Optical data storage

Details Optical data storage Optical data storage

1982-07-19

1984-12-04

McElheny, Jr., Donald E.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

353 27A, 364518, 369 44, 369109, 369111, 369125, 369275, G11B 700, G03B 2300

Patent

active

044868707

ABSTRACT:
A thermoplastics data storage member carries information which can be imaged using non-coherent light and, in addition to and distinct from that information, control data which defines a two-coordinate system for the member which controls random access to the information. A reading apparatus comprises a non-laser optical system for imaging selected areas of the information and a servo-system, including a microprocessor and transducers for reading the control data, for positioning a reading head of the optical system in desired locations relative to the storage member. The invention affords cheap optical data bases readable by apparatus not requiring a laser optical system.

REFERENCES:
patent: 2283545 (1942-05-01), Eckert, Jr.
patent: 3351920 (1967-11-01), Harper et al.
patent: 3689692 (1972-09-01), Chung-Sen Ih
patent: 3715524 (1973-02-01), Adler
patent: 4142209 (1979-02-01), Hedlund et al.
patent: 4179743 (1979-12-01), Suzuki et al.

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