SE321883B - - Google Patents

Info

Publication number
SE321883B
SE321883B SE2667/66A SE266766A SE321883B SE 321883 B SE321883 B SE 321883B SE 2667/66 A SE2667/66 A SE 2667/66A SE 266766 A SE266766 A SE 266766A SE 321883 B SE321883 B SE 321883B
Authority
SE
Sweden
Prior art keywords
frequency
energy
transmitter
transponder
tuned
Prior art date
Application number
SE2667/66A
Inventor
A Minasy
Original Assignee
A Minasy
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 A Minasy filed Critical A Minasy
Publication of SE321883B publication Critical patent/SE321883B/xx

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.
SE2667/66A 1965-03-05 1966-03-01 SE321883B (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
SE321883B true SE321883B (en) 1970-03-16

Family

ID=23736201

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2667/66A SE321883B (en) 1965-03-05 1966-03-01

Country Status (4)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1292380A (en) * 1969-04-02 1972-10-11 Unisearch Ltd Electronic surveillance systems
SE413359B (en) 1978-08-25 1980-05-19 Stiftelsen Inst Mikrovags DEVICE FOR ASTAD COMMUNICATION OF A SIMPLE SIDBAND
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
NL8200138A (en) * 1982-01-14 1983-08-01 Nedap Nv DETECTION SYSTEM.
FR2547422A1 (en) * 1983-06-08 1984-12-14 Espace LABEL TO BE ASSOCIATED WITH A PRODUCT OR ARTICLE TO ENABLE TO CONTROL THE PRESENCE
EP0455315A3 (en) * 1983-12-06 1992-01-22 Mars Incorporated Tokens and token handling devices
EP0692774B1 (en) * 1994-06-13 2000-03-01 Paxar Corporation Fabric security label
FR2742251B1 (en) * 1995-12-07 1998-02-20 Mamou Patrick METHOD FOR PROTECTING AN ANTI-THEFT LABEL, ANTI-THEFT LABEL THEREOF, AND ARTICLE OF PARTICULARLY CLOTHING OR THE LIKE PROVIDED WITH SUCH A LABEL

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

Also Published As

Publication number Publication date
BE677359A (en) 1966-09-05
GB1129761A (en) 1968-10-09
DE1295424B (en) 1969-05-14

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