Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2008-03-04
2008-03-04
Hindi, Nabil (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
Reexamination Certificate
active
11003173
ABSTRACT:
A recording pulse condition for obtaining a reproduction result which fulfills predetermined signal quality is sought by performing testwrite and reproduction after uniformly changing predetermined recording pulse conditions corresponding to all mark lengths (S1, S2). If good result is not obtained, a recording pulse condition for obtaining a reproduction result which fulfills predetermined signal quality is sought by performing testwrite and reproduction after changing a predetermined recording pulse condition corresponding to at least one mark length (S4, S5). Then, a recording pulse condition is determined (S3). Thus provided are method and apparatus for efficiently setting such a recording condition that can reduce the influence of difference in characteristics of writable optical disks and difference in characteristics of optical recording and reproducing apparatuses, and to provide a recording and reproducing apparatus.
REFERENCES:
patent: 6791926 (2004-09-01), Furumiya et al.
patent: 2000-200418 (2000-07-01), None
patent: 2004-139649 (2004-05-01), None
patent: 2000-182244 (2004-06-01), None
Adachi Yoshihisa
Maeda Shigemi
Conlin David G.
Edwards Angell Palmer & Dodge
Hindi Nabil
Sharp Kabushiki Kaisha
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