Defect area management

Details Defect area management Defect area management

2003-08-08

2009-08-18

Feild, Joseph H (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053150, C369S059250, C369S094000

Reexamination Certificate

active

07577073

ABSTRACT:
A multi-layer optical writable disc (D) comprises at least two layers (L1, L2, . . . ) and at least two defect management areas (DF1, DF2, . . . ). A first defect management area (DF1) is positioned on a first layer (L1) of the at least two layers at a first radial position (RP1), and a second defect management area (DF2) is positioned on a second layer (L2) of the at least two layers at a second radial position (RP2). The first radial position (RP1) and second radial position (RP2) are different.

REFERENCES:
patent: 5878020 (1999-03-01), Takahashi
patent: 6002655 (1999-12-01), Ono et al.
patent: 6850469 (2005-02-01), Ogawa et al.
patent: 7000152 (2006-02-01), Lin
patent: 1329880 (2003-07-01), None

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