCHAIS
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Patent number: 11509292Abstract: 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: GrantFiled: September 3, 2019Date of Patent: November 22, 2022Assignee: Cirrus Logic, Inc.Inventors: Emmanuel Marchais, Pablo Peso Parada, Eric Lindemann
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Publication number: 20220359113Abstract: 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: ApplicationFiled: January 4, 2022Publication date: November 10, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Emmanuel A. MARCHAIS, Tejasvi DAS, Siddharth MARU
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Publication number: 20220344958Abstract: 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: ApplicationFiled: August 6, 2021Publication date: October 27, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: John L. MELANSON, Eric J. KING, Emmanuel MARCHAIS