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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×n matrices and n2×n2 matrices, with the a

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×n matrices and n2×n2 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.

대표청구항 ▼

An opto-electrical hybrid associative memory comprising: a reference pattern input device for receiving and transmitting an electrical reference pattern in the form of an n×n matrix; a correlation matrix operation device for converting an electrical reference pattern in the form of an n×n matrix fro

An opto-electrical hybrid associative memory comprising: a reference pattern input device for receiving and transmitting an electrical reference pattern in the form of an n×n matrix; a correlation matrix operation device for converting an electrical reference pattern in the form of an n×n matrix from said reference pattern input device into an electrical correlation matrix pattern in the form of an n2×n2 matrix; a correlation matrix display device for converting said electrical correlation matrix pattern into an optical correlation matrix pattern in the form of an n2×n2 matrix; a correlation matrix storage device for storing said optical correlation matrix pattern displayed by said correlation matrix display device; a reference pattern conversion device for converting said electrical reference pattern in the form of an n×n matrix from said reference pattern input device into an electrical reference pattern in the form of an n2×n2 matrix; a reference pattern display device for converting said electrical reference pattern in the form of an n2×n2 matrix from said reference pattern conversion device into an optical reference pattern in the form of an n2×n2 matrix; a pattern operation device for producing an optical recall pattern in the form of an n2×n2 matrix by optically multiplying said optical correlation matrix pattern from said correlation matrix storage device and said optical reference pattern output from said reference pattern display device; a light receiving matrix for converting said optical recall pattern from said pattern operation device into an electrical recall pattern in the form of an n2×n2 matrix; and a recall pattern conversion device for converting said electrical recall pattern in the form of an n2×n2 matrix from said light receiving matrix into an electrical recall pattern in the form of an n×n matrix and for transmitting the last said electrical recall pattern in the form of an n×n matrix to said correlation matrix operation device, whereby said electrical recall pattern in the form of an n×n matrix is obtained from said electrical reference pattern after learning with a plurality of reference patterns through repeated optical processing.