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. 20, 2013
Filed:
Dec. 10, 2010
Joseph Maurice Khayat, Bedford, NH (US);
Matthew Murdock, Nashua, NH (US);
Robert A. Priegnitz, Algonquin, IL (US);
Joseph Maurice Khayat, Bedford, NH (US);
Matthew Murdock, Nashua, NH (US);
Robert A. Priegnitz, Algonquin, IL (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Method and apparatus to control LED brightness are disclosed. An example method includes receiving a dimmer control signal; determining a cutoff point of the dimmer control signal; determining the position of a rising edge signal within the dimmer control signal; determining if the rising edge signal occurred before the cutoff point; and outputting an LED brightness signal indicating full brightness when the rising edge signal occurred before the cutoff point, and indicating a scaled brightness when the rising edge signal did not occur before the cutoff point.