JPS5758282A - Magnetic bubble memory device - Google Patents

Magnetic bubble memory device

Info

Publication number
JPS5758282A
JPS5758282A JP13168480A JP13168480A JPS5758282A JP S5758282 A JPS5758282 A JP S5758282A JP 13168480 A JP13168480 A JP 13168480A JP 13168480 A JP13168480 A JP 13168480A JP S5758282 A JPS5758282 A JP S5758282A
Authority
JP
Japan
Prior art keywords
time
magnetic field
magnetic bubble
revolving
magnetic
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.)
Pending
Application number
JP13168480A
Other languages
Japanese (ja)
Inventor
Minoru Hiroshima
Masahiro Yanai
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13168480A priority Critical patent/JPS5758282A/en
Publication of JPS5758282A publication Critical patent/JPS5758282A/en
Pending 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
    • G11C19/085—Generating magnetic fields therefor, e.g. uniform magnetic field for magnetic domain stabilisation

Abstract

PURPOSE:To prevent an occurrence of erroneous operation of a quasi defective loop when starting or stopping the operation by setting the start-stop direction of the revolving magnetic field to the direction which is at right angles to the transfer direction of a magnetic bubble of a minor loop. CONSTITUTION:The start-stop direction of a revolving magnetic field is set (direction of +x) which is right angles to the transfer direcion (direction of y and p) of magnetic bubbles of minor loops. At a time t1 which is just before the revolving magnetic field is stopped, the magnetic bubble is at the location B. Namely, because of a defect (d) (quasi defect) of the minor loop, the magnetic bubble stops on patterns 10 and 11. When the revolving magnetic field is turned off at a time t2, the magnetic bubble stops at B1 or B2. When the revolving magnetic field is again turned on at a time t4, the magnetic bubble becomes the same condition as at the time t1 and is at the location B, and is transferred normally. In this way, occurrence of erroneous operations of quasi defective loops at the time of starting and stopping operations are prevented.
JP13168480A 1980-09-24 1980-09-24 Magnetic bubble memory device Pending JPS5758282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13168480A JPS5758282A (en) 1980-09-24 1980-09-24 Magnetic bubble memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13168480A JPS5758282A (en) 1980-09-24 1980-09-24 Magnetic bubble memory device

Publications (1)

Publication Number Publication Date
JPS5758282A true JPS5758282A (en) 1982-04-07

Family

ID=15063798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13168480A Pending JPS5758282A (en) 1980-09-24 1980-09-24 Magnetic bubble memory device

Country Status (1)

Country Link
JP (1) JPS5758282A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53121430A (en) * 1977-03-31 1978-10-23 Fujitsu Ltd Magnetic bubble unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53121430A (en) * 1977-03-31 1978-10-23 Fujitsu Ltd Magnetic bubble unit

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