Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshio Fujimura0
Yuusuke Nishizaki0
Hiroshi Iizuka0
Kazunari Kushiyama0
Kenpei En0
Koudai Nakamura0
Date of Patent
March 4, 2014
0Patent Application Number
126077540
Date Filed
October 28, 2009
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A driver circuit is provided which comprises a series-connected unit having a light-emitting element and a current limiting inductor directly connected to the light-emitting element, a regenerative diode which is connected in parallel to the series-connected unit and which regenerates energy stored in the current limiting inductor, a transistor which controls a current flowing through the light-emitting element and the current limiting inductor, and a controller which controls an operation of the transistor, wherein the controller controls the transistor according to a voltage value of a power supply applied to the light-emitting element.
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