GB2279477B - Security/access system - Google Patents

Security/access system

Info

Publication number
GB2279477B
GB2279477B GB9404929A GB9404929A GB2279477B GB 2279477 B GB2279477 B GB 2279477B GB 9404929 A GB9404929 A GB 9404929A GB 9404929 A GB9404929 A GB 9404929A GB 2279477 B GB2279477 B GB 2279477B
Authority
GB
United Kingdom
Prior art keywords
security
access system
access
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 - Fee Related
Application number
GB9404929A
Other versions
GB9404929D0 (en
GB2279477A (en
Inventor
Robert John Baldwin
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.)
BALDWIN JOHN CHARLES
Original Assignee
BALDWIN JOHN CHARLES
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 BALDWIN JOHN CHARLES filed Critical BALDWIN JOHN CHARLES
Publication of GB9404929D0 publication Critical patent/GB9404929D0/en
Publication of GB2279477A publication Critical patent/GB2279477A/en
Application granted granted Critical
Publication of GB2279477B publication Critical patent/GB2279477B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
    • G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
    • G06K19/07372—Means for preventing undesired reading or writing from or onto record carriers by detecting tampering with the circuit
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
GB9404929A 1993-06-28 1994-03-14 Security/access system Expired - Fee Related GB2279477B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939313332A GB9313332D0 (en) 1993-06-28 1993-06-28 Security/access system

Publications (3)

Publication Number Publication Date
GB9404929D0 GB9404929D0 (en) 1994-04-27
GB2279477A GB2279477A (en) 1995-01-04
GB2279477B true GB2279477B (en) 1997-09-03

Family

ID=10737939

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939313332A Pending GB9313332D0 (en) 1993-06-28 1993-06-28 Security/access system
GB9404929A Expired - Fee Related GB2279477B (en) 1993-06-28 1994-03-14 Security/access system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB939313332A Pending GB9313332D0 (en) 1993-06-28 1993-06-28 Security/access system

Country Status (1)

Country Link
GB (2) GB9313332D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384648B (en) * 2002-01-25 2007-01-10 Intellident Ltd Tagging system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1556328A (en) * 1976-12-14 1979-11-21 Selenia Ind Elettroniche Pay card for automatic vending machines and the like
GB2105080A (en) * 1981-08-24 1983-03-16 Standard Telephones Cables Ltd Combined credit and security card

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1556328A (en) * 1976-12-14 1979-11-21 Selenia Ind Elettroniche Pay card for automatic vending machines and the like
GB2105080A (en) * 1981-08-24 1983-03-16 Standard Telephones Cables Ltd Combined credit and security card

Also Published As

Publication number Publication date
GB9404929D0 (en) 1994-04-27
GB2279477A (en) 1995-01-04
GB9313332D0 (en) 1993-08-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980314