DE59010785D1 - Electronic anti-theft device - Google Patents

Electronic anti-theft device

Info

Publication number
DE59010785D1
DE59010785D1 DE59010785T DE59010785T DE59010785D1 DE 59010785 D1 DE59010785 D1 DE 59010785D1 DE 59010785 T DE59010785 T DE 59010785T DE 59010785 T DE59010785 T DE 59010785T DE 59010785 D1 DE59010785 D1 DE 59010785D1
Authority
DE
Germany
Prior art keywords
theft device
electronic anti
electronic
theft
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 - Fee Related
Application number
DE59010785T
Other languages
German (de)
Inventor
Markus Martinides
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.)
Actron Entwicklungs AG
Original Assignee
Actron Entwicklungs AG
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 Actron Entwicklungs AG filed Critical Actron Entwicklungs AG
Application granted granted Critical
Publication of DE59010785D1 publication Critical patent/DE59010785D1/en
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
    • 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
    • G08B13/2471—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
    • G08B13/2488—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)
  • Mobile Radio Communication Systems (AREA)
DE59010785T 1989-03-22 1990-02-02 Electronic anti-theft device Expired - Fee Related DE59010785D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH107889A CH681051A5 (en) 1989-03-22 1989-03-22

Publications (1)

Publication Number Publication Date
DE59010785D1 true DE59010785D1 (en) 1998-02-05

Family

ID=4201949

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59010785T Expired - Fee Related DE59010785D1 (en) 1989-03-22 1990-02-02 Electronic anti-theft device

Country Status (4)

Country Link
EP (1) EP0388609B1 (en)
JP (1) JPH02284294A (en)
CH (1) CH681051A5 (en)
DE (1) DE59010785D1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740742A (en) * 1971-05-11 1973-06-19 T Thompson Method and apparatus for actuating an electric circuit
US4215342A (en) * 1978-03-31 1980-07-29 Intex Inc. Merchandise tagging technique
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
NL8202951A (en) * 1982-07-21 1984-02-16 Nedap Nv ABSORPTION DETECTION SYSTEM.
US4531117A (en) * 1983-07-05 1985-07-23 Minnesota Mining And Manufacturing Company Variable frequency RF electronic surveillance system
US4667185A (en) * 1985-12-06 1987-05-19 Minnesota Mining And Manufacturing Company Wireless synchronization system for electronic article surveillance system

Also Published As

Publication number Publication date
EP0388609B1 (en) 1997-12-29
CH681051A5 (en) 1992-12-31
JPH02284294A (en) 1990-11-21
EP0388609A3 (en) 1991-03-20
EP0388609A2 (en) 1990-09-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee