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:
Feb. 17, 2015
Filed:
Feb. 15, 2011
Gye-hyun Cho, Bucheon, KR;
Sang-cheol Her, Seoul, KR;
Gye-Hyun Cho, Bucheon, KR;
Sang-Cheol Her, Seoul, KR;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
The present invention relates to a preheating control device controlling lamp preheating, a lamp driving device including the same, and a preheating control method thereof. A preheating control device according to an exemplary embodiment of the present invention generates a preheating control voltage that is changed according to a passage of a preheating time of a lamp and generation of a lamp current of the lamp. An oscillator signal having a frequency according to a preheating control voltage is generated, and if the lamp current is generated in the lamp, the preheating control voltage is changed to more than a predetermined reference voltage such that the frequency of the oscillator signal may be decreased.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile