US4999636A
(en)
*
|
1989-02-17 |
1991-03-12 |
Amtech Technology Corporation |
Range limiting system
|
US5030807A
(en)
*
|
1990-01-16 |
1991-07-09 |
Amtech Corporation |
System for reading and writing data from and into remote tags
|
US5055659A
(en)
*
|
1990-02-06 |
1991-10-08 |
Amtech Technology Corp. |
High speed system for reading and writing data from and into remote tags
|
US5291204A
(en)
*
|
1990-07-09 |
1994-03-01 |
United Technologies Corporation |
Radar response system
|
US5343906A
(en)
*
|
1992-05-15 |
1994-09-06 |
Biodigital Technologies, Inc. |
Emisson validation system
|
USRE42773E1
(en)
|
1992-06-17 |
2011-10-04 |
Round Rock Research, Llc |
Method of manufacturing an enclosed transceiver
|
US7158031B2
(en)
|
1992-08-12 |
2007-01-02 |
Micron Technology, Inc. |
Thin, flexible, RFID label and system for use
|
US5491482A
(en)
*
|
1992-12-29 |
1996-02-13 |
David Sarnoff Research Center, Inc. |
Electronic system and method for remote identification of coded articles and the like
|
US5701127A
(en)
*
|
1993-02-23 |
1997-12-23 |
Texas Instruments Incorporated |
Automatic vehicle identification system capable of vehicle lane discrimination
|
EP0638871A3
(de)
*
|
1993-08-05 |
1995-12-13 |
Sel Alcatel Ag |
Vorrichtung zum Erfassen und Auslesen von relativ zu dieser Vorrichtung beweglichen Transpondern.
|
DE69516568T2
(de)
*
|
1994-03-04 |
2001-01-04 |
Ncr International, Inc. |
Bereichserweitertes drahtloses Übertragungssystem mit modulierter Rückstrahlung
|
US5450087A
(en)
*
|
1994-04-06 |
1995-09-12 |
Texas Instruments Incorporated |
Transponder maintenance mode method
|
US5488376A
(en)
*
|
1994-04-26 |
1996-01-30 |
Texas Instruments Incorporated |
Transponder interface circuit
|
US5471212A
(en)
*
|
1994-04-26 |
1995-11-28 |
Texas Instruments Incorporated |
Multi-stage transponder wake-up, method and structure
|
US5448242A
(en)
*
|
1994-04-26 |
1995-09-05 |
Texas Instruments Incorporated |
Modulation field detection, method and structure
|
US5731754A
(en)
*
|
1994-06-03 |
1998-03-24 |
Computer Methods Corporation |
Transponder and sensor apparatus for sensing and transmitting vehicle tire parameter data
|
US5525992A
(en)
*
|
1994-11-14 |
1996-06-11 |
Texas Instruments Deutschland Gmbh |
Method and system for conserving power in a recognition system
|
US6696879B1
(en)
|
1996-05-13 |
2004-02-24 |
Micron Technology, Inc. |
Radio frequency data communications device
|
US6941124B1
(en)
|
1996-05-13 |
2005-09-06 |
Micron Technology, Inc. |
Method of speeding power-up of an amplifier, and amplifier
|
US6130602A
(en)
|
1996-05-13 |
2000-10-10 |
Micron Technology, Inc. |
Radio frequency data communications device
|
US6836468B1
(en)
|
1996-05-13 |
2004-12-28 |
Micron Technology, Inc. |
Radio frequency data communications device
|
US6774685B2
(en)
|
1996-05-13 |
2004-08-10 |
Micron Technology, Inc. |
Radio frequency data communications device
|
US5970398A
(en)
*
|
1996-07-30 |
1999-10-19 |
Micron Communications, Inc. |
Radio frequency antenna with current controlled sensitivity
|
US6466131B1
(en)
*
|
1996-07-30 |
2002-10-15 |
Micron Technology, Inc. |
Radio frequency data communications device with adjustable receiver sensitivity and method
|
US5774022A
(en)
*
|
1996-08-29 |
1998-06-30 |
Micron Communications, Inc. |
Digital clock recovery loop
|
US6100765A
(en)
*
|
1998-01-09 |
2000-08-08 |
Micron Technology, Inc. |
Digital clock recovery loop
|
US6107910A
(en)
*
|
1996-11-29 |
2000-08-22 |
X-Cyte, Inc. |
Dual mode transmitter/receiver and decoder for RF transponder tags
|
US6456668B1
(en)
|
1996-12-31 |
2002-09-24 |
Lucent Technologies Inc. |
QPSK modulated backscatter system
|
US6243012B1
(en)
|
1996-12-31 |
2001-06-05 |
Lucent Technologies Inc. |
Inexpensive modulated backscatter reflector
|
US6184841B1
(en)
|
1996-12-31 |
2001-02-06 |
Lucent Technologies Inc. |
Antenna array in an RFID system
|
US5784686A
(en)
*
|
1996-12-31 |
1998-07-21 |
Lucent Technologies Inc. |
IQ combiner technology in modulated backscatter system
|
US6130623A
(en)
*
|
1996-12-31 |
2000-10-10 |
Lucent Technologies Inc. |
Encryption for modulated backscatter systems
|
US6046683A
(en)
*
|
1996-12-31 |
2000-04-04 |
Lucent Technologies Inc. |
Modulated backscatter location system
|
US5952922A
(en)
*
|
1996-12-31 |
1999-09-14 |
Lucent Technologies Inc. |
In-building modulated backscatter system
|
US6208062B1
(en)
*
|
1997-08-18 |
2001-03-27 |
X-Cyte, Inc. |
Surface acoustic wave transponder configuration
|
US6633226B1
(en)
|
1997-08-18 |
2003-10-14 |
X-Cyte, Inc. |
Frequency hopping spread spectrum passive acoustic wave identification device
|
US5986382A
(en)
|
1997-08-18 |
1999-11-16 |
X-Cyte, Inc. |
Surface acoustic wave transponder configuration
|
US6114971A
(en)
|
1997-08-18 |
2000-09-05 |
X-Cyte, Inc. |
Frequency hopping spread spectrum passive acoustic wave identification device
|
US6060815A
(en)
|
1997-08-18 |
2000-05-09 |
X-Cyte, Inc. |
Frequency mixing passive transponder
|
US6339385B1
(en)
|
1997-08-20 |
2002-01-15 |
Micron Technology, Inc. |
Electronic communication devices, methods of forming electrical communication devices, and communication methods
|
US6281794B1
(en)
|
1998-01-02 |
2001-08-28 |
Intermec Ip Corp. |
Radio frequency transponder with improved read distance
|
US6177872B1
(en)
|
1998-03-13 |
2001-01-23 |
Intermec Ip Corp. |
Distributed impedance matching circuit for high reflection coefficient load
|
US6249227B1
(en)
|
1998-01-05 |
2001-06-19 |
Intermec Ip Corp. |
RFID integrated in electronic assets
|
US6104291A
(en)
*
|
1998-01-09 |
2000-08-15 |
Intermec Ip Corp. |
Method and apparatus for testing RFID tags
|
US6501807B1
(en)
|
1998-02-06 |
2002-12-31 |
Intermec Ip Corp. |
Data recovery system for radio frequency identification interrogator
|
US6122329A
(en)
*
|
1998-02-06 |
2000-09-19 |
Intermec Ip Corp. |
Radio frequency identification interrogator signal processing system for reading moving transponders
|
US6441740B1
(en)
|
1998-02-27 |
2002-08-27 |
Intermec Ip Corp. |
Radio frequency identification transponder having a reflector
|
US6639509B1
(en)
|
1998-03-16 |
2003-10-28 |
Intermec Ip Corp. |
System and method for communicating with an RFID transponder with reduced noise and interference
|
US6459726B1
(en)
*
|
1998-04-24 |
2002-10-01 |
Micron Technology, Inc. |
Backscatter interrogators, communication systems and backscatter communication methods
|
US6121878A
(en)
*
|
1998-05-01 |
2000-09-19 |
Intermec Ip Corp. |
System for controlling assets
|
US6201474B1
(en)
|
1998-10-21 |
2001-03-13 |
Intermec Ip Corp. |
Magnetic tape storage media having RFID transponders
|
US6100804A
(en)
*
|
1998-10-29 |
2000-08-08 |
Intecmec Ip Corp. |
Radio frequency identification system
|
US6236223B1
(en)
|
1998-11-09 |
2001-05-22 |
Intermec Ip Corp. |
Method and apparatus for wireless radio frequency testing of RFID integrated circuits
|
US6650230B1
(en)
|
1998-11-19 |
2003-11-18 |
Ncr Corporation |
Modulated backscatter wireless communication system having an extended range
|
US6259991B1
(en)
|
1999-02-10 |
2001-07-10 |
X-Cyte Inc. |
Environmental location system
|
FR2793885A1
(fr)
*
|
1999-05-17 |
2000-11-24 |
Thomson Csf |
Procede et dispositif de guidage electromagnetique, appliques notamment a la poursuite de cibles
|
US6369710B1
(en)
|
2000-03-27 |
2002-04-09 |
Lucent Technologies Inc. |
Wireless security system
|
US6806812B1
(en)
*
|
2000-04-26 |
2004-10-19 |
Micron Technology, Inc. |
Automated antenna trim for transmitting and receiving semiconductor devices
|
US8266465B2
(en)
|
2000-07-26 |
2012-09-11 |
Bridgestone Americas Tire Operation, LLC |
System for conserving battery life in a battery operated device
|
US7161476B2
(en)
|
2000-07-26 |
2007-01-09 |
Bridgestone Firestone North American Tire, Llc |
Electronic tire management system
|
US7911324B2
(en)
*
|
2001-02-16 |
2011-03-22 |
Automotive Technologies International, Inc. |
Method and system for obtaining information about RFID-equipped objects
|
US7039359B2
(en)
*
|
2000-12-07 |
2006-05-02 |
Intermec Ip Corp. |
RFID interrogator having customized radio parameters with local memory storage
|
US9084076B2
(en)
|
2001-02-16 |
2015-07-14 |
Intelligent Technologies International, Inc. |
Techniques for obtaining information about objects
|
US6782247B2
(en)
*
|
2001-04-02 |
2004-08-24 |
Zeevo, Inc. |
CMOS frequency conversion using dual mixers for sideband suppression
|
US20030030542A1
(en)
*
|
2001-08-10 |
2003-02-13 |
Von Hoffmann Gerard |
PDA security system
|
US6737973B2
(en)
*
|
2001-10-15 |
2004-05-18 |
3M Innovative Properties Company |
Amplifier modulation
|
US6910911B2
(en)
|
2002-06-27 |
2005-06-28 |
Vocollect, Inc. |
Break-away electrical connector
|
US20040022227A1
(en)
*
|
2002-08-02 |
2004-02-05 |
Lynch Randall Gene |
System and method for asset tracking
|
DE10254200B4
(de)
*
|
2002-11-20 |
2006-04-20 |
Siemens Ag |
Vorrichtung und Verfahren zum Erkennen der Sitzbelegung in einem Fahrzeug
|
US20050058292A1
(en)
*
|
2003-09-11 |
2005-03-17 |
Impinj, Inc., A Delaware Corporation |
Secure two-way RFID communications
|
US7705711B2
(en)
*
|
2003-09-30 |
2010-04-27 |
Sony Corporation |
Information-processing apparatus, wireless communication system and wireless communication method
|
US7119692B2
(en)
*
|
2003-11-10 |
2006-10-10 |
3M Innovative Properties Company |
System for detecting radio-frequency identification tags
|
US7372364B2
(en)
*
|
2003-11-10 |
2008-05-13 |
3M Innovative Properties Company |
Algorithm for RFID security
|
US7366465B2
(en)
*
|
2004-11-19 |
2008-04-29 |
Sirit Technologies Inc. |
Homodyne RFID receiver and method
|
US7199713B2
(en)
*
|
2004-11-19 |
2007-04-03 |
Sirit Technologies, Inc. |
Homodyne single mixer receiver and method therefor
|
US7209040B2
(en)
*
|
2004-11-19 |
2007-04-24 |
Sirit Technologies, Inc. |
Homodyne RFID receiver and method
|
US20070206705A1
(en)
*
|
2006-03-03 |
2007-09-06 |
Applied Wireless Identification Group, Inc. |
RFID reader with adjustable filtering and adaptive backscatter processing
|
US20070080930A1
(en)
*
|
2005-10-11 |
2007-04-12 |
Logan James R |
Terminal device for voice-directed work and information exchange
|
US7825867B2
(en)
*
|
2007-04-26 |
2010-11-02 |
Round Rock Research, Llc |
Methods and systems of changing antenna polarization
|
US7936268B2
(en)
*
|
2007-08-31 |
2011-05-03 |
Round Rock Research, Llc |
Selectively coupling to feed points of an antenna system
|
USD626949S1
(en)
|
2008-02-20 |
2010-11-09 |
Vocollect Healthcare Systems, Inc. |
Body-worn mobile device
|
US20100060424A1
(en)
*
|
2008-03-19 |
2010-03-11 |
Checkpoint Systems, Inc. |
Range Extension and Multiple Access in Modulated Backscatter Systems
|
US8115637B2
(en)
|
2008-06-03 |
2012-02-14 |
Micron Technology, Inc. |
Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals
|
US8386261B2
(en)
|
2008-11-14 |
2013-02-26 |
Vocollect Healthcare Systems, Inc. |
Training/coaching system for a voice-enabled work environment
|
US8188908B2
(en)
*
|
2010-01-29 |
2012-05-29 |
Amtech Systems, LLC |
System and method for measurement of distance to a tag by a modulated backscatter RFID reader
|
US8742975B2
(en)
|
2010-04-27 |
2014-06-03 |
Amtech Systems, LLC |
System and method for microwave ranging to a target in presence of clutter and multi-path effects
|
KR20110127968A
(ko)
*
|
2010-05-20 |
2011-11-28 |
엘에스산전 주식회사 |
R fid를 이용한 원격 제어 송수신 장치 및 그 방법
|
EP2407799B1
(en)
*
|
2010-07-16 |
2018-04-11 |
Sivers Ima AB |
Method and device for continuous wave radar measurements
|
US8659397B2
(en)
|
2010-07-22 |
2014-02-25 |
Vocollect, Inc. |
Method and system for correctly identifying specific RFID tags
|
USD643400S1
(en)
|
2010-08-19 |
2011-08-16 |
Vocollect Healthcare Systems, Inc. |
Body-worn mobile device
|
USD643013S1
(en)
|
2010-08-20 |
2011-08-09 |
Vocollect Healthcare Systems, Inc. |
Body-worn mobile device
|
CN102568214A
(zh)
*
|
2010-12-21 |
2012-07-11 |
数伦计算机技术(上海)有限公司 |
一种探测混有无rfid车辆的车辆顺序的方法
|
CN112083383B
(zh)
*
|
2020-08-30 |
2022-07-29 |
西南电子技术研究所(中国电子科技集团公司第十研究所) |
幅度/相位相关联合检测应答信号的方法
|