DK595785A - ELECTRONIC SECURITY SYSTEM WITH A RESPONSIBLE LABEL CIRCUIT AND DEACTIVATOR FOR THIS - Google Patents

ELECTRONIC SECURITY SYSTEM WITH A RESPONSIBLE LABEL CIRCUIT AND DEACTIVATOR FOR THIS Download PDF

Info

Publication number
DK595785A
DK595785A DK595785A DK595785A DK595785A DK 595785 A DK595785 A DK 595785A DK 595785 A DK595785 A DK 595785A DK 595785 A DK595785 A DK 595785A DK 595785 A DK595785 A DK 595785A
Authority
DK
Denmark
Prior art keywords
circuit
resonant
tag
tag circuit
security system
Prior art date
Application number
DK595785A
Other languages
Danish (da)
Other versions
DK165914B (en
DK165914C (en
DK595785D0 (en
Inventor
George Jay Lichtblau
Original Assignee
Little Inc A
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22182123&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK595785(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from PCT/US1984/000613 external-priority patent/WO1985004975A1/en
Application filed by Little Inc A filed Critical Little Inc A
Publication of DK595785A publication Critical patent/DK595785A/en
Publication of DK595785D0 publication Critical patent/DK595785D0/en
Publication of DK165914B publication Critical patent/DK165914B/en
Application granted granted Critical
Publication of DK165914C publication Critical patent/DK165914C/en

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
    • G08B13/242—Tag deactivation

Landscapes

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

Abstract

A resonant tag circuit with at least one resonant frequency operates in an electronic security system in which the tag circuit is detected and electronically deactivated in order to destroy the resonant characteristics of the tag circuit at the detection frequency. The tag circuit is designed with capacitor plates 10, 12, 22, 24 which are located closer to one another at a selected point 20, 32. In this way, a breakdown mechanism is brought about in the resonant structure of the tag. A deactivation circuit provides electromagnetic energy at a resonant frequency of the tag circuit with sufficient energy to cause electrical breakdown at the selected point 20, 32. In this way, the tag circuit is deactivated by bringing about vaporization of a conductive area or a short circuit between the capacitor plates to destroy the resonant properties of the circuit. <IMAGE>
DK595785A 1984-04-23 1985-12-20 ELECTRONIC DETECTABLE AND DISABLABLE LABEL AND ELECTRONIC SECURITY SYSTEM WITH SUCH LABEL DK165914C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8400613 1984-04-23
PCT/US1984/000613 WO1985004975A1 (en) 1982-05-10 1984-04-23 Resonant tag and deactivator for use in an electronic security system

Publications (4)

Publication Number Publication Date
DK595785A true DK595785A (en) 1985-12-20
DK595785D0 DK595785D0 (en) 1985-12-20
DK165914B DK165914B (en) 1993-02-08
DK165914C DK165914C (en) 1993-07-05

Family

ID=22182123

Family Applications (1)

Application Number Title Priority Date Filing Date
DK595785A DK165914C (en) 1984-04-23 1985-12-20 ELECTRONIC DETECTABLE AND DISABLABLE LABEL AND ELECTRONIC SECURITY SYSTEM WITH SUCH LABEL

Country Status (8)

Country Link
JP (1) JPS61501947A (en)
AU (1) AU584306B2 (en)
BR (1) BR8407314A (en)
DK (1) DK165914C (en)
FI (1) FI84668C (en)
MC (1) MC1736A1 (en)
NO (1) NO169411C (en)
ZA (1) ZA844812B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU613817B2 (en) * 1986-09-29 1991-08-08 Sensormatic Electronics Corporation Deactivatable alarm tag and methods of making and deactivating it
US4846922A (en) * 1986-09-29 1989-07-11 Monarch Marking Systems, Inc. Method of making deactivatable tags
US5103210A (en) * 1990-06-27 1992-04-07 Checkpoint Systems, Inc. Activatable/deactivatable security tag for use with an electronic security system
CH682265A5 (en) * 1991-02-12 1993-08-13 Actron Entwicklungs Ag
US5341125A (en) * 1992-01-15 1994-08-23 Sensormatic Electronics Corporation Deactivating device for deactivating EAS dual status magnetic tags

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624631A (en) * 1970-04-27 1971-11-30 Sanders Associates Inc Pilferage control system
JPS4860499A (en) * 1971-11-29 1973-08-24
JPS4877695A (en) * 1971-12-30 1973-10-18
US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
JPS5018200A (en) * 1973-06-18 1975-02-26
US3938044A (en) * 1973-11-14 1976-02-10 Lichtblau G J Antenna apparatus for an electronic security system
JPS5230836A (en) * 1975-09-03 1977-03-08 Tokai Pulp Kk Process for producing adhesives based on modified ureas
JPS5242393A (en) * 1975-09-30 1977-04-01 Dainippon Printing Co Ltd Electronic type detector

Also Published As

Publication number Publication date
AU2823384A (en) 1985-11-15
FI84668B (en) 1991-09-13
NO169411C (en) 1992-06-17
MC1736A1 (en) 1986-12-15
JPS61501947A (en) 1986-09-04
NO855242L (en) 1985-12-23
DK165914B (en) 1993-02-08
DK165914C (en) 1993-07-05
BR8407314A (en) 1986-04-15
AU584306B2 (en) 1989-05-25
DK595785D0 (en) 1985-12-20
FI855116A0 (en) 1985-12-20
FI84668C (en) 1991-12-27
JPH0340439B2 (en) 1991-06-18
ZA844812B (en) 1985-02-27
NO169411B (en) 1992-03-09
FI855116A (en) 1985-12-20

Similar Documents

Publication Publication Date Title
SE8505999D0 (en) RESONANT TAG AND DEACTIVATOR FOR USE IN AN ELECTRONIC SECURITY SYSTEM
DK472687A (en) SYSTEM FOR DISABLING THE THEFT SECURITY MARKETS
NO920673L (en) ACTIVABLE / DISABLABLE SECURITY LABEL FOR USE WITH AN ELECTRONIC SECURITY SYSTEM
US4118693A (en) Method and apparatus for producing uniform electromagnetic fields in an article detection system
CA2184135A1 (en) Deactivateable security tag
CA2199097A1 (en) Security tag and manufacturing method
CA2103355A1 (en) Stabilized Resonant Tag Circuit and Deactivator
NO941455D0 (en) Safety label with electrostatic protection
EP0041781A3 (en) Intrusion detection and alarm system
CA2304295A1 (en) Deactivateable resonant circuit
NO308498B1 (en) Anti-theft pieces
DK595785A (en) ELECTRONIC SECURITY SYSTEM WITH A RESPONSIBLE LABEL CIRCUIT AND DEACTIVATOR FOR THIS
ES2194951T3 (en) LABELS OR USEFUL SEALS IN RELATION TO AN ELECTRONIC SYSTEM OF ARTICLE SURVEILLANCE.
DK0919049T3 (en) Resonance oscillation circuit for electronic security of goods
PT78908A (en) Resonant tag circuit and deactvador for use in an electronic security system
ES8800532A1 (en) Resonant tag and deactivator for electronic security system
ES8800529A1 (en) Resonant tag and deactivator for electronic security system
ES8800527A1 (en) Resonant tag and deactivator for electronic security system
ES8800525A1 (en) Resonant tag and deactivator for electronic security system
ES8702686A1 (en) Resonant tag and deactivator for electronic security system
ATE245296T1 (en) DEVICE AND METHOD FOR SECURING AN ARTICLE AGAINST THEFT
ES8800526A1 (en) Resonant tag and deactivator for electronic security system
ES8800528A1 (en) Resonant tag and deactivator for electronic security system
ES8800530A1 (en) Resonant tag and deactivator for electronic security system
ES8800533A1 (en) Resonant tag and deactivator for electronic security system

Legal Events

Date Code Title Description
PUP Patent expired