WO2008154307A3 - Memory device with circuitry for improving accuracy of a time estimate and method for use therewith - Google Patents

Memory device with circuitry for improving accuracy of a time estimate and method for use therewith Download PDF

Info

Publication number
WO2008154307A3
WO2008154307A3 PCT/US2008/065965 US2008065965W WO2008154307A3 WO 2008154307 A3 WO2008154307 A3 WO 2008154307A3 US 2008065965 W US2008065965 W US 2008065965W WO 2008154307 A3 WO2008154307 A3 WO 2008154307A3
Authority
WO
WIPO (PCT)
Prior art keywords
time
memory device
circuitry
time estimate
use therewith
Prior art date
Application number
PCT/US2008/065965
Other languages
French (fr)
Other versions
WO2008154307A2 (en
Inventor
Michael Holtzman
Rotem Sela
Ron Barzilai
Fabrice E Jogand-Coulomb
Original Assignee
Sandisk Corp
Michael Holtzman
Rotem Sela
Ron Barzilai
Fabrice E Jogand-Coulomb
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
Priority claimed from US11/811,284 external-priority patent/US8688924B2/en
Priority claimed from US11/811,347 external-priority patent/US20080304364A1/en
Application filed by Sandisk Corp, Michael Holtzman, Rotem Sela, Ron Barzilai, Fabrice E Jogand-Coulomb filed Critical Sandisk Corp
Priority to EP08756738A priority Critical patent/EP2153299A2/en
Priority to CN2008800193473A priority patent/CN101720455B/en
Priority to JP2010511333A priority patent/JP5180292B2/en
Publication of WO2008154307A2 publication Critical patent/WO2008154307A2/en
Publication of WO2008154307A3 publication Critical patent/WO2008154307A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/14—Time supervision arrangements, e.g. real time clock
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/72—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits
    • G06F21/725—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits operating on a secure reference time value

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Technology Law (AREA)
  • Mathematical Physics (AREA)
  • Storage Device Security (AREA)
  • Electric Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Debugging And Monitoring (AREA)

Abstract

A memory device with circuitry for improving accuracy of a time estimate and a method for use therewith are disclosed. In one embodiment, a memory device receives a time stamp and measures active time with respect to the received time stamp. The memory device determines accuracy of previously-measured active time and generates a time estimate using the measured active time, the accuracy of previously-measured active time, and the received time stamp. In another embodiment, measured active time is adjusted, with or without generating a time estimate. Other embodiments are disclosed, and each of the embodiments can be used alone or together in combination.
PCT/US2008/065965 2007-06-08 2008-06-05 Memory device with circuitry for improving accuracy of a time estimate and method for use therewith WO2008154307A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08756738A EP2153299A2 (en) 2007-06-08 2008-06-05 Memory device with circuitry for improving accuracy of a time estimate and method for use therewith
CN2008800193473A CN101720455B (en) 2007-06-08 2008-06-05 Memory device with circuitry for improving accuracy of time estimate and method for use therewith
JP2010511333A JP5180292B2 (en) 2007-06-08 2008-06-05 MEMORY DEVICE PROVIDED WITH CIRCUIT FOR IMPROVING ACCURACY OF TIME ESTIMATION AND METHOD USED IN THE DEVICE

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/811,347 2007-06-08
US11/811,284 US8688924B2 (en) 2007-06-08 2007-06-08 Method for improving accuracy of a time estimate from a memory device
US11/811,284 2007-06-08
US11/811,347 US20080304364A1 (en) 2007-06-08 2007-06-08 Memory device with circuitry for improving accuracy of a time estimate

Publications (2)

Publication Number Publication Date
WO2008154307A2 WO2008154307A2 (en) 2008-12-18
WO2008154307A3 true WO2008154307A3 (en) 2009-07-23

Family

ID=40130439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/065965 WO2008154307A2 (en) 2007-06-08 2008-06-05 Memory device with circuitry for improving accuracy of a time estimate and method for use therewith

Country Status (6)

Country Link
EP (1) EP2153299A2 (en)
JP (1) JP5180292B2 (en)
KR (1) KR20100017715A (en)
CN (1) CN101720455B (en)
TW (1) TW200907686A (en)
WO (1) WO2008154307A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109388617B (en) * 2018-10-31 2020-10-30 厦门市美亚柏科信息股份有限公司 Method and device for judging reliability of file timestamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316517A (en) * 1996-08-15 1998-02-25 Nec Corp Selective call radio receiver
EP1094374A1 (en) * 1999-10-20 2001-04-25 Sony International (Europe) GmbH Mobile terminal for a wireless telecommunication system with accurate real time generation
WO2004075525A1 (en) * 2003-02-20 2004-09-02 Ase R & D Europe Method for offering time on smart card and method for time registration by means of mobile communication device
WO2007148319A2 (en) * 2006-06-20 2007-12-27 Nds Limited Time information management system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3419407B1 (en) * 2002-03-29 2003-06-23 セイコーエプソン株式会社 Electronic device and reception control method for electronic device
JP2005063079A (en) * 2003-08-11 2005-03-10 Matsushita Electric Ind Co Ltd Memory card device, right management system and time management method
JP3949648B2 (en) * 2003-12-05 2007-07-25 株式会社東芝 Mobile communication terminal
JP4301035B2 (en) * 2004-03-02 2009-07-22 ソニー株式会社 Reproduction time management system, reproduction time management method, reproduction apparatus, reproduction method, and recording medium
JP2005331461A (en) * 2004-05-21 2005-12-02 Seiko Epson Corp Radio-controlled timepiece, its control method, its control program, and storage medium
US7411868B2 (en) * 2004-11-14 2008-08-12 International Business Machines Corporation Estimation of time within untrusted time device disconnected from trusted time device
JP4680686B2 (en) * 2005-06-06 2011-05-11 アドバンス・デザイン株式会社 Storage medium for computer terminal
KR20070059380A (en) * 2005-12-06 2007-06-12 삼성전자주식회사 Method and apparatus for implementing secure clock of device without internal power source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316517A (en) * 1996-08-15 1998-02-25 Nec Corp Selective call radio receiver
EP1094374A1 (en) * 1999-10-20 2001-04-25 Sony International (Europe) GmbH Mobile terminal for a wireless telecommunication system with accurate real time generation
WO2004075525A1 (en) * 2003-02-20 2004-09-02 Ase R & D Europe Method for offering time on smart card and method for time registration by means of mobile communication device
WO2007148319A2 (en) * 2006-06-20 2007-12-27 Nds Limited Time information management system

Also Published As

Publication number Publication date
EP2153299A2 (en) 2010-02-17
WO2008154307A2 (en) 2008-12-18
TW200907686A (en) 2009-02-16
KR20100017715A (en) 2010-02-16
CN101720455A (en) 2010-06-02
JP2010531486A (en) 2010-09-24
JP5180292B2 (en) 2013-04-10
CN101720455B (en) 2013-08-14

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