JPS5644183A - Magnetic bubble output control system - Google Patents

Magnetic bubble output control system

Info

Publication number
JPS5644183A
JPS5644183A JP12015679A JP12015679A JPS5644183A JP S5644183 A JPS5644183 A JP S5644183A JP 12015679 A JP12015679 A JP 12015679A JP 12015679 A JP12015679 A JP 12015679A JP S5644183 A JPS5644183 A JP S5644183A
Authority
JP
Japan
Prior art keywords
bubble output
minor loop
read
magnetic bubble
defective
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
JP12015679A
Other languages
Japanese (ja)
Inventor
Noboru Suemori
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 JP12015679A priority Critical patent/JPS5644183A/en
Publication of JPS5644183A publication Critical patent/JPS5644183A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to read a bubble output even if it fluctuates due to an external factor, by re-setting a bias current value and the threshold level of a read amplifier after changing a defective minor loop over to a stand-by minor loop.
CONSTITUTION: Minor loop group 10 stored in fixed information for compensating the factors of output fluctuations is stored with the fixed information. For example, minor loops at addresses (k) and (l) in minor loop group 20 are defective and the 1st and 2nd loops in stand-by minor loop group 30 are used as substitutes for the defective loops. To compensate a magnetic bubble output, magnetic bubble output "1" is equivalently increased, when the fixed information is read out and bubble output "1" is read as "0", by re-setting the bias current value, the threshold level of the read amplifier, etc. Thus, fluctuations due to external factors are compensated.
COPYRIGHT: (C)1981,JPO&Japio
JP12015679A 1979-09-20 1979-09-20 Magnetic bubble output control system Pending JPS5644183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12015679A JPS5644183A (en) 1979-09-20 1979-09-20 Magnetic bubble output control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12015679A JPS5644183A (en) 1979-09-20 1979-09-20 Magnetic bubble output control system

Publications (1)

Publication Number Publication Date
JPS5644183A true JPS5644183A (en) 1981-04-23

Family

ID=14779332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12015679A Pending JPS5644183A (en) 1979-09-20 1979-09-20 Magnetic bubble output control system

Country Status (1)

Country Link
JP (1) JPS5644183A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958682A (en) * 1982-09-28 1984-04-04 Fujitsu Ltd Magnetic bubble memory device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958682A (en) * 1982-09-28 1984-04-04 Fujitsu Ltd Magnetic bubble memory device

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