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Proceedings Paper

Auto-And Hetero-Associative Memory Using A 2-D Optical Logic Gate
Author(s): Tien-Hsin Chao
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Paper Abstract

An optical associative memory system suitable for both auto- and hetero-associative recall is demonstrated. This system utilizes Hamming distance as the similarity measure between a binary input and a memory image with the aid of a 2-D optical EXCLUSIVE OR (XOR) gate and a parallel electronics comparator module. Based on the Hamming distance measurement, this optical associative memory performs a nearest neighbor search and the result is displayed in the output plane in real-time. This optical associative memory is fast and noniterative and produces no output spurious states as compared with that of the Hopfield neural network model.

Paper Details

Date Published: 29 June 1989
PDF: 7 pages
Proc. SPIE 1053, Optical Pattern Recognition, (29 June 1989);
Show Author Affiliations
Tien-Hsin Chao, Jet Propulsion Laboratory (United States)

Published in SPIE Proceedings Vol. 1053:
Optical Pattern Recognition
Hua-Kuang Liu, Editor(s)

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