Browse Prior Art Database

Improved Memory Device Configuration

IP.com Disclosure Number: IPCOM000093792D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Leilich, HO: AUTHOR [+2]

Abstract

Wedge-shaped magnetic material of high electrical resistivity is selectively positioned in the yoke region of a metallic toroidal or elliptically shaped storage element. Such material minimizes field disturbance and provides better control over current flow through the device.

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Improved Memory Device Configuration

Wedge-shaped magnetic material of high electrical resistivity is selectively positioned in the yoke region of a metallic toroidal or elliptically shaped storage element. Such material minimizes field disturbance and provides better control over current flow through the device.

In drawing A a storage element consists of an electrically conductive substrate, in the shape of a toroid or an ellipse 10, on the surface of which is superimposed a film of magnetic metal. The storage directions of the magnetization are parallel to the body of the toroid either clockwise or counterclockwise that is along legs 2.

The leg portions are positioned between yokes 4 which in turn are coupled to neck leads 6. Interposed between legs 2 is electrical conductor 8.

Writing is achieved by the coincidence of electrical pulses transmitted through the body in time coincidence with a second series of pulses transmitted along conductor 8. That current transmitted through the body ideally divides equally between the two legs 2 positioned between yokes 4. Where a yoke 4 is not well-defined disturb fields are experienced within the yoke region which affect the current flow through legs 2.

This is overcome with the positioning of wedge sections 12 in the yoke region as shown in B. Wedge sections 12 are magnetic deposits of high electrical resistivity. Thus, when current is transmitted through the body current flow is confined to the perimeter depicted by arr...