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Thin Magnetic Film Store

IP.com Disclosure Number: IPCOM000093517D
Original Publication Date: 1967-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Paton, A: AUTHOR

Abstract

A portion of a magnetic thin film store, made by integrated circuit techniques, is shown. It consists of a continuous sheet of thin-film magnetic material 1 having an easy direction of magnetization represented by the double-headed arrow 2. A number of elongated apertures 3 regularly spaced in rows and columns define storage locations in the thin-film material. Strip line bit conductors 4 alternatively thread up and down through apertures 3 perpendicular to the easy direction 2. Strip line word conductors 5 overlie the apertures insulated from the bit conductors 4 and parallel to the easy direction 2. Data is represented by the direction of the resultant magnetization around an aperture, that is, clockwise or anticlockwise.

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Thin Magnetic Film Store

A portion of a magnetic thin film store, made by integrated circuit techniques, is shown. It consists of a continuous sheet of thin-film magnetic material 1 having an easy direction of magnetization represented by the double-headed arrow 2. A number of elongated apertures 3 regularly spaced in rows and columns define storage locations in the thin-film material. Strip line bit conductors 4 alternatively thread up and down through apertures 3 perpendicular to the easy direction 2. Strip line word conductors 5 overlie the apertures insulated from the bit conductors 4 and parallel to the easy direction 2. Data is represented by the direction of the resultant magnetization around an aperture, that is, clockwise or anticlockwise.

The data stored in a word is read by energizing the associated word conductor 5 to rotate the associated magnetic vectors to the hard direction. This gives rise to signals representing the stored data in parallel on bit conductors 4 which serve also as sense conductors for the store.

Data is written in a word by coincidently energizing the associated word conductor 5 with all bit conductors 4. The polarity of the signals applied to the bit conductors determines the ultimate direction of magnetization of vectors around the apertures and hence the data stored.

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