Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Norio Higashisaka0
Jun Takasou0
Date of Patent
November 25, 2008
0Patent Application Number
115499840
Date Filed
October 17, 2006
0Patent Primary Examiner
Patent abstract
A laser diode drive circuit includes a first transistor having a collector connected to an anode of a laser diode; a second transistor having a collector connected to a cathode of the laser diode; a constant current circuit connected between a ground point and emitters of the first and second transistors; a first high-pass filter connected between the base and the collector of the first transistor; and a second high-pass filter connected between the base and the collector of the second transistor.
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