Browse Prior Art Database

Three Dimensional Magnetic Memories

IP.com Disclosure Number: IPCOM000094513D
Original Publication Date: 1965-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Chang, D: AUTHOR

Abstract

In this core and driver array there are many cores but the number of cores for each driver is limited to a suitable maximum n. The cores are represented as arranged in a cube having n cores on an edge and a total of n/3/ cores. A particular core can be defined by X, Y and Z coordinates.

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Three Dimensional Magnetic Memories

In this core and driver array there are many cores but the number of cores for each driver is limited to a suitable maximum n. The cores are represented as arranged in a cube having n cores on an edge and a total of n/3/ cores. A particular core can be defined by X, Y and Z coordinates.

Each driver, illustrated as a core, is connected to apply a half-select current to n cores aligned in one direction of the cube. There is an XZ set of drivers controlled by X inputs and Z inputs and a similar YZ set of drivers. Thus, a particular X input defines a plane of cores as lines Xj Z1 and Xj Zk illustrate. Similarly, lines Yj Z1 and Yj Zk illustrate a plane of cores defined by a single input Yjt. At the intersection of two X and Y defined planes there are n cores each defined by a particular Z input to both the XZ and YZ sets of drivers.

The circuit can be repeated so that corresponding cores in each array form a word.

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