JPS49116998A - - Google Patents

Info

Publication number
JPS49116998A
JPS49116998A JP48136431A JP13643173A JPS49116998A JP S49116998 A JPS49116998 A JP S49116998A JP 48136431 A JP48136431 A JP 48136431A JP 13643173 A JP13643173 A JP 13643173A JP S49116998 A JPS49116998 A JP S49116998A
Authority
JP
Japan
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.)
Pending
Application number
JP48136431A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS49116998A publication Critical patent/JPS49116998A/ja
Pending 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • 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)
  • Burglar Alarm Systems (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
JP48136431A 1972-12-04 1973-12-03 Pending JPS49116998A (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US311767A US3919704A (en) 1972-12-04 1972-12-04 System and method for detecting unauthorized removal of goods from protected premises, and magnet detecting apparatus suitable for use therein

Publications (1)

Publication Number Publication Date
JPS49116998A true JPS49116998A (no) 1974-11-08

Family

ID=23208367

Family Applications (1)

Application Number Title Priority Date Filing Date
JP48136431A Pending JPS49116998A (no) 1972-12-04 1973-12-03

Country Status (5)

Country Link
US (1) US3919704A (no)
JP (1) JPS49116998A (no)
CA (1) CA1017427A (no)
DE (1) DE2360108A1 (no)
GB (1) GB1458977A (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0490293U (no) * 1990-12-12 1992-08-06

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326198A (en) * 1976-08-18 1982-04-20 Knogo Corporation Method and apparatus for the promotion of selected harmonic response signals in an article detection system
DE2732543C3 (de) * 1977-07-19 1980-08-07 Precitec Gesellschaft Fuer Praezisionstechnik Und Elektronik Mbh & Co Entwicklungs- Und Vertriebs-Kg, 7570 Baden-Baden Vorrichtung zur Erfassung von sich im Gebiet einer Grenzfläche befindenden Objekten
US4476459A (en) * 1981-10-23 1984-10-09 Knogo Corporation Theft detection method and apparatus in which the decay of a resonant circuit is detected
US4555696A (en) * 1983-06-08 1985-11-26 Brown Donald G Passageway selective detector mechanism and system
GB2154350A (en) * 1984-02-17 1985-09-04 Standard Telephones Cables Ltd Preventing misuse of information stored on computer tapes and the like
US4647917A (en) * 1984-03-26 1987-03-03 Allied Corporation Article control system having coded magnetomechanical marker
US4728938A (en) * 1986-01-10 1988-03-01 Checkpoint Systems, Inc. Security tag deactivation system
US4692747A (en) * 1986-07-17 1987-09-08 Checkpoint Systems, Inc. Article security system
GB2226636B (en) * 1988-12-05 1993-01-27 Plessey Co Plc Apparatus for sensing the movement of a local magnetic object.
GB9019013D0 (en) * 1990-08-31 1990-10-17 Gec Ferranti Defence Syst A moving magnetic field detector
DK167417B1 (da) * 1991-04-10 1993-10-25 Esselte Meto Int Gmbh Varesikringssystem
US5661470A (en) * 1994-03-04 1997-08-26 Karr; Gerald S. Object recognition system
RU2180129C2 (ru) 1996-06-19 2002-02-27 Флайинг Налл Лимитед Детектор для обнаружения присутствия магнитной метки
US7416117B1 (en) * 1998-12-21 2008-08-26 Ncr Corporation Method and apparatus for determining if a user walks away from a self-service checkout terminal during operation thereof
US6184846B1 (en) 2000-02-03 2001-02-06 Marconi Commerce Systems Inc. Loop conductor antenna for fuel dispenser
US6724311B1 (en) 2001-11-09 2004-04-20 B&G Plastics, Inc. Anti-theft hang tag
US20040069847A1 (en) * 2002-10-15 2004-04-15 Chester Kolton Electronic article surveillance marker assembly
US20150230436A1 (en) * 2014-02-14 2015-08-20 Elive Llc Magnetized mat for an aquarium
US10600026B2 (en) 2016-07-08 2020-03-24 Walmart Apollo, Llc Stocking level indication system and method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280461A (en) * 1941-10-06 1942-04-21 Morris Abrams And Morris Zippe Elimination of atmospheric radio disturbances
US3292080A (en) * 1964-11-23 1966-12-13 Emmanuel M Trikilis System and method for preventing pilferage by detection of magnetic fields
US3423674A (en) * 1965-06-29 1969-01-21 Nytronics Inc Theft-detection system for library use including a plurality of hall cells
US3747086A (en) * 1968-03-22 1973-07-17 Shoplifter International Inc Deactivatable ferromagnetic marker for detection of objects having marker secured thereto and method and system of using same
US3754226A (en) * 1968-03-22 1973-08-21 Stoplifter Int Inc Conductive-ring ferromagnetic marker and method and system for using same
US3697972A (en) * 1969-06-26 1972-10-10 Yull Brown Metal detection and alarm systems
US3665449A (en) * 1969-07-11 1972-05-23 Minnesota Mining & Mfg Method and apparatus for detecting at a distance the status and identity of objects
US3665448A (en) * 1970-08-03 1972-05-23 Hugh A Mcglinchey Electronic shoplifting prevention system
US3696379A (en) * 1970-12-02 1972-10-03 Knogo Corp Apparatus for article theft detection
US3718922A (en) * 1971-02-03 1973-02-27 L Heck Product monitoring apparatus,system and method
US3711848A (en) * 1971-02-10 1973-01-16 I D Eng Inc Method of and apparatus for the detection of stolen articles
US3706027A (en) * 1971-07-13 1972-12-12 Karl R Grice Jr Materials counting system utilizing permanent magnets and their associated fields
US3763424A (en) * 1971-07-15 1973-10-02 Sperry Rand Corp Metal detector for identifying and discriminating between objects of different size, shape, orientation and ferrous content and including an auto nulling circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0490293U (no) * 1990-12-12 1992-08-06

Also Published As

Publication number Publication date
GB1458977A (en) 1976-12-22
CA1017427A (en) 1977-09-13
DE2360108A1 (de) 1974-06-06
US3919704A (en) 1975-11-11

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