Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1994-02-28
1996-05-14
Epps, Georgia Y.
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
3692754, G11B 724
Patent
active
055174850
ABSTRACT:
An optical information recording medium includes: a substrate including first tracks having a first face and second tracks having a second face, the first face and the second face being optically at different positions in a direction of an incident light beam; and a recording layer provided on the substrate on which an optically detectable change is caused by irradiating the light beam; wherein the first and second tracks have an information recording area and an address area having a control information for the information recording area in a direction of the tracks, the address area has address pits in a part of the first tracks, the address pits being formed in a pattern according to specified code signals, and the information recording area has an portion on which information is recorded, the portion including at least the second tracks.
REFERENCES:
patent: 4985616 (1991-01-01), Nakamura et al.
patent: 5214635 (1993-05-01), Satoh et al.
patent: 5383176 (1995-01-01), Inui et al.
patent: 5399461 (1995-03-01), Van et al.
patent: 5406545 (1995-04-01), Kadowaki
patent: 5407720 (1995-04-01), Omata
Akahira Nobuo
Nishiuchi Ken'ichi
Ohno Eiji
Yamada Noboru
Dinh Tan
Epps Georgia Y.
Matsushita Electric - Industrial Co., Ltd.
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