US 11,972,105 B2
Force sensing system and method
Hamid Sepehr, London (GB); Pablo Peso Parada, London (GB); Willem Zwart, Edinburgh (GB); Tom Birchall, London (GB); Michael Allen Kost, Cedar Park, TX (US); Tejasvi Das, Austin, TX (US); Siddharth Maru, Austin, TX (US); Matthew Beardsworth, Austin, TX (US); and Bruce E. Duewer, Round Rock, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Oct. 7, 2022, as Appl. No. 17/962,086.
Application 17/962,086 is a continuation of application No. 17/471,529, filed on Sep. 10, 2021, granted, now 11,507,267.
Application 17/471,529 is a continuation of application No. 17/076,489, filed on Oct. 21, 2020, granted, now 11,269,509, issued on Mar. 8, 2022.
Application 17/076,489 is a continuation of application No. 16/422,543, filed on May 24, 2019, granted, now 10,860,202, issued on Dec. 8, 2020.
Claims priority of provisional application 62/842,821, filed on May 3, 2019.
Claims priority of application No. 1817495 (GB), filed on Oct. 26, 2018.
Prior Publication US 2023/0052112 A1, Feb. 16, 2023
Int. Cl. G06F 3/0488 (2022.01); G06F 3/041 (2006.01); G01L 5/162 (2020.01); G01L 5/164 (2020.01); G01L 5/165 (2020.01); G01L 5/167 (2020.01)
CPC G06F 3/0488 (2013.01) [G06F 3/0412 (2013.01); G06F 3/0414 (2013.01); G01L 5/162 (2013.01); G01L 5/164 (2013.01); G01L 5/165 (2013.01); G01L 5/167 (2013.01); G06F 2203/04105 (2013.01); H04M 2250/22 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A sensor system comprising:
a sensor operable to generate a sensor signal indicative of a user input;
an input determination block operable to determine whether a defined user input has occurred based on the sensor signal; and
a parameter control block operable to control a system parameter based on the sensor signal so that operation of the sensor system is dependent on the sensor signal;
wherein the system parameter controls one or more of:
a scan rate at which samples from the sensor are obtained or processed by the input determination block or the parameter control block;
a conversion time, being a period of time over which a sample from the sensor is captured for conversion into a digital sample;
an amplitude, phase or frequency of a drive signal used to drive the sensor;
a voltage level of a supply voltage used to power at least one of the sensor, the input determination block and the parameter control block;
a clock frequency of a clock signal used to control at least one of the sensor, the input determination block and the parameter control block;
whether one or more components of the system are disabled or operated in a low-power mode;
whether signal filtering of the sensor signal is performed;
a signal-to-noise ratio of the sensor signal; and
power consumption of the sensor system.