DE60033882D1 - Ein mit sehr naher Koppelung arbeitendes Lesegerät für elektromagnetische Transponder - Google Patents

Ein mit sehr naher Koppelung arbeitendes Lesegerät für elektromagnetische Transponder

Info

Publication number
DE60033882D1
DE60033882D1 DE60033882T DE60033882T DE60033882D1 DE 60033882 D1 DE60033882 D1 DE 60033882D1 DE 60033882 T DE60033882 T DE 60033882T DE 60033882 T DE60033882 T DE 60033882T DE 60033882 D1 DE60033882 D1 DE 60033882D1
Authority
DE
Germany
Prior art keywords
close coupling
electromagnetic transponders
coupling reader
reader
transponders
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 - Fee Related
Application number
DE60033882T
Other languages
English (en)
Other versions
DE60033882T2 (de
Inventor
Luc Wuidart
Michel Bardouillet
Jean-Pierre Enguent
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.)
STMicroelectronics SA
Original Assignee
STMicroelectronics SA
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 STMicroelectronics SA filed Critical STMicroelectronics SA
Publication of DE60033882D1 publication Critical patent/DE60033882D1/de
Application granted granted Critical
Publication of DE60033882T2 publication Critical patent/DE60033882T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
DE60033882T 1999-04-07 2000-04-06 Lese-Terminal für einen elektromagnetischen Transponder, in Betriebsart mit sehr naher Kopplung Expired - Fee Related DE60033882T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9904544 1999-04-07
FR9904544A FR2792132B1 (fr) 1999-04-07 1999-04-07 Borne de lecture d'un transpondeur electromagnetique fonctionnant en couplage tres proche

Publications (2)

Publication Number Publication Date
DE60033882D1 true DE60033882D1 (de) 2007-04-26
DE60033882T2 DE60033882T2 (de) 2008-01-17

Family

ID=9544289

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60033882T Expired - Fee Related DE60033882T2 (de) 1999-04-07 2000-04-06 Lese-Terminal für einen elektromagnetischen Transponder, in Betriebsart mit sehr naher Kopplung

Country Status (5)

Country Link
US (1) US6650229B1 (de)
EP (1) EP1043677B1 (de)
JP (1) JP3649081B2 (de)
DE (1) DE60033882T2 (de)
FR (1) FR2792132B1 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2796781A1 (fr) 1999-07-20 2001-01-26 St Microelectronics Sa Dimensionnement d'un systeme a transpondeur electromagnetique pour un fonctionnement en hyperproximite
US7049935B1 (en) 1999-07-20 2006-05-23 Stmicroelectronics S.A. Sizing of an electromagnetic transponder system for a dedicated distant coupling operation
FR2804557B1 (fr) * 2000-01-31 2003-06-27 St Microelectronics Sa Adaptation de la puissance d'emission d'un lecteur de transpondeur electromagnetique
FR2808945B1 (fr) * 2000-05-12 2002-08-16 St Microelectronics Sa Evaluation du nombre de transpondeurs electromagnetiques dans le champ d'un lecteur
FR2808946A1 (fr) * 2000-05-12 2001-11-16 St Microelectronics Sa Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur
FR2808941B1 (fr) * 2000-05-12 2002-08-16 St Microelectronics Sa Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur a demodulation d'amplitude
FR2808942B1 (fr) * 2000-05-12 2002-08-16 St Microelectronics Sa Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur a demodulation de phase
FR2809251B1 (fr) * 2000-05-17 2003-08-15 St Microelectronics Sa Dispositif de production d'un champ electromagnetique pour transpondeur
FR2809235A1 (fr) * 2000-05-17 2001-11-23 St Microelectronics Sa Antenne de generation d'un champ electromagnetique pour transpondeur
FR2812986B1 (fr) * 2000-08-09 2002-10-31 St Microelectronics Sa Detection d'une signature electrique d'un transpondeur electromagnetique
US20030169169A1 (en) 2000-08-17 2003-09-11 Luc Wuidart Antenna generating an electromagnetic field for transponder
EP1527410B1 (de) * 2002-07-30 2009-02-18 Nxp B.V. Transponder mit einer steuerbaren einschaltrücksatzschaltung
DE102005044438A1 (de) * 2005-09-16 2007-03-22 Giesecke & Devrient Gmbh Mit einem Transponder betätigbare Schaltvorrichtung
JP2009141729A (ja) * 2007-12-07 2009-06-25 Panasonic Corp 検波用回路装置および携帯機器
JP2009271775A (ja) * 2008-05-08 2009-11-19 Toshiba Corp 受信装置
FR2947074A1 (fr) * 2009-06-19 2010-12-24 St Microelectronics Rousset Evaluation inductive du facteur de couplage d'un transpondeur electromagnetique
FR2947073A1 (fr) * 2009-06-19 2010-12-24 St Microelectronics Rousset Gestion d'energie dans un transpondeur electromagnetique
FR2947075A1 (fr) * 2009-06-19 2010-12-24 St Microelectronics Rousset Evaluation resistive du facteur de couplage d'un transpondeur electromagnetique
FR2947364A1 (fr) * 2009-06-25 2010-12-31 St Microelectronics Sas Authentification d'un couple terminal-transpondeur electromagnetique par le terminal
FR2947362A1 (fr) 2009-06-25 2010-12-31 St Microelectronics Sas Authentification d'un terminal par un transpondeur electromagnetique
FR2947363A1 (fr) * 2009-06-25 2010-12-31 St Microelectronics Sas Authentification d'un couple terminal-transpondeur electromagnetique par le transpondeur
US20110217926A1 (en) * 2010-03-03 2011-09-08 Qualcomm Incorporated Reverse link signaling via impedance modulation
FR2976104B1 (fr) 2011-06-03 2013-11-15 St Microelectronics Rousset Securisation d'une communication entre un transpondeur electromagnetique et un terminal
FR2976105B1 (fr) 2011-06-03 2013-05-17 St Microelectronics Rousset Securisation d'une communication par un transpondeur electromagnetique
FR2976103B1 (fr) 2011-06-03 2013-05-17 St Microelectronics Rousset Aide au positionnement d'un transpondeur
FR2976102B1 (fr) 2011-06-03 2013-05-17 St Microelectronics Rousset Assistance au positionnement d'un transpondeur
FR2994756B1 (fr) * 2012-08-24 2015-08-07 St Microelectronics Rousset Terminal d'un systeme de communication en champ proche
US10695119B2 (en) 2013-09-24 2020-06-30 Covidien Lp Power and bi directional data interface assembly and surgical system including the same
FR3056793A1 (fr) * 2016-09-29 2018-03-30 Stmicroelectronics (Rousset) Sas Procede de detection de la presence eventuelle d'un objet par un lecteur sans contact, et lecteur correspondant
US11502728B2 (en) * 2019-08-20 2022-11-15 Nxp B.V. Near-field wireless device for distance measurement

Family Cites Families (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579414A (en) 1941-10-15 1946-08-02 Standard Telephones Cables Ltd Improvements in or relating to electric wave filters
US5202644A (en) 1959-06-11 1993-04-13 Ail Systems, Inc. Receiver apparatus
US3618089A (en) 1969-01-29 1971-11-02 Moran Instr Corp Range and time measure system
GB1341025A (en) 1970-11-17 1973-12-19 English Electric Co Ltd Data transmission over mains supplies
US4068232A (en) 1976-02-12 1978-01-10 Fairchild Industries, Inc. Passive encoding microwave transponder
JPS53120295A (en) * 1977-03-30 1978-10-20 Toshiba Corp Subject discrimination device
DK362277A (da) 1977-08-15 1979-02-16 Medibit A S Elektronisk informationssystem
DK146108C (da) 1978-11-13 1983-11-21 Medibit A S Fremgangsmaade til overfoering af information samt anlaeg til udoevelse af fremgangsmaaden
US4278977A (en) 1979-05-04 1981-07-14 Rca Corporation Range determining system
ATE14055T1 (de) 1980-04-28 1985-07-15 Paul Rouet Verfahren und anlage zur nachrichten- und steueruebertragung auf ein versorgungsnetz fuer wechselstrom.
US4928108A (en) 1983-12-20 1990-05-22 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry for split passband matching
US4593412A (en) 1984-05-21 1986-06-03 Multi-Elmac Company Integrated oscillator antenna for low power, low harmonic radiation
US4706050A (en) 1984-09-22 1987-11-10 Smiths Industries Public Limited Company Microstrip devices
US4656472A (en) 1985-01-23 1987-04-07 Walton Charles A Proximity identification system with power aided identifier
JPS61196603A (ja) 1985-02-26 1986-08-30 Mitsubishi Electric Corp アンテナ
US4660192A (en) 1985-04-11 1987-04-21 Pomatto Sr Robert P Simultaneous AM and FM transmitter and receiver
DE3707173A1 (de) 1986-03-07 1987-09-10 Iskra Sozd Elektro Indus Schaltungsanordnung einer lesevorrichtung fuer elektromagnetische identifikationskarten
GB2197107B (en) 1986-11-03 1990-12-12 Mars Inc Data-storing devices
IL82025A (en) 1987-03-27 1993-07-08 Galil Electro Ltd Electronic data communications system
US4802080A (en) 1988-03-18 1989-01-31 American Telephone And Telegraph Company, At&T Information Systems Power transfer circuit including a sympathetic resonator
US5701121A (en) * 1988-04-11 1997-12-23 Uniscan Ltd. Transducer and interrogator device
JP2612190B2 (ja) 1988-08-31 1997-05-21 山武ハネウエル株式会社 応答装置と質問装置からなる全二重通信装置
US5055853A (en) 1988-10-03 1991-10-08 Garnier Robert C Magnetic frill generator
EP0369622A3 (de) 1988-11-09 1991-04-17 Security Tag Systems, Inc. Nahlesen eines kodierten Etiketts
US5305008A (en) 1991-08-12 1994-04-19 Integrated Silicon Design Pty. Ltd. Transponder system
US5099227A (en) 1989-07-18 1992-03-24 Indala Corporation Proximity detecting apparatus
US5126749A (en) 1989-08-25 1992-06-30 Kaltner George W Individually fed multiloop antennas for electronic security systems
US5142292A (en) 1991-08-05 1992-08-25 Checkpoint Systems, Inc. Coplanar multiple loop antenna for electronic article surveillance systems
US5214409A (en) 1991-12-03 1993-05-25 Avid Corporation Multi-memory electronic identification tag
EP0628223B1 (de) 1992-02-29 1997-02-05 Scantronic Limited Stromversorgung, insbesondere für alarmsystem
SE469959B (sv) 1992-03-06 1993-10-11 Electrolux Ab Anordning för överföring av styrkommandon i en med växelström driven apparat eller maskin
JP3288478B2 (ja) * 1992-04-29 2002-06-04 テキサス インスツルメンツ インコーポレイテツド 環境条件を遠隔感知する識別システム
US5452344A (en) 1992-05-29 1995-09-19 Datran Systems Corporation Communication over power lines
NL9201270A (nl) 1992-07-15 1994-02-01 Nedap Nv Antiwinkeldiefstal-antenne met draaiveld.
JP2747395B2 (ja) 1992-07-20 1998-05-06 三菱電機株式会社 非接触ｉｃカード、非接触ｉｃカードリーダライタ及びデータ伝送方法
US5850416A (en) 1993-06-30 1998-12-15 Lucent Technologies, Inc. Wireless transmitter-receiver information device
US5324315A (en) 1993-08-12 1994-06-28 Medtronic, Inc. Closed-loop downlink telemetry and method for implantable medical device
US5541604A (en) * 1993-09-03 1996-07-30 Texas Instruments Deutschland Gmbh Transponders, Interrogators, systems and methods for elimination of interrogator synchronization requirement
NL9301650A (nl) 1993-09-24 1995-04-18 Nedap Nv Onafhankelijk antennestelsel voor detectiesystemen.
JPH085731A (ja) 1993-10-04 1996-01-12 Texas Instr Deutschland Gmbh Ｒｆ−ｉｄトランスポンダの位置の決定
US5521602A (en) 1994-02-10 1996-05-28 Racom Systems, Inc. Communications system utilizing FSK/PSK modulation techniques
US5504485A (en) 1994-07-21 1996-04-02 Amtech Corporation System for preventing reading of undesired RF signals
US5550536A (en) * 1994-08-17 1996-08-27 Texas Instruments Deutschland Gmbh Circuit frequency following technique transponder resonant
FR2724477B1 (fr) 1994-09-13 1997-01-10 Gemplus Card Int Procede de fabrication de cartes sans contact
JPH0962816A (ja) 1994-10-06 1997-03-07 Mitsubishi Electric Corp 非接触ｉｃカードおよびこれを含む非接触ｉｃカードシステム
JPH08123919A (ja) 1994-10-28 1996-05-17 Mitsubishi Electric Corp 非接触ｉｃカードシステムおよびその通信方法
JPH08191259A (ja) * 1995-01-11 1996-07-23 Sony Chem Corp 非接触式ｉｃカードシステム用送受信装置
GB9503352D0 (en) 1995-02-21 1995-04-12 Sinnett Glyn Remote control system
US5604411A (en) 1995-03-31 1997-02-18 Philips Electronics North America Corporation Electronic ballast having a triac dimming filter with preconditioner offset control
US5691605A (en) 1995-03-31 1997-11-25 Philips Electronics North America Electronic ballast with interface circuitry for multiple dimming inputs
JPH095430A (ja) 1995-06-22 1997-01-10 Fujitsu Ten Ltd トランスポンダ用アンテナ駆動装置
US6243013B1 (en) 1999-01-08 2001-06-05 Intermec Ip Corp. Cascaded DC voltages of multiple antenna RF tag front-end circuits
JPH0981701A (ja) 1995-09-19 1997-03-28 Toshiba Corp 非接触式情報記録媒体および非接触式情報伝送方法
JPH09218263A (ja) 1995-10-11 1997-08-19 Texas Instr Inc <Ti> トランスポンダ・システム及びその動作方法
DE19541855C1 (de) 1995-11-09 1997-02-20 Siemens Ag Diebstahlschutzsystem für ein Kraftfahrzeug
NL1001761C2 (nl) * 1995-11-28 1997-05-30 Ronald Barend Van Santbrink Stelsel voor contactloze data-uitwisseling tussen een lees- en schrijf- eenheid en één of meer informatiedragers.
DE19546928A1 (de) 1995-12-15 1997-06-19 Diehl Ident Gmbh Einrichtung zur hochfrequenten Übermittlung einer Information
SE506449C2 (sv) 1996-02-12 1997-12-15 Rso Corp Artikelövervakningssystem
FR2746200B1 (fr) 1996-03-12 1998-05-29 Dispositif d'echange d'informations sans contact avec une etiquette electronique
DE19621076C2 (de) 1996-05-24 2001-06-28 Siemens Ag Vorrichtung und Verfahren zum kontaktlosen Übertragen von Energie oder Daten
AUPO055296A0 (en) * 1996-06-19 1996-07-11 Integrated Silicon Design Pty Ltd Enhanced range transponder system
DE19632282A1 (de) 1996-08-09 1998-02-19 Holzer Walter Prof Dr H C Ing Verfahren und Einrichtung zur Helligkeitssteuerung von Leuchtstofflampen
JPH10145267A (ja) 1996-09-13 1998-05-29 Hitachi Ltd 高効率アンテナコイル並びに無線カードおよび無線カードを用いた情報通信システム
JP3890510B2 (ja) 1996-09-13 2007-03-07 アトメル ジャーマニー ゲゼルシヤフト ミット ベシュレンクテル ハフツング 無線周波数識別システムにおける暗号学的な認証を行なう方法
US6446049B1 (en) 1996-10-25 2002-09-03 Pole/Zero Corporation Method and apparatus for transmitting a digital information signal and vending system incorporating same
WO1998020363A1 (en) 1996-11-05 1998-05-14 Philips Electronics N.V. Contactless data transmission and receiving device with a synchronous demodulator
FR2757952B1 (fr) 1996-12-27 1999-03-19 Gemplus Card Int Transpondeur radioelectrique muni d'une antenne et d'un circuit de desaccord en frequence
JPH10203066A (ja) 1997-01-28 1998-08-04 Hitachi Ltd 非接触ｉｃカード
GB2321726A (en) * 1997-01-30 1998-08-05 Motorola Inc Apparatus and method for regulating power on a contactless portable data carrier
TW376598B (en) 1997-02-05 1999-12-11 Em Microelectronic Marin Sa Base station for a contactless interrogation system comprising a phase locked and voltage controlled oscillator
DE69717782T2 (de) 1997-02-05 2003-09-18 Em Microelectronic Marin Sa Basisstation eines Fernabfragesystems mit spannungsgesteuertem und phasengeregeltem Oszillator
US5883582A (en) * 1997-02-07 1999-03-16 Checkpoint Systems, Inc. Anticollision protocol for reading multiple RFID tags
US6208235B1 (en) 1997-03-24 2001-03-27 Checkpoint Systems, Inc. Apparatus for magnetically decoupling an RFID tag
JP3427668B2 (ja) 1997-04-01 2003-07-22 株式会社村田製作所 アンテナ装置
JPH1131913A (ja) 1997-05-15 1999-02-02 Murata Mfg Co Ltd チップアンテナ及びそれを用いた移動体通信機
US6025780A (en) 1997-07-25 2000-02-15 Checkpoint Systems, Inc. RFID tags which are virtually activated and/or deactivated and apparatus and methods of using same in an electronic security system
JPH1166248A (ja) 1997-08-12 1999-03-09 Mitsubishi Electric Corp 非接触型ｉｃカード
US5986570A (en) 1997-09-03 1999-11-16 Micron Communications, Inc. Method for resolving signal collisions between multiple RFID transponders in a field
JPH11177027A (ja) 1997-09-15 1999-07-02 Microchip Technol Inc 集積回路半導体チップ及び誘導性コイルを含む片面パッケージ並びにその製造方法
US6393045B1 (en) 1997-09-26 2002-05-21 Wherenet Corp. Spread spectrum baseband modulation of magnetic fields for communications and proximity sensing
GB9727042D0 (en) 1997-12-22 1998-02-18 Advanced Technology Communicat Tag and detection system
US6100788A (en) 1997-12-29 2000-08-08 Storage Technology Corporation Multifunctional electromagnetic transponder device and method for performing same
US6281794B1 (en) 1998-01-02 2001-08-28 Intermec Ip Corp. Radio frequency transponder with improved read distance
CA2287441A1 (en) 1998-02-19 1999-08-26 Stephen Leigh Kuffner Data communications terminal and method of adjusting a power signal generated therefrom
TW386617U (en) 1998-02-23 2000-04-01 Kye Systems Corp High frequency wireless pointer apparatus
FR2781587B1 (fr) 1998-07-21 2000-09-08 Dassault Electronique Lecteur perfectionne pour badges sans contact
US5955950A (en) * 1998-07-24 1999-09-21 Checkpoint Systems, Inc. Low noise signal generator for use with an RFID system
US6072383A (en) 1998-11-04 2000-06-06 Checkpoint Systems, Inc. RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment
US6424820B1 (en) 1999-04-02 2002-07-23 Interval Research Corporation Inductively coupled wireless system and method
US6307468B1 (en) 1999-07-20 2001-10-23 Avid Identification Systems, Inc. Impedance matching network and multidimensional electromagnetic field coil for a transponder interrogator
US6307517B1 (en) 2000-06-13 2001-10-23 Applied Wireless Identifications Group, Inc. Metal compensated radio frequency identification reader
US6229443B1 (en) 2000-06-23 2001-05-08 Single Chip Systems Apparatus and method for detuning of RFID tag to regulate voltage

Also Published As

Publication number Publication date
US6650229B1 (en) 2003-11-18
EP1043677B1 (de) 2007-03-14
JP3649081B2 (ja) 2005-05-18
FR2792132B1 (fr) 2001-11-02
FR2792132A1 (fr) 2000-10-13
JP2000332648A (ja) 2000-11-30
EP1043677A1 (de) 2000-10-11
DE60033882T2 (de) 2008-01-17

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