SE7906523L - BUBBLE MEMORY - Google Patents

BUBBLE MEMORY

Info

Publication number
SE7906523L
SE7906523L SE7906523A SE7906523A SE7906523L SE 7906523 L SE7906523 L SE 7906523L SE 7906523 A SE7906523 A SE 7906523A SE 7906523 A SE7906523 A SE 7906523A SE 7906523 L SE7906523 L SE 7906523L
Authority
SE
Sweden
Prior art keywords
bubbles
sites
film
aperture
bubble
Prior art date
Application number
SE7906523A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE417027B (en
Inventor
A H Bobeck
Original Assignee
Western Electric Co
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
Priority claimed from US05/857,925 external-priority patent/US4143420A/en
Priority claimed from US05/857,921 external-priority patent/US4143419A/en
Priority claimed from US05/857,920 external-priority patent/US4142249A/en
Priority claimed from US05/857,919 external-priority patent/US4142247A/en
Application filed by Western Electric Co filed Critical Western Electric Co
Publication of SE7906523L publication Critical patent/SE7906523L/en
Publication of SE417027B publication Critical patent/SE417027B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
    • 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
    • G11C19/0841—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 electric current
    • 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
    • G11C19/0866—Detecting magnetic domains

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thin Magnetic Films (AREA)
  • Hall/Mr Elements (AREA)

Abstract

A conductor-access magnetic bubble memory, which alleviates using a plurality of conductors that requires intricate patterns of conductors which are generally difficult to make in small dimensions necessary to achieve fast operating devices, comprises an electrically-conductive film (12) provided with a pattern of sequences of apertures (14) therethrough. Each aperture defines, in an adjoining layer (11) of a bubble propagating material, a preferred site for a bubble during intervals when current is caused to flow through the film. Rest positions, such as ion implanted regions (15) within the adjoining layer, or permalloy elements (123) associated with each aperture, define other preferred sites for bubbles offset from the aperture defined sites, whereby, upon termination of the current flow through the film, the bubbles automatically (without the use of external drive means) advance to the offset sites, thus ensuring movement of the bubbles in prescribed directions.
SE7906523A 1977-12-06 1979-08-01 bubble memory SE417027B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US05/857,925 US4143420A (en) 1977-12-06 1977-12-06 Conductor-access, magnetic bubble memory
US05/857,921 US4143419A (en) 1977-12-06 1977-12-06 Magnetic bubble memory with single level electrically-conducting, drive arrangement
US05/857,920 US4142249A (en) 1977-12-06 1977-12-06 Conductor-access, magnetic bubble memory
US05/857,919 US4142247A (en) 1977-12-06 1977-12-06 Conductor-driven magnetic bubble memory with an expander-detector arrangement

Publications (2)

Publication Number Publication Date
SE7906523L true SE7906523L (en) 1979-08-01
SE417027B SE417027B (en) 1981-02-16

Family

ID=27505927

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7906523A SE417027B (en) 1977-12-06 1979-08-01 bubble memory

Country Status (12)

Country Link
EP (1) EP0007305A1 (en)
CA (1) CA1118097A (en)
DD (1) DD139906A5 (en)
DE (1) DE2857245C1 (en)
ES (1) ES475592A1 (en)
FR (1) FR2467464B1 (en)
GB (1) GB2044027B (en)
IE (1) IE47757B1 (en)
IT (1) IT1101299B (en)
SE (1) SE417027B (en)
WO (1) WO1979000360A1 (en)
YU (1) YU282978A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480982B1 (en) * 1980-04-18 1986-01-10 Commissariat Energie Atomique MAGNETIC BUBBLE MEMORY
FR2480983A1 (en) * 1980-04-18 1981-10-23 Commissariat Energie Atomique MEMORY WITH MAGNETIC BUBBLES

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967002A (en) * 1974-12-31 1976-06-29 International Business Machines Corporation Method for making high density magnetic bubble domain system
US3996573A (en) * 1975-04-21 1976-12-07 Texas Instruments Incorporated Bubble propagation circuits and formation thereof
US4067002A (en) * 1975-12-31 1978-01-03 International Business Machines Corporation Field access of bubble domain lattice

Also Published As

Publication number Publication date
FR2467464B1 (en) 1988-10-07
IT1101299B (en) 1985-09-28
GB2044027B (en) 1982-06-03
EP0007305A1 (en) 1980-01-23
DD139906A5 (en) 1980-01-23
DE2857245C1 (en) 1982-09-02
CA1118097A (en) 1982-02-09
IT7830555A0 (en) 1978-12-05
YU282978A (en) 1982-06-30
SE417027B (en) 1981-02-16
ES475592A1 (en) 1979-05-01
GB2044027A (en) 1980-10-08
WO1979000360A1 (en) 1979-06-28
IE782407L (en) 1979-06-06
FR2467464A1 (en) 1981-04-17
IE47757B1 (en) 1984-06-13

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