Optical read/write device

Details Optical read/write device Optical read/write device

1986-10-31

1988-06-07

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 45, 369 13, 250201, 360 59, G11B 2110

Patent

active

047501529

ABSTRACT:
An apparatus for reading data to and from a moving magneto-optical recording medium includes a carriage which is moved across data tracks contained in the medium. Optics for focusing a spot of light on the medium and a mechanism for fine tracking of the spot on a selected track are carried on the carriage and are movable independently of the carriage in response to separately amplified servo signals which are derived from light which is reflected from the spot of light on the data-containing track.

REFERENCES:
patent: 3876841 (1975-04-01), Kramer et al.
patent: 4020278 (1977-04-01), Carre et al.
patent: 4025784 (1977-05-01), LeLureau et al.
"Magneto-Optics Packs a 5-cm Disk with 10 Megabytes", John Gosch, Electronics, Dec. 29, 1982, pp. 45,46.
"Digital Magneto-Optical Recorder" by I. Sander, M. Urner-Willie, pp. 240-244.
Miscellaneous Publications of Verbatim Corporation dated 6/85, including "Proposed 1987 Specifications", 1 p. and "On Track", vol. 1, No. 1, Issue No. 2, Jul., 1985, pp. 1-4.
"NCC Erasable" from Optical Memory News, Jul.-Aug., 1985, pp. 4,6,7.
"Optical 3-1/2-Inch Drive Adds Erasability", Carl Warren, Mini-Micro Systems, Jul. 1985, pp. 133,134,137,138,141.

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