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US Patent 11644370 Force sensing with an electromagnetic load

Patent 11644370 was granted and assigned to Cirrus Logic on May, 2023 by the United States Patent and Trademark Office.

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Patent attributes

Patent Applicant

Cirrus Logic International Semiconductor Ltd.

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Emmanuel Marchais0

Kathryn Rose Holland0

Eric Lindemann0

Carl Lennart Ståhl0

Date of Patent

May 9, 2023

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Patent Application Number

165690470

Date Filed

September 12, 2019

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Patent Citations

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US Patent 10820100 Methods and apparatus for limiting the excursion of a transducer

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US Patent 10828672 Driver circuitry

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Patent Citations Received

US Patent 11868540 Determination of resonant frequency and quality factor for a sensor system

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US Patent 12085525 Gain and mismatch calibration for a phase detector used in an inductive sensor

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US Patent 12130159 Detecting and adapting to changes in a resonant phase sensing system having a resistive-inductive-capacitive sensor

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US Patent 11979115 Modulator feedforward compensation

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Patent Primary Examiner

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CPC Code

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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.

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