Li & Cai Intellectual Property (USA) Office
Proximity sensor with a sliced integration time sensing mechanism and sensing method thereof
A proximity sensor with a sliced integration time sensing mechanism and a sensing method thereof are provided. A light transmitter emits a sensing light toward a detected object during a first phase time. A light receiver receives a first light signal formed by the sensing light reflected by the detected object and an ambient light during the first phase time, and receives a second light signal of the ambient light during a second phase time. A first brightness of the first light signal is integrated over the first phase time to form a first integrated brightness value. A second brightness of the second light signal is integrated over the second phase time to form a second integrated brightness value. The light receiver subtracts the second integrated brightness value from the first integrated brightness value to obtain a first integrated brightness correction value by phase cancellation.
ANPEC ELECTRONICS CORPORATION
G G H H H Y
G01S G01S H05B H05B H01S Y02B
inventional inventional inventional inventional additional additional
Yi-Jung Jing-Min Chih-Ning
Huang Chen Chen