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:
Jun. 09, 2015
Filed:
Oct. 25, 2013
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Taro Arimoto, Hyogo, JP;
Yoichi Kono, Hyogo, JP;
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A discharge lamp operating apparatus including: a discharge lamp; an operating circuit; a voltage measuring unit; a magnetic field applying unit; and a control unit, wherein the voltage measuring unit measures the voltage of power at sampling intervals, the control unit calculates an average value VLof a group of the measured value of the voltage as a standard and an average value VLof a group of the measured value of the voltage for comparison after a predetermined time has elapsed from the measurement of the measured value of the voltage measured at the beginning from the group of the measured value of the voltage as a standard, and when the difference (VL−VL) between the average value VLand the average value VLexceeds a predetermined value, drives the magnetic field applying unit.