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Laminated Multi Apertured Ferrite Storage Device

IP.com Disclosure Number: IPCOM000093965D
Original Publication Date: 1966-Apr-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 72K

Publishing Venue

IBM

Related People

Agajanian, AH: AUTHOR [+2]

Abstract

This nondestructive readout storage device is of the type having two apertures at right angles per storage cell. The device is also of the type using flux interference rather than flux steering, as is common with most multi-aperture devices. It is formed from laminated ferrite films, with magnetically isolated bit cells.

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Laminated Multi Apertured Ferrite Storage Device

This nondestructive readout storage device is of the type having two apertures at right angles per storage cell. The device is also of the type using flux interference rather than flux steering, as is common with most multi-aperture devices. It is formed from laminated ferrite films, with magnetically isolated bit cells.

As shown in drawing A, magnetic ferrites 2 are placed above and below a sheet of nonmagnetic ferrite 4 to form laminate 6. The latter is then cut into a series of slabs 8 as in drawing B. Slabs 8 are separated and nonmagnetic ferrites 10 are interposed between every two slabs 8 such as depicted in C. The laminate of C is then cut once again into slabs. The direction of cutting in this instance is transverse to that of the previous cut, specifically along lines ab, cd, and ef. Further, nonmagnetic material 12 is then interposed between every two slabs, from C, to form a laminate such as depicted in D. A plurality of orthogonal apertures 16 and 18 is then provided in each bit cell 14 by drilling or the like. The resultant bit cells 14 are magnetically isolated, one from the other, in this fashion.

Rather than drill apertures 16 and 18 in each bit cell 14, polymeric material is selectively positioned, during fabrication, in the laminate and apertures provided by vaporizing the selectively placed polymeric threads. The device is then completed with the positioning of drive lines 20 and 22 in the apertu...