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:
Apr. 21, 2015
Filed:
Sep. 23, 2013
Sansha Electric Manufacturing Company, Limited, Osaka-shi, Osaka-fu, JP;
Tatsuya Kawabata, Osaka, JP;
Hiroki Morimoto, Osaka, JP;
Sansha Electric Manufacturing Company, Limited, Osaka-Fu, JP;
Abstract
A power supply circuit () is responsive to an activating signal by supplying a discharge lamp () with an operating voltage on which a high voltage is temporality superposed. An insufficient current detecting circuit () detects abnormality of an output current supplied to the discharge lamp () from the power supply circuit (). A CPU () stops the operation of the power supply circuit () in response to detection of abnormality by the insufficient current detecting circuit (). An output nullification time period timer () nullifies the output of the insufficient current detecting circuit () for a predetermined time period measured from the supplying of the activating signal.