JPS5755584A - Device repipheral circuit of magnetic bubble memory device - Google Patents

Device repipheral circuit of magnetic bubble memory device

Info

Publication number
JPS5755584A
JPS5755584A JP12933780A JP12933780A JPS5755584A JP S5755584 A JPS5755584 A JP S5755584A JP 12933780 A JP12933780 A JP 12933780A JP 12933780 A JP12933780 A JP 12933780A JP S5755584 A JPS5755584 A JP S5755584A
Authority
JP
Japan
Prior art keywords
bubble memory
current
power source
circuit
memory pattern
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
JP12933780A
Other languages
Japanese (ja)
Inventor
Tadaaki Eto
Shinsaku Chiba
Ryuji Yano
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 JP12933780A priority Critical patent/JPS5755584A/en
Publication of JPS5755584A publication Critical patent/JPS5755584A/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
    • G11C19/0866—Detecting magnetic domains

Abstract

PURPOSE:To protect a bubble memory pattern, by inhibit the supply of the power source voltage to a pulse current circuit that applies the pulse current to a bubble memory pattern when a power source +5V is turned off after detecting the on/off state of the power source. CONSTITUTION:When a +5V power source 8 is turnd off, transistors 6a, 7a of +5V detecting circuits 6 and 7 are turned off respectively. Then the transistors 9 is switched from on to off and transistor 10 is switched vice versa, respectively. Thus the current flowed from a power source 1 for current driver is cut off by the transistor 9 although a drive transistor 5 conducts with input of the input voltage Vin, and accordingly the current is not supplied to a pulse current circuit 4 that applies the pulse current to a bubble memory pattern. Furthermore the current staying at the circuit 4 is earthed via the transistor 10. As a result, only the pulse current that has a controlled pulse duration is applied to the bubble memory pattern to protect the bubble memory pattern from the blow of pattern etc.
JP12933780A 1980-09-19 1980-09-19 Device repipheral circuit of magnetic bubble memory device Pending JPS5755584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12933780A JPS5755584A (en) 1980-09-19 1980-09-19 Device repipheral circuit of magnetic bubble memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12933780A JPS5755584A (en) 1980-09-19 1980-09-19 Device repipheral circuit of magnetic bubble memory device

Publications (1)

Publication Number Publication Date
JPS5755584A true JPS5755584A (en) 1982-04-02

Family

ID=15007106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12933780A Pending JPS5755584A (en) 1980-09-19 1980-09-19 Device repipheral circuit of magnetic bubble memory device

Country Status (1)

Country Link
JP (1) JPS5755584A (en)

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