Optical disc apparatus and seek processing method

Details Optical disc apparatus and seek processing method Optical disc apparatus and seek processing method

2011-08-09

2011-08-09

Haley, Joseph (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

07995428

ABSTRACT:
An optical disc apparatus of the present invention includes an optical head (103) including a lens disposed at a position shifted from a traverse axis in a tangential direction, a traverse motor (104) as a second moving unit that moves the optical head (103) in a direction traversing tracks of the optical disc (101), a number-of-tracks calculating part (123) that calculates, as the number of tracks to be sought, the number of tracks that the optical head will traverse when moving from a first address to a second address of the optical disc (101), a tracking-drive-signal-at-seek generating part (112) and a traverse-drive-signal-at-seek generating part (119) as seek controlling units that move a convergent point of an optical beam from the first address to the second address, and a number-of-tracks correcting part (124) that corrects the number of tracks to be sought according to a shift amount of the lens from the traverse axis.

REFERENCES:
patent: 7800989 (2010-09-01), Nishino
patent: 9-120634 (1997-05-01), None
patent: 11-120587 (1999-04-01), None
patent: 2002-117552 (2002-04-01), None
patent: 2002-329335 (2002-11-01), None

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