AU3090392A - Method of and system for surveillance and detection using magnetic markers - Google Patents

Method of and system for surveillance and detection using magnetic markers

Info

Publication number
AU3090392A
AU3090392A AU30903/92A AU3090392A AU3090392A AU 3090392 A AU3090392 A AU 3090392A AU 30903/92 A AU30903/92 A AU 30903/92A AU 3090392 A AU3090392 A AU 3090392A AU 3090392 A AU3090392 A AU 3090392A
Authority
AU
Australia
Prior art keywords
surveillance
detection
magnetic markers
markers
magnetic
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.)
Abandoned
Application number
AU30903/92A
Inventor
Michael David Crossfield
Andrew Dames
Dafydd Geraint Davies
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.)
Meto International GmbH
Original Assignee
Esselte Meto International Produktions GmbH
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 Esselte Meto International Produktions GmbH filed Critical Esselte Meto International Produktions GmbH
Publication of AU3090392A publication Critical patent/AU3090392A/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2477—Antenna or antenna activator circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)
AU30903/92A 1991-12-04 1992-12-07 Method of and system for surveillance and detection using magnetic markers Abandoned AU3090392A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919125846A GB9125846D0 (en) 1991-12-04 1991-12-04 Improved interrogation and detection means for theft-detection systems
GB9125846 1991-12-04

Publications (1)

Publication Number Publication Date
AU3090392A true AU3090392A (en) 1993-06-28

Family

ID=10705732

Family Applications (1)

Application Number Title Priority Date Filing Date
AU30903/92A Abandoned AU3090392A (en) 1991-12-04 1992-12-07 Method of and system for surveillance and detection using magnetic markers

Country Status (3)

Country Link
AU (1) AU3090392A (en)
GB (1) GB9125846D0 (en)
WO (1) WO1993011516A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9403495D0 (en) * 1994-10-13 1994-10-13 Leif Aasbrink Device for electronic alarm systems
DE19503896A1 (en) * 1995-02-07 1996-08-08 Esselte Meto Int Gmbh Device for detecting an article provided with an electronic security element

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838409A (en) * 1973-04-13 1974-09-24 Knogo Corp Field strength uniformity control system for article theft detection system
GB2180123B (en) * 1984-12-21 1989-01-18 Senezco Limited Transponder systems
US4710752A (en) * 1986-08-08 1987-12-01 Pitney Bowes Inc. Apparatus and method for detecting a magnetic marker
US5121103A (en) * 1988-07-29 1992-06-09 Knogo Corporation Load isolated article surveillance system and antenna assembly
US4999641A (en) * 1989-09-01 1991-03-12 Monarch Marking Systems, Inc. Magnetic antenna system having independently controllable electrical field shielding and magnetic field balance
US5005001A (en) * 1990-04-05 1991-04-02 Pitney Bowes Inc. Field generation and reception system for electronic article surveillance
NL9001033A (en) * 1990-05-01 1991-12-02 Nedap Nv SHOP THEFT DETECTION SYSTEM WITH PARTIALLY PROTECTED ANTENNAS.
US5130697A (en) * 1990-10-30 1992-07-14 Sensormatic Electronics Corporation Method and apparatus for shaping a magnetic field

Also Published As

Publication number Publication date
WO1993011516A1 (en) 1993-06-10
GB9125846D0 (en) 1992-02-05

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