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Sensing a Superconductive Memory

IP.com Disclosure Number: IPCOM000096644D
Original Publication Date: 1963-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Kwei, TC: AUTHOR

Abstract

Segments of superconductive memories can have individual sense windings and sense transformers associated with each winding. Sense signal delay can be minimized as the path to be travelled by the signal is minimized.

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Sensing a Superconductive Memory

Segments of superconductive memories can have individual sense windings and sense transformers associated with each winding. Sense signal delay can be minimized as the path to be travelled by the signal is minimized.

A superconductive memory, shown schematically, frequently has an information storage plane 10 and a ground plane 20 insulated from plane 10. Discrete memory locations of the plane 10 are traversed by sense conductors 31, 32, 33, 34. These conductors pass over holes 35, 36, 37, 38 in plane 20 to ground potential, forming individual sense transformer primaries.

A single sense transformer secondary is formed on the opposite surface of the assembly by conductor 40 which passes over holes 55, 56, 57, 58 in conductive plane 50 and is axially aligned with holes 35, 36, 37, 38. The secondaries are, therefore, series wound with each other and impedance 59. The information representing state of a discrete memory location within a segment is sensed by the associated conductor 31, 32, 33, 34 passing through the location.

As the number of storage locations for a superconductive memory increases, the segments to be sensed may also be increased and sense signal delay maintained at a minimum.

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