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:
Oct. 25, 2011
Filed:
Oct. 29, 2008
Harald Sandner, Marzling, DE;
Christophe Vaucourt, Munich, DE;
Hans Schmeller, Woerth, DE;
Martin Rommel, Freising, DE;
Helmut Kiml, Tiefenbach, DE;
Harald Sandner, Marzling, DE;
Christophe Vaucourt, Munich, DE;
Hans Schmeller, Woerth, DE;
Martin Rommel, Freising, DE;
Helmut Kiml, Tiefenbach, DE;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method is provided for driving a plurality of light emitters in a plurality of output paths with each output path including at least one light emitter. The method includes the steps of applying a supply voltage level to a plurality of output paths; generating a current for each path during a period of a predetermined length for the output path; sensing a current level for each output path during the period; comparing each sensed current level with a reference level; increasing the supply voltage level if the sensed current level is lower than the reference level; determining a lowest supply voltage level for the worst case output path; and using the lower supply voltage level as a common supply voltage level for all output paths.