CA2013734A1 - Multi-mode electronic article surveillance system - Google Patents

Multi-mode electronic article surveillance system

Info

Publication number
CA2013734A1
CA2013734A1 CA2013734A CA2013734A CA2013734A1 CA 2013734 A1 CA2013734 A1 CA 2013734A1 CA 2013734 A CA2013734 A CA 2013734A CA 2013734 A CA2013734 A CA 2013734A CA 2013734 A1 CA2013734 A1 CA 2013734A1
Authority
CA
Canada
Prior art keywords
surveillance system
article surveillance
electronic article
mode electronic
article
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.)
Granted
Application number
CA2013734A
Other languages
French (fr)
Other versions
CA2013734C (en
Inventor
Harry E. Watkins
Christopher B. Plonsky
Marco A. Paez
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.)
Sensormatic Electronics Corp
Original Assignee
Sensormatic Electronics Corp
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 Sensormatic Electronics Corp filed Critical Sensormatic Electronics Corp
Publication of CA2013734A1 publication Critical patent/CA2013734A1/en
Application granted granted Critical
Publication of CA2013734C publication Critical patent/CA2013734C/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
    • G08B29/28—Self-calibration, e.g. compensating for environmental drift or ageing of components by changing the gain of an amplifier
    • 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
    • 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
    • G08B13/2482—EAS methods, e.g. description of flow chart of the detection procedure

Abstract

A magnetic article surveillance system in which surveillance is carried out by operating the system in first and second different modes of a magnetic transmitting and receiver means in order to make a determination as to the presence of an article in the zone.
CA002013734A 1989-07-24 1990-04-03 Multi-mode electronic article surveillance system Expired - Fee Related CA2013734C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US384,556 1989-07-24
US07/384,556 US5049857A (en) 1989-07-24 1989-07-24 Multi-mode electronic article surveillance system

Publications (2)

Publication Number Publication Date
CA2013734A1 true CA2013734A1 (en) 1991-01-24
CA2013734C CA2013734C (en) 1998-08-18

Family

ID=23517795

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002013734A Expired - Fee Related CA2013734C (en) 1989-07-24 1990-04-03 Multi-mode electronic article surveillance system

Country Status (9)

Country Link
US (1) US5049857A (en)
EP (1) EP0410245B1 (en)
JP (1) JP2930372B2 (en)
AR (1) AR243292A1 (en)
AU (1) AU638241B2 (en)
BR (1) BR9003559A (en)
CA (1) CA2013734C (en)
DE (1) DE69030219T2 (en)
ES (1) ES2100857T3 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387900A (en) * 1992-11-19 1995-02-07 Sensormatic Electronics Corporation EAS system with improved processing of antenna signals
SE9401450L (en) * 1994-04-26 1995-10-27 Rso Corp Method of detecting magnetic elements
US5406262A (en) * 1993-06-16 1995-04-11 Security Tag Systems, Inc. Adjusting magnetic bias field intensity in EAS presence detection system to enhance detection
US5430441A (en) * 1993-10-12 1995-07-04 Motorola, Inc. Transponding tag and method
SE9401448L (en) * 1994-04-26 1995-10-27 Rso Corp Methods and apparatus for excitation and detection of magnetic elements
SE9401436L (en) * 1994-04-26 1995-10-27 Rso Corp Amorphous bands with improved properties
SE9401449L (en) * 1994-04-26 1995-10-27 Rso Corp Methods and apparatus for encoding electronic labels
DE4436975B4 (en) * 1994-10-15 2007-10-25 Meto International Gmbh Method for electronic article surveillance
US5606322A (en) * 1994-10-24 1997-02-25 Motorola, Inc. Divergent code generator and method
SE503526C2 (en) * 1994-10-26 1996-07-01 Rso Corp Ways of detecting labels with amorphous magnetoelastic bands
US5654688A (en) * 1995-04-14 1997-08-05 Omega Research And Development, Inc. Vehicle security system having enhanced remote transmitter security
WO1996038877A1 (en) * 1995-05-30 1996-12-05 Sensormatic Electronics Corporation Eas system antenna configuration for providing improved interrogation field distribution
US5699046A (en) * 1995-11-02 1997-12-16 Sensormatic Electronics Corporation EAS system employing central and local stations with shared functions
US5600304A (en) * 1995-11-02 1997-02-04 Sensormatic Electronics Corporation EAS system with common control station for different personality local stations
US5990791A (en) * 1997-10-22 1999-11-23 William B. Spargur Anti-theft detection system
US6188310B1 (en) 1997-11-28 2001-02-13 Sensormatic Electronics Corporation Natural frequency measurement of magnetic markers
US6118378A (en) * 1997-11-28 2000-09-12 Sensormatic Electronics Corporation Pulsed magnetic EAS system incorporating single antenna with independent phasing
US5909178A (en) * 1997-11-28 1999-06-01 Sensormatic Electronics Corporation Signal detection in high noise environments
US5995002A (en) * 1997-11-28 1999-11-30 Sensormatic Electronics Corporation Line synchronized delays for multiple pulsed EAS systems
US5969659A (en) * 1997-11-28 1999-10-19 Sensormatic Electronics Corporation Analog to digital converters with extended dynamic range
US6307468B1 (en) * 1999-07-20 2001-10-23 Avid Identification Systems, Inc. Impedance matching network and multidimensional electromagnetic field coil for a transponder interrogator
US6906628B2 (en) * 2001-03-13 2005-06-14 Sensormatic Electronics Corporation Varying field electronic tag detection system
US6696951B2 (en) * 2001-06-13 2004-02-24 3M Innovative Properties Company Field creation in a magnetic electronic article surveillance system
SE0303161L (en) * 2003-11-26 2004-11-23 Gateway Security Ab Article monitoring system, as well as ways to detect if an alarm condition exists
US8933790B2 (en) * 2007-06-08 2015-01-13 Checkpoint Systems, Inc. Phase coupler for rotating fields
EP2153491A2 (en) * 2007-06-08 2010-02-17 Checkpoint Systems, Inc. Dynamic eas detection system and method
US7800490B2 (en) * 2008-01-09 2010-09-21 Sensormatic Electronics, LLC Electronic article surveillance system neural network minimizing false alarms and failures to deactivate
EP2669999B1 (en) * 2012-05-31 2018-11-14 Nxp B.V. Adjustable antenna
US9595177B2 (en) 2014-12-14 2017-03-14 Wg Security Products, Inc. Noise compensating EAS antenna system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859624A (en) * 1972-09-05 1975-01-07 Thomas A Kriofsky Inductively coupled transmitter-responder arrangement
US3990065A (en) * 1975-02-20 1976-11-02 The Magnavox Company Theft detection system
US4634975A (en) * 1984-09-17 1987-01-06 Progressive Dynamics, Inc. Method and apparatus for producing electromagnetic surveillance fields
US4658241A (en) * 1985-09-17 1987-04-14 Allied Corporation Surveillance system including transmitter and receiver synchronized by power line zero crossings
DK161227C (en) * 1986-01-27 1991-11-25 Antonson Security Denmark Aps DEVICE DETECTOR SYNCHRONIZER DEVICE
US4779076A (en) * 1987-05-20 1988-10-18 Controlled Information Corp. Deactivatable coded marker and magnetic article surveillance system
US4791412A (en) * 1988-01-28 1988-12-13 Controlled Information Corporation Magnetic article surveillance system and method

Also Published As

Publication number Publication date
AU5291690A (en) 1991-01-24
EP0410245A3 (en) 1992-01-29
AU638241B2 (en) 1993-06-24
DE69030219D1 (en) 1997-04-24
ES2100857T3 (en) 1997-07-01
CA2013734C (en) 1998-08-18
AR243292A1 (en) 1993-07-30
US5049857A (en) 1991-09-17
JP2930372B2 (en) 1999-08-03
JPH0358300A (en) 1991-03-13
EP0410245A2 (en) 1991-01-30
BR9003559A (en) 1991-08-27
DE69030219T2 (en) 1997-10-16
EP0410245B1 (en) 1997-03-19

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Legal Events

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