GB1129761A - Method and apparatus for detecting the unauthorized movement of articles - Google Patents

Method and apparatus for detecting the unauthorized movement of articles

Info

Publication number
GB1129761A
GB1129761A GB909066A GB909066A GB1129761A GB 1129761 A GB1129761 A GB 1129761A GB 909066 A GB909066 A GB 909066A GB 909066 A GB909066 A GB 909066A GB 1129761 A GB1129761 A GB 1129761A
Authority
GB
United Kingdom
Prior art keywords
frequency
energy
transmitter
transponder
tuned
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
Application number
GB909066A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1129761A publication Critical patent/GB1129761A/en
Expired 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
    • 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
    • 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
    • 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
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2445—Tag integrated into item to be protected, e.g. source tagging
    • 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

1,129,761. Theft alarms. A. J. MINASY. 2 March, 1966 [5 March, 1965], No. 9090/66. Heading G4N. [Also in Divisions H3 and H4] A system for detecting the passage of an object past a check point comprises a transmitter radiating energy at a first frequency, a receiver receiving energy at a second frequency, and a transponder attached to the object to be detected which receives energy at the first frequency and radiates energy at the second frequency to actuate an alarm associated with the receiver. The transponder is an encapsulated transistor unit which may take the form of a name tag, Fig. 5 (not shown), of a garment. In one form, Fig. 2, energy received by a circuit 34 tuned to the transmitter frequency, is rectified and used to power a transistor oscillator 35 tuned to the receiver frequency. Alternatively, Fig. 7 (not shown), the oscillator may have its own power supply, the rectified energy from the transmitter being used to forward bias the transistor. The coils in the tuned circuits may act as aerials, or separate aerials may be provided. Objects likely to be loaned, e.g. library books, may be provided with ferrite rods which may be magnetized to inhibit actuation of the transponder for legitimate loans.
GB909066A 1965-03-05 1966-03-02 Method and apparatus for detecting the unauthorized movement of articles Expired GB1129761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43738365A 1965-03-05 1965-03-05

Publications (1)

Publication Number Publication Date
GB1129761A true GB1129761A (en) 1968-10-09

Family

ID=23736201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB909066A Expired GB1129761A (en) 1965-03-05 1966-03-02 Method and apparatus for detecting the unauthorized movement of articles

Country Status (4)

Country Link
BE (1) BE677359A (en)
DE (1) DE1295424B (en)
GB (1) GB1129761A (en)
SE (1) SE321883B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015295A1 (en) * 1969-04-02 1970-10-15 Unisearch Ltd., Kensington, New South Wales (Australien) Electronic surveillance system
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
FR2547422A1 (en) * 1983-06-08 1984-12-14 Espace LABEL TO BE ASSOCIATED WITH A PRODUCT OR ARTICLE TO ENABLE TO CONTROL THE PRESENCE
US4674618A (en) * 1983-12-06 1987-06-23 Mars Incorporated Tokens and token handling devices
US5583489A (en) * 1994-06-13 1996-12-10 Paxar Corporation Fabric security label
FR2742251A1 (en) * 1995-12-07 1997-06-13 Mamou Patrick Security label for clothing, designed to be deactivated on purchase

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE413359B (en) 1978-08-25 1980-05-19 Stiftelsen Inst Mikrovags DEVICE FOR ASTAD COMMUNICATION OF A SIMPLE SIDBAND
NL8200138A (en) * 1982-01-14 1983-08-01 Nedap Nv DETECTION SYSTEM.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE819566C (en) * 1949-11-23 1951-11-05 Paul Raphael Electromagnetic safety system for displaying hidden electrical conductors that have been carried along
GB723815A (en) * 1951-06-27 1955-02-09 Leo De Magondeaux Improvements in piezo-electric systems including a passive responder unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015295A1 (en) * 1969-04-02 1970-10-15 Unisearch Ltd., Kensington, New South Wales (Australien) Electronic surveillance system
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
FR2547422A1 (en) * 1983-06-08 1984-12-14 Espace LABEL TO BE ASSOCIATED WITH A PRODUCT OR ARTICLE TO ENABLE TO CONTROL THE PRESENCE
WO1984004987A1 (en) * 1983-06-08 1984-12-20 Activite Promotion Etud Servic Tag intended to be associated to a product or article to enable to check for its presence
US4674618A (en) * 1983-12-06 1987-06-23 Mars Incorporated Tokens and token handling devices
US4926996A (en) * 1983-12-06 1990-05-22 Mars Incorporated Two way communication token interrogation apparatus
US5583489A (en) * 1994-06-13 1996-12-10 Paxar Corporation Fabric security label
FR2742251A1 (en) * 1995-12-07 1997-06-13 Mamou Patrick Security label for clothing, designed to be deactivated on purchase

Also Published As

Publication number Publication date
SE321883B (en) 1970-03-16
BE677359A (en) 1966-09-05
DE1295424B (en) 1969-05-14

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