US 11,994,675 B2
Head-mounted device for tracking screen time
Ruofei Du, San Francisco, CA (US); and Maksym Dzitsiuk, San Leandro, CA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Filed by GOOGLE LLC, Mountain View, CA (US)
Filed on May 16, 2022, as Appl. No. 17/663,444.
Prior Publication US 2023/0367116 A1, Nov. 16, 2023
Int. Cl. G02B 27/00 (2006.01); G08B 25/01 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/0093 (2013.01) [G08B 25/016 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method, comprising:
capturing an eye image of an eye using an eye-tracking camera of a head-mounted device, the eye image being an image of a surface of the eye of a user wearing the head-mounted device;
analyzing the eye image to identify a screen reflection, the screen reflection corresponding to a screen that is positioned in front of the user and reflecting off the surface of the eye of the user;
starting a screen timer after the screen reflection is identified;
tracking the screen reflection over time; and
stopping the screen timer when the screen reflection is no longer identified.