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:
Jan. 29, 2013
Filed:
Dec. 17, 2009
Won Sik Chong, Gyunggi-do, KR;
Jong Rak Kim, Gyunggi-do, KR;
Kyoung Ho Yoon, Gyunggi-do, KR;
Yoon Seok Seo, Incheon, KR;
Won Sik Chong, Gyunggi-do, KR;
Jong Rak Kim, Gyunggi-do, KR;
Kyoung Ho Yoon, Gyunggi-do, KR;
Yoon Seok Seo, Incheon, KR;
Samsung Electro-Mechanics Co., Ltd., Gyunggi-do, KR;
Abstract
There are provided a current balance circuit having a protection function that prevents the current balance circuit from being damaged during a preset time period by maintaining a constant level of power being supplied to the lamp, and a power supply. The current balance circuit having the protection function includes a current balance unit maintaining current balance of lamp driving power supplied to a lamp unit including a plurality of lamps, and a protection unit detecting the lamp driving power supplied to the lamp unit from the current balance unit, cutting-off the lamp driving power after a preset time period when the lamp operates abnormally, and controlling a voltage level of the lamp driving power to a preset reference voltage level or lower during the preset time period.