GB1456774A - Magnetic memories - Google Patents

Magnetic memories

Info

Publication number
GB1456774A
GB1456774A GB4716374A GB4716374A GB1456774A GB 1456774 A GB1456774 A GB 1456774A GB 4716374 A GB4716374 A GB 4716374A GB 4716374 A GB4716374 A GB 4716374A GB 1456774 A GB1456774 A GB 1456774A
Authority
GB
United Kingdom
Prior art keywords
bubbles
conductor
bars
transferred
current pulse
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
GB4716374A
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.)
Sperry Corp
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1456774A publication Critical patent/GB1456774A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11C19/0875—Organisation of a plurality of magnetic shift registers
    • G11C19/0883—Means for switching magnetic domains from one path into another path, i.e. transfer switches, swap gates or decoders

Landscapes

  • Thin Magnetic Films (AREA)
  • Hall/Mr Elements (AREA)

Abstract

1456774 Magnetic bubble switching SPERRY RAND CORP 31 Oct 1974 [9 Nov 1973] 47163/74 Heading H3B In a magnetic memory bubbles are transferred between a major and plural minor loops by two magnetically soft linking elements D, E and a serpentine transfer conductor B which contacts once each soft magnetic element that it crosses. The bubbles are propagated by an in-plane rotating field H R which normally drives bubbles leftwards across T and I bars A-G forming part of the major loop but may be transferred to minor loops formed by H and I bars such as H-J by the application of a current pulse to the conductor when the field H R is between compass positions 3 and 4 to switch the bubbles to element D. Similarly, bubbles are switched back to the major loop by element E when a current pulse is applied at the time H R is between positions 1 and 2. The conductor is of gold electrodeposited directly over the elements.
GB4716374A 1973-11-09 1974-10-31 Magnetic memories Expired GB1456774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US407675A US3896421A (en) 1973-11-09 1973-11-09 Bi-directional magnetic domain transfer circuit

Publications (1)

Publication Number Publication Date
GB1456774A true GB1456774A (en) 1976-11-24

Family

ID=23613058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4716374A Expired GB1456774A (en) 1973-11-09 1974-10-31 Magnetic memories

Country Status (6)

Country Link
US (1) US3896421A (en)
JP (1) JPS5821357B2 (en)
DE (1) DE2451535C3 (en)
FR (1) FR2251073B1 (en)
GB (1) GB1456774A (en)
IT (1) IT1022661B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096582A (en) * 1974-05-30 1978-06-20 Monsanto Company Field-accessed magnetic bubble mutually exclusive circuits with common elements
JPS52142934A (en) * 1976-05-21 1977-11-29 Rockwell International Corp Small exchange switch
US4094005A (en) * 1976-05-21 1978-06-06 Rockwell International Corporation Magnetic bubble data transfer switch
US4225941A (en) * 1978-10-30 1980-09-30 Trw Inc. Controller for bubble memories
US4238377A (en) * 1979-06-04 1980-12-09 Chevron Research Company Polymerizable premix composition for preparation of polyurethane surfaces

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697963A (en) * 1971-03-29 1972-10-10 Bell Telephone Labor Inc Single wall domain memory organization
US3713116A (en) * 1971-11-09 1973-01-23 Bell Telephone Labor Inc Single-wall domain arrangement
BE792287A (en) * 1971-12-06 1973-03-30 Western Electric Co MAGNETIC MEMORY DEVICE

Also Published As

Publication number Publication date
DE2451535C3 (en) 1981-04-16
JPS50114135A (en) 1975-09-06
FR2251073B1 (en) 1981-06-12
US3896421A (en) 1975-07-22
JPS5821357B2 (en) 1983-04-28
FR2251073A1 (en) 1975-06-06
IT1022661B (en) 1978-04-20
DE2451535B2 (en) 1980-07-10
DE2451535A1 (en) 1975-08-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee