The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2013
Filed:
Nov. 20, 2009
Methods, systems and devices for crosstalk measurement and cancellation in optical proximity sensors
Chee Heng Wong, Singapore, SG;
Han Kang Chong, Singapore, SG;
Rani Ramamoorthy Saravanan, Singapore, SG;
Chee Heng Wong, Singapore, SG;
Han Kang Chong, Singapore, SG;
Rani Ramamoorthy Saravanan, Singapore, SG;
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
An optical proximity sensor and corresponding methods of measuring crosstalk in the sensor are disclosed. The amount of crosstalk generated between the light emitter and the light detector of an optical proximity sensor is measured and quantified according to one of two methods. The measured crosstalk may then be stored in a register or memory location and then subtracted from signals representative of signals indicative of the nearby presence of an object to be detected combined with crosstalk, thereby removing so the contribution or effect of crosstalk on such signals.