DE69015668T2 - Ladendiebstahlnachweissystem vom Transmissionstyp. - Google Patents

Ladendiebstahlnachweissystem vom Transmissionstyp.

Info

Publication number
DE69015668T2
DE69015668T2 DE69015668T DE69015668T DE69015668T2 DE 69015668 T2 DE69015668 T2 DE 69015668T2 DE 69015668 T DE69015668 T DE 69015668T DE 69015668 T DE69015668 T DE 69015668T DE 69015668 T2 DE69015668 T2 DE 69015668T2
Authority
DE
Germany
Prior art keywords
signal
phase
synchronous detector
detection system
received signal
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.)
Expired - Lifetime
Application number
DE69015668T
Other languages
English (en)
Other versions
DE69015668D1 (de
Inventor
Tallienco Wieand Harm Fockens
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.)
Nederlandsche Apparatenfabriek NEDAP NV
Original Assignee
Nederlandsche Apparatenfabriek NEDAP NV
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 Nederlandsche Apparatenfabriek NEDAP NV filed Critical Nederlandsche Apparatenfabriek NEDAP NV
Application granted granted Critical
Publication of DE69015668D1 publication Critical patent/DE69015668D1/de
Publication of DE69015668T2 publication Critical patent/DE69015668T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B13/2414—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 inductive 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
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver
DE69015668T 1989-03-17 1990-03-16 Ladendiebstahlnachweissystem vom Transmissionstyp. Expired - Lifetime DE69015668T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8900658A NL8900658A (nl) 1989-03-17 1989-03-17 Hoogfrequent winkeldiefstaldetectiesysteem volgens het transmissieprincipe.

Publications (2)

Publication Number Publication Date
DE69015668D1 DE69015668D1 (de) 1995-02-16
DE69015668T2 true DE69015668T2 (de) 1995-05-11

Family

ID=19854307

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69015668T Expired - Lifetime DE69015668T2 (de) 1989-03-17 1990-03-16 Ladendiebstahlnachweissystem vom Transmissionstyp.

Country Status (6)

Country Link
US (1) US5051727A (de)
EP (1) EP0387970B1 (de)
AT (1) ATE116755T1 (de)
DD (1) DD294585A5 (de)
DE (1) DE69015668T2 (de)
NL (1) NL8900658A (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315289A (en) * 1991-09-16 1994-05-24 Fuller Terry A Anticipatory interactive protective system
DE4200082A1 (de) * 1992-01-03 1993-07-08 Minnesota Mining & Mfg Vorrichtung und verfahren zum erkennen eines magnetisierbaren markierungselementes
US5353011A (en) * 1993-01-04 1994-10-04 Checkpoint Systems, Inc. Electronic article security system with digital signal processing and increased detection range
NL9300180A (nl) * 1993-01-28 1994-08-16 Nedap Nv Detectie van resonantie door middel van enkelzijbanddemodulatie.
US5440291A (en) * 1993-07-01 1995-08-08 Lockheed Corporation Intruder detection system for passageways and the like
NL9400076A (nl) * 1994-01-17 1995-09-01 Nedap Nv Diefstaldetectie- en identificatiesysteem.
DE4436978A1 (de) * 1994-10-15 1996-04-18 Esselte Meto Int Gmbh Anlage zur elektronischen Artikelüberwachung
DE4436977A1 (de) * 1994-10-15 1996-04-18 Esselte Meto Int Gmbh Anlage zur elektronischen Artikelüberwachung
US6320507B1 (en) * 2000-04-07 2001-11-20 Sensormatic Electronics Corporation Method for synchronization between systems
ES2348489T3 (es) * 2001-02-08 2010-12-07 Sensormatic Electronics, LLC Sincronización inalámbrica automatica de sistemas de vigilancia de árticulos electrónicos.
CA2559153C (en) 2005-09-12 2018-10-02 Acuity Brands, Inc. Light management system having networked intelligent luminaire managers
WO2007044445A2 (en) * 2005-10-05 2007-04-19 Guardian Networks, Llc A method and system for remotely monitoring and controlling field devices with a street lamp elevated mesh network
US7570220B2 (en) * 2006-06-27 2009-08-04 Sensormatic Electronics Corporation Resonant circuit tuning system with dynamic impedance matching
US8218810B1 (en) 2006-07-19 2012-07-10 Stanley Security Solutions, Inc. Signaling device
US20080107219A1 (en) * 2006-11-07 2008-05-08 Sensormatic Electronics Corporation Electronic articles surveillance system synchronization using global positioning satellite signal
US8594976B2 (en) * 2008-02-27 2013-11-26 Abl Ip Holding Llc System and method for streetlight monitoring diagnostics
AU2010295352B2 (en) 2009-09-21 2014-12-04 Checkpoint Systems, Inc. Retail product tracking system, method, and apparatus
US8508367B2 (en) 2009-09-21 2013-08-13 Checkpoint Systems, Inc. Configurable monitoring device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR763681A (fr) * 1933-11-10 1934-05-04 Procédé de repérage des objets par modification d'un champ magnétique
US3559201A (en) * 1967-01-03 1971-01-26 Gen Atronics Corp Security system
NL7708012A (nl) * 1977-07-19 1979-01-23 Nedap Nv Detectiestelsel.
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations
US4260990A (en) * 1979-11-08 1981-04-07 Lichtblau G J Asymmetrical antennas for use in electronic security systems
US4274090A (en) * 1980-02-19 1981-06-16 Knogo Corporation Detection of articles in adjacent passageways
NL8202951A (nl) * 1982-07-21 1984-02-16 Nedap Nv Absorptiedetectiestelsel.
FR2553523B1 (fr) * 1983-10-17 1986-06-13 Raibaud Guy Alarme inductive de protection contre le vol par detection de circuits resonnants
SE447428B (sv) * 1985-03-08 1986-11-10 Luxor Ab Anordning for att minska interferensstorningar mellan nerliggande detekteringssystem serskilt i samband med sa kallade butikslarmanleggningar

Also Published As

Publication number Publication date
DD294585A5 (de) 1991-10-02
EP0387970A1 (de) 1990-09-19
EP0387970B1 (de) 1995-01-04
ATE116755T1 (de) 1995-01-15
US5051727A (en) 1991-09-24
NL8900658A (nl) 1990-10-16
DE69015668D1 (de) 1995-02-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition