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GB1297279A - - Google Patents

Info

Publication number
GB1297279A
GB1297279A GB1297279DA GB1297279A GB 1297279 A GB1297279 A GB 1297279A GB 1297279D A GB1297279D A GB 1297279DA GB 1297279 A GB1297279 A GB 1297279A
Authority
GB
United Kingdom
Prior art keywords
wave
frequency
coil
produce
july
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
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 filed Critical
Publication of GB1297279A publication Critical patent/GB1297279A/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
    • G08B13/242—Tag deactivation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
    • 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
    • G08B13/2451—Specific applications combined with EAS
    • G08B13/2454—Checking of authorisation of a person accessing tagged items in an EAS system

Landscapes

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

Abstract

1297279 Transponders; inductive signalling OMRON TATEISI ELECTRONICS CO 1 July 1970 [9 July 1969] 31893/70 Headings H4L and H4U A system for detecting the presence of a device comprises means for transmitting an electromagnetic wave of a first frequency so that the device receives said wave to produce an electromagnetic wave of a second frequency and means for receiving send second wave to produce a corresponding output signal, said device comprising a base-plate of insulating material, a pick-up coil disposed around the periphery of the base-plate to receive said first frequency wave and an oscillator disposed on the baseplate and operated by the voltage supplied by the pick-up coil to produce said second frequency waves. The tuned coil of the osicllator is arranged to lie within the receiving coil and acts as a transmitting antenna. The device may be attached to articles to prevent pilfering or may be carried by members of a club of the like to prove their membership and may be in the form of a printed circuit.
GB1297279D 1969-07-09 1970-07-01 Expired GB1297279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5470869 1969-07-09

Publications (1)

Publication Number Publication Date
GB1297279A true GB1297279A (en) 1972-11-22

Family

ID=12978285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297279D Expired GB1297279A (en) 1969-07-09 1970-07-01

Country Status (4)

Country Link
CA (1) CA926969A (en)
DE (1) DE2033796A1 (en)
FR (1) FR2051626B1 (en)
GB (1) GB1297279A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002595A1 (en) * 1977-12-09 1979-06-27 Lintech Instruments Limited Transponders
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
GB2202108A (en) * 1987-03-03 1988-09-14 Silkeborg Elect Identific Syst Transponder identification

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL192276C (en) * 1978-11-28 1997-04-03 James Arnold Rodrian Animal identification system.
FR2443725B1 (en) * 1978-12-08 1985-11-29 Rodrian James ANIMAL IDENTIFICATION DEVICE
WO1981001063A1 (en) * 1979-10-09 1981-04-16 Mastiff Security Syst Ltd Computer system
EP0034230A1 (en) * 1980-02-19 1981-08-26 Jerome Hal Lemelson Switch and lock activating system and method
WO1981002801A1 (en) * 1980-03-27 1981-10-01 Polymark Int Ltd System and method for identifying an article to which a label is attached
DE3043557C2 (en) * 1980-11-19 1987-12-23 Hartmut 6900 Heidelberg Bernot Device for acquiring, transmitting and processing data in optically readable codes
DE3234345A1 (en) * 1982-09-16 1984-03-22 Robert Bosch Gmbh, 7000 Stuttgart CODING SYSTEM FOR DETECTING INFORMATION FROM WORKPIECE CARRIERS AND THE LIKE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470762A (en) * 1965-03-05 1967-02-24 Method and apparatus for detecting the prohibited passage of an article through a checkpoint
CH476358A (en) * 1968-04-05 1969-07-31 Cholley Jacques Monitoring facility for an object

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002595A1 (en) * 1977-12-09 1979-06-27 Lintech Instruments Limited Transponders
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
GB2202108A (en) * 1987-03-03 1988-09-14 Silkeborg Elect Identific Syst Transponder identification

Also Published As

Publication number Publication date
CA926969A (en) 1973-05-22
FR2051626B1 (en) 1974-03-22
DE2033796A1 (en) 1971-02-18
FR2051626A1 (en) 1971-04-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee