[go: up one dir, main page]

WO2006105100A3 - Suppression of emi radiation in eas system - Google Patents

Suppression of emi radiation in eas system Download PDF

Info

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
French (fr)
Other versions
WO2006105100A2 (en
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/en
Anticipated expiration legal-status Critical
Publication of WO2006105100A3 publication Critical patent/WO2006105100A3/en
Ceased 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
    • G08B13/2408—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 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)
  • Burglar Alarm Systems (AREA)
  • Amplifiers (AREA)

Abstract

An electronic article surveillance system (EAS) comprises a transmitter and a receiver. An amplifier is associated with the transmitter whereby non-linear signals are generated. A filter is provided for filtering the transmitted signal to reduce the strength of the harmonic content of the transmitted signal. A switch bypasses the filtering and turns off the transmitter to shorten ringing transient duration of the transmitted signal and thereby reduce interference at the receiver.
PCT/US2006/011302 2005-03-28 2006-03-28 Suppression of emi radiation in eas system Ceased WO2006105100A2 (en)

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 (en) 2006-10-05
WO2006105100A3 true WO2006105100A3 (en) 2007-10-25

Family

ID=37054018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/011302 Ceased WO2006105100A2 (en) 2005-03-28 2006-03-28 Suppression of emi radiation in eas system

Country Status (1)

Country Link
WO (1) WO2006105100A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106972491A (en) * 2016-11-30 2017-07-21 上海新辉电器有限公司 Switch cubicle harmonic shutter with multiple terminals monitoring device
CN113904701B (en) * 2021-08-19 2023-03-07 上海龙旗科技股份有限公司 System and method for preventing antenna self-interference

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 (en) 2006-10-05

Similar Documents

Publication Publication Date Title
WO2006026329A3 (en) Embedded antenna and filter apparatus and methodology
PL350968A1 (en) Method of transmitting an alarm signal by phone and telephone set adapted to operate in conjunction with an alarm system
MY126433A (en) Harmonic suppression in dual band mobile phones
WO2008014415A3 (en) Human body as fm antenna
AU2003228941A1 (en) Television signal receiver capable of receiving emergency alert signals
AU5163100A (en) Systems and methods for maintaining operation of a receiver co-located with a transmitter and susceptible to interference therefrom by desensitization of the receiver
AU2003233521A8 (en) Television signal receiver capable of receiving emergency alert signals
MY151904A (en) Power-scavenging receiver to generate a signal to be used to control operational state
TW200733582A (en) Compensating for analog radio component impairments to relax specifications
WO1999031633A8 (en) Remote metering
WO2007143274A3 (en) Controlling audio signals to fm transmitter and loudspeaker of hands-free adapter
EP1553761A4 (en) TELEVISION RECEIVER AND RECEIVER DEVICE
GB2471216A (en) Market data alert and news-driven alert system
DE60207199D1 (en) GREAT NOISE SIGNAL SUPPRESSION IN ELECTRONIC ARTICLE MONITORING
IN2013CN01314A (en)
WO2002001734A3 (en) Wireless transceiver with subtractive filter compensating both transmit and receive artifacts
TW200627999A (en) Phase compensation techniques to adjust for speaker deficiencies
WO2007128394A8 (en) Digital television and / or audio reception device and mobile processing unit
WO2006105100A3 (en) Suppression of emi radiation in eas system
EP2001149A3 (en) Broadcast receiver
WO2008017844A3 (en) Headset
TW200715843A (en) Receiver apparatus and receiver system
AU2002231747A1 (en) Method and receiver for reception of a composite signal
CN208353567U (en) Earphone Dolby circuit
TW200713864A (en) Receiver apparatus and receiver system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 06739844

Country of ref document: EP

Kind code of ref document: A2