Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2007-05-15
2007-05-15
Patel, Gautam R. (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S044320
Reexamination Certificate
active
10721181
ABSTRACT:
A data recording method according to one aspect of this invention comprises specifying a plurality of regions with different radial positions on a disk, and detecting the tilt amounts of the respective regions with respect to the optical axis of a light beam on the basis of a focus control signal used to just-focus the light beam on a recording surface of the disk, calculating tilt correction amounts for the respective regions in accordance with the tilt amounts of the respective regions, correcting a tilt of the optical axis with respect to a predetermined region on the basis of the tilt correction amount corresponding to the predetermined region, and recording data on the predetermined region while the tilt of the optical axis with respect to the predetermined region is corrected.
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patent: 6714496 (2004-03-01), Park et al.
patent: 6754145 (2004-06-01), Shimamoto et al.
patent: 60-066341 (1985-04-01), None
patent: 10-177729 (1998-06-01), None
patent: 2000-232677 (2000-08-01), None
Japanese Office Action dated Jan. 4, 2005 for Appln. No. 2002-347504.
Kabushiki Kaisha Toshiba
Patel Gautam R.
Pillsbury Winthrop Shaw & Pittman LLP
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