GB2313980B - Radio-type burglar alarm systems - Google Patents

Radio-type burglar alarm systems

Info

Publication number
GB2313980B
GB2313980B GB9611699A GB9611699A GB2313980B GB 2313980 B GB2313980 B GB 2313980B GB 9611699 A GB9611699 A GB 9611699A GB 9611699 A GB9611699 A GB 9611699A GB 2313980 B GB2313980 B GB 2313980B
Authority
GB
United Kingdom
Prior art keywords
radio
burglar alarm
alarm systems
type burglar
type
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
GB9611699A
Other versions
GB9611699D0 (en
GB2313980A (en
Inventor
Walter John Aston
Brian M Stringer
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.)
Security Products UK Ltd
Original Assignee
Yale Security Products UK Ltd
Yale Security Products Ltd
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 Yale Security Products UK Ltd, Yale Security Products Ltd filed Critical Yale Security Products UK Ltd
Priority to GB9611699A priority Critical patent/GB2313980B/en
Publication of GB9611699D0 publication Critical patent/GB9611699D0/en
Publication of GB2313980A publication Critical patent/GB2313980A/en
Application granted granted Critical
Publication of GB2313980B publication Critical patent/GB2313980B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • G08B29/26—Self-calibration, e.g. compensating for environmental drift or ageing of components by updating and storing reference thresholds
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring
    • H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/88—Jamming or countermeasure characterized by its function related to allowing or preventing alarm transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)
GB9611699A 1996-06-05 1996-06-05 Radio-type burglar alarm systems Expired - Fee Related GB2313980B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9611699A GB2313980B (en) 1996-06-05 1996-06-05 Radio-type burglar alarm systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9611699A GB2313980B (en) 1996-06-05 1996-06-05 Radio-type burglar alarm systems

Publications (3)

Publication Number Publication Date
GB9611699D0 GB9611699D0 (en) 1996-08-07
GB2313980A GB2313980A (en) 1997-12-10
GB2313980B true GB2313980B (en) 1999-04-28

Family

ID=10794764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9611699A Expired - Fee Related GB2313980B (en) 1996-06-05 1996-06-05 Radio-type burglar alarm systems

Country Status (1)

Country Link
GB (1) GB2313980B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6249229B1 (en) * 1999-08-16 2001-06-19 Checkpoint Systems, Inc., A Corp. Of Pennsylvania Electronic article security system employing variable time shifts
DE10017182C2 (en) * 2000-04-07 2003-10-16 Seca Gmbh alarm device
GB0029293D0 (en) * 2000-12-01 2001-01-17 Hewlett Packard Co Device inventory by sound
ITMI20032386A1 (en) * 2003-12-05 2005-06-06 Microhard Srl DEVICE DETECTOR OF VARIATION OF BRIGHTNESS
GB2438009A (en) * 2006-02-24 2007-11-14 Location Company Ltd Vehicle security system
KR20110117240A (en) * 2009-04-02 2011-10-26 호치키 가부시키가이샤 Wireless disasters-preventing node and wireless disasters-preventing system
AU2018309176B2 (en) * 2017-08-03 2022-09-08 Alarm.Com Incorporated System and method for triggering an alarm during a sensor jamming attack

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155469A (en) * 1989-12-21 1992-10-13 Honeywell, Inc. Wireless alarm system
WO1994017505A1 (en) * 1993-01-26 1994-08-04 Paul Edouard Bouquin Tamperproof radio anti-jamming device for trespass monitoring systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155469A (en) * 1989-12-21 1992-10-13 Honeywell, Inc. Wireless alarm system
WO1994017505A1 (en) * 1993-01-26 1994-08-04 Paul Edouard Bouquin Tamperproof radio anti-jamming device for trespass monitoring systems

Also Published As

Publication number Publication date
GB9611699D0 (en) 1996-08-07
GB2313980A (en) 1997-12-10

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Legal Events

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

Effective date: 20030605