Disk having read-only and read-write areas

Details Disk having read-only and read-write areas Disk having read-only and read-write areas

1998-04-13

2000-12-19

Huber, Paul W.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 700

Patent

active

061635219

ABSTRACT:
A disk of the present invention includes a first storage area for reproducing data and a second storage area for recording and reproducing data, the number of sectors in each track in the first and second storage areas close to each other is larger in the first storage area than in the second storage area, and leading edges of sectors in each track in the first storage area are aligned in at least one line in a radius direction.

REFERENCES:
patent: 5204852 (1993-04-01), Nakagawa et al.
patent: 5373498 (1994-12-01), Tagiri
patent: 5568467 (1996-10-01), Inagaki et al.
patent: 5592452 (1997-01-01), Yoshimoto et al.
International Search Report for Application No. PCT/JP98/01732; Dated Dec. 17, 1998.

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