Patent ID: 8258453

Claim:
A system configured for ambient light detection, proximity detection and motion detection, the system comprising: a front end configured to receive a detected light signal generated using a light detector, wherein the detected light signal is indicative of both detected ambient light as well as detected radio frequency (RF) pulsed light produced by a light source pulsed at an RF frequency; output a detected ambient light signal primarily indicative of the portion of the detected light signal that is indicative of detected ambient light; and output a detected RF light signal primarily indicative of the portion of the detected light signal that is indicative of the detected RF pulsed light; an ambient channel configured to produce one or more ambient output signal indicative of the detected ambient light in dependence on the detected ambient light signal; a proximity channel configured to produce one or more proximity output signal indicative of proximity of an object relative to the system, in dependence on the detected RF light signal; and a motion channel configured to produce one or more motion output signal indicative of motion of an object relative to the system, in dependence on the detected RF light signal.