Optical memory disk and track access therefor

Details Optical memory disk and track access therefor Optical memory disk and track access therefor

1985-08-28

1989-11-28

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 44, 369 46, G11B 1722

Patent

active

048842591

ABSTRACT:
An optical memory disk has a recording layer which is disposed on one surface of a plain circular support base and has a plurality of radially spaced data tracks for storing data items therein, the data tracks being grouped into a number of data track groups. Each of the tracks is divided into a plurality of angularly consecutive sectors bearing a plurality of angularly equally spaced sector marks, respectively, the sector marks on the tracks of each of the data track groups being located in angularly different positions, respectively. There are also disclosed a method of and a system for rapidly and reliably accessing a desired target track among the data tracks on the optical memory disk.

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patent: 4016603 (1977-04-01), Ottesen
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patent: 4504873 (1985-03-01), Bandy et al.
patent: 4535439 (1985-08-01), Satoh et al.
patent: 4556966 (1985-12-01), Bricot et al.

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