ES8304727A1 - Un circuito devisor de frecuencia perfeccionado. - Google Patents

Un circuito devisor de frecuencia perfeccionado.

Info

Publication number
ES8304727A1
ES8304727A1 ES512290A ES512290A ES8304727A1 ES 8304727 A1 ES8304727 A1 ES 8304727A1 ES 512290 A ES512290 A ES 512290A ES 512290 A ES512290 A ES 512290A ES 8304727 A1 ES8304727 A1 ES 8304727A1
Authority
ES
Spain
Prior art keywords
frequency
circuit
electromagnetic radiation
batteryless
portable
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
ES512290A
Other languages
English (en)
Other versions
ES512290A0 (es
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.)
ELINT CORP
Original Assignee
ELINT CORP
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 ELINT CORP filed Critical ELINT CORP
Publication of ES8304727A1 publication Critical patent/ES8304727A1/es
Publication of ES512290A0 publication Critical patent/ES512290A0/es
Granted 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
    • G08B13/2414—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
    • G08B13/2428—Tag details
    • G08B13/2431—Tag circuit details

Abstract

CIRCUITO DIVISOR DE FRECUENCIA PARA SER USADO COMO ETIQUETA ELECTRONICA EN UN SISTEMA DE DETECCION DE PRESENCIA. CONSTA DE UN PRIMER CIRCUITO DE LC QUE ES RESONANTE A UNA PRIMERA FRECUENCIA PARA DETECTAR RADIACION ELECTROMAGNETICA A DICHA PRIMERA FRECUENCIA; DE UN SEGUNDO CIRCUITO LC RESONANTE A UNA SEGUNDA FRECUENCIA, QUE ES MENOR QUE LA PRIMERA FRECUENCIA, PARA TRANSMITIR RADIACION ELECTROMAGNETICA A DICHA SEGUNDA FRECUENCIA; Y DE UN DISPOSITIVO DE CONMUTACION POR TRANSISTOR (Q ) QUE TIENE AMPLIFICACION Y QUE ACOPLA LOS CIRCUITOS PRIMERO Y SEGUNDO PARA HACER QUE EL SEGUNDO CIRCUITO TRANSMITA RADIACION ELECTROMAGNETICA A LA SEGUNDA FRECUENCIA EN RESPUESTA A QUE EL PRIMER CIRCUITO DETECTE RADIACION ELECTROMAGNETICA A LA PRIMERA FRECUENCIA. DE APLICACION EN SISTEMAS DE DETECCION DE ROBO EN TIENDAS Y ALMACENES.
ES512290A 1981-05-19 1982-05-18 Un circuito devisor de frecuencia perfeccionado. Granted ES512290A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/265,149 US4481428A (en) 1981-05-19 1981-05-19 Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation

Publications (2)

Publication Number Publication Date
ES8304727A1 true ES8304727A1 (es) 1983-03-01
ES512290A0 ES512290A0 (es) 1983-03-01

Family

ID=23009228

Family Applications (1)

Application Number Title Priority Date Filing Date
ES512290A Granted ES512290A0 (es) 1981-05-19 1982-05-18 Un circuito devisor de frecuencia perfeccionado.

Country Status (9)

Country Link
US (1) US4481428A (es)
EP (1) EP0066403B1 (es)
JP (1) JPS57196604A (es)
AT (1) ATE21180T1 (es)
DE (1) DE3272291D1 (es)
ES (1) ES512290A0 (es)
HK (1) HK40187A (es)
NO (1) NO154509C (es)
SG (1) SG2787G (es)

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US5289183A (en) * 1992-06-19 1994-02-22 At/Comm Incorporated Traffic monitoring and management method and apparatus
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US5065137A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled, two-resonant-circuit, frequency-division tag
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US5241298A (en) * 1992-03-18 1993-08-31 Security Tag Systems, Inc. Electrically-and-magnetically-coupled, batteryless, portable, frequency divider
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US5497639A (en) 1994-11-15 1996-03-12 Link Enterprises, Inc. Non-cuttable device for attachment of shoplifting detection tag
US5517179A (en) * 1995-05-18 1996-05-14 Xlink Enterprises, Inc. Signal-powered frequency-dividing transponder
US5864301A (en) * 1996-05-13 1999-01-26 Jackson; Jerome D. Systems and methods employing a plurality of signal amplitudes to identify an object
JP3147306B2 (ja) * 1996-10-17 2001-03-19 ピンポイント コーポレイション 物品追跡システム
US6812824B1 (en) 1996-10-17 2004-11-02 Rf Technologies, Inc. Method and apparatus combining a tracking system and a wireless communication system
US6208235B1 (en) 1997-03-24 2001-03-27 Checkpoint Systems, Inc. Apparatus for magnetically decoupling an RFID tag
US6072383A (en) * 1998-11-04 2000-06-06 Checkpoint Systems, Inc. RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment
DE19923862A1 (de) * 1999-05-25 2000-11-30 Georg Siegel Gmbh Zur Verwertu Warensicherungselement
MXPA02010979A (es) * 2000-05-08 2003-03-27 Checkpoint Systems Inc Sistema de deteccion e identificacion de radiofrecuencia.
GB2390509A (en) * 2002-07-03 2004-01-07 Marconi Information Systems Lt Smart label reader interfacing device
US20050003839A1 (en) * 2003-05-13 2005-01-06 Tripp Jeffrey William Decision influence data system
US20040230487A1 (en) * 2003-05-13 2004-11-18 Tripp Jeffrey William Local data access system
US7183917B2 (en) * 2003-05-19 2007-02-27 Checkpoint Systems, Inc. EAS/RFID identification hard tags
US7339464B2 (en) * 2004-04-12 2008-03-04 David Russell Detection-resistant transponder with “stealth packaging” for high-risk surveillance applications
US8388553B2 (en) * 2004-11-04 2013-03-05 Smith & Nephew, Inc. Cycle and load measurement device
JP5518335B2 (ja) 2005-08-23 2014-06-11 スミス アンド ネフュー インコーポレーテッド 遠隔測定式の整形外科インプラント
ITMI20060356U1 (it) * 2006-10-17 2008-04-18 Tommaseo Marco Dispositivo di rilevamento della movimentazione di neonati
EP2114247B1 (en) 2007-02-23 2013-10-30 Smith & Nephew, Inc. Processing sensed accelerometer data for determination of bone healing
DE102007018503B4 (de) * 2007-04-19 2011-12-22 Götting KG Anordnung zur Standlinien- oder Standortbestimmung eines Transponders
CN107115591A (zh) 2007-09-06 2017-09-01 史密夫和内修有限公司 用于与遥测植入物通信的系统和方法
DE102008039220A1 (de) 2008-08-22 2010-02-25 Götting KG Transponder sowie Arbeitsverfahren für einen solchen Transponder
RU2013154703A (ru) 2011-05-16 2015-06-27 Смит Энд Нефью, Инк. Измерение дистракции скелета
US20180040218A1 (en) * 2016-08-04 2018-02-08 Tyco Fire & Security Gmbh Pulsed electronic article surveillance detection system absent of a phasing requirement
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Also Published As

Publication number Publication date
NO154509B (no) 1986-06-23
NO154509C (no) 1986-10-01
SG2787G (en) 1987-09-18
ATE21180T1 (de) 1986-08-15
ES512290A0 (es) 1983-03-01
EP0066403A1 (en) 1982-12-08
US4481428A (en) 1984-11-06
NO821640L (no) 1982-11-22
HK40187A (en) 1987-05-29
DE3272291D1 (en) 1986-09-04
JPH0214802B2 (es) 1990-04-10
JPS57196604A (en) 1982-12-02
EP0066403B1 (en) 1986-07-30

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001