WO2006105100A3 - Suppression de rayonnement emi dans un systeme de surveillance d'articles electroniques - Google Patents

Suppression de rayonnement emi dans un systeme de surveillance d'articles electroniques Download PDF

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Publication number
WO2006105100A3
WO2006105100A3 PCT/US2006/011302 US2006011302W WO2006105100A3 WO 2006105100 A3 WO2006105100 A3 WO 2006105100A3 US 2006011302 W US2006011302 W US 2006011302W WO 2006105100 A3 WO2006105100 A3 WO 2006105100A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmitter
suppression
transmitted signal
eas system
emi radiation
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.)
Ceased
Application number
PCT/US2006/011302
Other languages
English (en)
Other versions
WO2006105100A2 (fr
Inventor
Xiao Hui Yang
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.)
WG Security Products Inc
Original Assignee
WG Security Products Inc
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 WG Security Products Inc filed Critical WG Security Products Inc
Publication of WO2006105100A2 publication Critical patent/WO2006105100A2/fr
Anticipated expiration legal-status Critical
Publication of WO2006105100A3 publication Critical patent/WO2006105100A3/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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)
  • Burglar Alarm Systems (AREA)
  • Amplifiers (AREA)

Abstract

L'invention concerne un système de surveillance d'article électronique (EAS) comprenant un émetteur et un récepteur. Un amplificateur est associé à l'émetteur, les signaux non linéaires étant produits. Un filtre est utilisé pour filtrer le signal émis, ce qui permet de réduire la résistance du contenu harmonique du signal transmis. Un commutateur dévie le filtrage et arrête l'émetteur, de manière à raccourcir la durée transitoire de la suroscillation du signal émis, tout en réduisant l'interférence sur l'émetteur.
PCT/US2006/011302 2005-03-28 2006-03-28 Suppression de rayonnement emi dans un systeme de surveillance d'articles electroniques Ceased WO2006105100A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/000,000 2005-02-24
US66624205P 2005-03-28 2005-03-28
US60/666,242 2005-03-28

Publications (2)

Publication Number Publication Date
WO2006105100A2 WO2006105100A2 (fr) 2006-10-05
WO2006105100A3 true WO2006105100A3 (fr) 2007-10-25

Family

ID=37054018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/011302 Ceased WO2006105100A2 (fr) 2005-03-28 2006-03-28 Suppression de rayonnement emi dans un systeme de surveillance d'articles electroniques

Country Status (1)

Country Link
WO (1) WO2006105100A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106972491A (zh) * 2016-11-30 2017-07-21 上海新辉电器有限公司 带有多终端监测装置的开关柜谐波抑制器
CN113904701B (zh) * 2021-08-19 2023-03-07 上海龙旗科技股份有限公司 一种防止天线自干扰的系统及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675657A (en) * 1986-03-10 1987-06-23 Controlled Information Corporation Electromagnetic surveillance system with improved signal processing
US5239686A (en) * 1991-04-29 1993-08-24 Echelon Corporation Transceiver with rapid mode switching capability
US7148804B2 (en) * 2004-11-08 2006-12-12 Checkpoint Systems, Inc. System and method for detecting EAS/RFID tags using step listen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675657A (en) * 1986-03-10 1987-06-23 Controlled Information Corporation Electromagnetic surveillance system with improved signal processing
US5239686A (en) * 1991-04-29 1993-08-24 Echelon Corporation Transceiver with rapid mode switching capability
US7148804B2 (en) * 2004-11-08 2006-12-12 Checkpoint Systems, Inc. System and method for detecting EAS/RFID tags using step listen

Also Published As

Publication number Publication date
WO2006105100A2 (fr) 2006-10-05

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