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. 26, 2013
Filed:
Mar. 03, 2011
Carsten Deppe, Aachen, DE;
Holger Moench, Vaals, NL;
Tom Munters, Turnhout, BE;
Christofher Daniel Charles Hooijer, Eindhoven, NL;
Carsten Deppe, Aachen, DE;
Holger Moench, Vaals, NL;
Tom Munters, Turnhout, BE;
Christofher Daniel Charles Hooijer, Eindhoven, NL;
Koninklijke Philips N. V., Eindhoven, NL;
Abstract
A method for driving a high-pressure gas discharge lamp of a projector system, which is suitable to produce and to supply to a light valve device during a projection interval () a light beam of a basic color which is selected from several basic colors (G, R, B). The lamp is driven by a lamp current. During said projection interval light valves of the light valve device are controlled in a pulse width modulation manner to have each valve provide a respective wanted light integral over said projection interval. During at least one of a number of successive projection intervals associated with one basic color a magnitude of the lamp current is temporarily reduced for at least a time that all light valves can be controlled for said one basic color.