Multi-layer optical disc, and recording method and apparatus...

Details Multi-layer optical disc, and recording method and apparatus... Multi-layer optical disc, and recording method and apparatus...

2011-01-11

2011-01-11

Feild, Joseph H (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S047500, C369S047510, C369S094000, C369S283000

Reexamination Certificate

active

07869317

ABSTRACT:
Each layer includes a data recording area and a test writing area divided into a plurality of small areas, wherein the small areas of the test writing area are recorded in advance so that other each layer can make a combination of recorded and unrecorded states with respect to the small area, where OPC is carried out, in a layer where OPC is carried out. Moreover, OPC is carried out to each small area, where a combination of recorded/unrecorded states of other each layer differs from each other, to thereby calculate, as the optimum power, an average value of the result of each OPC or a central value of the dispersion thereof.

REFERENCES:
patent: 2004/0076094 (2004-04-01), Toshiaki et al.
patent: 2005/0117480 (2005-06-01), Yun
patent: 2007/0041308 (2007-02-01), Muramatsu et al.
patent: 2000-311346 (2000-11-01), None
patent: 2003-22532 (2003-01-01), None

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