Optical memory for storing and retrieving information by light e

Details Optical memory for storing and retrieving information by light e Optical memory for storing and retrieving information by light e

1989-04-18

1990-11-06

Levy, Stuart S.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369288, 3692751, 430945, 3461351, 346762, G11B 724

Patent

active

049691414

ABSTRACT:
An optical disc memory for optically storing and retrieving information formed of a substrate and a recording layer supported on the substrate. The recording layer has a chemically stable dielectric material and a semiconductor which has an optical property that changes reversibly as a function of the intensity of a laser beam applied through the substrate. A multilayered optical disc memory having a substrate, a recording layer formed on the substrate and a metallic layer formed on the recording layer, and a method of optically storing and retrieving information by using the above-described optical disc memory, are also disclosed.

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patent: 4465767 (1984-08-01), Oba et al.
patent: 4499178 (1985-02-01), Wada et al.
patent: 4576895 (1986-03-01), Barton et al.
patent: 4614951 (1986-09-01), Osato et al.
patent: 4650742 (1987-03-01), Goto et al.
patent: 4816840 (1989-03-01), Osato et al.

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