Limbach & Limbach L.L.P.
Optical reproduction signal processing circuit for producing an RF signal and a servo signal with a high signal to noise ratio even though the RF signal component and the servo signal component partially overlap in frequency distribution
 A processing circuit for an optical reproduction signal provided with a signal generating unit for dividing an optical reproduction signal output from a photo detector and including a plurality of signal components into a plurality of signals having frequency regions corresponding to the respective plurality of signal components and performing current/voltage conversion on the divided optical reproduction signals and a correcting unit for adding the results of the current/voltage conversion of the signal components to correct the results of the current/voltage conversion. 
Sony Corporation
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G11B G11B G11B
inventional additional inventional
Motoi Kyoko Shunji
Kimura Suzuki Yoshimura