GB0921496D0 - Tag detector - Google Patents

Tag detector

Info

Publication number
GB0921496D0
GB0921496D0 GBGB0921496.6A GB0921496A GB0921496D0 GB 0921496 D0 GB0921496 D0 GB 0921496D0 GB 0921496 A GB0921496 A GB 0921496A GB 0921496 D0 GB0921496 D0 GB 0921496D0
Authority
GB
United Kingdom
Prior art keywords
tag detector
tag
detector
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
GBGB0921496.6A
Other versions
GB2476050A (en
GB2476050B (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.)
Redcliffe Magtronics Ltd
Original Assignee
Redcliffe Magtronics 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
Application filed by Redcliffe Magtronics Ltd filed Critical Redcliffe Magtronics Ltd
Priority to GB1309642.5A priority Critical patent/GB2500134B/en
Priority to GB0921496.6A priority patent/GB2476050B/en
Publication of GB0921496D0 publication Critical patent/GB0921496D0/en
Publication of GB2476050A publication Critical patent/GB2476050A/en
Application granted granted Critical
Publication of GB2476050B publication Critical patent/GB2476050B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • G08B13/2408—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 ferromagnetic tags
    • G08B13/2411—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
    • G08B13/2405—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
    • G08B13/2405—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
    • G08B13/2422—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 acoustic or microwave tags
    • G08B13/2425—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
    • G08B13/2465—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
    • G08B13/2477—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
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
GB0921496.6A 2009-12-08 2009-12-08 Tag detector Expired - Fee Related GB2476050B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1309642.5A GB2500134B (en) 2009-12-08 2009-12-08 Hand-held tag detector
GB0921496.6A GB2476050B (en) 2009-12-08 2009-12-08 Tag detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0921496.6A GB2476050B (en) 2009-12-08 2009-12-08 Tag detector

Publications (3)

Publication Number Publication Date
GB0921496D0 true GB0921496D0 (en) 2010-01-20
GB2476050A GB2476050A (en) 2011-06-15
GB2476050B GB2476050B (en) 2013-11-13

Family

ID=41642123

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1309642.5A Expired - Fee Related GB2500134B (en) 2009-12-08 2009-12-08 Hand-held tag detector
GB0921496.6A Expired - Fee Related GB2476050B (en) 2009-12-08 2009-12-08 Tag detector

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1309642.5A Expired - Fee Related GB2500134B (en) 2009-12-08 2009-12-08 Hand-held tag detector

Country Status (1)

Country Link
GB (2) GB2500134B (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3878717D1 (en) * 1987-04-23 1993-04-08 Actron Entwicklungs Ag METHOD FOR DEACTIVATING A RESON LABEL AND CIRCUIT FOR IMPLEMENTING THE METHOD.
NL9002120A (en) * 1990-09-28 1992-04-16 Nedap Nv PULSE DEACTIVATOR.
WO1995012870A1 (en) * 1993-11-04 1995-05-11 Knogo Corporation Method and apparatus for automatically desensitizing sensor elements
EP0798681A1 (en) * 1996-03-29 1997-10-01 Sensormatic Electronics Corporation Pulsed interrogation signal in harmonic EAS system
US6111507A (en) * 1997-02-03 2000-08-29 Sensormatic Electronics Corporation Energizing circuit for EAS marker deactivation device
US6249229B1 (en) * 1999-08-16 2001-06-19 Checkpoint Systems, Inc., A Corp. Of Pennsylvania Electronic article security system employing variable time shifts
US6696951B2 (en) * 2001-06-13 2004-02-24 3M Innovative Properties Company Field creation in a magnetic electronic article surveillance system
US7106200B2 (en) * 2004-06-10 2006-09-12 Sensormatic Electronics Corporation Deactivator using resonant recharge
US7250866B2 (en) * 2005-06-03 2007-07-31 Sensormatic Electronics Corporation Techniques for deactivating electronic article surveillance labels using energy recovery

Also Published As

Publication number Publication date
GB201309642D0 (en) 2013-07-17
GB2476050A (en) 2011-06-15
GB2476050B (en) 2013-11-13
GB2500134A (en) 2013-09-11
GB2500134B (en) 2014-02-12

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Legal Events

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

Effective date: 20161208