Backlight for touchless gesture detection

Abstract

A device and method to detect a gesture performed by an object in touch-less communication with the device are described. The device includes two or more ambient light sensors arranged at respective first surface locations of the device, each of the two or more ambient light sensors sensing light intensity at the respective first surface location. The device also includes one or more processors to control one or more light sources at respective second surface locations of the device based on the light intensity sensed by the two or more ambient light sensors, calibrate the two or more ambient light sensors based on the one or more light sources, and detect the gesture based on the light intensity sensed by each of the two or more ambient light sensors.

Dependencies are inferred from the claim text.