NO930935D0 - Batteriloes baerbar frekvensdeler samt merkebrikke og deteksjonsanlegg som omfatter saadan frekvensdeler - Google Patents

Batteriloes baerbar frekvensdeler samt merkebrikke og deteksjonsanlegg som omfatter saadan frekvensdeler

Info

Publication number
NO930935D0
NO930935D0 NO930935A NO930935A NO930935D0 NO 930935 D0 NO930935 D0 NO 930935D0 NO 930935 A NO930935 A NO 930935A NO 930935 A NO930935 A NO 930935A NO 930935 D0 NO930935 D0 NO 930935D0
Authority
NO
Norway
Prior art keywords
frequency
resonant circuit
frequency parts
resonant
circuit
Prior art date
Application number
NO930935A
Other languages
English (en)
Other versions
NO930935L (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 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
    • G08B13/2405—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 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
    • 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
    • G08B13/2437—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)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Near-Field Transmission Systems (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 true NO930935D0 (no) 1993-03-16
NO930935L 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 (no)
EP (1) EP0561559B1 (no)
JP (1) JP3293936B2 (no)
AT (1) ATE139638T1 (no)
AU (2) AU656259B2 (no)
CA (1) CA2091728C (no)
DE (1) DE69303204T2 (no)
NO (1) NO930935L (no)

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 (en) * 1992-03-18 1993-09-22 Security Tag Systems, Inc. Frequency divider with variable capacitance
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
EP0650216B1 (en) * 1993-10-26 2000-01-19 Texas Instruments Deutschland Gmbh Antenna circuit
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
US5065138A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled two-resonant-circuit, frequency divider for presence-detection-system tag
ATE152848T1 (de) * 1990-08-03 1997-05-15 Sensormatic Electronics Corp Magnetischgekoppelte, zweiresonanz-schaltung, frequenz-teilungsetikett
US5065137A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled, two-resonant-circuit, frequency-division tag

Also Published As

Publication number Publication date
JP3293936B2 (ja) 2002-06-17
NO930935L (no) 1993-09-20
EP0561559B1 (en) 1996-06-19
JPH0643256A (ja) 1994-02-18
DE69303204D1 (de) 1996-07-25
AU656259B2 (en) 1995-01-27
CA2091728A1 (en) 1993-09-19
DE69303204T2 (de) 1997-02-20
ATE139638T1 (de) 1996-07-15
US5241298A (en) 1993-08-31
CA2091728C (en) 2001-04-03
EP0561559A1 (en) 1993-09-22
AU3521893A (en) 1993-09-23
AU671932B2 (en) 1996-09-12
AU7881794A (en) 1995-02-02

Similar Documents

Publication Publication Date Title
NO930935D0 (no) Batteriloes baerbar frekvensdeler samt merkebrikke og deteksjonsanlegg som omfatter saadan frekvensdeler
EP0066403B1 (en) Batteryless, portable, frequency divider
US6922324B1 (en) Remote powering of electrostatic chucks
KR920701919A (ko) 근접 검출장치
CA2064001A1 (en) Activatable/deactivatable security tag for use with an electronic security system
DE69721335D1 (de) Datenaustauschvorrichtung mit kontakt- und kontaktloser betriebsart
GB2197107B (en) Data-storing devices
SE9501859D0 (sv) Antennanordning för en trådlös kommunikationsenhet
FR2640830B1 (fr) Dispositif pour l'echange d'informations a distance entre un objet portatif et une station
DE69104690T2 (de) Elektromagnetische Wellen nutzendes Datenaustauschsystem.
GR3025574T3 (en) Device for telecommunications by electromagnetic waves
EP0307911B1 (en) Signal discriminator
AU8132591A (en) Magnetically-coupled, two-resonant-circuit, frequency-division tag
DE69125157T2 (de) Schaltungsanordnung zur Antennenankopplung
TW351876B (en) Secondary side circuit device for a transmission and receiving system
MXPA96001858A (en) Transmitter-receiver that divides the frequency of an active signal
JPH0454482A (ja) 識別装置