Optical disk drive device

G - Physics – 11 – B

Patent

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352/32.2

G11B 7/08 (2006.01) G11B 7/085 (2006.01) G11B 19/20 (2006.01)

Patent

CA 1306805

ABSTRACT OF THE DISCLOSURE A retract means comprises the signal instruction circuit for providing the number of tracks to be traversed, the access start instruction and the retract instrution and the reference voltage generating circuit responsive to these instructions to provide the residual track number and the carriage moving signal and operates such that, immediately before the drive device is stopped to operate, the carriage mounting the optical head thereon is moved by the access operation from any track to the first predetermined position according to the access start instruction and then moved from the first predetermined position to the second predetermined position according to the retract instruction at a predetermined reference speed.

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