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. 08, 2013
Filed:
Dec. 01, 2008
Jens Pollmann-retsch, Aachen, DE;
Jens Pollmann-Retsch, Aachen, DE;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention describes a method of driving a gas-discharge lamp () wherein, at any one time, the lamp () is driven according to one of a plurality of different driving schemes (DS, DS) and the lamp power is controlled according to one of a plurality of different power control strategies (PCS, PCf, and wherein the lamp () is driven according to a first driving scheme (DS) prior to a trigger event (tsw) and, upon occurrence of the trigger event (tsw), a driving scheme switchover is effected so that the lamp () is subsequently driven according to a second driving scheme (DS), and wherein, in temporal dependence on the trigger event (tsw), a power controls strategy switch over is effected from a first power control strategy (PCs) to a second power control strategy (PCf) such that the lamp power is subsequently controlled according to the second power control strategy(PCf) for a time interval (tm, tf).