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Bubble Domain Crossover Circuit

IP.com Disclosure Number: IPCOM000082569D
Original Publication Date: 1974-Dec-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Lin, YS: AUTHOR [+3]

Abstract

This crossover circuit allows bubble domain data streams to intersect one another synchronously, without destructive interference at the intersection of the data streams. Significant space savings are achieved.

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Bubble Domain Crossover Circuit

This crossover circuit allows bubble domain data streams to intersect one another synchronously, without destructive interference at the intersection of the data streams. Significant space savings are achieved.

In the figure, bubble domains enter the crossover along channels A and B. These channels are comprised of disk-shaped elements on both sides of the bubble domain material, to define an overlay and an underlay. These disc elements can be comprised of permalloy, for instance. At the intersection of channels A and B, the permalloy disks are elongated to permit bubble domain crossover without destructive interference. Thus, the bubble domains along each of the channels continue to move in the direction of their respective channels, as the propagation field H reorients in the plane of the magnetic medium.

As shown, bubble domains traveling along channel A will pass through the crossover in accordance with the pole patterns defined on the elongated underlay disk shown in a dashed line, while bubble domains traveling along channel B will follow pole patterns determined by the elongated overlay disk shown in a solid line.

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