Drive signal generation circuit

Details Drive signal generation circuit Drive signal generation circuit

2011-08-16

2011-08-16

Agustin, Peter Vincent (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

08000185

ABSTRACT:
A drive signal generation circuit comprising: a tracking signal output circuit to output a tracking signal based on an error signal indicating a track deviation of laser light output from the optical pickup relative to a track, the tracking signal being a signal for driving a motor to move an optical pickup in a radial direction of an optical disc to reduce the track deviation of the laser light; a stop signal output circuit to output a stop signal for driving the motor to stop moving the optical pickup in the radial direction; and a switch circuit to output the tracking signal as a drive signal for driving the motor when a level of an output signal from the optical pickup is higher than a predetermined level, and to output the stop signal as the drive signal when the level of the output signal is lower than the predetermined level.

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