Tracking servo apparatus for disc-shaped optical record medium

Details Tracking servo apparatus for disc-shaped optical record medium Tracking servo apparatus for disc-shaped optical record medium

G - Physics

11

B

352/32.21

G11B 7/09 (2006.01) G11B 7/085 (2006.01)

Patent

CA 2000313

A gain crossover frequency in a tracking servo system for a disc-shaped optical record medium is lowered during an application of a track jump signal to the tracking servo system for jumping from one track to another, thereby removing the tracking jump operation from the servo system, and performing a sure-footed track jump operation; whereas, displacement of the scanning point, which is slower than the response speed corresponding to the lowered gain crossover frequency, is corrected even during the track jump operation.

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