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:
Nov. 10, 2015
Filed:
Aug. 14, 2012
Applicant:
Karl Georg Waser, Graz, AT;
Inventor:
Karl Georg Waser, Graz, AT;
Assignee:
ams AG, Unterpremstaetten, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0854 (2013.01); H05B 33/0845 (2013.01); H05B 33/0851 (2013.01); G03B 2215/0567 (2013.01);
Abstract
A driver arrangement comprises a current regulator (), to which at least one light-emitting diode () can be connected, and a driver circuit () that is coupled to the current regulator () and features a measurement input () for receiving a measurement signal (SM) that is dependent on the operation of the at least one light-emitting diode (). The driver circuit () is designed for adjusting the current level of the current regulator current (IS) of the current regulator () in dependence on the measurement signal (SM) such that a light quantity (SL) emitted by the at least one light emitting diode () has a constant brightness value.