WO2003025832A1 - Modulateur pour signaux electromagnetiques emis par un systeme d'emission/reception sans contact - Google Patents
Modulateur pour signaux electromagnetiques emis par un systeme d'emission/reception sans contact Download PDFInfo
- Publication number
- WO2003025832A1 WO2003025832A1 PCT/FR2002/003130 FR0203130W WO03025832A1 WO 2003025832 A1 WO2003025832 A1 WO 2003025832A1 FR 0203130 W FR0203130 W FR 0203130W WO 03025832 A1 WO03025832 A1 WO 03025832A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- cut
- data transmission
- carrier frequency
- during
- 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
- 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
Definitions
- a first solution consists in using an antenna with reduced overvoltage coefficient and having a damping compatible with the requirements of standard A, but to the detriment of performance in standard B.
- FIG. 1 represents the envelope of the field emitted according to protocol A, obtained by cutting the frequency of the carrier wave
- FIG. 2 represents the envelope of the field emitted according to the invention
- FIG. 3 represents the amplitude curve of the field radiated by the antenna with respect to the frequency of the received signal
- FIG. 4 is a schematic block diagram of the functions of the device according to the invention.
- the data is transmitted from the reader to the smart card by RF signals according to two types of protocol A and B for data transmission subject to the standard in force today.
- the type A protocol modulates the electromagnetic carrier wave emitted by the reader at 100% of its amplitude.
- the amplitude of the periodic carrier wave is maximum and constant during a first time interval and then zero during a second time interval.
- the type B protocol modulates the electromagnetic carrier wave emitted by the reader at 10% of its amplitude.
- the amplitude of the periodic carrier wave is maximum and constant during a first time interval and then equal to 10% of its maximum amplitude during a second time interval.
- the frequency of the electromagnetic carrier wave is today standard 13.56 MHz and that is why this value is chosen as the reference value in this document. However, the frequency of the electromagnetic carrier wave could be different without departing from the scope of the invention.
- the envelope of the field radiated then by the antenna of the reader is represented in FIG. 1.
- the frequency of the carrier wave is equal to 13.56 MHz
- the radiated field 10 is maximum.
- the frequency of the carrier wave is again equal to 13.56 MHz and the amplitude of the radiated field increases along curve 14 until it reaches its maximum 10. In this way the modulation obtained from the amplitude of l the carrier wave is not satisfactory when it is a modulation at 100% of the maximum amplitude.
Landscapes
- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Transmitters (AREA)
- Selective Calling Equipment (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL15588302A IL155883A0 (en) | 2001-09-14 | 2002-09-13 | Modulator for electromagnetic signals transmitted by a contactless transmission/reception system |
JP2003529385A JP4203923B2 (ja) | 2001-09-14 | 2002-09-13 | 非接触型トランシーバシステムにおける伝送装置 |
BR0205984-3A BR0205984A (pt) | 2001-09-14 | 2002-09-13 | Dispositivo de emissão de dados por radiação de ondas eletromagnéticas em um sistema de emissão/recepção sem contato |
MXPA03004196A MXPA03004196A (es) | 2001-09-14 | 2002-09-13 | Modulador para senales electromagneticas transmitidas mediante un sistema de transmision/recepcion sin contaco. |
CA2429331A CA2429331C (fr) | 2001-09-14 | 2002-09-13 | Modulateur pour signaux electromagnetiques emis par un systeme d'emission/reception sans contact |
DE60231818T DE60231818D1 (de) | 2001-09-14 | 2002-09-13 | Modulator für elektromagnetische signale ausgesandt von einem kontaktlosen sender/empfänger-system |
KR1020037006556A KR100961672B1 (ko) | 2001-09-14 | 2002-09-13 | 비접촉 송/수신 시스템에 의해 전송되는 전자기 신호를 위한 모듈레이터 장치 |
AU2002339053A AU2002339053B2 (en) | 2001-09-14 | 2002-09-13 | Modulator for electromagnetic signals transmitted by a contactless transmission/reception system |
EP02777435A EP1435062B1 (fr) | 2001-09-14 | 2002-09-13 | Modulateur pour signaux electromagnetiques emis par un systeme d'emission/reception sans contact |
US10/416,180 US7177361B2 (en) | 2001-09-14 | 2002-09-13 | Modulator for electromagnetic signals transmitted by a contactless transmission/reception system |
IL155883A IL155883A (en) | 2001-09-14 | 2003-05-13 | A modulator for electromagnetic signals transmitted by a non-contact receiving / transmitting system |
HK04107142A HK1064482A1 (en) | 2001-09-14 | 2004-09-17 | Modulator for electromagnetic signals transmitted by a contactless transmission/reception system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0111917A FR2829853B1 (fr) | 2001-09-14 | 2001-09-14 | Modulateur pour signaux electromagnetiques emis par un systeme d'emission/reception sans contact |
FR0111917 | 2001-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003025832A1 true WO2003025832A1 (fr) | 2003-03-27 |
Family
ID=8867292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/003130 WO2003025832A1 (fr) | 2001-09-14 | 2002-09-13 | Modulateur pour signaux electromagnetiques emis par un systeme d'emission/reception sans contact |
Country Status (18)
Country | Link |
---|---|
US (1) | US7177361B2 (fr) |
EP (1) | EP1435062B1 (fr) |
JP (1) | JP4203923B2 (fr) |
KR (1) | KR100961672B1 (fr) |
CN (1) | CN1273921C (fr) |
AT (1) | ATE427533T1 (fr) |
AU (1) | AU2002339053B2 (fr) |
BR (1) | BR0205984A (fr) |
CA (1) | CA2429331C (fr) |
DE (1) | DE60231818D1 (fr) |
FR (1) | FR2829853B1 (fr) |
HK (1) | HK1064482A1 (fr) |
IL (2) | IL155883A0 (fr) |
MX (1) | MXPA03004196A (fr) |
RU (1) | RU2299468C2 (fr) |
TW (1) | TW583590B (fr) |
WO (1) | WO2003025832A1 (fr) |
ZA (1) | ZA200303027B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1562133A2 (fr) * | 2004-02-03 | 2005-08-10 | Kabushiki Kaisha Toshiba | Dispositif de communication sans fil |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008103870A1 (fr) | 2007-02-23 | 2008-08-28 | Newpage Wisconsin System Inc. | Étiquette d'identification en papier multifonctionnelle |
FR2974962B1 (fr) * | 2011-05-02 | 2013-10-18 | Ask Sa | Procede et dispositif de modulation en amplitude d'un signal electromagnetique emis par un systeme d'emission/reception sans contact |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5712630A (en) * | 1994-07-26 | 1998-01-27 | Matsushita Electric Works. Ltd. | High power moving object identification system |
WO2000046917A1 (fr) * | 1999-02-08 | 2000-08-10 | Motorola Inc. | Amplificateur de puissance et emetteur pour puissance d'emission hf reglable |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5451958A (en) * | 1993-05-21 | 1995-09-19 | Texas Instruments Deutschland Gmbh | Dual standard RF-ID system |
FR2811109B1 (fr) | 2000-06-29 | 2002-12-27 | A S K | Objet portable sans contact comportant un ou plusieurs dispositifs peripheriques sans contact |
FR2811108B1 (fr) | 2000-06-29 | 2002-09-27 | A S K | Dispositif peripherique d'affichage sans contact pour objet portable sans contact |
-
2001
- 2001-09-14 FR FR0111917A patent/FR2829853B1/fr not_active Expired - Fee Related
-
2002
- 2002-09-11 TW TW091120710A patent/TW583590B/zh not_active IP Right Cessation
- 2002-09-13 EP EP02777435A patent/EP1435062B1/fr not_active Expired - Lifetime
- 2002-09-13 RU RU2003118157/09A patent/RU2299468C2/ru not_active IP Right Cessation
- 2002-09-13 DE DE60231818T patent/DE60231818D1/de not_active Expired - Lifetime
- 2002-09-13 US US10/416,180 patent/US7177361B2/en active Active
- 2002-09-13 CN CNB028031288A patent/CN1273921C/zh not_active Expired - Fee Related
- 2002-09-13 BR BR0205984-3A patent/BR0205984A/pt not_active IP Right Cessation
- 2002-09-13 AT AT02777435T patent/ATE427533T1/de not_active IP Right Cessation
- 2002-09-13 KR KR1020037006556A patent/KR100961672B1/ko not_active IP Right Cessation
- 2002-09-13 WO PCT/FR2002/003130 patent/WO2003025832A1/fr active Application Filing
- 2002-09-13 AU AU2002339053A patent/AU2002339053B2/en not_active Ceased
- 2002-09-13 JP JP2003529385A patent/JP4203923B2/ja not_active Expired - Fee Related
- 2002-09-13 MX MXPA03004196A patent/MXPA03004196A/es active IP Right Grant
- 2002-09-13 CA CA2429331A patent/CA2429331C/fr not_active Expired - Fee Related
- 2002-09-13 IL IL15588302A patent/IL155883A0/xx active IP Right Grant
-
2003
- 2003-04-17 ZA ZA200303027A patent/ZA200303027B/en unknown
- 2003-05-13 IL IL155883A patent/IL155883A/en not_active IP Right Cessation
-
2004
- 2004-09-17 HK HK04107142A patent/HK1064482A1/xx not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5712630A (en) * | 1994-07-26 | 1998-01-27 | Matsushita Electric Works. Ltd. | High power moving object identification system |
WO2000046917A1 (fr) * | 1999-02-08 | 2000-08-10 | Motorola Inc. | Amplificateur de puissance et emetteur pour puissance d'emission hf reglable |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1562133A2 (fr) * | 2004-02-03 | 2005-08-10 | Kabushiki Kaisha Toshiba | Dispositif de communication sans fil |
US7515925B2 (en) | 2004-02-03 | 2009-04-07 | Kabushiki Kaisha Toshiba | Wireless communication device for periodically controlling a carrier wave to establish a good communication state with a communication object |
EP1562133A3 (fr) * | 2004-02-03 | 2009-11-04 | Kabushiki Kaisha Toshiba | Dispositif de communication sans fil |
Also Published As
Publication number | Publication date |
---|---|
KR100961672B1 (ko) | 2010-06-09 |
ZA200303027B (en) | 2003-10-28 |
ATE427533T1 (de) | 2009-04-15 |
IL155883A0 (en) | 2003-12-23 |
US7177361B2 (en) | 2007-02-13 |
DE60231818D1 (de) | 2009-05-14 |
CN1483182A (zh) | 2004-03-17 |
BR0205984A (pt) | 2003-10-21 |
AU2002339053B2 (en) | 2008-07-03 |
HK1064482A1 (en) | 2005-01-28 |
CA2429331C (fr) | 2012-08-28 |
CA2429331A1 (fr) | 2003-03-27 |
KR20040034569A (ko) | 2004-04-28 |
JP4203923B2 (ja) | 2009-01-07 |
EP1435062B1 (fr) | 2009-04-01 |
MXPA03004196A (es) | 2004-04-20 |
FR2829853B1 (fr) | 2004-01-02 |
RU2299468C2 (ru) | 2007-05-20 |
US20040051627A1 (en) | 2004-03-18 |
TW583590B (en) | 2004-04-11 |
EP1435062A1 (fr) | 2004-07-07 |
IL155883A (en) | 2008-11-26 |
FR2829853A1 (fr) | 2003-03-21 |
CN1273921C (zh) | 2006-09-06 |
JP2005503704A (ja) | 2005-02-03 |
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