Opto-electric hybrid associative memory

Details Opto-electric hybrid associative memory Opto-electric hybrid associative memory

1988-05-20

1990-11-20

Gossage, Glenn

Static information storage and retrieval

Associative memories

Ferroelectric cell

365215, 364900, 382 42, G11C 1500

Patent

active

049723480

ABSTRACT:
An opto-electric hybrid associative memory and corresponding storage and retrieval method employs a pair of spatial light modulators in tandem with polarization analyzer arrangements providing optical multiplication and employs multiple conversions between n.times.n matrices and n.sup.2 .times.n.sup.2 matrices, with the aid of a digital computer and a parallel analog processing circuit, to perform repetitive electrical correlation and conversion operations. Serial scanning of the optical patterns is avoided because the spatial light modulators employ photocathodes, microchannel plates and Pockels cells having back surfaces that are optically-reflective electrical-charge-storing surfaces of long retention capabilities. Repetitive cycling of reference patterns through the memory/method tend to restore missing portions of data.

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Commonly assigned copending patent application U.S. Ser. No. 07/203,909 (Attorney Docket No. NGB-585) filed on Jun. 8, 1988.

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