NO930935L - Batteriloes baerbar frekvensdeler samt merkebrikke og paavisningsanlegg med saadan frekvensdeler - Google Patents

Batteriloes baerbar frekvensdeler samt merkebrikke og paavisningsanlegg med saadan frekvensdeler

Info

Publication number
NO930935L
NO930935L NO93930935A NO930935A NO930935L NO 930935 L NO930935 L NO 930935L NO 93930935 A NO93930935 A NO 93930935A NO 930935 A NO930935 A NO 930935A NO 930935 L NO930935 L NO 930935L
Authority
NO
Norway
Prior art keywords
frequency
resonant circuit
resonant
circuit
electromagnetic radiation
Prior art date
Application number
NO93930935A
Other languages
English (en)
Norwegian (no)
Other versions
NO930935D0 (no
Inventor
Ming Ren Lian
Fred Wade Herman
Original Assignee
Security Tag Systems 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 Security Tag Systems Inc filed Critical Security Tag Systems Inc
Publication of NO930935D0 publication Critical patent/NO930935D0/no
Publication of NO930935L publication Critical patent/NO930935L/no

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
    • G08B13/2405—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 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
    • 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
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
  • Filters And Equalizers (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Near-Field Transmission Systems (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Battery Mounting, Suspending (AREA)
NO93930935A 1992-03-18 1993-03-16 Batteriloes baerbar frekvensdeler samt merkebrikke og paavisningsanlegg med saadan frekvensdeler NO930935L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/853,533 US5241298A (en) 1992-03-18 1992-03-18 Electrically-and-magnetically-coupled, batteryless, portable, frequency divider

Publications (2)

Publication Number Publication Date
NO930935D0 NO930935D0 (no) 1993-03-16
NO930935L true NO930935L (no) 1993-09-20

Family

ID=25316289

Family Applications (1)

Application Number Title Priority Date Filing Date
NO93930935A NO930935L (no) 1992-03-18 1993-03-16 Batteriloes baerbar frekvensdeler samt merkebrikke og paavisningsanlegg med saadan frekvensdeler

Country Status (8)

Country Link
US (1) US5241298A (de)
EP (1) EP0561559B1 (de)
JP (1) JP3293936B2 (de)
AT (1) ATE139638T1 (de)
AU (2) AU656259B2 (de)
CA (1) CA2091728C (de)
DE (1) DE69303204T2 (de)
NO (1) NO930935L (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5231265A (en) * 1990-09-28 1993-07-27 Balance Dynamics Corporation Method and apparatus for the transfer of electrical power to a balancer
EP0561560A1 (de) * 1992-03-18 1993-09-22 Security Tag Systems, Inc. Frequenzteiler mit variabler Kapazität
US5317330A (en) * 1992-10-07 1994-05-31 Westinghouse Electric Corp. Dual resonant antenna circuit for RF tags
US5604485A (en) * 1993-04-21 1997-02-18 Motorola Inc. RF identification tag configurations and assemblies
DE69422682T2 (de) * 1993-10-26 2000-08-10 Texas Instruments Deutschland Gmbh Antennenschaltung
SE508322C2 (sv) * 1994-02-07 1998-09-28 Leif Aasbrink Larmelement
US5446447A (en) * 1994-02-16 1995-08-29 Motorola, Inc. RF tagging system including RF tags with variable frequency resonant circuits
US5661470A (en) * 1994-03-04 1997-08-26 Karr; Gerald S. Object recognition system
IT1271382B (it) * 1994-05-31 1997-05-27 Alessandro Manneschi Rivelatore di metalli per controllo accessi combinato in forma integrata con rivelatore a trasponder
JP3468436B2 (ja) * 1994-09-22 2003-11-17 豊田紡織株式会社 樹脂製エアクリーナ
US5517179A (en) * 1995-05-18 1996-05-14 Xlink Enterprises, Inc. Signal-powered frequency-dividing transponder
US6208235B1 (en) 1997-03-24 2001-03-27 Checkpoint Systems, Inc. Apparatus for magnetically decoupling an RFID tag
ITTO980146A1 (it) * 1998-02-25 1999-08-25 Alessandro Manneschi Sistema rivelatore per controllo di accesso e relativo gruppo rivela- tore.
GB9815120D0 (en) * 1998-07-14 1998-09-09 Clan Holdings Ltd Battery-less transponder circuit
US6072383A (en) * 1998-11-04 2000-06-06 Checkpoint Systems, Inc. RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment
US7155973B2 (en) * 2003-07-08 2007-01-02 Stephen William Dyer Method and apparatus for balancing
US6400271B1 (en) * 2000-03-20 2002-06-04 Checkpoint Systems, Inc. Activate/deactiveable security tag with enhanced electronic protection for use with an electronic security system
BR0110648A (pt) * 2000-05-08 2003-04-01 Checkpoint Systems Inc Sistema de detecção e identificação de radiofrequência
GB0921872D0 (en) * 2009-12-15 2010-01-27 Isis Innovation Asset detection apparatus and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906245A (en) * 1973-01-22 1975-09-16 Michael T Shen Graded junction varactor frequency divider circuits employing large division factors
US4314373A (en) * 1976-05-24 1982-02-02 Harris Corporation Passive transmitter including parametric device
GB1599120A (en) * 1978-05-19 1981-09-30 Philips Electronic Associated Detection system
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
NL8200138A (nl) * 1982-01-14 1983-08-01 Nedap Nv Detectiestelsel.
US4670740A (en) * 1985-11-04 1987-06-02 Security Tag Systems, Inc. Portable, batteryless, frequency divider consisting of inductor and diode
US5065137A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled, two-resonant-circuit, frequency-division tag
ES2100934T3 (es) * 1990-08-03 1997-07-01 Sensormatic Electronics Corp Etiqueta de division de frecuencia teniendo un circuito biresonante acoplado magneticamente.
US5065138A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled two-resonant-circuit, frequency divider for presence-detection-system tag

Also Published As

Publication number Publication date
DE69303204T2 (de) 1997-02-20
US5241298A (en) 1993-08-31
JP3293936B2 (ja) 2002-06-17
AU671932B2 (en) 1996-09-12
AU7881794A (en) 1995-02-02
CA2091728A1 (en) 1993-09-19
DE69303204D1 (de) 1996-07-25
CA2091728C (en) 2001-04-03
NO930935D0 (no) 1993-03-16
AU656259B2 (en) 1995-01-27
ATE139638T1 (de) 1996-07-15
JPH0643256A (ja) 1994-02-18
EP0561559B1 (de) 1996-06-19
AU3521893A (en) 1993-09-23
EP0561559A1 (de) 1993-09-22

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