Opto-electronic memory systems

Details Opto-electronic memory systems Opto-electronic memory systems

1994-07-19

1995-04-25

Popek, Joseph A.

Static information storage and retrieval

Radiant energy

Liquid crystal

365112, 235454, G11C 1142

Patent

active

054105021

ABSTRACT:
In an opto-electronic memory system having a memory element (14), for example an optical data card, in which optically-encoded data is stored in rows of memory locations (17) and reading elements (10,12) comprising a photosensitive element array (12) and operable to read out stored data in response to illumination of the memory locations, data is stored at memory locations as colors representing different data values and the memory locations are addressed with reading light of different colors in sequence, thereby enabling higher data storage capacities to be obtained. The memory locations may be reflective or transmissive. The reading elements may comprise linear or two dimensional arrays of photosensitive elements.

REFERENCES:
patent: 4752820 (1988-06-01), Kurdiwa et al.
patent: 4896149 (1990-01-01), Buzak et al.
patent: 5262149 (1993-11-01), Shannon

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