FR2999315B1 - DEVICE FOR MANAGING ACCESS TO A SEQUENTIAL ACCESS MEMORY MEMORY - Google Patents

DEVICE FOR MANAGING ACCESS TO A SEQUENTIAL ACCESS MEMORY MEMORY Download PDF

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Publication number
FR2999315B1
FR2999315B1 FR1261941A FR1261941A FR2999315B1 FR 2999315 B1 FR2999315 B1 FR 2999315B1 FR 1261941 A FR1261941 A FR 1261941A FR 1261941 A FR1261941 A FR 1261941A FR 2999315 B1 FR2999315 B1 FR 2999315B1
Authority
FR
France
Prior art keywords
access
peripheral
mass memory
memory
managing
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.)
Active
Application number
FR1261941A
Other languages
French (fr)
Other versions
FR2999315A1 (en
Inventor
Sonia Schindler
Tanguy Leminor
Patrick Valette
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.)
Safran Electronics and Defense SAS
Original Assignee
Safran Electronics and Defense SAS
Sagem Defense Securite SA
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 Safran Electronics and Defense SAS, Sagem Defense Securite SA filed Critical Safran Electronics and Defense SAS
Priority to FR1261941A priority Critical patent/FR2999315B1/en
Publication of FR2999315A1 publication Critical patent/FR2999315A1/en
Application granted granted Critical
Publication of FR2999315B1 publication Critical patent/FR2999315B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0673—Single storage device
    • G06F3/0674—Disk device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/061—Improving I/O performance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
    • G06F3/0656—Data buffering arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
    • G06F3/0659—Command handling arrangements, e.g. command buffers, queues, command scheduling
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

L'invention concerne un dispositif de gestion de l'accès à une mémoire de masse à accès séquentiel par au moins un premier périphérique et un second périphérique, lesdits premier et second périphériques étant adaptés pour accéder à un emplacement de la mémoire de masse, le dispositif comprenant : une unité de sauvegarde adaptée pour sauvegarder, pour chacun des premier et second périphériques un emplacement accédé par le périphérique ; une unité de pointage de l'accès à la mémoire de masse adaptée pour, à chaque accès par un périphérique à la mémoire de masse, sauvegarder l'emplacement accédé ; une unité de gestion de l'accès à la mémoire de masse adaptée pour que, lorsque le premier périphérique accède et que le second périphérique émet une requête d'accès à ladite mémoire de masse : copier le contenu de l'unité de pointage de l'accès à la mémoire de masse dans l'unité de sauvegarde correspondant au premier périphérique ; puis copier le contenu de l'unité de sauvegarde correspondant au second périphérique dans l'unité de pointage de l'accès à la mémoire de masse.The invention relates to a device for managing access to a mass memory with sequential access by at least a first peripheral and a second peripheral, said first and second peripherals being adapted to access a location of the mass memory, the device comprising: a backup unit adapted to back up, for each of the first and second peripherals, a location accessed by the peripheral; a mass memory access pointing unit suitable for, on each access by a peripheral to the mass memory, saving the accessed location; a mass memory access management unit adapted so that, when the first peripheral accesses and the second peripheral issues a request for access to said mass memory: copy the content of the pointing unit from the access to the mass memory in the backup unit corresponding to the first peripheral; then copy the contents of the backup unit corresponding to the second peripheral in the pointing unit of the access to the mass memory.

FR1261941A 2012-12-12 2012-12-12 DEVICE FOR MANAGING ACCESS TO A SEQUENTIAL ACCESS MEMORY MEMORY Active FR2999315B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1261941A FR2999315B1 (en) 2012-12-12 2012-12-12 DEVICE FOR MANAGING ACCESS TO A SEQUENTIAL ACCESS MEMORY MEMORY

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1261941A FR2999315B1 (en) 2012-12-12 2012-12-12 DEVICE FOR MANAGING ACCESS TO A SEQUENTIAL ACCESS MEMORY MEMORY
FR1261941 2012-12-12

Publications (2)

Publication Number Publication Date
FR2999315A1 FR2999315A1 (en) 2014-06-13
FR2999315B1 true FR2999315B1 (en) 2018-03-16

Family

ID=47741136

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1261941A Active FR2999315B1 (en) 2012-12-12 2012-12-12 DEVICE FOR MANAGING ACCESS TO A SEQUENTIAL ACCESS MEMORY MEMORY

Country Status (1)

Country Link
FR (1) FR2999315B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6678749B2 (en) * 2001-06-28 2004-01-13 Sony Corporation System and method for efficiently performing data transfer operations
US7103456B2 (en) * 2004-04-12 2006-09-05 Sagem Avionics, Inc. PCMCIA card for remotely communicating and interfacing with aircraft condition monitoring systems

Also Published As

Publication number Publication date
FR2999315A1 (en) 2014-06-13

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