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.

Date of Patent:
May. 19, 2015

Filed:

Dec. 05, 2012
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Robert B. Ganton, San Diego, CA (US);

James V. Pieronek, San Diego, CA (US);

Rajeev D. Rajan, San Diego, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 33/08 (2006.01); H04M 3/00 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0857 (2013.01); H05B 37/02 (2013.01); H04M 3/00 (2013.01); H05B 33/0818 (2013.01); Y02B 20/346 (2013.01);
Abstract

A display circuit includes a first pulse width modulated (PWM) signal line coupled to a first switch, a second PWM signal line coupled to a second switch and the signal line, a transistor coupled to the second signal line between the first signal line and the second switch, a third switch coupled to a third PWM signal line, a fourth switch coupled to a fourth PWM signal line, a fifth switch coupled to a fifth PWM signal line, a light emitting diode (LED) including a red element coupled between the first and third switches, a green element coupled between the first and fourth switches, and a blue element coupled between the first and fifth switches, and an LED including a red element coupled between the second and third switches, a green element coupled between the second and fourth switches, and a blue element coupled between the second and fifth switches.


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