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Magnetic Shifting Device

IP.com Disclosure Number: IPCOM000098072D
Original Publication Date: 1961-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Ghisler, W: AUTHOR [+2]

Abstract

The magnetic shifting device operates on the basis of wall motion. The transfer of independent binary information via a coplanar crossing is achieved without any mutually disturbing influence.

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Magnetic Shifting Device

The magnetic shifting device operates on the basis of wall motion. The transfer of independent binary information via a coplanar crossing is achieved without any mutually disturbing influence.

The device is a coplanar thin magnetic film arrangement with two crossing thin magnetic film strips. The thin magnetic film cells A, B, C, D exhibit a linear uniaxial anisotropy. The strip comprising the cells 11... 19 forms a first shift register. The strip comprising the cells 20...29 forms a second shift register. The center element 15 is part of both shift registers. The A and C cells are associated with the drive conductor I, the B and D cells with the drive conductor
II. There is a reset conductor R cooperating with the A cells 14, 15 and 16. The amplitude of the driving pulses is such that the generated magnetic field in the region of a thin magnetic film cell is smaller than the nucleation field strength and larger than the critical field strength for wall motion.

It is assumed that, before applying the first drive pulse to the driving conductor I at clock time t(1), the shaded cells contain a ""1 , while the non- shaded cells contain a ""0 . Thus, domain walls are present between shaded and non-shaded cells.

The sequential action during a period of an information transfer is as follows: Switch-over into Reset into

At clock time ""1 position of cells ""0 position of cells t(1) 14, 15, 16, 17, 23, 28 12, 19, 21, 26.

t(2) - 14 15,16.

t(3) 18,...