TW376598B - Base station for a contactless interrogation system comprising a phase locked and voltage controlled oscillator - Google Patents
Base station for a contactless interrogation system comprising a phase locked and voltage controlled oscillatorInfo
- Publication number
- TW376598B TW376598B TW086119858A TW86119858A TW376598B TW 376598 B TW376598 B TW 376598B TW 086119858 A TW086119858 A TW 086119858A TW 86119858 A TW86119858 A TW 86119858A TW 376598 B TW376598 B TW 376598B
- Authority
- TW
- Taiwan
- Prior art keywords
- base station
- antenna
- interrogation system
- controlled oscillator
- voltage controlled
- Prior art date
Links
Classifications
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
- Radio Relay Systems (AREA)
- Transmitters (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH24997 | 1997-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW376598B true TW376598B (en) | 1999-12-11 |
Family
ID=4182705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW086119858A TW376598B (en) | 1997-02-05 | 1997-12-27 | Base station for a contactless interrogation system comprising a phase locked and voltage controlled oscillator |
Country Status (6)
Country | Link |
---|---|
US (1) | US6272320B1 (zh) |
JP (1) | JPH10247863A (zh) |
KR (1) | KR19980070651A (zh) |
CA (1) | CA2226644A1 (zh) |
TW (1) | TW376598B (zh) |
ZA (1) | ZA98912B (zh) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2791489B1 (fr) * | 1999-03-25 | 2001-06-08 | Inside Technologies | Procede de modulation de l'amplitude d'un signal d'antenne |
US6650226B1 (en) | 1999-04-07 | 2003-11-18 | Stmicroelectronics S.A. | Detection, by an electromagnetic transponder reader, of the distance separating it from a transponder |
FR2792135B1 (fr) * | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | Fonctionnement en complage tres proche d'un systeme a transpondeur electromagnetique |
FR2792136B1 (fr) | 1999-04-07 | 2001-11-16 | St Microelectronics Sa | Transmission en duplex dans un systeme de transpondeurs electromagnetiques |
FR2792132B1 (fr) | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | Borne de lecture d'un transpondeur electromagnetique fonctionnant en couplage tres proche |
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 |
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 |
FR2808945B1 (fr) | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | Evaluation du nombre de transpondeurs electromagnetiques dans le champ d'un lecteur |
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 |
GB2465037B (en) | 2009-03-20 | 2012-04-04 | Innovision Res & Tech Plc | Near field rf communications apparatus |
FR2947363A1 (fr) * | 2009-06-25 | 2010-12-31 | St Microelectronics Sas | Authentification d'un couple terminal-transpondeur electromagnetique par le transpondeur |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3689885A (en) * | 1970-09-15 | 1972-09-05 | Transitag Corp | Inductively coupled passive responder and interrogator unit having multidimension electromagnetic field capabilities |
DE2408947C3 (de) * | 1974-02-25 | 1979-02-22 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Schaltungsanordnung zur Frequenzerkennung auf dem Gebiet des Verkehrsfunkempfangs |
US4063173A (en) * | 1976-04-01 | 1977-12-13 | Motorola, Inc. | Dual mode receiver |
US4107613A (en) * | 1977-02-11 | 1978-08-15 | Perma-Power Inc. | Wireless microphone with FM receiver muting system responsive to excessive undesired AM level or low AGC control level |
US4207522A (en) * | 1977-04-25 | 1980-06-10 | Housholder Arthur E | Programmable frequency scanning radio system |
US4169260A (en) | 1978-04-11 | 1979-09-25 | Mosler Safe Company | Capacitive intrusion detector circuitry utilizing reference oscillator drift |
US4472820A (en) * | 1981-04-06 | 1984-09-18 | Motorola, Inc. | Program swallow counting device using a single synchronous counter for frequency synthesizing |
US4531526A (en) * | 1981-08-07 | 1985-07-30 | Genest Leonard Joseph | Remote sensor telemetering system |
US4388524A (en) | 1981-09-16 | 1983-06-14 | Walton Charles A | Electronic identification and recognition system with code changeable reactance |
GB8500220D0 (en) * | 1985-01-04 | 1985-02-13 | Coin Controls | Discriminating between metallic articles |
US4724427A (en) * | 1986-07-18 | 1988-02-09 | B. I. Incorporated | Transponder device |
FI83999C (fi) * | 1989-10-26 | 1991-09-25 | Vaisala Oy | Foerfarande och anordning foer maetning av hastigheten av ett objekt genom att utnyttja doppler -foerskjutningen av elektromagnetisk straolning. |
JPH04507049A (ja) | 1990-04-23 | 1992-12-10 | シーメンス アクチエンゲゼルシヤフト | 植え込み可能な医療装置およびそのテレメトリシステム |
GB2244364B (en) * | 1990-05-24 | 1994-03-09 | Coin Controls | Coin discrimination apparatus |
FR2674659A1 (fr) * | 1991-03-29 | 1992-10-02 | Renishan Metrology Ltd | Dispositif de transmission de signaux pour sonde a declenchement. |
US5608758A (en) * | 1992-07-15 | 1997-03-04 | Futaba Denshi Kogyo, K.K. | Radio control device having crystal high frequency module and high frequency phase lockloop for selective use, modules detachably mounted |
US5337039A (en) * | 1992-07-16 | 1994-08-09 | Sdr Metro Inc. | Proximity detection system with digital frequency variation detection means |
US5602540A (en) * | 1993-06-14 | 1997-02-11 | Simmonds Precision Products Inc. | Fluid gauging apparatus with inductive interrogation |
US5491715A (en) * | 1993-06-28 | 1996-02-13 | Texas Instruments Deutschland Gmbh | Automatic antenna tuning method and circuit |
US5541604A (en) * | 1993-09-03 | 1996-07-30 | Texas Instruments Deutschland Gmbh | Transponders, Interrogators, systems and methods for elimination of interrogator synchronization requirement |
JP3444311B2 (ja) * | 1994-07-20 | 2003-09-08 | 株式会社デンソー | 移動体識別装置の応答器 |
US5568512A (en) * | 1994-07-27 | 1996-10-22 | Micron Communications, Inc. | Communication system having transmitter frequency control |
JP3800634B2 (ja) | 1994-12-20 | 2006-07-26 | 松下電工株式会社 | 非接触識別システム |
JP2698766B2 (ja) | 1995-01-11 | 1998-01-19 | ソニーケミカル株式会社 | 非接触式icカードシステム用送受信装置 |
US5825833A (en) * | 1995-01-31 | 1998-10-20 | Mitsumi Electric Co., Ltd. | Digital and analog reception apparatus |
US5898733A (en) * | 1995-06-30 | 1999-04-27 | Philips Electronics North America Corporation | Packet hopping system with sliding frequency, and transciever for the system |
US5777562A (en) * | 1996-08-19 | 1998-07-07 | Hoffman; David J. | Centering device and method for centering |
-
1997
- 1997-12-27 TW TW086119858A patent/TW376598B/zh active
-
1998
- 1998-01-12 US US09/005,838 patent/US6272320B1/en not_active Expired - Lifetime
- 1998-01-12 CA CA002226644A patent/CA2226644A1/en not_active Abandoned
- 1998-01-21 KR KR1019980001632A patent/KR19980070651A/ko not_active Application Discontinuation
- 1998-01-29 JP JP10016887A patent/JPH10247863A/ja active Pending
- 1998-02-04 ZA ZA98912A patent/ZA98912B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
JPH10247863A (ja) | 1998-09-14 |
CA2226644A1 (en) | 1998-08-05 |
US6272320B1 (en) | 2001-08-07 |
KR19980070651A (ko) | 1998-10-26 |
ZA98912B (en) | 1998-08-06 |
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