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:
Jan. 31, 2012
Filed:
Aug. 07, 2007
Tom Munters, Hasselt, BE;
Pavel Pekarski, Aachen, DE;
Carsten Deppe, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention describes a method of driving a discharge lamp (), wherein a blackening value (N) is determined, which blackening value (N) represents a level of blackening of the interior of the lamp (), and a recovery parameter (, T) is calculate based on the blackening value (N). When the lamp power is increased above the saturation power level, the lamp () is driven according to the recovery parameter (, T) for the duration of a specific recovery time. The invention further describes a driving arrangement (), and a projector system () comprising a high-pressure discharge lamp () and such a driving arrangement ().