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:
Aug. 21, 2007
Filed:
Sep. 15, 2004
Makoto Toyota, Saitama, JP;
Tatsuo Seki, Saitama, JP;
Yasuhiko Fukunaga, Saitama, JP;
Shuji Shikano, Tochigi, JP;
Makoto Toyota, Saitama, JP;
Tatsuo Seki, Saitama, JP;
Yasuhiko Fukunaga, Saitama, JP;
Shuji Shikano, Tochigi, JP;
Moritex Corporation, Tokyo, JP;
Abstract
A current to light emitting devices when an application voltage is at or higher than the lower limit voltage for lighting determined by the arrangement of the light emitting devices, and an identification circuit that outputs a current identification signal in accordance with an appropriate current for the lighting circuit when the application voltage is lower than the lower limit value for lighting, and the power supply comprises a driving power supply that applies a lighting voltage at or higher than the lower limit voltage for lighting, an identification power supply that applies an identification voltage at or lower than the lower limit voltage for lighting, a current setter that sets an appropriate current to be supplied to the lighting circuit based on the current identification signal outputted from the identification circuit.