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:
Jul. 14, 2015
Filed:
Sep. 13, 2012
Hua Guan, San Diego, CA (US);
Sandeep Chaman Dhar, San Diego, CA (US);
Chunlei Shi, San Diego, CA (US);
Hua Guan, San Diego, CA (US);
Sandeep Chaman Dhar, San Diego, CA (US);
Chunlei Shi, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A method and apparatus for optimizing a light emitting diode (LED) operation range is provided. The method comprises the steps of: turning on at least one LED; and then measuring an anode voltage of the at least one LED; then measuring a cathode voltage of the at least one LED. Once the measurements are completed, a forward voltage of the at least one LED is calculated. After the calculation, the at least one LED is turned off and a power multiplexer switch threshold is set for that LED based on the measured anode and cathode voltages.