Read/write optical memory

Details Read/write optical memory Read/write optical memory

1989-07-31

1993-01-12

Nguyen, Hoa

Static information storage and retrieval

Radiant energy

Electroluminescent and photoconductive

365109, 365117, 369110, G11C 1122, G11C 1142

Patent

active

051795337

ABSTRACT:
An improved read/write optical disk is disclosed which is capable of being rewritten more than 10.sup.6 times. The disk utilizes a storage medium in which data is stored by causing a localized region of the storage medium to assume one of two states. The two states can be converted from one to another by the application of electric fields to the localized region of the storage medium. The localized region in question is selected by illuminating an area on an addressing layer directly above the region in question with light. The preferred embodiment utilizes a lead lanthanum zirconate titanate material for the storage medium.

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