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:
Sep. 17, 2013
Filed:
Mar. 31, 2011
Robert T. Grisamore, Austin, TX (US);
Firas S. Azrai, Austin, TX (US);
Mohit Sood, Austin, TX (US);
John L. Melanson, Austin, TX (US);
Eric J. King, Dripping Springs, TX (US);
Jean-charles Pina, Austin, TX (US);
Robert T. Grisamore, Austin, TX (US);
Firas S. Azrai, Austin, TX (US);
Mohit Sood, Austin, TX (US);
John L. Melanson, Austin, TX (US);
Eric J. King, Dripping Springs, TX (US);
Jean-Charles Pina, Austin, TX (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
In at least one embodiment, a lighting system receives an input signal, such as a supply voltage, that can be affected by a dimmer. The supply voltage can be affected by a dimmer when, for example, a dimmer phase cut (i.e. chopped) the supply voltage. A dimmer detection system of the lighting system determines if a dimmer is affecting the supply voltage. In at least one embodiment, the dimmer detection system also determines a type of the dimmer, such as detecting if the dimmer is a leading edge or trailing edge dimmer. In at least one embodiment, the dimmer detection system provides dimmer type data to one or more other circuits such as a switching power converter controller. The one or more other circuits utilize the dimmer type data to affect their operation.