US 12,463,643 B2
Baseline calculation for sensor system
Gregory C. Yancey, Austin, TX (US); Rahul Gawde, Lakeway, TX (US); Matthew Beardsworth, Austin, TX (US); Michael A. Kost, Cedar Park, TX (US); and Junsong Li, Austin, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on May 4, 2020, as Appl. No. 16/866,175.
Claims priority of provisional application 62/937,528, filed on Nov. 19, 2019.
Prior Publication US 2021/0152174 A1, May 20, 2021
Int. Cl. H03K 17/95 (2006.01); G06F 3/01 (2006.01); G06F 3/041 (2006.01); H03K 17/96 (2006.01)
CPC H03K 17/954 (2013.01) [G06F 3/016 (2013.01); G06F 3/0414 (2013.01); H03K 17/96 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method comprising:
receiving an input signal;
generating a baseline signal based on the input signal;
generating a corrected input signal by subtracting the baseline signal from the input signal;
determining a threshold level change of the input signal when the corrected input signal exceeds a level change threshold; and
responsive to the threshold level change:
updating the baseline signal to the level change threshold;
generating an output flag indicative of the threshold level change; and
outputting the generated output flag.