US 12,474,803 B2
Correcting touch interference for active pen
Tom Vandermeijden, San Jose, CA (US); Guozhong Shen, Fremont, CA (US); and Ching-Hsung Wang, San Jose, CA (US)
Assigned to Synaptics Incorporated, San Jose, CA (US)
Filed by Synaptics Incorporated, San Jose, CA (US)
Filed on Mar. 7, 2024, as Appl. No. 18/598,852.
Application 18/598,852 is a continuation of application No. 17/750,292, filed on May 20, 2022, granted, now 11,960,681.
Claims priority of provisional application 63/224,368, filed on Jul. 21, 2021.
Prior Publication US 2024/0211075 A1, Jun. 27, 2024
Int. Cl. G06F 3/041 (2006.01); G06F 3/0354 (2013.01); G06F 3/044 (2006.01)
CPC G06F 3/04186 (2019.05) [G06F 3/03545 (2013.01); G06F 3/0442 (2019.05); G06F 3/0446 (2019.05)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining, by an input device, a first capacitive touch profile via a first plurality of electrodes disposed in a sensing region of the input device, wherein the first capacitive touch profile corresponds to a first axis of the sensing region;
obtaining, by the input device, a second capacitive touch profile via a second plurality of electrodes disposed in the sensing region of the input device, wherein the second capacitive touch profile corresponds to a second axis of the sensing region;
obtaining, by the input device, an active pen profile;
obtaining, by the input device, a corrected active pen profile by adjusting the active pen profile using the second capacitive touch profile, wherein the second capacitive touch profile includes touch information corresponding to a palm or finger disposed in the sensing region of the input device; and
determining, by the input device, a position of an active pen in the sensing region using the corrected active pen profile.