Optical disk

Details Optical disk Optical disk

1993-05-07

1995-01-17

Hannaher, Constantine

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, G11B 724

Patent

active

053831764

ABSTRACT:
An optical disk including concentric or spiral grooves, a first series of pits formed in the interrupted portions, and a second series of pits formed in portions of lands. Both of the first and second series of pits represent address information. The portions of the lands and the interrupted portions of the grooves are located in different radial directions. With this arrangement, even when the optical disk has a reduced track pitch, accurate address information is obtained, achieving a high-density recording optical disk.

REFERENCES:
patent: 4535439 (1985-08-01), Satoh et al.
patent: 4947384 (1990-08-01), Suzuki et al.
patent: 4985616 (1991-01-01), Nakamura et al.
patent: 4985881 (1991-01-01), Saito et al.
patent: 5214635 (1993-05-01), Satoh et al.

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