Method for managing defective area on write-once optical...

Details Method for managing defective area on write-once optical... Method for managing defective area on write-once optical...

2008-05-13

2008-05-13

Huber, Paul W. (Department: 2627)

Dynamic information storage or retrieval

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

By medium defect indicative control signal

C369S053170

Reexamination Certificate

active

07372788

ABSTRACT:
A method for managing a defective area of a write-once optical recording medium, and an optical recording medium using the same, is provided. In an optical disc device for recording/reproducing data using an optical disc such as a BD-WO type disc, the method permits the normal reading and reproducing of recording data written on a defective area of the disc, through a replacement write operation for the recording data of the defective area. When a defect is detected within a predetermined recording sector of the optical disc during the recording process, the recording data is written on a spare area corresponding to the defective area and the thus written data is managed. To accomplish this during data recording, the method selectively searches a write location of temporary defect list (TDFL) information, which is effective before disc finalization, or defect list (DFL) information, which becomes effective upon execution of a disc finalization operation. The TDFL information is written in an assigned recording sector and includes one or more defective area data locators indicative of defective areas as detected. Write location information and identification information enable the selective search of the DFL information after disc finalization and are written, together with the DFL information, as disc definition information in a defect management area assigned to the disc's lead-in area.

REFERENCES:
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patent: 6667939 (2003-12-01), Miyamoto
patent: 6842580 (2005-01-01), Ueda et al.
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patent: 0 350 920 (1990-01-01), None
patent: 1 043 723 (2000-10-01), None
patent: WO 01/22416 (2001-03-01), None

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