Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1990-03-05
1993-04-13
Young, Wayne R.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 44370, 369111, 369 44280, G11B 7085
Patent
active
052028658
ABSTRACT:
A track access control method and apparatus for an optical disk apparatus are disclosed. Where a locus of movement of an object lens through which a write beam and a read beam are projected onto an optical disk upon track accessing is offset from a straight line which passes the center of the optical disk, the positional relationship of the read beam and the write beam is controlled relatively in accordance with a track position so that, at any track position, the read beam and the write beam can be positioned on the same track.
REFERENCES:
patent: 4074085 (1978-02-01), Russell
patent: 4577301 (1986-03-01), Matthews et al.
patent: 4752922 (1988-06-01), MacAnally et al.
patent: 4841514 (1989-06-01), Tsuboi et al.
patent: 5031165 (1991-07-01), Fujita
Edun Muhammad
Fujitsu Limited
Young Wayne R.
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