Optical operation apparatus for finding an inner product of vect

Details Optical operation apparatus for finding an inner product of vect Optical operation apparatus for finding an inner product of vect

1995-08-16

1997-06-17

Henry, Jon W.

Optical: systems and elements

Optical computing without diffraction

395 25, G06E 300, G06G 716

Patent

active

056402619

ABSTRACT:
In an optical operation apparatus for carrying out an operation for finding an inner product of a first vector and a second vector by utilizing light, an optical vector encoding system forms an encoded distribution, which is based on all of elements of the first and second vectors, in which the intensities have been encoded in accordance with the values of the elements of the first vector, and in which the centers of gravity of local intensities have been position encoded in accordance with the values of the elements of the second vector. A product sum decoding system extracts a value of an inner product of the first vector and the second vector in accordance with the encoded distribution having been formed by the optical vector encoding system, and feeds out the information representing the inner product value.

REFERENCES:
patent: 5113485 (1992-05-01), Horan et al.
Japanese Journal of Applied Physics, vol. 29, No. 7, Jul. 1990, Tokyo JP, pp. 11325-11327.
Zhang et al., "Optoelectronic Implementation of Bipolar Analog Neural Network Using Shadow Casting" IEEE Photonics Technology Letters, vol. 6, No. 4, Apr. 1994 New York US, pp. 552-554.
Turner et al., "CMOS Photodetectors for Correlation Peak Location" Applied Optics, vol. 24, No. 10, May 15, 1985, New York US, pp. 1469-1475.
"Optical Implementation of the Hopfield Model" by Nabil H. Farhat, Demetri Psaltis, Aluizio Prata and Eung Paek, Applied Optics/vol. 24, No. 10/ pp. 1469-1475/ May 15, 1985.

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