JP2007074153A - リーダ・ライタ及び通信方法 - Google Patents
リーダ・ライタ及び通信方法 Download PDFInfo
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- JP2007074153A JP2007074153A JP2005256969A JP2005256969A JP2007074153A JP 2007074153 A JP2007074153 A JP 2007074153A JP 2005256969 A JP2005256969 A JP 2005256969A JP 2005256969 A JP2005256969 A JP 2005256969A JP 2007074153 A JP2007074153 A JP 2007074153A
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- 230000006854 communication Effects 0.000 title claims abstract description 63
- 238000004891 communication Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 16
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 38
- 230000008859 change Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 17
- 230000004044 response Effects 0.000 description 16
- 239000002184 metal Substances 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
-
- 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
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
- G06K7/10178—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
-
- 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
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
-
- 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
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10326—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the very-near field type, e.g. capacitive
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
【解決手段】 所定の周波数の搬送波を出力させて、近接した無線通信端末と近距離無線通信を行うリーダ・ライタにおいて、搬送波を送信し、無線通信端末から送信される所定状態に変調された信号と搬送波との合成波を受信して、受信した合成波に含まれる変調成分の検出が困難であることを判定した場合に、搬送波を弱めるように作用させる。
【選択図】 図1
Description
F3(x)=Asin(ωx+π)=−Asin(ωx)=−F1(x)となる。従って、F1(x)+F2(x)+F3(x)=F1(x)+F2(x)−F1(x)=F2(x)となり、搬送波F1(x)と応答波F2(x)の位相ずれにより埋もれていた応答波F2(x)を、リーダ・ライタ10側で抽出できるようになる。
Claims (6)
- 所定の周波数の搬送波を出力させて、近接した無線通信端末と近距離無線通信を行うリーダ・ライタにおいて、
前記搬送波を送信し、前記無線通信端末から送信される所定状態に変調された信号と前記搬送波との合成波を受信するアンテナと、
前記無線通信端末が近接した状態で、前記アンテナで受信した合成波に含まれる変調成分の検出が困難であることを判定する判定部と、
前記判定部で、変調成分の検出が困難であることを判定した場合に、前記搬送波を弱めるように作用させる処理を行う搬送波制御部とを備えたことを特徴とする
リーダ・ライタ。 - 請求項1記載のリーダ・ライタにおいて、
前記搬送波制御部は、前記搬送波を打ち消すように作用する信号を、前記アンテナの近傍に設置した補助アンテナから無線送信させることを特徴とする
リーダ・ライタ。 - 請求項1記載のリーダ・ライタにおいて、
前記搬送波制御部は、前記アンテナが受信した合成波に、その合成波に含まれる搬送波成分を弱める信号を混合することを特徴とする
リーダ・ライタ。 - 請求項1記載のリーダ・ライタにおいて、
前記搬送波制御部は、前記アンテナが送信する搬送波の出力レベルを低下させることを特徴とする
リーダ・ライタ。 - 請求項1記載のリーダ・ライタにおいて、
前記アンテナが受信する合成波は、前記無線通信端末で振幅変調された信号を含む合成波であり、
前記判定部での、変調成分の検出が困難であることの判定は、前記合成波の振幅変化が判別不能な状態の判定であることを特徴とする
リーダ・ライタ。 - 所定の周波数の搬送波を出力させて、近接した無線通信端末との間で近距離無線通信を行い、前記無線通信端末との間でデータの双方向の伝送を行う通信方法において、
前記搬送波を送信し、前記無線通信端末から送信される所定状態に変調された信号と前記搬送波との合成波を受信する送受信処理と、
前記無線通信端末が近接した状態で、前記送受信処理で受信した合成波に含まれる変調成分の検出が困難であることを判定処理と、
前記判定処理で、変調成分の検出が困難であることを判定した場合に、前記搬送波を弱めるように作用させる搬送波制御処理とを行うことを特徴とする
通信方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005256969A JP4584082B2 (ja) | 2005-09-05 | 2005-09-05 | リーダ・ライタ及び通信方法 |
US11/510,694 US7487921B2 (en) | 2005-09-05 | 2006-08-28 | Reader/writer and communication method thereof |
KR1020060083521A KR20070026196A (ko) | 2005-09-05 | 2006-08-31 | 리더·라이터 및 리더·라이터의 통신 방법 |
EP06018463A EP1760629B1 (en) | 2005-09-05 | 2006-09-04 | Reader/writer and communication method thereof |
DE602006017939T DE602006017939D1 (de) | 2005-09-05 | 2006-09-04 | Lese-/Schreibgerät und Kommunikationsverfahren dafür |
EP10177544A EP2284763B1 (en) | 2005-09-05 | 2006-09-04 | Reader/writer and communication method thereof |
CN2006101285808A CN1928885B (zh) | 2005-09-05 | 2006-09-05 | 读/写器及其通信方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005256969A JP4584082B2 (ja) | 2005-09-05 | 2005-09-05 | リーダ・ライタ及び通信方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007074153A true JP2007074153A (ja) | 2007-03-22 |
JP4584082B2 JP4584082B2 (ja) | 2010-11-17 |
Family
ID=37607003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005256969A Expired - Fee Related JP4584082B2 (ja) | 2005-09-05 | 2005-09-05 | リーダ・ライタ及び通信方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7487921B2 (ja) |
EP (2) | EP2284763B1 (ja) |
JP (1) | JP4584082B2 (ja) |
KR (1) | KR20070026196A (ja) |
CN (1) | CN1928885B (ja) |
DE (1) | DE602006017939D1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8310345B2 (en) | 2008-05-08 | 2012-11-13 | Kabushiki Kaisha Toshiba | Receiving apparatus |
US8773244B2 (en) | 2008-04-30 | 2014-07-08 | Felica Networks, Inc. | Communication apparatus and method of controlling antenna characteristics |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070039143A (ko) * | 2004-07-15 | 2007-04-11 | 마스터카드 인터내셔날, 인코포레이티드 | 원추대의 유효 범위를 갖는 비접촉식 결재 카드 리더기 |
US8169185B2 (en) | 2006-01-31 | 2012-05-01 | Mojo Mobility, Inc. | System and method for inductive charging of portable devices |
US11201500B2 (en) | 2006-01-31 | 2021-12-14 | Mojo Mobility, Inc. | Efficiencies and flexibilities in inductive (wireless) charging |
US7952322B2 (en) | 2006-01-31 | 2011-05-31 | Mojo Mobility, Inc. | Inductive power source and charging system |
US11329511B2 (en) | 2006-06-01 | 2022-05-10 | Mojo Mobility Inc. | Power source, charging system, and inductive receiver for mobile devices |
US7948208B2 (en) | 2006-06-01 | 2011-05-24 | Mojo Mobility, Inc. | Power source, charging system, and inductive receiver for mobile devices |
US20110050164A1 (en) | 2008-05-07 | 2011-03-03 | Afshin Partovi | System and methods for inductive charging, and improvements and uses thereof |
CN101645129B (zh) * | 2008-08-05 | 2013-02-13 | 爱思开电讯投资(中国)有限公司 | 一种在近场通信中提供安全的方法和装置 |
EP2580844A4 (en) | 2010-06-11 | 2016-05-25 | Mojo Mobility Inc | WIRELESS POWER TRANSFER SYSTEM SUPPORTING INTEROPERABILITY AND MULTIPOLAR MAGNETS FOR USE WITH THIS SYSTEM |
US9178369B2 (en) | 2011-01-18 | 2015-11-03 | Mojo Mobility, Inc. | Systems and methods for providing positioning freedom, and support of different voltages, protocols, and power levels in a wireless power system |
US10115520B2 (en) | 2011-01-18 | 2018-10-30 | Mojo Mobility, Inc. | Systems and method for wireless power transfer |
US9496732B2 (en) | 2011-01-18 | 2016-11-15 | Mojo Mobility, Inc. | Systems and methods for wireless power transfer |
US11342777B2 (en) | 2011-01-18 | 2022-05-24 | Mojo Mobility, Inc. | Powering and/or charging with more than one protocol |
US20130271069A1 (en) | 2012-03-21 | 2013-10-17 | Mojo Mobility, Inc. | Systems and methods for wireless power transfer |
US9722447B2 (en) | 2012-03-21 | 2017-08-01 | Mojo Mobility, Inc. | System and method for charging or powering devices, such as robots, electric vehicles, or other mobile devices or equipment |
US9766322B2 (en) * | 2013-03-14 | 2017-09-19 | Ensco, Inc. | Geolocation with radio-frequency ranging |
US9837846B2 (en) | 2013-04-12 | 2017-12-05 | Mojo Mobility, Inc. | System and method for powering or charging receivers or devices having small surface areas or volumes |
KR102232725B1 (ko) | 2014-08-04 | 2021-03-26 | 삼성전자주식회사 | Nfc 장치의 동작 방법 및 nfc 장치 |
CN104598854A (zh) * | 2015-01-16 | 2015-05-06 | 孟庆国 | 一种身份证集中解码系统 |
EP3107176B1 (fr) * | 2015-06-18 | 2018-04-04 | STMicroelectronics (Grand Ouest) SAS | Procédé de gestion d'un transfert sans contact d'énergie d'un émetteur vers un récepteur, et émetteur correspondant |
US10937019B2 (en) * | 2016-06-08 | 2021-03-02 | Square, Inc. | Wireless communication system with auxiliary antenna |
US10318953B2 (en) | 2016-06-29 | 2019-06-11 | Square, Inc. | Near field communication flex circuit |
US10594599B2 (en) | 2016-08-26 | 2020-03-17 | Cisco Technology, Inc. | Fibre channel fabric slow drain mitigation |
WO2018180149A1 (ja) * | 2017-03-29 | 2018-10-04 | 株式会社村田製作所 | アンテナ装置および電子機器 |
US10949189B2 (en) | 2017-06-28 | 2021-03-16 | Square, Inc. | Securely updating software on connected electronic devices |
US10635820B1 (en) | 2017-09-29 | 2020-04-28 | Square, Inc. | Update policy-based anti-rollback techniques |
US11444485B2 (en) | 2019-02-05 | 2022-09-13 | Mojo Mobility, Inc. | Inductive charging system with charging electronics physically separated from charging coil |
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JP2003067693A (ja) * | 2001-08-27 | 2003-03-07 | Fujitsu Ltd | 非接触icカード |
JP2004102404A (ja) * | 2002-09-05 | 2004-04-02 | Denso Wave Inc | Icカードリーダ |
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US3665468A (en) * | 1970-02-25 | 1972-05-23 | Air Land Systems Co | Radio communication system |
US7084739B2 (en) * | 2002-06-28 | 2006-08-01 | Brother Kogyo Kabushiki Kaisha | Communication system, and interrogator and transponder for the system |
US7019651B2 (en) | 2003-06-16 | 2006-03-28 | Sensormatic Electronics Corporation | EAS and RFID systems incorporating field canceling core antennas |
JP2006060310A (ja) * | 2004-08-17 | 2006-03-02 | Fujitsu Ltd | リーダライタ及びrfidシステム |
-
2005
- 2005-09-05 JP JP2005256969A patent/JP4584082B2/ja not_active Expired - Fee Related
-
2006
- 2006-08-28 US US11/510,694 patent/US7487921B2/en not_active Expired - Fee Related
- 2006-08-31 KR KR1020060083521A patent/KR20070026196A/ko not_active Application Discontinuation
- 2006-09-04 EP EP10177544A patent/EP2284763B1/en not_active Expired - Fee Related
- 2006-09-04 DE DE602006017939T patent/DE602006017939D1/de active Active
- 2006-09-04 EP EP06018463A patent/EP1760629B1/en not_active Expired - Fee Related
- 2006-09-05 CN CN2006101285808A patent/CN1928885B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003067693A (ja) * | 2001-08-27 | 2003-03-07 | Fujitsu Ltd | 非接触icカード |
JP2004102404A (ja) * | 2002-09-05 | 2004-04-02 | Denso Wave Inc | Icカードリーダ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8773244B2 (en) | 2008-04-30 | 2014-07-08 | Felica Networks, Inc. | Communication apparatus and method of controlling antenna characteristics |
US8310345B2 (en) | 2008-05-08 | 2012-11-13 | Kabushiki Kaisha Toshiba | Receiving apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR20070026196A (ko) | 2007-03-08 |
DE602006017939D1 (de) | 2010-12-16 |
JP4584082B2 (ja) | 2010-11-17 |
EP2284763B1 (en) | 2012-02-01 |
US7487921B2 (en) | 2009-02-10 |
CN1928885A (zh) | 2007-03-14 |
EP1760629A2 (en) | 2007-03-07 |
EP1760629A3 (en) | 2007-09-26 |
US20070051809A1 (en) | 2007-03-08 |
CN1928885B (zh) | 2011-09-28 |
EP2284763A1 (en) | 2011-02-16 |
EP1760629B1 (en) | 2010-11-03 |
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