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. 25, 2012
Filed:
Jun. 14, 2010
Jae-soon Choi, Gyonggi-do, KR;
Hak-hee Lee, Gyonggi-do, KR;
Il-young Jung, Gyonggi, KR;
Eung-woo Lee, Gyonggi, KR;
Jae-Soon Choi, Gyonggi-do, KR;
Hak-Hee Lee, Gyonggi-do, KR;
Il-Young Jung, Gyonggi, KR;
Eung-Woo Lee, Gyonggi, KR;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
An inverter according to exemplary embodiment of the present invention generates a plurality of feedback voltages corresponding to driving voltages of discharge lamps. The inverter generates a first minimum voltage having a smaller feedback voltage of a plurality of feedback voltages and compares the first minimum voltage and a short circuit reference voltage to determine a short circuit of at least two discharge lamps. Also, the inverter generates a plurality of feedback voltages corresponding to driving currents of a plurality of discharge lamps, generates a second minimum voltage having a smaller feedback voltage of a plurality of the feedback voltages, and compares the second minimum voltage and an open circuit reference voltage to determine the open circuit of the at least two discharge lamps.