CA2057128A1 - Dispositif antivol - Google Patents

Dispositif antivol

Info

Publication number
CA2057128A1
CA2057128A1 CA2057128A CA2057128A CA2057128A1 CA 2057128 A1 CA2057128 A1 CA 2057128A1 CA 2057128 A CA2057128 A CA 2057128A CA 2057128 A CA2057128 A CA 2057128A CA 2057128 A1 CA2057128 A1 CA 2057128A1
Authority
CA
Canada
Prior art keywords
transmitter
body unit
receiver
signal
frequency
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
CA2057128A
Other languages
English (en)
Other versions
CA2057128C (fr
Inventor
Iwao Hara
Junji Higaki
Kohei Miyata
Hiroshi Matsushima
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.)
Kubota Corp
Original Assignee
Kubota 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
Priority claimed from JP3000286A external-priority patent/JP2851949B2/ja
Priority claimed from JP3000284A external-priority patent/JPH04242892A/ja
Priority claimed from JP3000283A external-priority patent/JP2836644B2/ja
Priority claimed from JP3000285A external-priority patent/JPH04242893A/ja
Application filed by Kubota Corp filed Critical Kubota Corp
Publication of CA2057128A1 publication Critical patent/CA2057128A1/fr
Application granted granted Critical
Publication of CA2057128C publication Critical patent/CA2057128C/fr
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
    • G08B13/00—Burglar, theft or intruder alarms
    • 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
    • G08B13/2428—Tag details
    • G08B13/2431—Tag circuit details
    • 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
    • G08B13/2428—Tag details
    • G08B13/2434—Tag housing and attachment details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
CA002057128A 1991-01-08 1991-12-05 Dispositif antivol Expired - Fee Related CA2057128C (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP3-285 1991-01-08
JP3-283 1991-01-08
JP3000286A JP2851949B2 (ja) 1991-01-08 1991-01-08 分離型光ピックアップ
JP3000284A JPH04242892A (ja) 1991-01-08 1991-01-08 盗難防止装置
JP28291 1991-01-08
JP3-282 1991-01-08
JP3000283A JP2836644B2 (ja) 1991-01-08 1991-01-08 盗難防止装置
JP3-86 1991-01-08
JP3-284 1991-01-08
JP3000285A JPH04242893A (ja) 1991-01-08 1991-01-08 盗難防止装置

Publications (2)

Publication Number Publication Date
CA2057128A1 true CA2057128A1 (fr) 1992-07-09
CA2057128C CA2057128C (fr) 1995-12-05

Family

ID=27517936

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002057128A Expired - Fee Related CA2057128C (fr) 1991-01-08 1991-12-05 Dispositif antivol

Country Status (5)

Country Link
US (1) US5239284A (fr)
EP (1) EP0494409B1 (fr)
KR (1) KR0136564B1 (fr)
AU (1) AU652974B2 (fr)
CA (1) CA2057128C (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR7201874U (pt) * 1992-11-06 1994-05-10 Power Szstems Ind Comercio Rep Embalagem anti-furto
DE59406644D1 (de) * 1993-06-11 1998-09-17 Actron Entwicklungs Ag Antennenvorrichtung für elektronische Warendiebstahls-Sicherungs-Anlagen
US5574665A (en) * 1994-04-29 1996-11-12 International Business Machines Corporation Receiver apparatus and method for frequency tagging
CA2196158A1 (fr) * 1994-07-29 1996-02-15 Hiroyuki Fujiuchi Alarme antivol et recepteur radio
JPH08279083A (ja) * 1995-04-07 1996-10-22 Alps Electric Co Ltd 警報付盗難監視装置
EP0768629A1 (fr) 1995-10-13 1997-04-16 MATRIX S.a.s. di G. DE ZORZI e C. Système d'alarme pour articles confinés dans une portée prédéterminée
JP3413333B2 (ja) * 1996-11-13 2003-06-03 アルプス電気株式会社 信号検出回路
GB2329797B (en) * 1997-08-19 2002-04-24 Sandor Ambrus Safety device to prevent the unlawful appropriation of shop goods
US6199309B1 (en) 1998-10-06 2001-03-13 Contempo Card Company, Inc. Merchandising markers accomodating anti-theft sensor
JP3335345B2 (ja) * 1998-11-24 2002-10-15 株式会社コージン 自鳴式物品監視装置
US20090223908A1 (en) * 2008-03-07 2009-09-10 Wal-Mart Stores, Inc. Device Display Unit
EP2154659A1 (fr) * 2008-08-11 2010-02-17 Alumetrica 2000, S.L. Système de sécurité à triple alarme et agencement d'alarme autonome

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564525A (en) * 1967-09-19 1971-02-16 Harold J Robeson Robbery protection system and device for temporarily disabling a robber and visibly marking his location
CH472748A (de) * 1968-04-09 1969-05-15 Theytaz Philibert Einrichtung zur drahtlosen Identifizierung von Objekten beim Passieren einer räumlichen Schranke
US3781860A (en) * 1972-02-14 1973-12-25 Williamson W Method and apparatus for inhibiting article theft
US4095214A (en) * 1976-06-17 1978-06-13 Knogo Corporation Electronic monitoring system and responder device
AU527839B2 (en) * 1980-02-04 1983-03-24 Protector Patent Development and Marketing Pty Ltd Theft detection and identification
US4429302A (en) * 1981-10-08 1984-01-31 I. D. Engineering, Inc. Electronic security system with noise rejection
US4573042A (en) * 1983-03-14 1986-02-25 Sensormatic Electronics Corporation Electronic article surveillance security system
SE451906B (sv) * 1986-02-13 1987-11-02 Intermodulation & Safety Syste Larmanordning innefattande en av tva delar bestaende larmbricka vilken i ett aktivt lege avger en akustisk signal da delarna fjermar sig fran varandra
DE3733808A1 (de) * 1987-10-07 1989-05-11 T E C Computer Gmbh Vorrichtung zur ueberwachung von sachen und/oder personen
DE3741780A1 (de) * 1987-12-10 1989-06-29 Karl Harms Handels Gmbh & Co K Magnetisches diebstahl- bzw. einbruch-sicherungssystem sowie hierfuer geeignetes sensor-metallelement
US4870391A (en) * 1988-04-05 1989-09-26 Knogo Corporation Multiple frequency theft detection system
US4922229A (en) * 1989-05-11 1990-05-01 Gary Guenst System for retrieving and preventing the loss or theft of keys

Also Published As

Publication number Publication date
AU652974B2 (en) 1994-09-15
AU8882591A (en) 1992-07-16
EP0494409A1 (fr) 1992-07-15
CA2057128C (fr) 1995-12-05
KR920015242A (ko) 1992-08-26
US5239284A (en) 1993-08-24
EP0494409B1 (fr) 1995-03-15
KR0136564B1 (ko) 1998-05-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed