FR2391531A1 - MEMORY WITH MAGNETIC AREAS THAT TOLERATE FAULTS - Google Patents

MEMORY WITH MAGNETIC AREAS THAT TOLERATE FAULTS

Info

Publication number
FR2391531A1
FR2391531A1 FR7814410A FR7814410A FR2391531A1 FR 2391531 A1 FR2391531 A1 FR 2391531A1 FR 7814410 A FR7814410 A FR 7814410A FR 7814410 A FR7814410 A FR 7814410A FR 2391531 A1 FR2391531 A1 FR 2391531A1
Authority
FR
France
Prior art keywords
memory
magnetic areas
loops
tolerate faults
loop
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.)
Granted
Application number
FR7814410A
Other languages
French (fr)
Other versions
FR2391531B1 (en
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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
Priority claimed from US05/796,934 external-priority patent/US4458334A/en
Priority claimed from US05/804,979 external-priority patent/US4090251A/en
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of FR2391531A1 publication Critical patent/FR2391531A1/en
Application granted granted Critical
Publication of FR2391531B1 publication Critical patent/FR2391531B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/86—Masking faults in memories by using spares or by reconfiguring in serial access memories, e.g. shift registers, CCDs, bubble memories
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/003—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation in serial memories

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

L'invention concerne une mémoire à domaines magnétiques tolérant les défauts. Elle comporte une pellicule magnétique avec une boucle majeure, des boucles mmeures et des portes de transfert Trois positions identiques de chaque boucle sont utilisées pour mémoriser des informations redondantes indiquant les numéros des boucles qui sont défectueuses et ne doivent pas être utilisées. Application au domaine des calculateurs numériques.A fault tolerant magnetic domain memory is disclosed. It has a magnetic film with a major loop, memory loops and transfer gates. Three identical positions of each loop are used to store redundant information indicating the numbers of the loops which are faulty and should not be used. Application to the field of digital computers.

FR7814410A 1977-05-16 1978-05-16 MEMORY WITH MAGNETIC AREAS THAT TOLERATE FAULTS Granted FR2391531A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/796,934 US4458334A (en) 1977-05-16 1977-05-16 Redundancy map storage for bubble memories
US05/804,979 US4090251A (en) 1977-06-09 1977-06-09 Bubble memory redundancy storage

Publications (2)

Publication Number Publication Date
FR2391531A1 true FR2391531A1 (en) 1978-12-15
FR2391531B1 FR2391531B1 (en) 1983-03-04

Family

ID=27121801

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814410A Granted FR2391531A1 (en) 1977-05-16 1978-05-16 MEMORY WITH MAGNETIC AREAS THAT TOLERATE FAULTS

Country Status (8)

Country Link
JP (1) JPS5466729A (en)
AU (1) AU3610878A (en)
BR (1) BR7803086A (en)
DE (1) DE2821228C2 (en)
FR (1) FR2391531A1 (en)
GB (1) GB1596990A (en)
IT (1) IT1156748B (en)
NL (1) NL7805283A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307332A1 (en) * 1975-04-07 1976-11-05 Sperry Rand Corp PROCESS FOR STORING INFORMATION IN A MEMORY INCLUDING AT LEAST ONE DEFECTIVE STORAGE ZONE AND DEVICE FOR EXECUTION OF THIS PROCESS

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5427693B2 (en) * 1971-10-30 1979-09-11
US3792450A (en) * 1972-05-08 1974-02-12 Singer Co System for overcoming faults in magnetic anisotropic material
US3909810A (en) * 1974-02-25 1975-09-30 Texas Instruments Inc Bubble memory minor loop redundancy scheme
JPS5816264B2 (en) * 1974-12-09 1983-03-30 株式会社日立製作所 Jiki Bubble Memory Souch
JPS51118341A (en) * 1975-04-11 1976-10-18 Hitachi Ltd Shift register type memory
US4070651A (en) * 1975-07-10 1978-01-24 Texas Instruments Incorporated Magnetic domain minor loop redundancy system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307332A1 (en) * 1975-04-07 1976-11-05 Sperry Rand Corp PROCESS FOR STORING INFORMATION IN A MEMORY INCLUDING AT LEAST ONE DEFECTIVE STORAGE ZONE AND DEVICE FOR EXECUTION OF THIS PROCESS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Also Published As

Publication number Publication date
IT1156748B (en) 1987-02-04
DE2821228C2 (en) 1981-10-08
DE2821228A1 (en) 1978-11-23
GB1596990A (en) 1981-09-03
NL7805283A (en) 1978-11-20
FR2391531B1 (en) 1983-03-04
JPS5466729A (en) 1979-05-29
AU3610878A (en) 1979-11-22
BR7803086A (en) 1979-03-20
IT7849402A0 (en) 1978-05-16

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Legal Events

Date Code Title Description
ST Notification of lapse