Associative memories using magnetic bubbles

Details Associative memories using magnetic bubbles Associative memories using magnetic bubbles

1977-04-11

1979-04-10

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Generators

365 15, 365 41, G11C 1908

Patent

active

041492676

ABSTRACT:
An associative magnetic domain memory comprising; a predetermined number of storage loops having a predetermined number of magnetic elements on which domains circulate, said domains or absence of said domains on said magnetic elements in said storage loops representing bits of binary information; write-in section and read-out means disposed relative to said storage loops; said write-in section including, generator for generating bits and propagating said bits to positions adjacent said storage loops as a set of bits with a subset of said bits representing address bits and the rest of said set being data bits, and a gate for transferring said set of bits into said storage loops for storage therein; said read-out section including a replicator for forming replicas of sets of bits in said storage loops, a gate for transferring said replica sets one at a time, a sensor for receiving and sensing said transferred replica sets if one of said address bits does not match the desired address criteria.
A plurality of similar memories are arranged in parallel with the replica address bits of each subset from each memory sensed as a row and an association performed on a plurality of address bit criteria. As before, the associative process will continue until there is a complete match of all the replica address bits with all the address criteria at which time the replica data associated with each of the replica address bits is read out.

REFERENCES:
patent: 3760390 (1973-09-01), Murakami
patent: 4070659 (1978-01-01), Bullock

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