GB2313745A - Spatial magnetic interrogation - Google Patents

Spatial magnetic interrogation

Info

Publication number
GB2313745A
GB2313745A GB9713224A GB9713224A GB2313745A GB 2313745 A GB2313745 A GB 2313745A GB 9713224 A GB9713224 A GB 9713224A GB 9713224 A GB9713224 A GB 9713224A GB 2313745 A GB2313745 A GB 2313745A
Authority
GB
United Kingdom
Prior art keywords
tag
magnetic
tags
marker
high permeability
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.)
Granted
Application number
GB9713224A
Other versions
GB2313745B (en
GB9713224D0 (en
Inventor
Andrew Nicholas Dames
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.)
Flying Null Ltd
Original Assignee
Flying Null Ltd
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 GBGB9506909.2A external-priority patent/GB9506909D0/en
Priority to GB9713224A priority Critical patent/GB2313745B/en
Priority to GB9801601A priority patent/GB2322048B/en
Priority to GB9801603A priority patent/GB2322049B/en
Priority to GB9801486A priority patent/GB2322769B/en
Priority to GB9801600A priority patent/GB2322770B/en
Application filed by Flying Null Ltd filed Critical Flying Null Ltd
Publication of GB9713224D0 publication Critical patent/GB9713224D0/en
Publication of GB2313745A publication Critical patent/GB2313745A/en
Publication of GB2313745B publication Critical patent/GB2313745B/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G08B13/2451—Specific applications combined with EAS
    • G08B13/246—Check out systems combined with EAS, e.g. price information stored on EAS tag
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
    • 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
    • G08B13/2417—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 having a radio frequency identification chip
    • 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
    • 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
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material 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
    • G08B13/2462—Asset location systems combined with EAS
    • 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
    • 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
    • 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
    • G08B13/2477—Antenna or antenna activator circuit
    • 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
    • G08B13/2485—Simultaneous detection of multiple EAS tags

Abstract

Magnetic tags or markers arc disclosed, together with a variety of techniques by means of which such tags may be interrogate. In one aspect, the magnetic marker or tag which is characterised by carrying a plurality of discrete magnetically active regions in a linear array. In another aspect, the invention provides a method of interrogating a magnetic tag or marker within a predetermined interrogation zone, the tag comprising a high permeability magnetic material, for example to read data stored magnetically in the tag or to use the response of the tag to detect its prescnce and/or to determine its position within the interrogation zone, characterized in that the interrogation process includes the step of subjecting the tag sequentially to: (1) a magnetic field sufficient in field strength to saturate the high permeability magnetic material, and (2) a magnetic null as herein defined. Applications of such techniques arc described, inter alia , in relation to (a) identifying articles to which tags are attached; (b) accurate determination of position, as in the location of surgical probes; and (c) totalisation of purchases, where each item carries a tag coded with data representing its nature and its price.
GB9713224A 1995-04-04 1996-04-03 Spatial magnetic interrogation Expired - Fee Related GB2313745B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB9801601A GB2322048B (en) 1995-04-04 1996-04-03 Apparatus for interrogating magnetic tags
GB9801603A GB2322049B (en) 1995-04-04 1996-04-03 Magnetic markers or tags
GB9801486A GB2322769B (en) 1995-04-04 1996-04-03 Magnetic coding of articles
GB9801600A GB2322770B (en) 1995-04-04 1996-04-03 Device for reading magnetic tags
GB9713224A GB2313745B (en) 1995-04-04 1996-04-03 Spatial magnetic interrogation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9506909.2A GB9506909D0 (en) 1995-04-04 1995-04-04 Spatial magnetic interrogation system
PCT/GB1996/000823 WO1996031790A1 (en) 1995-04-04 1996-04-03 Spatial magnetic interrogation
GB9713224A GB2313745B (en) 1995-04-04 1996-04-03 Spatial magnetic interrogation

Publications (3)

Publication Number Publication Date
GB9713224D0 GB9713224D0 (en) 1997-08-27
GB2313745A true GB2313745A (en) 1997-12-03
GB2313745B GB2313745B (en) 1999-11-10

Family

ID=26306807

Family Applications (5)

Application Number Title Priority Date Filing Date
GB9801600A Expired - Fee Related GB2322770B (en) 1995-04-04 1996-04-03 Device for reading magnetic tags
GB9801486A Expired - Fee Related GB2322769B (en) 1995-04-04 1996-04-03 Magnetic coding of articles
GB9801603A Expired - Fee Related GB2322049B (en) 1995-04-04 1996-04-03 Magnetic markers or tags
GB9713224A Expired - Fee Related GB2313745B (en) 1995-04-04 1996-04-03 Spatial magnetic interrogation
GB9801601A Expired - Fee Related GB2322048B (en) 1995-04-04 1996-04-03 Apparatus for interrogating magnetic tags

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB9801600A Expired - Fee Related GB2322770B (en) 1995-04-04 1996-04-03 Device for reading magnetic tags
GB9801486A Expired - Fee Related GB2322769B (en) 1995-04-04 1996-04-03 Magnetic coding of articles
GB9801603A Expired - Fee Related GB2322049B (en) 1995-04-04 1996-04-03 Magnetic markers or tags

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9801601A Expired - Fee Related GB2322048B (en) 1995-04-04 1996-04-03 Apparatus for interrogating magnetic tags

Country Status (1)

Country Link
GB (5) GB2322770B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515182C2 (en) * 1998-06-18 2001-06-25 Rso Corp Method and system for remote detection of objects
JP4319270B2 (en) * 1998-08-25 2009-08-26 武蔵エンジニアリング株式会社 Object position detection method and position detection apparatus
GB9923199D0 (en) * 1999-10-01 1999-12-01 Sentec Ltd Magnetic data tags
GB0323349D0 (en) 2003-10-06 2003-11-05 Linksure Ltd Verification means
EP2081191A1 (en) 2008-01-21 2009-07-22 Tecnicas Pantra S.L. Non symmetric devices with alarms for compact discs and similar articles

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663612A (en) * 1984-02-16 1987-05-05 Sigma Security Inc. Pattern-comparing security tag detection system
US4751516A (en) * 1985-01-10 1988-06-14 Lichtblau G J Antenna system for magnetic and resonant circuit detection
WO1989006810A1 (en) * 1988-01-15 1989-07-27 Scientific Generics Limited Installation and detection method for concealed objects
US5017907A (en) * 1990-01-16 1991-05-21 Pitney Bowes Inc. Double pulse magnetic markers
EP0295028B1 (en) * 1987-06-08 1993-04-14 Esselte Meto International GmbH Magnetic devices

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1593377A (en) * 1976-12-10 1981-07-15 Emi Ltd Security document and system
GB1599120A (en) * 1978-05-19 1981-09-30 Philips Electronic Associated Detection system
GB8817855D0 (en) * 1988-07-27 1988-09-01 Emi Plc Thorn Electromagnetic identification system
US5241163A (en) * 1991-06-24 1993-08-31 Kleen-Tex Industries, Inc. Article identification apparatus and method using a ferromagnetic tag
GB9302757D0 (en) * 1993-02-11 1993-03-24 Esselte Meto Int Gmbh Method and system for detecting a marker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663612A (en) * 1984-02-16 1987-05-05 Sigma Security Inc. Pattern-comparing security tag detection system
US4751516A (en) * 1985-01-10 1988-06-14 Lichtblau G J Antenna system for magnetic and resonant circuit detection
EP0295028B1 (en) * 1987-06-08 1993-04-14 Esselte Meto International GmbH Magnetic devices
WO1989006810A1 (en) * 1988-01-15 1989-07-27 Scientific Generics Limited Installation and detection method for concealed objects
US5017907A (en) * 1990-01-16 1991-05-21 Pitney Bowes Inc. Double pulse magnetic markers

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
cont.../ "Principles of a magnetic method for labelling moving targets" pg 2988, col 1 line 29- *
cont../ line 54, see pg 2990, col 1, line 6 - col 2 line 44 *
IEEE TRANS ON MAGNETICS, vol 17, no 6 Nov 1981, New York, pg2988-2990, XP002008885 G COUDERCHON EA: *

Also Published As

Publication number Publication date
GB9801486D0 (en) 1998-03-18
GB2322770A (en) 1998-09-02
GB9801600D0 (en) 1998-03-25
GB2322049A (en) 1998-08-12
GB2313745B (en) 1999-11-10
GB2322048B (en) 1999-11-10
GB2322769A (en) 1998-09-02
GB2322770B (en) 1999-02-17
GB9713224D0 (en) 1997-08-27
GB9801603D0 (en) 1998-03-25
GB2322048A (en) 1998-08-12
GB2322049B (en) 1999-11-10
GB9801601D0 (en) 1998-03-25
GB2322769B (en) 1999-11-10

Similar Documents

Publication Publication Date Title
HK1003907A1 (en) Spatial magnetic interrogation
DE69622566D1 (en) IMPROVEMENTS RELATING TO MAGNETIC LABELS OR MARKERS
WO1996031790B1 (en) Spatial magnetic interrogation
DE68925395D1 (en) Electromagnetic identification system
US20020067265A1 (en) Intelligent Package For Controlled Product Distribution
ES2171013T3 (en) PROCEDURE AND ISSUANCE SYSTEM FOR IDENTIFICATION LABELS.
ATE551663T1 (en) METHOD AND SYSTEM FOR DETECTING RFID-TAGLED OBJECTS
WO2002041274A1 (en) A system for authentication of products and a magnetic tag utilized therein
DK510889D0 (en) PLANTS AND MARKETS USING MAGNET OR SPIN RESONANCE PHENOMENCES
EP0831410A3 (en) Magnetic markers
DE60041787D1 (en) METHOD FOR READING MULTIPLE TRANSPONDER IN A HFID SYSTEM
GB2313745A (en) Spatial magnetic interrogation
US7532123B2 (en) Magnetic tagging
CA2319238A1 (en) Magnetic coding of articles
Mc Carthy et al. EVALUATION OF THE EFFECTS OF PERTINENT FACTORS OF UHF RFID APPLICATION IN MEAT SUPPLY CHAIN
Furness Product marking and identification
AU1759800A (en) Magnetic coding of articles
JPH03222086A (en) Marker for identifying article

Legal Events

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

Effective date: 20110403