Binary phase only filter associative memory

Details Binary phase only filter associative memory Binary phase only filter associative memory

1992-06-30

1994-11-01

Nguyen, Viet Q.

Static information storage and retrieval

Associative memories

Ferroelectric cell

365120, 365127, 359 4, 359 22, 359 29, G06K 976, G11C 1304

Patent

active

053612221

ABSTRACT:
An associative memory apparatus having a 2f Fourier transform optical correlation configuration wherein the correlation spots produced in the correlation plane are projected back by a mirror through the inverse Fourier transform lens and a phase correction reference image filter to produce the output image representing the best match between the input image and the associative memory reference images. A 4f Fourier transform embodiment projects the correlation spots forward through a second filter and transform means and the output image can be fed back to the input image display SLM to enhance the output image.

REFERENCES:
patent: 4636027 (1987-01-01), Dube
patent: 4837843 (1989-06-01), Owechko
patent: 4860253 (1989-08-01), Owechko et al.
Brown et al, "Computer-generated Binary Holograms", IBM J. Reasearch Development, Aug. 1, 1968, pp. 160-168.

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