US 11,836,290 B2
Spread spectrum sensor scanning using resistive-inductive-capacitive sensors
Michael A. Kost, Austin, TX (US); Bruce E. Duewer, Austin, TX (US); Tejasvi Das, Austin, TX (US); Matthew Beardsworth, Austin, TX (US); and Anthony S. Doy, Austin, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Jan. 25, 2021, as Appl. No. 17/157,304.
Application 17/157,304 is a continuation of application No. 16/455,462, filed on Jun. 27, 2019, granted, now 10,948,313.
Claims priority of provisional application 62/810,797, filed on Feb. 26, 2019.
Prior Publication US 2021/0140797 A1, May 13, 2021
Int. Cl. G06F 3/01 (2006.01); G01D 5/14 (2006.01); G01D 5/24 (2006.01); G01D 5/20 (2006.01); G01D 5/16 (2006.01)
CPC G06F 3/016 (2013.01) [G01D 5/14 (2013.01); G01D 5/16 (2013.01); G01D 5/20 (2013.01); G01D 5/24 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system comprising:
at least one resistive-inductive-capacitive sensor in electrical communication with a human-machine interface such that human interaction with the human-machine interface causes a displacement in a mechanical member of the human-machine interface which in turn causes variance in an impedance of the at least one resistive-inductive-capacitive sensor; and
a control circuit configured to:
maintain timing parameters for operation of the at least one resistive-inductive-capacitive sensor; and
vary at least one of the timing parameters to control a spectrum associated with the at least one resistive-inductive-capacitive sensor, wherein the spectrum comprises one of a sensor activity spectrum of the at least one resistive-inductive-capacitive sensor and a current usage spectrum associated with electrical current delivered to the at least one resistive-inductive-capacitive sensor from a source of electrical energy.