US 11,755,154 B1
Cover layer detection for touch input devices
Guangtao Zhang, Cupertino, CA (US); Apexit Shah, Sunnyvale, CA (US); Heemin Yang, San Francisco, CA (US); Kevin D. Spratt, Santa Clara, CA (US); Mayank Garg, Santa Clara, CA (US); Nima Ferdosi, San Jose, CA (US); Vikram Garg, San Francisco, CA (US); William J. Esposito, Seattle, WA (US); and Tavys Q. Ashcroft, San Jose, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Mar. 3, 2022, as Appl. No. 17/653,439.
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/044 (2013.01) [G06F 3/0416 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computing device, comprising:
a processing device;
a touch input device in electronic communication with the processing device; and
a memory device in electronic communication with the processing device and having electronic instructions encoded thereon;
wherein the electronic instructions, when executed by the processing device, cause the processing device to:
receive a first signal obtained from the touch input device over a first duration of time while operating the touch input device using a first touch input detection setting, the first signal including a first signal pattern;
receive a second signal obtained from the touch input device over a second duration of time separate from the first duration of time while operating the touch input device using the first touch input detection setting, the second signal including a second signal pattern;
determine a difference between the first signal pattern and the second signal pattern;
determine whether a cover layer is positioned on the touch input device based on the difference between the first signal pattern and the second signal pattern; and
adjust the first touch input detection setting of the touch input device to a second touch input detection setting based on the difference between the first signal pattern and the second signal pattern.