Communications: electrical – Digital comparator systems
Patent
1975-04-11
1976-11-09
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
340173AM, 340173LM, 350DIG1, G11C 1500
Patent
active
039914011
ABSTRACT:
The invention provides a method for simultaneously identifying the location of all those words which, in a page store, are identical to a key word. The words of a page exhibiting at least the same 1 value as the keyboard are classified in a first set, and those exhibiting at least the same 0 value, in a second set, the identified words being those belonging to both sets. The invention also describes two embodiments of an optical device for implementing the method in an associative optical store; in both embodiments, two identical images of the page store are respectively projected onto two detection planes constituted by detection rows, through two modulation plane constituted by modulating columns.
REFERENCES:
patent: 3614191 (1971-10-01), Sakaguchi et al.
patent: 3720453 (1973-03-01), Lee et al.
patent: 3781830 (1973-12-01), Vilkomerson
patent: 3887906 (1975-06-01), Minnaja
Sakaguchi et al., "A New Associative Memory System Utilizing Holography," IEEE Transactions On Computers, vol. C-19, No. 12, 12/70, pp. 1174-1181.
Gabor, "Associative Holographic Memories," IBM J. Res. Develop., Mar. 1969, pp. 156-159.
Cobb et al., "Associatively Addressed Holographic Storage," IBM Tech. Disclosure Bulletin, vol. 13, No. 5, 10/70, pp. 1070-1071.
"Thomson-CSF"
Boudreau Leo H.
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