ES487298A1 - Dispositivo de prueba de un caracter testigo inscrito en unamemoria - Google Patents

Dispositivo de prueba de un caracter testigo inscrito en unamemoria

Info

Publication number
ES487298A1
ES487298A1 ES487298A ES487298A ES487298A1 ES 487298 A1 ES487298 A1 ES 487298A1 ES 487298 A ES487298 A ES 487298A ES 487298 A ES487298 A ES 487298A ES 487298 A1 ES487298 A1 ES 487298A1
Authority
ES
Spain
Prior art keywords
memory
pilot
checking
pilot character
character written
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.)
Expired
Application number
ES487298A
Other languages
English (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.)
INTERNATIONALE POUR L'INFORMATIQUE CII - Cie
Original Assignee
INTERNATIONALE POUR L'INFORMATIQUE CII - Cie
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 INTERNATIONALE POUR L'INFORMATIQUE CII - Cie filed Critical INTERNATIONALE POUR L'INFORMATIQUE CII - Cie
Publication of ES487298A1 publication Critical patent/ES487298A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/22—Safety or protection circuits preventing unauthorised or accidental access to memory cells
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0763—Error or fault detection not based on redundancy by bit configuration check, e.g. of formats or tags
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
    • G11C11/406—Management or control of the refreshing or charge-regeneration cycles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
    • G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
    • G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
    • G11C11/4078—Safety or protection circuits, e.g. for preventing inadvertent or unauthorised reading or writing; Status cells; Test cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Read Only Memory (AREA)
  • Storage Device Security (AREA)

Abstract

Dispositivo de prueba de un carácter testigo inscrito en una memoria, el cual posee un código binario previamente definido , y previamente registrado en una zona de memoria borrable de almacenamiento de cargas eléctricas, para garantizar la integridad de las informaciones contenidas en una memoria, estando tal memoria asociada a medios de maniobra que permiten la lectura del carácter testigo en la zona que le está reservada e impidiendo la escritura de información en dicha zona, caracterizado porque comprende un medio de comparación del carácter testigo leído a partir de los medios de maniobra, con el código binario previamente definido al efectuarse el registro del carácter testigo en el interior de dicha zona de memoria.
ES487298A 1978-12-27 1979-12-27 Dispositivo de prueba de un caracter testigo inscrito en unamemoria Expired ES487298A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7836545A FR2445587A1 (fr) 1978-12-27 1978-12-27 Dispositif de test d'un caractere temoin inscrit dans une memoire

Publications (1)

Publication Number Publication Date
ES487298A1 true ES487298A1 (es) 1980-09-16

Family

ID=9216599

Family Applications (1)

Application Number Title Priority Date Filing Date
ES487298A Expired ES487298A1 (es) 1978-12-27 1979-12-27 Dispositivo de prueba de un caracter testigo inscrito en unamemoria

Country Status (5)

Country Link
EP (1) EP0016295A1 (es)
JP (1) JPS5595154A (es)
BR (1) BR7908579A (es)
ES (1) ES487298A1 (es)
FR (1) FR2445587A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455320B1 (fr) * 1979-04-25 1986-01-24 Cii Honeywell Bull Dispositif de recyclage de supports d'enregistrement identifiables a l'aide de donnees d'identification et composes de memoires monolithiques non volatiles effacables
JPS5764397A (en) * 1980-10-03 1982-04-19 Olympus Optical Co Ltd Memory device
US4438512A (en) * 1981-09-08 1984-03-20 International Business Machines Corporation Method and apparatus for verifying storage apparatus addressing
DE3133304A1 (de) * 1981-08-22 1983-03-03 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur erhoehung der zuverlaessigkeit von halbleiterspeichern in kraftfahrzeugen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5277993A (en) * 1975-12-24 1977-06-30 Toshiba Corp Numeric controller
JPS52112243A (en) * 1976-03-17 1977-09-20 Nippon Signal Co Ltd:The Error detection system for exclusive reading memory
JPS5346235A (en) * 1976-10-08 1978-04-25 Hitachi Ltd Memory check system

Also Published As

Publication number Publication date
FR2445587A1 (fr) 1980-07-25
JPS6258021B2 (es) 1987-12-03
EP0016295A1 (fr) 1980-10-01
FR2445587B1 (es) 1982-09-17
BR7908579A (pt) 1980-07-08
JPS5595154A (en) 1980-07-19

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