US Patent No. 10,509,940

ELECTRONIC DEVICE INCLUDING SEQUENTIAL OPERATION OF LIGHT SOURCE SUBSETS WHILE ACQUIRING BIOMETRIC IMAGE DATA AND RELATED METHODS


Patent No. 10,509,940
Issue Date December 17, 2019
Title Electronic Device Including Sequential Operation Of Light Source Subsets While Acquiring Biometric Image Data And Related Methods
Inventorship Mohammad Yeke Yazdandoost, San Jose, CA (US)
Giovanni Gozzini, Berkeley, CA (US)
Dale R. Setlak, Merritt Island, FL (US)
Assignee APPLE INC., Cupertino, CA (US)

Claim of US Patent No. 10,509,940

1. An electronic device comprising:a dielectric cover layer defining a finger sensing surface;
at least one optical image sensor below the dielectric cover layer;
at least one optical element associated with the at least one optical image sensor;
a plurality of light sources below the dielectric cover layer and selectively operable in subsets of light sources; and
a controller configured to sequentially operate the subsets of light sources in a first pass in a first direction, and in a second pass in a second direction transverse to the first direction while acquiring biometric image data from the at least one optical image sensor.