WO/2004/029668 is referenced by 67 patents.

A defective area on a write-once type optical recording medium, e.g., such as a BD-WO, is effectively managed with a method that can efficiently replace and/or record data that has been recorded in a defective area of the disc, e.g., in a spare area of a data area of the BD-WO. During the reproduction of data, the data that has been recorded and replaced can be read out and reproduced from an area other than a spare area. New TDFL information may be recorded cumulatively with the previous TDFL information as defect management information for the defective area, or repeatedly recorded at least twice in a certain recording region, e.g., a recording region chosen from a lead-in area, the data area, and a lead-out area, so that the temporary defect list information can be accurately and reliably secured.

Optical disc, method and apparatus for managing a defective area on an optical disc of write once type
Application Number
Publication Number
Application Date
September 26, 2003
Publication Date
April 8, 2004
Kim Sung Dae
Park Yong Cheol
BAHNG Hae Cheol
Lg Electronics
G11B 07/00
G11B 11/00
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