CA2137683A1 - Data Writing to Non-Volatile Memory - Google Patents

Data Writing to Non-Volatile Memory

Info

Publication number
CA2137683A1
CA2137683A1 CA2137683A CA2137683A CA2137683A1 CA 2137683 A1 CA2137683 A1 CA 2137683A1 CA 2137683 A CA2137683 A CA 2137683A CA 2137683 A CA2137683 A CA 2137683A CA 2137683 A1 CA2137683 A1 CA 2137683A1
Authority
CA
Canada
Prior art keywords
card
volatile memory
data writing
eeprom
recovery
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
CA2137683A
Other languages
French (fr)
Other versions
CA2137683C (en
Inventor
David B. Everett
Keith Michael Jackson
Ian Miller
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.)
Mondex International Ltd
Original Assignee
David B. Everett
Keith Michael Jackson
Ian Miller
Jonhig Limited
Mondex International Limited
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 David B. Everett, Keith Michael Jackson, Ian Miller, Jonhig Limited, Mondex International Limited filed Critical David B. Everett
Publication of CA2137683A1 publication Critical patent/CA2137683A1/en
Application granted granted Critical
Publication of CA2137683C publication Critical patent/CA2137683C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1008—Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
    • G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
    • 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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1441—Resetting or repowering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/76—Architectures of general purpose stored program computers
    • G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
    • G06F15/7807—System on chip, i.e. computer system on a single chip; System in package, i.e. computer system on one or more chips in a single package
    • G06F15/7821—Tightly coupled to memory, e.g. computational memory, smart memory, processor in memory
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/341—Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0806—Details of the card
    • G07F7/0813—Specific details related to card security
    • G07F7/082—Features insuring the integrity of the data on or in the card
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0866—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by active credit-cards adapted therefor
    • 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
    • G11C16/10—Programming or data input circuits
    • G11C16/102—External programming circuits, e.g. EPROM programmers; In-circuit programming or reprogramming; EPROM emulators
    • 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
    • G11C16/10—Programming or data input circuits
    • G11C16/102—External programming circuits, e.g. EPROM programmers; In-circuit programming or reprogramming; EPROM emulators
    • G11C16/105—Circuits or methods for updating contents of nonvolatile memory, especially with 'security' features to ensure reliable replacement, i.e. preventing that old data is lost before new data is reliably written

Abstract

A method of writing data to non-volatile memory such as electrically erasable programmable read only memory (EEPROM) in a smart card provides a write status region of EEPROM which is examined on each reset of the card. If the preceding write operation was unsuccessful, perhaps because of deliberate manipulation of the card, a recovery procedure is implemented. If recovery is successful the card application can be run. Otherwise the card is unusable.
CA002137683A 1993-04-13 1994-04-13 Data writing to non-volatile memory Expired - Fee Related CA2137683C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939307623A GB9307623D0 (en) 1993-04-13 1993-04-13 Data writing to eeprom
GB9307623.0 1993-04-13

Publications (2)

Publication Number Publication Date
CA2137683A1 true CA2137683A1 (en) 1994-10-27
CA2137683C CA2137683C (en) 1999-02-23

Family

ID=10733749

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002137683A Expired - Fee Related CA2137683C (en) 1993-04-13 1994-04-13 Data writing to non-volatile memory

Country Status (17)

Country Link
US (1) US5715431A (en)
EP (1) EP0645046B1 (en)
JP (1) JP3918195B2 (en)
KR (1) KR100343377B1 (en)
CN (1) CN1049516C (en)
AT (1) ATE219857T1 (en)
AU (1) AU676731B2 (en)
BR (1) BR9404989A (en)
CA (1) CA2137683C (en)
CR (1) CR5712A (en)
DE (1) DE69430859D1 (en)
GB (1) GB9307623D0 (en)
MD (1) MD960344A (en)
PL (1) PL173398B1 (en)
RU (1) RU2146399C1 (en)
WO (1) WO1994024673A1 (en)
ZA (1) ZA942553B (en)

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Also Published As

Publication number Publication date
DE69430859D1 (en) 2002-08-01
BR9404989A (en) 1999-06-15
EP0645046A1 (en) 1995-03-29
PL306763A1 (en) 1995-04-18
ATE219857T1 (en) 2002-07-15
EP0645046B1 (en) 2002-06-26
CN1049516C (en) 2000-02-16
MD960344A (en) 1997-06-30
PL173398B1 (en) 1998-02-27
KR100343377B1 (en) 2002-12-18
CR5712A (en) 1998-08-31
JPH07508120A (en) 1995-09-07
CA2137683C (en) 1999-02-23
CN1110488A (en) 1995-10-18
AU6507794A (en) 1994-11-08
WO1994024673A1 (en) 1994-10-27
KR950702061A (en) 1995-05-17
GB9307623D0 (en) 1993-06-02
JP3918195B2 (en) 2007-05-23
RU2146399C1 (en) 2000-03-10
US5715431A (en) 1998-02-03
AU676731B2 (en) 1997-03-20
ZA942553B (en) 1995-06-05

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