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`Case 5:18-cv-03459-BLF Document 28-4 Filed 10/04/18 Page 1 of 61
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`EXH|B|T4
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`Case 5:18-cv-03459-BLF Document 28-4 Filed 10/04/18 Page 2 of 61
`Case 5:18-cv-03459-BLF Document 28-4 Filed 10/04/18 Page 2 of 61
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`USOO7945544B2
`
`(12)
`
`United States Patent
`US 7,945,544 32
`(10) Patent No.:
`
` Farber et a1. (45) Date of Patent: May 17, 2011
`
`
`(54)
`
`(75)
`
`(73)
`
`SIMILARITY—BASED ACCESS CONTROL OF
`DATA IN A DATA PROCESSING SYSTEM
`
`Inventors David A- Farber. Ojai. CA (US):
`Ronald D. Lachman. Northbrook. IL
`(US)
`
`Assignees: Kinetech, Inc., Studio City. CA (US);
`Level 3 Communications, LLC.
`Brownfield. (:0 (US)
`
`(*)
`
`Notice:
`
`Subject to any disclaimer, the term ofthis
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 624 days.
`
`(21)
`
`App1.No.: 11/980,688
`
`(22)
`
`Filed:
`
`Oct. 31, 2007
`Prior Publication Data
`
`(51)
`
`Int. (1].
`(2006.01)
`G06F 17/00
`707/698: 707/821; 707/822
`(52) US. (II.
`..
`(58) Field of Classification Search .................. 707/609.
`707/821 828. 697 698
`See application file for complete search history.
`
`(56)
`
`References Cited
`‘
`.
`.
`.
`‘
`.
`‘
`US. PAl EN] DOCUMHN l S
`3.668.647 A
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`US 2008/0065635 Al
`
`Mar. 13. 2008
`
`Related U.S. Application Data
`
`l l/724,232. filed on
`Continuation of application No.
`Mar. 15. 2007. which is a continuation of application
`No. 11/017,650. filed on Dec. 22. 2004, which is a
`continuation of application No. 09/987.723. filed on
`Nov. 15. 2001. now Pat. No. 6.928.442, which is a
`continuation of application No. 09/283,160. filed on
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`a
`continuation of application No. 08/425.160. filed on
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`11. 1995, now abandoned. application No.
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`
`Fowler. ct al. “A User-Level Replicatcd File System." AT&T Bell
`Laboratories Technical Memorandum 0112670-930414-05. Apr.
`1993. and USENIX 1993 Summer Conference Proceedings. Cincin-
`nati. OH, Jun. 1993.
`
`(Continued)
`
`Primary Examiner 7 Khanh B P118111
`(74) Anon/av. Agent, or Firm 7 Davidson Berquist Jackson
`& Gowdey, LLP: Brian Siritzlql
`
`ABSTRACT
`(57)
`Similarity of data items is determined by analyzing corre-
`sponding segments of the data items. A function is applied to
`each segment of a data item and the output ofthat function is
`compared to the output of the same function applied to a
`corresponding segment of another data item. A function may
`be applied to the output of the functions. The functions may
`be hash or message digest functions.
`
`56 Claims, 31 Drawing Sheets
`
`EXHIBIT 4 - 1
`
` PAR 11IO" DATA m IN'I'D
`GEM
`
`
`
`
`Manure new aeolian
`(oi/minute mTRUENAME)
`
`
`
`
`
`
`
`
` CREATEIWETBLMOF
`MMMWENAMEE
`
`
`
`
`mm“ INDMEOTBLOCK
`
`[BONNIE ITE'IRUENAMEI
`
`
`m PHIL I: in" 0' m
`mumW one u or an:
`
`m
`
`(65)
`
`(60)
`
`

`

`Case 5:18-cv-03459-BLF Document 28-4 Filed 10/04/18 Page 3 of 61
`Case 5: 18-CV-03459-BLF
`Document 28-4 Filed 10/04/18 Page 3 of 61
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`EXHIBIT 4 - 2
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`

`

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