DK2013974T3 - Datakomprimerings- og datalagringsteknik - Google Patents

Datakomprimerings- og datalagringsteknik Download PDF

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Publication number
DK2013974T3
DK2013974T3 DK07760346.2T DK07760346T DK2013974T3 DK 2013974 T3 DK2013974 T3 DK 2013974T3 DK 07760346 T DK07760346 T DK 07760346T DK 2013974 T3 DK2013974 T3 DK 2013974T3
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Denmark
Prior art keywords
data
file
data set
hash
content
Prior art date
Application number
DK07760346.2T
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English (en)
Inventor
Michael Moore
Brian Dodd
Original Assignee
Data Storage Group 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
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Publication of DK2013974T3 publication Critical patent/DK2013974T3/da

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Document Processing Apparatus (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Claims (3)

1. Fremgangsmåde til lagring af data, hvilken fremgangsmåde omfatter: modtagelse af en fil, hashing (3) af et første sæt af metadataf ilegenskaber ved filen for at generere en identifikationshash og forsøg på at få identifikationshashen til at matche lagrede identifikationshashes fra tidligere lagrede filer, ved mislykket matchning (6) af identifikationshashen, hashing af et andet sæt af metadataf ilegenskaber ved filen for at generere (10) en sekundær hash og forsøg på at få den sekundære hash til at matche (13) lagrede sekundære hashes fra tidligere lagrede filer, hvorved det andet sæt af metadatafilegenskaber er et undersæt af det første sæt af metadatafilegenskaber, ved bestemmelse af, at den sekundære hash matcher en sekundær hash fra en tidligere lagret fil, opnåelse af indhold (15) af den tidligere lagrede fil, præ-indlæsning af en ordbogsbaseret komprimeringsmotor med én eller flere dataportioner af den tidligere lagrede fil, hvorved én af de ene eller flere dataportioner af den tidligere lagrede fil som indlæst i den ordbogsbaserede komprimeringsmotor er ukomprimeret og definerer en individuel ordbogsblok, komprimering (17) af en tilsvarende lige stor dataportion af filen ved hjælp af den ordbogsbaserede komprimeringsmotor som indlæst med dataportionen af den tidligere lagrede fil som den individuelle ordbogsblok, hvorved en komprimeret dataportion genereres, og hvorved de komprimerede dataportioner henviser til den individuelle ordbogsblok, der anvendes til at generere den komprimerede dataportion, og lagring (18) af den komprimerede dataportion, hvorved det andet sæt metadatafilegenskaber omfatter et opbevaringssted for en tidligere lagret fil.
2. Fremgangsmåde ifølge krav 1, hvorved indholdet af den tidligere lagrede fil komprimeres eller dekomprimeres.
3. Arkiveringsapparat til udførelse af en fremgangsmåde ifølge et hvilket som helst af kravene 1-2.
DK07760346.2T 2006-04-07 2007-04-09 Datakomprimerings- og datalagringsteknik DK2013974T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74447706P 2006-04-07 2006-04-07
PCT/US2007/066263 WO2007118243A2 (en) 2006-04-07 2007-04-09 Data compression and storage techniques

Publications (1)

Publication Number Publication Date
DK2013974T3 true DK2013974T3 (da) 2018-10-29

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DK07760346.2T DK2013974T3 (da) 2006-04-07 2007-04-09 Datakomprimerings- og datalagringsteknik

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US (2) US7860843B2 (da)
EP (1) EP2013974B1 (da)
JP (1) JP5309015B2 (da)
AU (1) AU2007234696B2 (da)
CA (1) CA2648428C (da)
DK (1) DK2013974T3 (da)
WO (1) WO2007118243A2 (da)

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Publication number Publication date
EP2013974B1 (en) 2018-07-11
EP2013974A2 (en) 2009-01-14
WO2007118243A3 (en) 2008-12-24
EP2013974A4 (en) 2009-08-05
WO2007118243A2 (en) 2007-10-18
US20080034268A1 (en) 2008-02-07
US7860843B2 (en) 2010-12-28
CA2648428C (en) 2017-11-21
JP2009533731A (ja) 2009-09-17
JP5309015B2 (ja) 2013-10-09
AU2007234696A1 (en) 2007-10-18
AU2007234696B2 (en) 2011-08-18
CA2648428A1 (en) 2007-10-18
US20110087640A1 (en) 2011-04-14

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