Optical disc recording-reproducing apparatus in which sector sub

Details Optical disc recording-reproducing apparatus in which sector sub Optical disc recording-reproducing apparatus in which sector sub

1991-05-15

1993-04-13

Sniezek, Andrew L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 54, 360 53, 371 30, G11B 700, G11B 2736, G11B 509

Patent

active

052028763

ABSTRACT:
In a plurality of sectors in a track of an optical disc, when defect sectors having defect are a lesser number than a predetermined number, a substitution sector in a first substitution area of the optical disc is substituted for the defect sector, and when the number of the defect sector is the predetermined number or more, the sectors of a substitution track in a second substitution area is substituted for entire sectors in the track, then a map data including the address of the track and the address of the substitution track are recorded in a map sector of a map sector area.

REFERENCES:
patent: 4821254 (1989-04-01), Sathod et al.
patent: 4833663 (1989-05-01), Satoh et al.
patent: 4835757 (1989-05-01), Abiko
patent: 4849956 (1989-07-01), Aizawa
patent: 4949326 (1990-08-01), Takagi et al.
patent: 4984230 (1991-01-01), Satoh et al.
patent: 5005165 (1991-04-01), Yamanaka et al.
patent: 5132956 (1992-07-01), Ichikawa
Optical Dic Standard, JTC1/SC23 N292, Oct. 25, 1989, pp. 1-103.

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