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Enhancing Operating Margins of Bubble Domain Memories

IP.com Disclosure Number: IPCOM000078209D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Almasi, GS: AUTHOR [+2]

Abstract

The operating margins of some isolated bubble domain devices, such as annihilators, are often not compatible with the margins of other components in the memory. It is proposed to resolve this problem by localized heating of the annihilators.

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Enhancing Operating Margins of Bubble Domain Memories

The operating margins of some isolated bubble domain devices, such as annihilators, are often not compatible with the margins of other components in the memory. It is proposed to resolve this problem by localized heating of the annihilators.

Pperating margins of all bubble domain devices in a memory are temperature-sensitive, to the extent that the bubble domain diameter and 4 Pi M of the bubble domain material are temperature-sensitive. This dependence is significant in some bubble domain materials. This effect can be used to enhance the operating margins of a particular set of devices, such as generators, splitters or busters, whose operating margins may not adequately overlap with the operating margins of other components in a memory system.

The local area of the memory used for generation, splitting or busting has its temperature increased through the use of input beam energy, or by resistive heating through the use of a strip line localized in the area where the critical function is achieved.

The busting function can also be accomplished simply by leading the bubble domains into a local hot spot, where they cannot exist.

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