Browse Prior Art Database

Film Storage Device

IP.com Disclosure Number: IPCOM000094086D
Original Publication Date: 1966-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Halvarson, EH: AUTHOR

Abstract

This two-dimensional magnetic storage device is of the type having a closed flux path. The device combines some of the features of the flat and cylindrical film storage media.

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Film Storage Device

This two-dimensional magnetic storage device is of the type having a closed flux path. The device combines some of the features of the flat and cylindrical film storage media.

The elemental component 10 of the device, shown in A, is mounted on drive lines 14. Component 10 includes a film of magnetic material deposited on an essentially toroid-like substrate. Anisotropy is introduced into component 10 to provide a closed flux path around aperture 12. Thus the magnetization assumes the direction of arrow 16.

In operation as shown in B, the device includes conductor 18 that passes through aperture 12. Passage of current through conductor 18 orients the magnetic dipoles circumferentially tending to align them about arrow 16. Now, while the current is still being transmitted along conductor 18, the magnetic dipoles are then rotated to a direction 20 perpendicular to the length dimension by passing current through conductors 14. The latter are adjacent and parallel to the length dimension of the device. Thus, properly phased electrical pulses are required on both sets of conductors 14 and 18 to store information. A single pulse on conductors 14 alone is sufficient to develop a signal on conductor 18 for the reading of information from the device.

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