US 12,105,885 B2
Touch control of wearable devices
Dongeek Shin, Santa Clara, CA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Appl. No. 18/006,096
Filed by GOOGLE LLC, Mountain View, CA (US)
PCT Filed Sep. 27, 2021, PCT No. PCT/US2021/071602
§ 371(c)(1), (2) Date Mar. 30, 2023,
PCT Pub. No. WO2023/048753, PCT Pub. Date Mar. 30, 2023.
Prior Publication US 2023/0418386 A1, Dec. 28, 2023
Int. Cl. G06F 3/01 (2006.01); G04G 21/02 (2010.01); G04G 21/08 (2010.01); G06F 3/03 (2006.01)
CPC G06F 3/017 (2013.01) [G04G 21/025 (2013.01); G04G 21/08 (2013.01); G06F 3/0304 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for controlling a wearable device, the method comprising:
transmitting light from a light source of a sensor of the wearable device when the wearable device is worn on a skin surface, the light including:
a first light component that is transmitted towards a first area of the skin surface covered by the wearable device; and
a second light component that is transmitted towards a second area of the skin surface that is not covered by the wearable device;
receiving back-reflected light at a detector on the sensor, the back-reflected light including a focused-light component from the first area and a stray-light component from the second area;
filtering the back-reflected light to isolate the stray-light component, the filtering based on the first light component being in a relatively low frequency band with respect to the second light component; and
analyzing the stray-light component to detect a touch in the second area.