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. 27, 2007
Filed:
Jul. 25, 2006
Yukio Kunieda, Nagoya, JP;
Yukio Kunieda, Nagoya, JP;
DENSO Corporation, Kariya, JP;
Abstract
A method for controlling a discharge lamp by a power controlling device on an automobile vehicle includes a starting step and a switching step. The device supplies electricity to the lamp. In the starting step, the discharge lamp starts to emit a light such that the device supplies a first electricity. In the switching step, the device switches from the first electricity to a second electricity so that the lamp maintains to emit the light with the second electricity, which is smaller than the first electricity. In the switching step, a temperature of the lamp is decreased with a temperature gradient, which is equal to or smaller than a predetermined gradient.