Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 1 of 61
`Case 5:18—cv-03463-BLF Document 28-4 Filed 10/04/18 Page 1 of 61
`
`EXHIBIT 4
`
`

`

`Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 2 of 61
`Case 5:18-c—v-“03463 BLF Document 28-4 Filed 10/04/18 Page 2 of 61
`|||||||||||||||||||||||||l||||lll||||||||||||||l||g|||l|l||||||||ll||l||l|||
`
`US007945544B2
`
`(12) Umted States Patent
`(10) Patent No.:
`US 7,945,544 B2
`
`Farber et a].
`(45) Date of Patent:
`May 17, 2011
`
`(54) SIMILARITY-BASED ACCESS CONTROL OF
`DATA IN A DATA PROCESSING SYSTEM
`
`(75)
`
`Inventors: D’Wid A- Farber, Ojai, CA (US);
`Ronald D. Lachman, Nonhbrook, 1L
`(US)
`
`(73) Assignees: Kinetech, Inc., Studio City, CA (US);
`Level 3 Communications, LLC,
`Broomfie1d: CO (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) Appl. No.: 11/980,688
`
`(22)
`
`Filed:
`
`Oct. 31, 2007
`
`(51)
`
`Int. Cl.
`(2006.01)
`G06F 17/00
`(52) US. Cl.
`......................... 707/698; 707/821; 707/822
`(58) Field of Classification Search .................. 707/609,
`707/821—828, 697~698
`See application file for complete search history.
`
`(56)
`
`References Cited
`
`US. PA’l‘EN't' DOCUMENTS
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`EP
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`
`(“mm“)
`
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`
`Prior Publication Data
`US 2008/0065635 A1
`Mar 13 2008
`'
`’
`
`Related US. Application Data
`(60) Continuation of application No. 11/724,232, filed on
`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
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`division of application No. 08/960,079, filed on Oct.
`24, 1997, now Pat. No. 5,978,791, which is
`a
`continuation of application No. 08/425,160, filed on
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`
`(”HER PUBLICMIONS
`Fowler, et al. “A User-Level Replicated File System," AT&T Bell
`Laboratories Technical Memorandum 0112670-930414-05, Apr.
`
`1993, and USlelX 1993 Summer Conference Proceedings, Cincin-
`nati, OH, Jun 1993.
`
`(Continued)
`
`Primary Examiner — Khanh B Pham
`(74) AI/orney, Agent, or Firm W Davidson Berquist Jackson
`& Gowdey, LLP; Brian Siritzky
`
`(57)
`
`ABSTRACT
`
`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 of that 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
`
`.II'
`
`DI“
`mtnrru‘m1
`
`PAW DITA ITS.INTO
`mum
`
`
`
`I
`
`
`
`
`
`
`mutt: mutt. a: nrrl a! mu
`munmu I new! um: :I m- m n
`
`“I”+1
`
`EXHIBIT 4 - 1
`
`

`

`Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 3 of 61
`Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 3 of 61
`
`US 7,945,544 B2
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`EXHIBIT 4 - 2
`
`

`

`Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 4 of 61
`Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 4 of 61
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`EXHIBIT 4 - 3
`
`

`

`Case 5:18-cv-03463-BLF Document 28-4 Filed 10/04/18 Page 5 of 61
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