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. 01, 2015
Filed:
Jul. 23, 2010
Josef Osterried, Ottobrunn, DE;
Josef Osterried, Ottobrunn, DE;
OSRAM GmbH, Munich, DE;
Abstract
A circuit configuration for operating at least one LED, comprising: an input with a first input terminal (E) and a second input terminal (E) for coupling to a DC voltage supply (U); an output having a first output terminal (A) and a second output terminal (A) for providing an output current (IA) to the at least one LED; a micromirror arrangement () comprising a plurality of micromirrors; a first control device () configured for providing, at the output thereof, a first control signal (S) for the micromirror arrangement (), the first control signal (S) being synchronized to a first clock frequency (fc); a switching regulator (), the input thereof being coupled to the first input terminal (E) and the second input terminal (E), and the output thereof being coupled to the first output terminal (A) and the second output terminal (A), the switching regulator () comprising a switch (S); and a second control device () configured for providing, at the output thereof, a second control signal (Sb) for the switch (S) of the switching regulator (); wherein the second control signal (S) is synchronized to a second clock frequency (f), wherein the equation f=n*fapplies, where nε.