CA1213070A - Memory unit comprising a memory and a protection unit - Google Patents

Memory unit comprising a memory and a protection unit

Info

Publication number
CA1213070A
CA1213070A CA000452806A CA452806A CA1213070A CA 1213070 A CA1213070 A CA 1213070A CA 000452806 A CA000452806 A CA 000452806A CA 452806 A CA452806 A CA 452806A CA 1213070 A CA1213070 A CA 1213070A
Authority
CA
Canada
Prior art keywords
program
address
word
processing system
memory
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.)
Expired
Application number
CA000452806A
Other languages
English (en)
French (fr)
Inventor
Cecil H. Kaplinsky
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1213070A publication Critical patent/CA1213070A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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]
    • G06F21/12—Protecting executable software
    • G06F21/121—Restricting unauthorised execution of programs
    • G06F21/125—Restricting unauthorised execution of programs by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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]
    • G06F21/12—Protecting executable software
    • G06F21/121—Restricting unauthorised execution of programs
    • G06F21/123—Restricting unauthorised execution of programs by using dedicated hardware, e.g. dongles, smart cards, cryptographic processors, global positioning systems [GPS] devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Technology Law (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Storage Device Security (AREA)
CA000452806A 1983-04-29 1984-04-26 Memory unit comprising a memory and a protection unit Expired CA1213070A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48741183A 1983-04-29 1983-04-29
US487,411 1983-04-29

Publications (1)

Publication Number Publication Date
CA1213070A true CA1213070A (en) 1986-10-21

Family

ID=23935622

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000452806A Expired CA1213070A (en) 1983-04-29 1984-04-26 Memory unit comprising a memory and a protection unit

Country Status (10)

Country Link
JP (1) JPS603024A (Direct)
CA (1) CA1213070A (Direct)
DE (1) DE3415209A1 (Direct)
FR (1) FR2545244B1 (Direct)
GB (1) GB2140592B (Direct)
HK (1) HK38788A (Direct)
IE (1) IE55440B1 (Direct)
IT (1) IT1209538B (Direct)
SE (1) SE462188B (Direct)
SG (1) SG10488G (Direct)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60177498A (ja) * 1984-02-23 1985-09-11 Fujitsu Ltd 半導体記憶装置
GB8507427D0 (en) * 1985-03-21 1985-05-01 Robertson J A Prevention of soft & hardware copying
DE3526130A1 (de) * 1985-07-22 1987-01-29 Lang Klaus Dipl Ing Digitaler programmschutzbaustein
JP4892167B2 (ja) 2000-07-18 2012-03-07 シンプレックス メジャー センドリアン ベルハッド ディジタル・データ保護構成
FR2823398B1 (fr) 2001-04-04 2003-08-15 St Microelectronics Sa Extraction d'une donnee privee pour authentification d'un circuit integre
FR2825873A1 (fr) * 2001-06-11 2002-12-13 St Microelectronics Sa Stockage protege d'une donnee dans un circuit integre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120030A (en) * 1977-03-11 1978-10-10 Kearney & Trecker Corporation Computer software security system
US4306289A (en) * 1980-02-04 1981-12-15 Western Electric Company, Inc. Digital computer having code conversion apparatus for an encrypted program
US4377844A (en) * 1980-02-20 1983-03-22 Marc Kaufman Address translator
GB2099616A (en) * 1981-06-03 1982-12-08 Jpm Automatic Machines Ltd Improvements relating to microprocessor units
GB2114331B (en) * 1982-01-06 1985-10-09 Emi Ltd Program storage hardware
NL8201847A (nl) * 1982-05-06 1983-12-01 Philips Nv Inrichting voor het beschermen tegen onbevoegd uitlezen van in een geheugen te memoriseren programmawoorden.

Also Published As

Publication number Publication date
JPH0334103B2 (Direct) 1991-05-21
GB8410712D0 (en) 1984-05-31
IT8420695A0 (it) 1984-04-26
DE3415209A1 (de) 1984-10-31
IE841019L (en) 1984-10-28
IT1209538B (it) 1989-08-30
SE8402285D0 (sv) 1984-04-26
JPS603024A (ja) 1985-01-09
GB2140592B (en) 1987-10-21
SE462188B (sv) 1990-05-14
FR2545244A1 (fr) 1984-11-02
SE8402285L (sv) 1984-10-30
FR2545244B1 (fr) 1990-05-04
HK38788A (en) 1988-06-03
SG10488G (en) 1988-07-01
IE55440B1 (en) 1990-09-12
GB2140592A (en) 1984-11-28

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Legal Events

Date Code Title Description
MKEX Expiry