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IT8149490A0 - Dispositivo antifurto che fa uso di bersagli magnetici - Google Patents

Dispositivo antifurto che fa uso di bersagli magnetici

Info

Publication number
IT8149490A0
IT8149490A0 IT8149490A IT4949081A IT8149490A0 IT 8149490 A0 IT8149490 A0 IT 8149490A0 IT 8149490 A IT8149490 A IT 8149490A IT 4949081 A IT4949081 A IT 4949081A IT 8149490 A0 IT8149490 A0 IT 8149490A0
Authority
IT
Italy
Prior art keywords
theft device
uses magnetic
magnetic targets
targets
theft
Prior art date
Application number
IT8149490A
Other languages
English (en)
Other versions
IT1142894B (it
Inventor
Michael Nelson Cooper
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 IT8149490A0 publication Critical patent/IT8149490A0/it
Application granted granted Critical
Publication of IT1142894B publication Critical patent/IT1142894B/it

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
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • 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
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/266—One coil at each side, e.g. with primary and secondary coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/22—Capacitive coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation

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)
  • Computer Networks & Wireless Communication (AREA)
  • Burglar Alarm Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
IT49490/81A 1980-10-31 1981-10-15 Dispositivo antifurto che fa uso di bersagli magnetici IT1142894B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/204,005 US4384281A (en) 1980-10-31 1980-10-31 Theft detection apparatus using saturable magnetic targets

Publications (2)

Publication Number Publication Date
IT8149490A0 true IT8149490A0 (it) 1981-10-15
IT1142894B IT1142894B (it) 1986-10-15

Family

ID=22756220

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49490/81A IT1142894B (it) 1980-10-31 1981-10-15 Dispositivo antifurto che fa uso di bersagli magnetici

Country Status (12)

Country Link
US (1) US4384281A (it)
JP (1) JPS57134789A (it)
AU (1) AU539605B2 (it)
BE (1) BE890920A (it)
CA (1) CA1168727A (it)
DE (1) DE3143002A1 (it)
FR (1) FR2493531B1 (it)
GB (4) GB2087197B (it)
IT (1) IT1142894B (it)
NL (1) NL8104644A (it)
SE (1) SE8106399L (it)
ZA (1) ZA816599B (it)

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US4553136A (en) * 1983-02-04 1985-11-12 Allied Corporation Amorphous antipilferage marker
US4623877A (en) * 1983-06-30 1986-11-18 Knogo Corporation Method and apparatus for detection of targets in an interrogation zone
US4665387A (en) * 1983-07-13 1987-05-12 Knogo Corporation Method and apparatus for target deactivation and reactivation in article surveillance systems
CA1234892A (en) * 1984-02-16 1988-04-05 Pierre Taillefer Security tag detection system
US4642613A (en) * 1984-03-16 1987-02-10 Knogo Corporation Electronic theft detection apparatus with responder elements on protected articles
US4583083A (en) * 1984-06-28 1986-04-15 Bogasky John J Checkout station to reduce retail theft
GB2164824A (en) * 1984-09-20 1986-03-26 Stc Plc Access control system
US4622542A (en) * 1985-06-26 1986-11-11 Controlled Information Corporation Magnetic article surveillance system, method and coded marker
US4658241A (en) * 1985-09-17 1987-04-14 Allied Corporation Surveillance system including transmitter and receiver synchronized by power line zero crossings
US4683461A (en) * 1985-09-17 1987-07-28 Allied Corporation Inductive magnetic field generator
DE3600307A1 (de) * 1986-01-08 1987-07-09 Horst Merchel Transportwagen fuer einkaufsgut oder reisegepaeck
DK161227C (da) * 1986-01-27 1991-11-25 Antonson Security Denmark Aps Apparat til synkronisering af tyveridetektorer
US4684930A (en) * 1986-03-18 1987-08-04 Knogo Corporation Method and apparatus for deactivating targets used in electromagnetic type article surveillance systems
USD294234S (en) 1986-06-05 1988-02-16 Checkpoint Systems, Inc. Electronic article surveillance system
US4779076A (en) * 1987-05-20 1988-10-18 Controlled Information Corp. Deactivatable coded marker and magnetic article surveillance system
GB2247383B (en) * 1987-08-28 1992-07-29 Sensormatic Electronics Corp Antenna for use in an article surveillance system
US4859991A (en) * 1987-08-28 1989-08-22 Sensormatic Electronics Corporation Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation
US4813564A (en) * 1988-02-25 1989-03-21 Westinghouse Electric Corp. Package
NL8800546A (nl) * 1988-03-04 1989-10-02 Nedap Nv Eenwindingantennespoel voor draadloos electromagnetisch detectiesysteem.
USD319195S (en) 1988-09-27 1991-08-20 Minnesota Mining And Manufacturing Company Interrogation gate for an electronic article surveillance system
USD318247S (en) 1989-09-11 1991-07-16 Checkpoint Systems, Inc. Electronic article surveillance antenna for a theft detection system
USD317272S (en) 1989-10-06 1991-06-04 Minnesota Mining And Manufacturing Company Electronic article surveillance unit
US5057095A (en) * 1989-11-16 1991-10-15 Fabian Carl E Surgical implement detector utilizing a resonant marker
US5029291A (en) * 1990-04-10 1991-07-02 Knogo Corporation Electromagnetic sensor element and methods and apparatus for making and using same
NL9100026A (nl) * 1991-01-09 1992-08-03 Texas Instruments Holland Ondervraagstation voor het identificeren van over een transportbaan voortbewogen objecten.
NL9100111A (nl) * 1991-01-23 1992-08-17 Texas Instruments Holland Antennestelsel voor een ondervraagstation voor het identificeren van objecten.
DE4200082A1 (de) * 1992-01-03 1993-07-08 Minnesota Mining & Mfg Vorrichtung und verfahren zum erkennen eines magnetisierbaren markierungselementes
US5883968A (en) * 1994-07-05 1999-03-16 Aw Computer Systems, Inc. System and methods for preventing fraud in retail environments, including the detection of empty and non-empty shopping carts
US5552778A (en) * 1994-11-23 1996-09-03 International Business Machines Corporation Multibit bimorph magnetic tags using acoustic or magnetic interrogation for identification of an object coupled thereto
US5602528A (en) * 1995-06-20 1997-02-11 Marian Rubber Products Company, Inc. Theft detection marker and method
US5812065A (en) 1995-08-14 1998-09-22 International Business Machines Corporation Modulation of the resonant frequency of a circuit using an energy field
US7123129B1 (en) 1995-08-14 2006-10-17 Intermec Ip Corp. Modulation of the resonant frequency of a circuit using an energy field
US5703565A (en) * 1996-02-23 1997-12-30 Sensormatic Electronics Corporation Transformer coupled switching transmitter for electronic article surveillance system
US5653192A (en) * 1996-03-06 1997-08-05 Alfa Laval Agri Inc. Livestock identification apparatus
DE19621823A1 (de) * 1996-05-31 1997-12-04 Vendoret Holding Sa Pfandkarte mit Sender
US5751255A (en) * 1996-06-07 1998-05-12 Carter, Jr.; Philip S. Electrically small receiving antennas
US6362737B1 (en) * 1998-06-02 2002-03-26 Rf Code, Inc. Object Identification system with adaptive transceivers and methods of operation
US6307468B1 (en) * 1999-07-20 2001-10-23 Avid Identification Systems, Inc. Impedance matching network and multidimensional electromagnetic field coil for a transponder interrogator
DE10139502C1 (de) * 2001-08-10 2003-03-20 Diehl Munitionssysteme Gmbh Verfahren und Vorrichtung zum Auffinden von Streumunition-Blindgängern
AU2002342054A1 (en) 2001-10-10 2003-04-22 Ranger Security Detectors Inc. System and method for scanning individuals for illicit objects
US20040102870A1 (en) * 2002-11-26 2004-05-27 Andersen Scott Paul RFID enabled paper rolls and system and method for tracking inventory
USD553294S1 (en) * 2004-03-29 2007-10-16 Reckitt Benckiser N.V. Capsule
US7864107B1 (en) 2005-07-30 2011-01-04 Rockwell Collins, Inc. RF receiver sensing by harmonic generation
US7639178B1 (en) * 2005-11-04 2009-12-29 Rockwell Collins, Inc. System and method for detecting receivers
US8143997B2 (en) * 2008-06-30 2012-03-27 International Business Machines Corporation System for self-service checkout inventory control
US20100186525A1 (en) * 2009-01-26 2010-07-29 Chris Mashburn Wheelchair and Method of Security Screening a Wheelchair
JP2014030184A (ja) * 2012-07-06 2014-02-13 Panasonic Corp 通信装置及び無線通信システム
US9424724B2 (en) 2013-08-02 2016-08-23 Bibliotheca Rfid Library Systems Ag Single turn magnetic drive loop for electronic article surveillance
ES2667121B2 (es) * 2017-12-27 2018-11-05 Universidad Politécnica de Madrid Sistema inductivo de transmisión/recepción de datos mediante bloqueo de la generación de armónicos de un núcleo ferromagnético
GB201805257D0 (en) 2018-03-29 2018-05-16 Nicoventures Holdings Ltd An aerosol delivery device, an article for use therewith, and a method of identifying an article
CN108595995A (zh) * 2018-05-02 2018-09-28 北京紫光微电子系统有限公司 一种用于中频射频识别卡的检测天线系统及检测方法
USD867192S1 (en) 2018-06-06 2019-11-19 Donald R. Sweeney Metal detector

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FR763681A (fr) * 1933-11-10 1934-05-04 Procédé de repérage des objets par modification d'un champ magnétique
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US4118693A (en) * 1977-05-09 1978-10-03 Knogo Corporation Method and apparatus for producing uniform electromagnetic fields in an article detection system
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Also Published As

Publication number Publication date
FR2493531B1 (fr) 1985-11-22
IT1142894B (it) 1986-10-15
GB2101454B (en) 1984-05-23
ZA816599B (en) 1983-02-23
CA1168727A (en) 1984-06-05
DE3143002A1 (de) 1982-05-19
GB2101455B (en) 1984-05-23
US4384281A (en) 1983-05-17
AU7621081A (en) 1982-05-06
GB2087197B (en) 1984-05-23
GB2101454A (en) 1983-01-12
SE8106399L (sv) 1982-05-01
GB2087197A (en) 1982-05-19
FR2493531A1 (fr) 1982-05-07
AU539605B2 (en) 1984-10-04
GB2101455A (en) 1983-01-12
BE890920A (fr) 1982-04-29
GB2101456B (en) 1984-05-23
JPS57134789A (en) 1982-08-20
GB2101456A (en) 1983-01-12
NL8104644A (nl) 1982-05-17

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