GB997492A - Data transfer apparatus - Google Patents

Data transfer apparatus

Info

Publication number
GB997492A
GB997492A GB4000762A GB4000762A GB997492A GB 997492 A GB997492 A GB 997492A GB 4000762 A GB4000762 A GB 4000762A GB 4000762 A GB4000762 A GB 4000762A GB 997492 A GB997492 A GB 997492A
Authority
GB
United Kingdom
Prior art keywords
stripline
elements
films
film
thin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4000762A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB997492A publication Critical patent/GB997492A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
    • G11C19/0825—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation using a variable perpendicular magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/085—Generating magnetic fields therefor, e.g. uniform magnetic field for magnetic domain stabilisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/0858—Generating, replicating or annihilating magnetic domains (also comprising different types of magnetic domains, e.g. "Hard Bubbles")
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
    • H03K17/84—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices the devices being thin-film devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Magnetic Heads (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Hall/Mr Elements (AREA)

Abstract

997,492. Circuits employing thin magnetic films. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 23, 1962 No. 40007/62. Heading H3B. Two thin magnetic films 1 and 2, Figs. 1 and 2, coupled together by a stripline 3 have the coupling between the film 1 and film 2 higher than the coupling between film 2 and film 1. The directional dependence of the coupling is shown to be due to the rectangular shape and different orientations of the films 1 and 2 and to their different permeabilities. The distance between the two conductors of the stripline 3 is made proportional to the width of the stripline 3 in order to keep the characteristic impedance of the stripline independent of position. In the shift register shown in Fig. 6 the controlling element is formed by two thin films 14 and 15 whereas the element controlled by these films is formed by thin films 16, 17 connected in parallel with respect to stripline 10. For the purpose of transferring information to the next stage these films 16 and 17 are connected in series with respect to stripline 10<SP>1</SP>. In the shift register of Fig. 14 the rectangular thin films 51-55 are arranged with their easy axis of magnetization at a small angle e to the axis of a stripline 45 carrying a rectangular pulse current i. Stripline 60 carries a constant bias current i 2 so that the effect of currents i 1 and i 2 together is to produce magnetic fields alternately tending to switch the A elements 51, 53, 55 and the B elements 52 and 54 from the easy direction to a hard direction. As an A element is switching to the hard direction the B elements are returning to the easy direction so that the pulses induced in the striplines 61-65 and having a polarity indicative of the data stored in the A elements influence the choice of the easy direction by the B elements. Because of the directional dependence of the couplings the B elements always respond to the information stored in the A element to their left. During the next half cycle information is transferred from the B elements to the A elements to their right. The shift register may be formed by producing a thin copper layer 50 on a glass substrate the other components being mounted thereon with silicon oxide insulating layers between. The copper layer 50 may form the return conductor for the strip lines.
GB4000762A 1961-10-27 1962-10-23 Data transfer apparatus Expired GB997492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1243761A CH397766A (en) 1961-10-27 1961-10-27 Signal transmission arrangement

Publications (1)

Publication Number Publication Date
GB997492A true GB997492A (en) 1965-07-07

Family

ID=4383017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4000762A Expired GB997492A (en) 1961-10-27 1962-10-23 Data transfer apparatus

Country Status (7)

Country Link
BE (1) BE624011A (en)
CH (1) CH397766A (en)
DE (1) DE1266811B (en)
ES (1) ES281877A1 (en)
GB (1) GB997492A (en)
NL (1) NL284739A (en)
SE (1) SE310706B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL233342A (en) * 1957-11-18

Also Published As

Publication number Publication date
SE310706B (en) 1969-05-12
DE1266811B (en) 1968-04-25
ES281877A1 (en) 1963-04-16
CH397766A (en) 1965-08-31
NL284739A (en)
BE624011A (en)

Similar Documents

Publication Publication Date Title
GB1162107A (en) A Magnetoresistive Head
US2774890A (en) Nonreciprocal transmitting devices
GB1364348A (en) Magneto-resistive devices
GB986518A (en) Planar-hall device
IE36253L (en) Magnetic device
GB999312A (en) Magnetic device
US3366939A (en) Device having changeable resistance and internal inductance
US3113297A (en) Binary information transfer device
GB1279718A (en) A binary coded magnetic information store
GB997492A (en) Data transfer apparatus
GB975575A (en) A device for the transfer of information between magnetic film elements
US3037199A (en) Thin film switching circuit
US2719964A (en) Magnetic surface writing circuit utilizing magnetic cores
GB871829A (en) Magnetic device for computing or control systems
US3172089A (en) Thin film magnetic device
US3736419A (en) Magnetoresistive sensing of bubble domains with noise suppression
GB819134A (en) Improvements in or relating to electro-magnetic devices
GB986555A (en) Electrical devices including magneto resistive elements
GB1109006A (en) Improvements in magnetic memories
GB1521734A (en) Magnetic memory systems
US3699551A (en) Domain propagation arrangement
GB986157A (en) Superconductive in-line gating devices and circuits
KR920001129B1 (en) Magnetic resistance effect magnetic head
US3413485A (en) Regulable reactors and gate circuits using them
US3343144A (en) Low power thin magnetic film