SG2787G - Batteryless, portable, frequency divider - Google Patents

Batteryless, portable, frequency divider

Info

Publication number
SG2787G
SG2787G SG27/87A SG2787A SG2787G SG 2787 G SG2787 G SG 2787G SG 27/87 A SG27/87 A SG 27/87A SG 2787 A SG2787 A SG 2787A SG 2787 G SG2787 G SG 2787G
Authority
SG
Singapore
Prior art keywords
frequency
circuit
electromagnetic radiation
frequency divider
portable
Prior art date
Application number
SG27/87A
Other languages
English (en)
Original Assignee
Automated Security Holdings
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 Automated Security Holdings filed Critical Automated Security Holdings
Publication of SG2787G publication Critical patent/SG2787G/en

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
    • G08B13/2414—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 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
    • G08B13/2428—Tag details
    • G08B13/2431—Tag circuit details

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)
  • Telephone Function (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Materials For Medical Uses (AREA)
  • Stringed Musical Instruments (AREA)
  • Pinball Game Machines (AREA)
SG27/87A 1981-05-19 1987-01-17 Batteryless, portable, frequency divider SG2787G (en)

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 (1)

Publication Number Publication Date
SG2787G true SG2787G (en) 1987-09-18

Family

ID=23009228

Family Applications (1)

Application Number Title Priority Date Filing Date
SG27/87A SG2787G (en) 1981-05-19 1987-01-17 Batteryless, portable, frequency divider

Country Status (9)

Country Link
US (1) US4481428A (de)
EP (1) EP0066403B1 (de)
JP (1) JPS57196604A (de)
AT (1) ATE21180T1 (de)
DE (1) DE3272291D1 (de)
ES (1) ES8304727A1 (de)
HK (1) HK40187A (de)
NO (1) NO154509C (de)
SG (1) SG2787G (de)

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CA2047559C (en) * 1990-08-03 1999-07-06 Fred Wade Herman Magnetically-coupled, two-resonant-circuit, frequency-division tag
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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
EP0932840A1 (de) 1996-10-17 1999-08-04 Pinpoint Corporation System zum verfolgen von gegenständen
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
BR0110648A (pt) * 2000-05-08 2003-04-01 Checkpoint Systems Inc Sistema de detecção e identificação de radiofrequência
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
WO2006052765A2 (en) * 2004-11-04 2006-05-18 Smith & Nephew, Inc. Cycle and load measurement device
CN103637840A (zh) * 2005-08-23 2014-03-19 史密夫和内修有限公司 遥测矫形植入物
ITMI20060356U1 (it) * 2006-10-17 2008-04-18 Tommaseo Marco Dispositivo di rilevamento della movimentazione di neonati
WO2008103181A1 (en) 2007-02-23 2008-08-28 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
AU2008296209B2 (en) 2007-09-06 2014-05-29 Smith & Nephew, Inc. System and method for communicating with a telemetric implant
DE102008039220A1 (de) 2008-08-22 2010-02-25 Götting KG Transponder sowie Arbeitsverfahren für einen solchen Transponder
EP2712304A4 (de) 2011-05-16 2015-06-17 Smith & Nephew Inc Messung einer skelettdistraktion
US20180040218A1 (en) * 2016-08-04 2018-02-08 Tyco Fire & Security Gmbh Pulsed electronic article surveillance detection system absent of a phasing requirement
AU2018424202A1 (en) 2018-05-17 2020-12-03 Checkpoint Systems, Inc. Dual hard tag
US20230198521A1 (en) * 2021-10-15 2023-06-22 Kay C. Robinson, JR. Wireless Voltage link

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US3500373A (en) * 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection
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GB1604219A (en) * 1977-04-28 1981-12-02 Parmeko Ltd Detection systems
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CA1118849A (en) * 1979-08-28 1982-02-23 William D. Cornish Wideband mesfet microwave frequency divider

Also Published As

Publication number Publication date
ES512290A0 (es) 1983-03-01
JPH0214802B2 (de) 1990-04-10
NO154509B (no) 1986-06-23
DE3272291D1 (en) 1986-09-04
ES8304727A1 (es) 1983-03-01
JPS57196604A (en) 1982-12-02
EP0066403A1 (de) 1982-12-08
HK40187A (en) 1987-05-29
US4481428A (en) 1984-11-06
ATE21180T1 (de) 1986-08-15
NO154509C (no) 1986-10-01
EP0066403B1 (de) 1986-07-30
NO821640L (no) 1982-11-22

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