Soft write apparatus and method for nondestructive readout core

Details Soft write apparatus and method for nondestructive readout core Soft write apparatus and method for nondestructive readout core

1986-04-28

1989-02-14

Moffitt, James W.

Static information storage and retrieval

Systems using particular element

Two magnetic cells per bit

365133, G11C 1106

Patent

active

048051462

ABSTRACT:
The sense voltages of an NDRO core memory including two cores per memory bit are increased by using a "soft write" technique wherein one of the two ferrite cores of each memory bit is written into by a smaller write current than the other. This results in a steeper slope toward the knee of the lower part of the hysteresis characteristic of the first core. The steeper slope results in a larger induced voltage for the first core. This increases the difference between the induced voltages of the two cores, thereby increasing the sense voltage to be detected by the sense circuitry.

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patent: 3493944 (1970-02-01), Kolk, Jr.
1960 International Solid-State Circuits Conference Digest of Technical Papers; Feb. 11, 1960, pp. 58-59; 365-131.

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