GB2068617B - Anti-tamper device for a data transmission system - Google Patents

Anti-tamper device for a data transmission system

Info

Publication number
GB2068617B
GB2068617B GB8002736A GB8002736A GB2068617B GB 2068617 B GB2068617 B GB 2068617B GB 8002736 A GB8002736 A GB 8002736A GB 8002736 A GB8002736 A GB 8002736A GB 2068617 B GB2068617 B GB 2068617B
Authority
GB
United Kingdom
Prior art keywords
data transmission
transmission system
tamper device
tamper
data
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
GB8002736A
Other versions
GB2068617A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8002736A priority Critical patent/GB2068617B/en
Publication of GB2068617A publication Critical patent/GB2068617A/en
Application granted granted Critical
Publication of GB2068617B publication Critical patent/GB2068617B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G08B29/08—Signalling of tampering with the line circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
GB8002736A 1980-01-28 1980-01-28 Anti-tamper device for a data transmission system Expired GB2068617B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8002736A GB2068617B (en) 1980-01-28 1980-01-28 Anti-tamper device for a data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8002736A GB2068617B (en) 1980-01-28 1980-01-28 Anti-tamper device for a data transmission system

Publications (2)

Publication Number Publication Date
GB2068617A GB2068617A (en) 1981-08-12
GB2068617B true GB2068617B (en) 1983-07-06

Family

ID=10510933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8002736A Expired GB2068617B (en) 1980-01-28 1980-01-28 Anti-tamper device for a data transmission system

Country Status (1)

Country Link
GB (1) GB2068617B (en)

Also Published As

Publication number Publication date
GB2068617A (en) 1981-08-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee