Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1989-04-13
1991-05-21
Levy, Stuart S.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 44250, 369 44280, G11B 700
Patent
active
050181238
ABSTRACT:
In an optical information recording medium of the type wherein information is recorded or reproduced when a light beam scans each of a plurality of mutually parallel tracking tracks, an auxiliary track is extended between the adjacent tracking tracks and has at least one portion in parallel with the tracking tracks. In a method of recording or reproducing information by scanning a light beam on each of a plurality of mutually parallel tracking tracks on the recording medium, the recording medium has an auxiliary track which is extended between the adjacent tracking tracks and which has at least one portion in parallel with the tracking tracks and the light beam is kicked in the parallel portion of the auxiliary track.
REFERENCES:
patent: 3195113 (1965-07-01), Giordano
patent: 3510058 (1970-05-01), Rabedeau
patent: 3876842 (1975-04-01), Bouwhuis
patent: 4094010 (1978-06-01), Pepper
patent: 4561082 (1985-12-01), Gerard et al.
patent: 4598393 (1986-07-01), Pierce
"Servo Disk with Overlapping Servo and Data Tracks" by Comstock, IBM Tech. Disc. Bul., vol. 16, No. 6, Nov. 1973, p. 1818.
Drexon Laser Memory Card Quarterly Report No. 4, 10/1983, pp. 18-22.
Aoki Akio
Enari Masahiko
Hosoya Hideki
Kawaguchi Fumiaki
Matsuoka Hiroshi
Canon Kabushiki Kaisha
Levy Stuart S.
Wells Kenneth B.
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