Abstract:
The field access mode of operating a single-wall domain mass memory is adapted for the reordering of stored information depending on the recency of use of the information. The memory is organized in the familiar major-minor loop arrangement where information is transferred from minor loops to the major loop for write and read operations. Reordering is permitted by a modification of the elements which define the major loop.
Abstract:
A passive bubble replicator is achieved by adding to a stage of a multistage, fine-grained, field-access bubble propagate circuit, magnetic elements of a geometry to provide laterally spaced localized attracting poles and a repelling intermediate pole in the propagation path. Normal operation of the finegrained propagate circuit provides poles which first expand a bubble laterally and thereafter cooperate with the intermediate pole to cut the expanded bubble.
Abstract:
A fast transfer circuit for single wall domains is described. The circuit comprises a succession of recirculating positions defined by magnetically soft overlays. It all the recirculating positions are occupied by domains, any subsequent information introduced to the beginning of the sequence appears at the end of the sequence more quickly than a domain otherwise moves in a normal propagation mode employing overlays. Movement of domains is in response to a rotating in-plane field which changes the positions of domain-attracting poles in the overlay.