US Patent 11204670 False triggering prevention in a resonant phase sensing system
Patent 11204670 was granted and assigned to Cirrus Logic on December, 2021 by the United States Patent and Trademark Office.
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A system may include a resistive-inductive-capacitive sensor, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to at a plurality of periodic intervals, measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor. The system may also include a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency and a driving amplitude, wherein at least one of the driving frequency and the driving amplitude varies among the plurality of periodic intervals.
US Patent 11204670 False triggering prevention in a resonant phase sensing system
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