ZA842332B - Method and apparatus for detection of targets in an interrogation zone - Google Patents

Method and apparatus for detection of targets in an interrogation zone

Info

Publication number
ZA842332B
ZA842332B ZA842332A ZA842332A ZA842332B ZA 842332 B ZA842332 B ZA 842332B ZA 842332 A ZA842332 A ZA 842332A ZA 842332 A ZA842332 A ZA 842332A ZA 842332 B ZA842332 B ZA 842332B
Authority
ZA
South Africa
Prior art keywords
targets
detection
interrogation zone
interrogation
zone
Prior art date
Application number
ZA842332A
Other languages
English (en)
Inventor
Pierre Felix Buckens
Original Assignee
Knogo 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 Knogo Corp filed Critical Knogo Corp
Publication of ZA842332B publication Critical patent/ZA842332B/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver

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)
  • Burglar Alarm Systems (AREA)
ZA842332A 1983-06-30 1984-03-29 Method and apparatus for detection of targets in an interrogation zone ZA842332B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/509,292 US4623877A (en) 1983-06-30 1983-06-30 Method and apparatus for detection of targets in an interrogation zone

Publications (1)

Publication Number Publication Date
ZA842332B true ZA842332B (en) 1985-02-27

Family

ID=24026041

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA842332A ZA842332B (en) 1983-06-30 1984-03-29 Method and apparatus for detection of targets in an interrogation zone

Country Status (9)

Country Link
US (1) US4623877A (de)
EP (1) EP0130286B1 (de)
JP (1) JPS6027096A (de)
AU (1) AU560772B2 (de)
BR (1) BR8402596A (de)
CA (1) CA1229141A (de)
DE (1) DE3482803D1 (de)
DK (1) DK162910C (de)
ZA (1) ZA842332B (de)

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US5304983A (en) * 1991-12-04 1994-04-19 Knogo Corporation Multiple pulse responder and detection system and method of making and using same
EP0561062A1 (de) * 1992-03-17 1993-09-22 Moisei Samuel Granovsky Verfahren und elektromagnetisches Sicherheitssystem, um geschützte Gegenstände in einem Überwachungsbereich zu entdecken
US5264829A (en) * 1992-06-15 1993-11-23 Knogo Corporation Method and apparatus for theft detection using digital signal processing
US5410296A (en) * 1992-10-06 1995-04-25 Minnesota Mining And Manufacturing Company Magnetic tag deactivator for pre-existing check-out counters
US5376923A (en) * 1992-12-14 1994-12-27 Minnesota Mining And Manufacturing Company On the counter deactivator
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WO1995012870A1 (en) * 1993-11-04 1995-05-11 Knogo Corporation Method and apparatus for automatically desensitizing sensor elements
WO1995018430A1 (en) * 1993-12-30 1995-07-06 Sensormatic Electronics Corporation Article detection in a limited interrogation zone
DE19503896A1 (de) * 1995-02-07 1996-08-08 Esselte Meto Int Gmbh Einrichtung zur Detektierung eines mit einem elektronischen Sicherungselement versehenen Artikels
KR0163822B1 (ko) * 1995-05-17 1999-03-20 김은영 도난 방지기용 자기 센서 및 시스템
US5847650A (en) * 1996-10-04 1998-12-08 Knogo North America Inc. Theft resistant circuit assembly
FR2746956B1 (fr) * 1996-03-29 1998-05-07 Soplaril Sa Procede de mise en place d'au moins un fil ou une bande, generalement metallique, sur une feuille mince, machine pour la mise en oeuvre du procede, feuille comportant au moins un fil ou une bande, et bobine de cette feuille
US5716460A (en) * 1996-05-08 1998-02-10 The Arnold Engineering Company Methods for making magnetic strips
US6446049B1 (en) 1996-10-25 2002-09-03 Pole/Zero Corporation Method and apparatus for transmitting a digital information signal and vending system incorporating same
US5914692A (en) * 1997-01-14 1999-06-22 Checkpoint Systems, Inc. Multiple loop antenna with crossover element having a pair of spaced, parallel conductors for electrically connecting the multiple loops
DE19726986A1 (de) * 1997-06-25 1999-01-07 Meto International Gmbh Vorrichtung zur Überwachung von elektronischen gesicherten Artikeln in einer Überwachungszone
US5973606A (en) * 1997-12-08 1999-10-26 Sensormatic Electronics Corporation Activation/deactivation system and method for electronic article surveillance markers for use on a conveyor
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US5955950A (en) * 1998-07-24 1999-09-21 Checkpoint Systems, Inc. Low noise signal generator for use with an RFID system
US5959531A (en) * 1998-07-24 1999-09-28 Checkpoint Systems, Inc. Optical interface between receiver and tag response signal analyzer in RFID system for detecting low power resonant tags
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US6486768B1 (en) * 1998-09-16 2002-11-26 Carttronics, Llc Cart return loyalty credit system
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US7845554B2 (en) * 2000-10-30 2010-12-07 Fujitsu Frontech North America, Inc. Self-checkout method and apparatus
US7168525B1 (en) * 2000-10-30 2007-01-30 Fujitsu Transaction Solutions, Inc. Self-checkout method and apparatus including graphic interface for non-bar coded items
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FR2828016B1 (fr) * 2001-07-30 2005-03-25 Pygmalyon Antennes du genre boucle
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US9368011B2 (en) * 2012-04-24 2016-06-14 Universal Surveillance Systems, Llc Electronic article surveillance
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Also Published As

Publication number Publication date
DE3482803D1 (de) 1990-08-30
BR8402596A (pt) 1985-04-23
JPS6027096A (ja) 1985-02-12
EP0130286B1 (de) 1990-07-25
US4623877A (en) 1986-11-18
DK320584D0 (da) 1984-06-29
DK162910C (da) 1992-07-06
AU2631784A (en) 1985-02-07
EP0130286A3 (en) 1988-03-02
CA1229141A (en) 1987-11-10
EP0130286A2 (de) 1985-01-09
DK320584A (da) 1984-12-31
JPH0340438B2 (de) 1991-06-18
DK162910B (da) 1991-12-23
AU560772B2 (en) 1987-04-16

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