Runout compensation for a coarse tracking servo system in an...

G - Physics – 11 – B

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352/32.2

G11B 17/02 (2006.01) G11B 19/10 (2006.01)

Patent

CA 1244942

ABSTRACT OF THE DISCLOSURE An optical disk storage unit has an access and tracking system with a microprocessor which stores a runout signal representing the eccentricity of the tracks and bands as a function of the rotation of the disk surface. The runout signal is summed with the output of the access and tracking system to compensate for eccentricity as the disk rotates.

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