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:
Sep. 08, 2009
Filed:
Jul. 11, 2005
Christian Breuer, Munich, DE;
Andreas Huber, Maisach, DE;
Simon Lankes, Falkensee, DE;
Alwin Veser, Hallbergmoos, DE;
Christian Breuer, Munich, DE;
Andreas Huber, Maisach, DE;
Simon Lankes, Falkensee, DE;
Alwin Veser, Hallbergmoos, DE;
Osram Gesellschaft mit beschraenkter Haftung, Munich, DE;
Abstract
The present invention relates to a driver circuit for an HID lamp having a circuit arrangement for applying a radiofrequency signal for the purpose of starting the lamp and for applying a low-frequency signal for the purpose of operating the lamp after starting, the driver circuit being designed to drive the HID lamp, immediately after starting, using a radiofrequency signal for a period of time, the period of time being variable and depending on at least one operating parameter for the lamp which is set after starting. It also relates to a corresponding method for operating an HID lamp.