NO920673L - Aktiviserbar/deaktiviserbar sikkerhetsmerkelapp til bruk sammen med et elektronisk sikkerhetssystem - Google Patents

Aktiviserbar/deaktiviserbar sikkerhetsmerkelapp til bruk sammen med et elektronisk sikkerhetssystem

Info

Publication number
NO920673L
NO920673L NO92920673A NO920673A NO920673L NO 920673 L NO920673 L NO 920673L NO 92920673 A NO92920673 A NO 92920673A NO 920673 A NO920673 A NO 920673A NO 920673 L NO920673 L NO 920673L
Authority
NO
Norway
Prior art keywords
resonant
frequency range
circuit
frequency
tag
Prior art date
Application number
NO92920673A
Other languages
English (en)
Other versions
NO920673D0 (no
Inventor
France Rode
Anthony F Piccoli
Original Assignee
Checkpoint Systems Inc
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 Checkpoint Systems Inc filed Critical Checkpoint Systems Inc
Publication of NO920673D0 publication Critical patent/NO920673D0/no
Publication of NO920673L publication Critical patent/NO920673L/no

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
    • G08B13/2405—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
    • G08B13/242—Tag deactivation
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

En sikkerhetsmerkelapp (10) til bruk sammen med et elektronisk sikkerhetssystem, har kretser for til å begynne med å etablere en resonanskrets (14, 14') med en første resonansfrekvens innenfor et første frekvensområde som ligger utenfor detekteringsfre- kvensområdet til det elektroniske sikkerhets- systemet. Merkelappen blir aktivisert ved å forandre resonanskretsens resonansfrekvens til en andre frekvens innenfor detekteringsfrekvensområdet ved å utsette resonanskretsen for elektromagnetisk energi innenfor det første frekvensområde på et forhåndsbestemt minimumseffektnivå, for å kort- slutte en første kretskomponent. Merkelappen deaktiviseres ved igjen å forandre resonanskretsens resonansfrekvens til en tredje resonansfrekvens innenfor et tredje frekvensområde som også ligger utenfor detekteringsfrekvensområdet, ved å utsette resonanskretsen for elektromagnetisk energi innenfor detekteringsfrekvensområdet på i det minste et forhåndsbestemt minimumseffektnivå for å kortslutte en andre kretskomponent.
NO92920673A 1990-06-27 1992-02-20 Aktiviserbar/deaktiviserbar sikkerhetsmerkelapp til bruk sammen med et elektronisk sikkerhetssystem NO920673L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/544,703 US5103210A (en) 1990-06-27 1990-06-27 Activatable/deactivatable security tag for use with an electronic security system
PCT/US1991/003798 WO1992000578A1 (en) 1990-06-27 1991-05-29 Activatable-deactivatable security tag for use with an electronic security system

Publications (2)

Publication Number Publication Date
NO920673D0 NO920673D0 (no) 1992-02-20
NO920673L true NO920673L (no) 1992-02-20

Family

ID=24173230

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92920673A NO920673L (no) 1990-06-27 1992-02-20 Aktiviserbar/deaktiviserbar sikkerhetsmerkelapp til bruk sammen med et elektronisk sikkerhetssystem

Country Status (16)

Country Link
US (1) US5103210A (no)
EP (1) EP0463233B1 (no)
JP (1) JP3030082B2 (no)
KR (1) KR100218814B1 (no)
AR (1) AR244012A1 (no)
AT (1) ATE109913T1 (no)
AU (1) AU638589B2 (no)
CA (1) CA2064001C (no)
DE (1) DE69011512T2 (no)
DK (1) DK0463233T3 (no)
ES (1) ES2057342T3 (no)
FI (1) FI108968B (no)
IE (1) IE62518B1 (no)
NO (1) NO920673L (no)
NZ (1) NZ238410A (no)
WO (1) WO1992000578A1 (no)

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Also Published As

Publication number Publication date
ATE109913T1 (de) 1994-08-15
JP3030082B2 (ja) 2000-04-10
AU638589B2 (en) 1993-07-01
IE912232A1 (en) 1992-01-01
EP0463233A2 (en) 1992-01-02
NO920673D0 (no) 1992-02-20
EP0463233B1 (en) 1994-08-10
DE69011512T2 (de) 1995-01-05
IE62518B1 (en) 1995-02-08
NZ238410A (en) 1993-06-25
CA2064001A1 (en) 1991-12-28
WO1992000578A1 (en) 1992-01-09
CA2064001C (en) 2000-02-29
AR244012A1 (es) 1993-09-30
DK0463233T3 (da) 1994-12-19
FI920695A0 (fi) 1992-02-18
DE69011512D1 (de) 1994-09-15
FI108968B (fi) 2002-04-30
EP0463233A3 (en) 1992-05-06
KR100218814B1 (ko) 1999-09-01
AU8079091A (en) 1992-01-23
US5103210A (en) 1992-04-07
ES2057342T3 (es) 1994-10-16
JPH05501468A (ja) 1993-03-18
KR920702523A (ko) 1992-09-04

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