System and method for accessing tracks for optical disc...

Details System and method for accessing tracks for optical disc... System and method for accessing tracks for optical disc...

G - Physics

11

B

352/32.2

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

Patent

CA 1315879

ABSTRACT OF THE DISCLOSURE A system and method for accessing tracks for an optical disc apparatus are disclosed in which when a light spot is jumped toward a target track, an acceleration pulse is applies across a fine tracking actuator to accelerate the fine tracking actuator for a predetermined period of time, a relative speed of the light spot to the tracks of the optical disc is detected though a detection of a period of a traverse signal outputted due to a movement of the fine tracking actuator, and a control signal corresponding to the relative speed is used to control the movement speed of the fine tracking actuator. Therefore, before the end of a track jump, a constant relative speed can be achieved such that a smooth tracking servo can be carried out. Consequently, an access time to access the target track can be shortened.

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