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Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Manabu Shiozawa0
Kazutoshi Shigeta0
Date of Patent
January 11, 2011
0Patent Application Number
114938220
Date Filed
July 27, 2006
0Patent Primary Examiner
Patent abstract
The object of this invention is to provide an optical disc apparatus and an optical disc reproducing method that can realize an excellent reproducing operation by suppressing noise in the optical disc apparatus using an optical attenuator. In order to solve this object, a control voltage of the optical attenuator is changed according to reproduction power when reproducing the optical disc and an ambient temperature of the optical attenuator. In addition, the amplitude of a high frequency current for driving a laser diode is changed according to an attenuation factor of the optical attenuator.
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