JPS57123584A - Magnetic bubble memory element - Google Patents

Magnetic bubble memory element

Info

Publication number
JPS57123584A
JPS57123584A JP796181A JP796181A JPS57123584A JP S57123584 A JPS57123584 A JP S57123584A JP 796181 A JP796181 A JP 796181A JP 796181 A JP796181 A JP 796181A JP S57123584 A JPS57123584 A JP S57123584A
Authority
JP
Japan
Prior art keywords
loop
marker
information
bit
magnetic bubble
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
JP796181A
Other languages
Japanese (ja)
Inventor
Koji Oba
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 JP796181A priority Critical patent/JPS57123584A/en
Publication of JPS57123584A publication Critical patent/JPS57123584A/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
    • G11C19/0875—Organisation of a plurality of magnetic shift registers

Abstract

PURPOSE:To speed initialization access to a magnetic bubble by specifying one minor loop as a marker loop and by providing a replicate transfer out gate which corresponds to said loop. CONSTITUTION:A specific minor loop 1c is set as a marker loop and information 1 is written to only the marker bit 1c1 of the loop lc. This information is read by a characteristic replicate transfer out gate 10 arranged closely to a detector 3 to perform n-bit transfer, so that the marker bit 1c1 is detected by the detector 3. For this purpose, when defective information is written in a page address leading the bit 1c1 by (n) bits, defective loop information is read out shortly after marker detection to speed initial access to a magnetic bubble without requiring complex constitution.
JP796181A 1981-01-23 1981-01-23 Magnetic bubble memory element Pending JPS57123584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP796181A JPS57123584A (en) 1981-01-23 1981-01-23 Magnetic bubble memory element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP796181A JPS57123584A (en) 1981-01-23 1981-01-23 Magnetic bubble memory element

Publications (1)

Publication Number Publication Date
JPS57123584A true JPS57123584A (en) 1982-08-02

Family

ID=11680071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP796181A Pending JPS57123584A (en) 1981-01-23 1981-01-23 Magnetic bubble memory element

Country Status (1)

Country Link
JP (1) JPS57123584A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422555B1 (en) * 2001-03-06 2002-07-23 Hewlett-Packard Company Sheet material registration apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422555B1 (en) * 2001-03-06 2002-07-23 Hewlett-Packard Company Sheet material registration apparatus and method

Similar Documents

Publication Publication Date Title
JPS56140452A (en) Memory protection system
JPS5680872A (en) Buffer memory control system
JPS57123584A (en) Magnetic bubble memory element
JPS55162138A (en) Logging system
JPS5211829A (en) Memory control unit
JPS5744294A (en) Alternating memory control system
JPS55163697A (en) Memory device
JPS57103547A (en) Bit word access circuit
JPS5590000A (en) Error detection system for memory
JPS55122216A (en) Magnetic card read/write control unit
JPS5350813A (en) Information memory device
JPS5424612A (en) Error detecting system of data memory device
JPS55117785A (en) Magnetic bubble memory element
JPS5748149A (en) Memory device
JPS57195374A (en) Sequential access storage device
JPS56152065A (en) Microcomputer device
JPS5712498A (en) Integrated circuit device for memory
JPS5563420A (en) Detector for data train
JPS5720851A (en) Data processor
JPS57193847A (en) Memory bank dividing circuit
JPS563486A (en) Magnetic bubble memory control system
JPS554757A (en) Error control system of memory unit
JPS5481036A (en) Magnetic bubble memory unit
DE58909627D1 (en) Arrangement for transmitting data words divided into several parts
JPS5589978A (en) Search method for defective loop of bubble memory chip