GB1406500A - Electronic security systems - Google Patents

Electronic security systems

Info

Publication number
GB1406500A
GB1406500A GB6023472A GB6023472A GB1406500A GB 1406500 A GB1406500 A GB 1406500A GB 6023472 A GB6023472 A GB 6023472A GB 6023472 A GB6023472 A GB 6023472A GB 1406500 A GB1406500 A GB 1406500A
Authority
GB
United Kingdom
Prior art keywords
detector
circuit
transmitter
tag
frequency
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
GB6023472A
Other languages
English (en)
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
Priority claimed from US00214361A external-priority patent/US3810147A/en
Priority claimed from US262465A external-priority patent/US3863244A/en
Application filed by Individual filed Critical Individual
Publication of GB1406500A publication Critical patent/GB1406500A/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
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06—COMPUTING OR CALCULATING; 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
    • G06K19/0672—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 with resonating marks
    • 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
    • G08B13/2428—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
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components
    • H03H5/02—One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/80—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple passive components, e.g. resistors, capacitors or inductors
    • H10D86/85—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple passive components, e.g. resistors, capacitors or inductors characterised by only passive components

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Burglar Alarm Systems (AREA)
GB6023472A 1971-12-30 1972-12-29 Electronic security systems Expired GB1406500A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00214361A US3810147A (en) 1971-12-30 1971-12-30 Electronic security system
US262465A US3863244A (en) 1972-06-14 1972-06-14 Electronic security system having improved noise discrimination

Publications (1)

Publication Number Publication Date
GB1406500A true GB1406500A (en) 1975-09-17

Family

ID=26908916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6023472A Expired GB1406500A (en) 1971-12-30 1972-12-29 Electronic security systems

Country Status (3)

Country Link
JP (1) JPS4877695A (enrdf_load_stackoverflow)
FR (1) FR2166216B1 (enrdf_load_stackoverflow)
GB (1) GB1406500A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260983A (en) 1978-01-11 1981-04-07 Tag Radionics Limited Presence sensing detector and system for detecting a receiver/transmitter device affixed to an article
FR2512557A1 (fr) * 1981-09-04 1983-03-11 Sensormatic Electronics Corp Marqueur ou etiquette antivol et dispositif de surveillance en comportant application
GB2133950A (en) * 1982-12-14 1984-08-01 Shigekazu Takeda Electronic surveillance sytems
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
GB2211702A (en) * 1987-10-28 1989-07-05 Monarch Marking Systems Inc Tags for use in electronic article surveillance systems
US4862160A (en) * 1983-12-29 1989-08-29 Revlon, Inc. Item identification tag for rapid inventory data acquisition system
GB2247594A (en) * 1987-10-28 1992-03-04 Monarch Marking Systems Inc Tags for use in electronic article surveillance systems.
EP1760625A1 (en) * 2005-08-29 2007-03-07 Datamars SA RFID system and a method for improving the detection efficiency of the RFID system
GB2445171A (en) * 2006-12-22 2008-07-02 Fortium Technologies Ltd An rfid tag comprising an array of resonators each comprising a conductive part including a weak section.

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168496A (en) * 1977-10-05 1979-09-18 Lichtblau G J Quasi-stationary noise cancellation system
US4510489A (en) * 1982-04-29 1985-04-09 Allied Corporation Surveillance system having magnetomechanical marker
JPS60112893U (ja) * 1983-12-30 1985-07-31 三谷　尚弘 共振器
AU584306B2 (en) * 1984-04-23 1989-05-25 Checkpoint Systems, Inc. Electronically detectable and deactivatable security tag
FR2605747B1 (fr) * 1986-10-28 1989-05-12 Checkpoint Sa Procede de protection d'objets contre le vol et objets proteges selon ce procede
US5162694A (en) * 1989-10-25 1992-11-10 Zenith Electronics Corporation Segmented shadow mask support structure for flat tension mask color crt
US6189789B1 (en) * 1998-09-09 2001-02-20 International Business Machines Corporation Method and system for a merchandise checkout system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085704A (en) * 1964-10-30 1967-10-04 Nat Res Dev Apparatus for detecting an object
US3500373A (en) * 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection
DK134666B (da) * 1970-02-20 1976-12-20 Svejsecentralen Fremgangsmåde til mærkning og senere lokalisering, identifikation og registrering af fysiske objekter samt elektronisk mærkningsoragn til anvendelse ved udøvelse af fremgangsmåden.
US3624631A (en) * 1970-04-27 1971-11-30 Sanders Associates Inc Pilferage control system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260983A (en) 1978-01-11 1981-04-07 Tag Radionics Limited Presence sensing detector and system for detecting a receiver/transmitter device affixed to an article
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
FR2512557A1 (fr) * 1981-09-04 1983-03-11 Sensormatic Electronics Corp Marqueur ou etiquette antivol et dispositif de surveillance en comportant application
GB2133950A (en) * 1982-12-14 1984-08-01 Shigekazu Takeda Electronic surveillance sytems
US4862160A (en) * 1983-12-29 1989-08-29 Revlon, Inc. Item identification tag for rapid inventory data acquisition system
GB2211702A (en) * 1987-10-28 1989-07-05 Monarch Marking Systems Inc Tags for use in electronic article surveillance systems
GB2247594A (en) * 1987-10-28 1992-03-04 Monarch Marking Systems Inc Tags for use in electronic article surveillance systems.
GB2247594B (en) * 1987-10-28 1992-10-21 Monarch Marking Systems Inc Method of making tags for use in electronic article surveillance systems
GB2211702B (en) * 1987-10-28 1992-11-11 Monarch Marking Systems Inc Tags for use in electronic article surveillance systems and methods of making them
EP1760625A1 (en) * 2005-08-29 2007-03-07 Datamars SA RFID system and a method for improving the detection efficiency of the RFID system
US7432809B2 (en) 2005-08-29 2008-10-07 Datamars S.A. System and method for improving the detection efficiency of an identification system including a transponder and a reader
GB2445171A (en) * 2006-12-22 2008-07-02 Fortium Technologies Ltd An rfid tag comprising an array of resonators each comprising a conductive part including a weak section.

Also Published As

Publication number Publication date
FR2166216B1 (enrdf_load_stackoverflow) 1978-12-29
DE2263905A1 (de) 1973-07-12
JPS4877695A (enrdf_load_stackoverflow) 1973-10-18
FR2166216A1 (enrdf_load_stackoverflow) 1973-08-10
DE2263905B2 (de) 1976-12-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee