FR2391531A1 - MEMORY WITH MAGNETIC AREAS THAT TOLERATE FAULTS - Google Patents
MEMORY WITH MAGNETIC AREAS THAT TOLERATE FAULTSInfo
- 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
Links
- 230000005381 magnetic domain Effects 0.000 abstract 1
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.
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)
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)
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 |
-
1977
- 1977-12-30 GB GB54316/77A patent/GB1596990A/en not_active Expired
-
1978
- 1978-01-24 JP JP664678A patent/JPS5466729A/en active Pending
- 1978-05-15 AU AU36108/78A patent/AU3610878A/en active Pending
- 1978-05-16 IT IT49402/78A patent/IT1156748B/en active
- 1978-05-16 FR FR7814410A patent/FR2391531A1/en active Granted
- 1978-05-16 BR BR7803086A patent/BR7803086A/en unknown
- 1978-05-16 NL NL7805283A patent/NL7805283A/en not_active Application Discontinuation
- 1978-05-16 DE DE2821228A patent/DE2821228C2/en not_active Expired
Patent Citations (1)
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)
Title |
---|
EXBK/76 * |
Also Published As
Publication number | Publication date |
---|---|
AU3610878A (en) | 1979-11-22 |
IT1156748B (en) | 1987-02-04 |
IT7849402A0 (en) | 1978-05-16 |
GB1596990A (en) | 1981-09-03 |
FR2391531B1 (en) | 1983-03-04 |
JPS5466729A (en) | 1979-05-29 |
DE2821228A1 (en) | 1978-11-23 |
BR7803086A (en) | 1979-03-20 |
NL7805283A (en) | 1978-11-20 |
DE2821228C2 (en) | 1981-10-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |