WO2005053179A1 - Enhanced magnetic field communication system - Google Patents
Enhanced magnetic field communication system Download PDFInfo
- Publication number
- WO2005053179A1 WO2005053179A1 PCT/US2004/039608 US2004039608W WO2005053179A1 WO 2005053179 A1 WO2005053179 A1 WO 2005053179A1 US 2004039608 W US2004039608 W US 2004039608W WO 2005053179 A1 WO2005053179 A1 WO 2005053179A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna element
- circuit
- amplifier
- signal
- impedance
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 40
- 230000005684 electric field Effects 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 39
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000001939 inductive effect Effects 0.000 claims description 13
- 230000004044 response Effects 0.000 claims description 11
- 230000003071 parasitic effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000005672 electromagnetic field Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 10
- 239000011162 core material Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- G06K19/0723—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 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- 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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- H04B5/22—
-
- H04B5/48—
-
- H04B5/26—
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04812179A EP1687911A1 (en) | 2003-11-25 | 2004-11-24 | Enhanced magnetic field communication system |
CA002546828A CA2546828A1 (en) | 2003-11-25 | 2004-11-24 | Enhanced magnetic field communication system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/722,093 | 2003-11-25 | ||
US10/722,093 US6940466B2 (en) | 2003-11-25 | 2003-11-25 | Enhanced magnetic field communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005053179A1 true WO2005053179A1 (en) | 2005-06-09 |
Family
ID=34591960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/039608 WO2005053179A1 (en) | 2003-11-25 | 2004-11-24 | Enhanced magnetic field communication system |
Country Status (5)
Country | Link |
---|---|
US (3) | US6940466B2 (en) |
EP (1) | EP1687911A1 (en) |
CN (1) | CN1886906A (en) |
CA (1) | CA2546828A1 (en) |
WO (1) | WO2005053179A1 (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1981176A1 (en) | 2007-04-11 | 2008-10-15 | Oticon A/S | A wireless communication device for inductive coupling to another device |
EP2129170A1 (en) | 2008-05-30 | 2009-12-02 | Oticon A/S | Low latency, high quality link for audio transmission |
US7710345B2 (en) | 2003-11-25 | 2010-05-04 | Starkey Laboratories, Inc. | Enhanced magnetic field communication system |
EP2211579A1 (en) | 2009-01-21 | 2010-07-28 | Oticon A/S | Transmit power control in low power wireless communication system |
US8514965B2 (en) | 2010-03-10 | 2013-08-20 | Oticon A/S | Wireless communication system with a modulation bandwidth comparable to or exceeding the bandwidth of the transmitter and/or receiver antennas |
EP2869599A1 (en) | 2013-11-05 | 2015-05-06 | Oticon A/s | A binaural hearing assistance system comprising a database of head related transfer functions |
EP2871857A1 (en) | 2013-11-07 | 2015-05-13 | Oticon A/s | A binaural hearing assistance system comprising two wireless interfaces |
EP2899996A1 (en) | 2009-05-18 | 2015-07-29 | Oticon A/s | Signal enhancement using wireless streaming |
EP3054706A2 (en) | 2015-02-09 | 2016-08-10 | Oticon A/s | A binaural hearing system and a hearing device comprising a beamformer unit |
US9450456B2 (en) | 2008-04-21 | 2016-09-20 | Qualcomm Incorporated | System and method for efficient wireless power transfer to devices located on and outside a charging base |
US9461714B2 (en) | 2008-03-05 | 2016-10-04 | Qualcomm Incorporated | Packaging and details of a wireless power device |
EP3107315A1 (en) | 2015-06-09 | 2016-12-21 | Oticon A/s | A hearing device comprising a signal generator for masking tinnitus |
US9559526B2 (en) | 2009-01-22 | 2017-01-31 | Qualcomm Incorporated | Adaptive power control for wireless charging of devices |
EP3337190A1 (en) | 2016-12-13 | 2018-06-20 | Oticon A/s | A method of reducing noise in an audio processing device |
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US7369019B2 (en) * | 2003-12-18 | 2008-05-06 | Altierre Corporation | RF backscatter transmission with zero DC power consumption |
US7342508B2 (en) * | 2003-12-26 | 2008-03-11 | Medtronic Minimed, Inc. | Telemetry system and method with variable parameters |
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US7562813B2 (en) * | 2006-05-10 | 2009-07-21 | First Data Corporation | System and method for activating telephone-based payment instrument |
US8172762B2 (en) * | 2006-09-01 | 2012-05-08 | Proteus Biomedical, Inc. | Simultaneous blood flow and hematocrit sensor |
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IL180334A (en) * | 2006-12-26 | 2014-03-31 | Elta Systems Ltd | Method and system for monitoring an underground electric cable |
US20080174500A1 (en) * | 2007-01-23 | 2008-07-24 | Microsoft Corporation | Magnetic communication link with diversity antennas |
JP2008250573A (en) * | 2007-03-29 | 2008-10-16 | Brother Ind Ltd | Antenna device and radio tag communication apparatus |
US7733288B2 (en) * | 2007-03-30 | 2010-06-08 | Microwave Mitigation And Detection (“Mmad”) | Passive anti-jamming antenna system and method |
US8838472B2 (en) | 2007-08-14 | 2014-09-16 | First Data Corporation | Mobile system and method for exchanging point value |
DE102007042592A1 (en) * | 2007-09-07 | 2009-03-26 | Siemens Medical Instruments Pte. Ltd. | Transmission device for a hearing device with foil conductor shield and self-shielded coil |
JP4603069B2 (en) * | 2008-03-17 | 2010-12-22 | 株式会社日本自動車部品総合研究所 | Receiver |
CN101978383B (en) * | 2008-03-20 | 2016-03-23 | 国泰银恩企业有限责任公司 | For transmission circuit and the NFC device or the RFID read/write device that comprise this transmission circuit of contactless communication |
US8629650B2 (en) | 2008-05-13 | 2014-01-14 | Qualcomm Incorporated | Wireless power transfer using multiple transmit antennas |
US8878393B2 (en) | 2008-05-13 | 2014-11-04 | Qualcomm Incorporated | Wireless power transfer for vehicles |
US20100201312A1 (en) | 2009-02-10 | 2010-08-12 | Qualcomm Incorporated | Wireless power transfer for portable enclosures |
US9312924B2 (en) | 2009-02-10 | 2016-04-12 | Qualcomm Incorporated | Systems and methods relating to multi-dimensional wireless charging |
US8854224B2 (en) | 2009-02-10 | 2014-10-07 | Qualcomm Incorporated | Conveying device information relating to wireless charging |
US8478332B2 (en) * | 2009-07-31 | 2013-07-02 | Stmicroelectronics, S.R.L. | Receiver for signal communication system with disturbance rejection circuit |
EP2282406B1 (en) * | 2009-07-31 | 2016-04-20 | STMicroelectronics Srl | Receiver for signal communications with disturbances rejection |
US9508213B2 (en) * | 2010-03-22 | 2016-11-29 | Dominic M. Kotab | Systems and methods of reading gaming chips and other stacked items |
EP2393215B1 (en) | 2010-06-03 | 2015-10-21 | Nxp B.V. | Radio receiver and transmitter circuits, and corresponding methods |
WO2013135251A1 (en) | 2012-03-14 | 2013-09-19 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V. | A method for multi-mode, multi-load, and multi-domain optimization of a multi-channel near-field rf transmitter |
US9885766B2 (en) | 2012-04-17 | 2018-02-06 | Transarray LLC | Magnetic-resonance transceiver-phased array that compensates for reactive and resistive components of mutual impedance between array elements and circuit and method thereof |
US9431168B2 (en) * | 2012-06-13 | 2016-08-30 | Advanced Micro Devices, Inc. | Contactless interconnect |
US9825655B2 (en) * | 2013-06-28 | 2017-11-21 | Nokia Technologies Oy | Method and apparatus for an antenna |
DE102014203169A1 (en) | 2014-02-21 | 2015-09-10 | Siemens Medical Instruments Pte. Ltd. | Antenna with shielding device and manufacturing method |
KR102229022B1 (en) | 2014-03-18 | 2021-03-17 | 삼성전자주식회사 | Device of detecting card having magnetic field monitor and System including the same |
CN104361685A (en) * | 2014-11-07 | 2015-02-18 | 国网湖南省电力公司岳阳供电分公司 | Power purchase type intelligent electric meter box |
US10654365B2 (en) * | 2015-04-29 | 2020-05-19 | Aptiv Technologies Limited | Bifurcated balanced electromagnetic resonator |
DE102015111038B4 (en) * | 2015-07-08 | 2021-05-06 | Infineon Technologies Ag | A vertical ferrite antenna with prefabricated connection components |
WO2017069963A1 (en) * | 2015-10-20 | 2017-04-27 | Analog Devices Global | Balancing sense amplifier for ethernet transceiver |
DE102016215503A1 (en) * | 2016-08-18 | 2018-02-22 | Audi Ag | Electromagnetic decoupling of an antenna unit of a motor vehicle from an energy coupling device |
FR3062240B1 (en) * | 2017-01-23 | 2019-04-12 | Eray Innovation | RFID AND / OR NFC ANTENNA CIRCUIT |
US10763037B2 (en) * | 2018-03-23 | 2020-09-01 | Analog Devices, Inc. | EMI rejection for near field links |
DE102019123198A1 (en) * | 2019-08-29 | 2021-03-04 | Infineon Technologies Ag | Near field communication device, method for operating a near field communication device, smart card and wearable |
CN114866108B (en) * | 2022-07-05 | 2022-09-23 | 江苏游隼微电子有限公司 | Receiver for quickly recovering bias voltage in half-duplex communication |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4638253A (en) * | 1984-10-29 | 1987-01-20 | General Electric Company | Mutual inductance NMR RF coil matching device |
EP0700169A2 (en) * | 1994-08-30 | 1996-03-06 | Matsushita Electric Industrial Co., Ltd. | Transmit-receive switch circuit for radiocommunication apparatus |
WO2001067413A1 (en) * | 2000-03-08 | 2001-09-13 | Motorola Inc. | Electrostatic and electromagnetic communication systems and combinations thereof |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415316A (en) * | 1944-03-08 | 1947-02-04 | Hazeltine Research Inc | Wave-signal receiving system |
US3886450A (en) * | 1973-08-06 | 1975-05-27 | Sun Electric Corp | Wireless portable tachometer |
US4723319A (en) * | 1986-02-03 | 1988-02-02 | General Motors Corporation | Signal seeking radio with sensitivity reduction responsive to ambient light related parameter |
US5258728A (en) * | 1987-09-30 | 1993-11-02 | Fujitsu Ten Limited | Antenna circuit for a multi-band antenna |
US5296866A (en) * | 1991-07-29 | 1994-03-22 | The United States Of America As Represented By The Adminsitrator Of The National Aeronautics And Space Administration | Active antenna |
US5722063A (en) * | 1994-12-16 | 1998-02-24 | Qualcomm Incorporated | Method and apparatus for increasing receiver immunity to interference |
US5757208A (en) * | 1996-05-01 | 1998-05-26 | Motorola, Inc. | Programmable array and method for routing power busses therein |
US5757288A (en) * | 1996-05-02 | 1998-05-26 | Mitron Systems Corporation | Vehicle detector system and method |
US6438360B1 (en) * | 1999-07-22 | 2002-08-20 | Motorola, Inc. | Amplifier system with load control to produce an amplitude envelope |
US6606489B2 (en) * | 2001-02-14 | 2003-08-12 | Rf Micro Devices, Inc. | Differential to single-ended converter with large output swing |
US6636116B2 (en) * | 2001-10-05 | 2003-10-21 | Texas Instruments Incorporated | Fully differential current feedback amplifier |
US7071776B2 (en) * | 2001-10-22 | 2006-07-04 | Kyocera Wireless Corp. | Systems and methods for controlling output power in a communication device |
US7113033B2 (en) * | 2002-01-31 | 2006-09-26 | Qualcomm Incorporated | Variable impedance load for a variable gain radio frequency amplifier |
TWI275200B (en) | 2002-05-08 | 2007-03-01 | Sony Ericsson Mobile Comm Ab | Tuneable radio antenna |
JP4207641B2 (en) * | 2003-04-16 | 2009-01-14 | パナソニック株式会社 | Portable receiver |
US7277684B2 (en) * | 2003-04-25 | 2007-10-02 | Fujitsu Ten Limited | Antenna amplifier and shared antenna amplifier |
JP4292914B2 (en) * | 2003-08-07 | 2009-07-08 | パナソニック株式会社 | Portable receiver and duplexer used therefor |
US6940466B2 (en) | 2003-11-25 | 2005-09-06 | Starkey Laboratories, Inc. | Enhanced magnetic field communication system |
US7512383B2 (en) * | 2003-11-26 | 2009-03-31 | Starkey Laboratories, Inc. | Transmit-receive switching in wireless hearing aids |
-
2003
- 2003-11-25 US US10/722,093 patent/US6940466B2/en not_active Expired - Lifetime
-
2004
- 2004-11-24 WO PCT/US2004/039608 patent/WO2005053179A1/en active Application Filing
- 2004-11-24 CA CA002546828A patent/CA2546828A1/en not_active Abandoned
- 2004-11-24 EP EP04812179A patent/EP1687911A1/en not_active Withdrawn
- 2004-11-24 CN CNA2004800346875A patent/CN1886906A/en active Pending
-
2005
- 2005-06-23 US US11/165,142 patent/US7358923B2/en not_active Expired - Fee Related
-
2008
- 2008-03-19 US US12/051,109 patent/US7710345B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4638253A (en) * | 1984-10-29 | 1987-01-20 | General Electric Company | Mutual inductance NMR RF coil matching device |
EP0700169A2 (en) * | 1994-08-30 | 1996-03-06 | Matsushita Electric Industrial Co., Ltd. | Transmit-receive switch circuit for radiocommunication apparatus |
WO2001067413A1 (en) * | 2000-03-08 | 2001-09-13 | Motorola Inc. | Electrostatic and electromagnetic communication systems and combinations thereof |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7710345B2 (en) | 2003-11-25 | 2010-05-04 | Starkey Laboratories, Inc. | Enhanced magnetic field communication system |
US8526879B2 (en) | 2007-04-11 | 2013-09-03 | Oticon A/S | Wireless communication device for inductive coupling to another device |
EP1981176A1 (en) | 2007-04-11 | 2008-10-15 | Oticon A/S | A wireless communication device for inductive coupling to another device |
EP2357734A1 (en) | 2007-04-11 | 2011-08-17 | Oticon Medical A/S | A wireless communication device for inductive coupling to another device |
US9461714B2 (en) | 2008-03-05 | 2016-10-04 | Qualcomm Incorporated | Packaging and details of a wireless power device |
US9979230B2 (en) | 2008-04-21 | 2018-05-22 | Qualcomm Incorporated | Short range efficient wireless power transfer including a charging base transmitter built into a desktop component and a power relay integrated into a desktop |
US9450456B2 (en) | 2008-04-21 | 2016-09-20 | Qualcomm Incorporated | System and method for efficient wireless power transfer to devices located on and outside a charging base |
EP2129170A1 (en) | 2008-05-30 | 2009-12-02 | Oticon A/S | Low latency, high quality link for audio transmission |
US8145246B2 (en) | 2008-05-30 | 2012-03-27 | Oticon A/S | Low latency, high quality link for audio transmission |
EP2211579A1 (en) | 2009-01-21 | 2010-07-28 | Oticon A/S | Transmit power control in low power wireless communication system |
US8190189B2 (en) | 2009-01-21 | 2012-05-29 | Oticon A/S | Power management in low power wireless link |
US9559526B2 (en) | 2009-01-22 | 2017-01-31 | Qualcomm Incorporated | Adaptive power control for wireless charging of devices |
EP2899996A1 (en) | 2009-05-18 | 2015-07-29 | Oticon A/s | Signal enhancement using wireless streaming |
US9544698B2 (en) | 2009-05-18 | 2017-01-10 | Oticon A/S | Signal enhancement using wireless streaming |
US8514965B2 (en) | 2010-03-10 | 2013-08-20 | Oticon A/S | Wireless communication system with a modulation bandwidth comparable to or exceeding the bandwidth of the transmitter and/or receiver antennas |
EP2869599A1 (en) | 2013-11-05 | 2015-05-06 | Oticon A/s | A binaural hearing assistance system comprising a database of head related transfer functions |
US10182300B2 (en) | 2013-11-07 | 2019-01-15 | Oticon A/S | Binaural hearing aid system comprising two wireless interfaces and a user interface |
US9712927B2 (en) | 2013-11-07 | 2017-07-18 | Oticon A/S | Binaural hearing assistance system comprising two wireless interfaces |
US9924280B2 (en) | 2013-11-07 | 2018-03-20 | Oticon A/S | Binaural hearing assistance system comprising two wireless interfaces |
US9924281B2 (en) | 2013-11-07 | 2018-03-20 | Oticon A/S | Binaural hearing assistance system comprising two wireless interfaces |
EP2871857A1 (en) | 2013-11-07 | 2015-05-13 | Oticon A/s | A binaural hearing assistance system comprising two wireless interfaces |
US10524063B2 (en) | 2013-11-07 | 2019-12-31 | Oticon A/S | Binaural hearing aid system comprising two wireless interfaces and a user interface |
EP3713254A2 (en) | 2013-11-07 | 2020-09-23 | Oticon A/s | A binaural hearing assistance system comprising two wireless interfaces |
EP3054706A2 (en) | 2015-02-09 | 2016-08-10 | Oticon A/s | A binaural hearing system and a hearing device comprising a beamformer unit |
US9986346B2 (en) | 2015-02-09 | 2018-05-29 | Oticon A/S | Binaural hearing system and a hearing device comprising a beamformer unit |
US10129672B2 (en) | 2015-06-09 | 2018-11-13 | Oticon A/S | Hearing device comprising a signal generator for masking tinnitus |
EP3107315A1 (en) | 2015-06-09 | 2016-12-21 | Oticon A/s | A hearing device comprising a signal generator for masking tinnitus |
EP3337190A1 (en) | 2016-12-13 | 2018-06-20 | Oticon A/s | A method of reducing noise in an audio processing device |
US10499167B2 (en) | 2016-12-13 | 2019-12-03 | Oticon A/S | Method of reducing noise in an audio processing device |
Also Published As
Publication number | Publication date |
---|---|
US20050110700A1 (en) | 2005-05-26 |
CA2546828A1 (en) | 2005-06-09 |
EP1687911A1 (en) | 2006-08-09 |
US20080165074A1 (en) | 2008-07-10 |
US7358923B2 (en) | 2008-04-15 |
CN1886906A (en) | 2006-12-27 |
US6940466B2 (en) | 2005-09-06 |
US7710345B2 (en) | 2010-05-04 |
US20050243010A1 (en) | 2005-11-03 |
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