Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1990-02-13
1991-12-03
Levy, Stuart S.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
3692753, 369279, 235494, 235454, 235487, G06K 7015, G06K 710
Patent
active
050704907
ABSTRACT:
In an optical recording medium a substrate is provided having at least a recording surface and a recording layer on an area of the recording surface having a length in a longitudinal direction. A set of linear continuous tracking tracks is formed on the recording surface. The tracking tracks have a length which is greater in the longitudinal direction than the length of the recording layer with a constant distance between adjacent tracks, which distance is equal to or larger than twice the width of each track. Recording areas are arranged and constructed so as to record information irradiated with a light beam. Each of those areas is positioned between neighboring tracking tracks.
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patent: 4642803 (1987-02-01), Drexler
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patent: 4652730 (1987-03-01), Marshall
patent: 4730293 (1988-03-01), Pierce et al.
patent: 4787075 (1988-11-01), Matsuoka et al.
patent: 4853920 (1989-08-01), Hosoya et al.
patent: 4910725 (1990-03-01), Drexler et al.
Canon Kabushiki Kaisha
Levy Stuart S.
Weinhardt Robert
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