US Patent No: 5,541,604
Number of patents in Portfolio can not be more than 2000
Transponders, Interrogators, systems and methods for elimination of interrogator synchronization requirement
Stats
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Jul 30, 1996
Issued date -
Sep 3, 1993
filing date -
08/117,258
serial no -
In Force
status
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Abstract
A Radio Frequency Identification (RFID) system having an interrogator (12) and a transponder (14). The interrogator has a first tuned circuit (28) of a powering frequency for sending a powering burst to a transponder (14), a filter/demodulator (64) for receiving an wireless, modulated RF response from a transponder (14). The interrogator (12) further has a second tuned circuit (29) in electrical communication with a modulator (48), the second tuned circuit (29) having a selected bandwidth about a communication frequency, the selected bandwidth not substantially overlapping the powering frequency and encompassing the bandwidth of the modulated carrier of the RF response. The interrogator also has a controller (16) in electrical communication with the filter/demodulator (64) and the tuned circuits (28,29) and capable of enabling the first tuned circuit (28) to send the powering burst during a first time period and of enabling the modulator (48) in electrical communication with the second tuned circuit (29) to receive the RF response during a second time period. The transponder has a tuned circuit (34), a tuning circuit (54,56) in electrical communication with the tuned circuit (34) for modifying the frequency characteristics of the tuned circuit (34) such that it is can be tuned during the powering burst to the powering frequency and to be tuned during the RF response to the communication frequency. The transponder (14) also includes a demodulator (66) in electrical communication with the tuned circuit (34) for receiving the RF interrogation therefrom and for demodulating data from the RF interrogation.
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First Claim
Related Publications
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
| Patent Owner | Address | Total Patents |
|---|---|---|
| TEXAS INSTRUMENTS DEUTSCHLAND GMBH | FREISING | 316 |
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Meier, Herbert | Moosburg, DE | 41 | 1299 |
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,550,444 Facility for intermittent transmission of information between guideway wayside equipment and vehicles moving along the guideway | 33 | 1983 | |
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| 2005/0199,724 Diffractive optical variable image including barcode | 2005 | ||
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| 5,302,954 Identification apparatus and methods | 63 | 1992 | |
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| 4,912,471 Interrogator-responder communication system | 149 | 1983 | |
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| 5,053,774 Transponder arrangement | 335 | 1991 | |
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| 5,351,052 Transponder systems for automatic identification purposes | 195 | 1993 | |
Patent Citation Ranking
Forward Cites
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 7,239,226 System and method for payment using radio frequency identification in contact and contactless transactions | 58 | 2002 | |
| 7,249,112 System and method for assigning a funding source for a radio frequency identification device | 48 | 2002 | |
| 7,668,750 Securing RF transactions using a transactions counter | 1 | 2004 | |
| 7,268,667 Systems and methods for providing a RF transaction device operable to store multiple distinct accounts | 11 | 2004 | |
| 7,268,668 Systems and methods for managing multiple accounts on a RF transaction instrument | 9 | 2004 | |
| 7,360,689 Method and system for proffering multiple biometrics for use with a FOB | 10 | 2004 | |
| 7,303,120 System for biometric security using a FOB | 44 | 2004 | |
| 7,154,375 Biometric safeguard method with a fob | 37 | 2004 | |
| 7,121,471 Method and system for DNA recognition biometrics on a fob | 24 | 2004 | |
| 7,059,531 Method and system for smellprint recognition biometrics on a fob | 13 | 2004 | |
| 7,172,112 Public/private dual card system and method | 41 | 2004 | |
| 7,639,116 Converting account data associated with a radio frequency device | 1 | 2004 | |
| 7,725,427 Recurrent billing maintenance with radio frequency payment devices | 0 | 2004 | |
| 7,119,659 Systems and methods for providing a RF transaction device for use in a private label transaction | 38 | 2004 | |
| 7,493,288 RF payment via a mobile device | 36 | 2004 | |
| 7,228,155 System and method for remotely initializing a RF transaction | 51 | 2004 | |
| 7,705,732 Authenticating an RF transaction using a transaction counter | 4 | 2004 | |
| 7,312,707 System and method for authenticating a RF transaction using a transaction account routing number | 39 | 2004 | |
| 7,746,215 RF transactions using a wireless reader grid | 1 | 2005 | |
| 8,294,552 Facial scan biometrics on a payment device | 0 | 2007 | |
| 8,074,889 System for biometric security using a fob | 2 | 2007 | |
| 7,988,038 System for biometric security using a fob | 1 | 2007 | |
| 7,814,332 Voiceprint biometrics on a payment device | 5 | 2007 | |
| 7,637,434 Registering a biometric for radio frequency transactions | 1 | 2007 | |
| 7,578,448 Authorizing radio frequency transactions using a keystroke scan | 1 | 2007 | |
| 7,506,818 Biometrics for radio frequency payment transactions | 8 | 2007 | |
| 7,500,616 Authenticating fingerprints for radio frequency payment transactions | 5 | 2007 | |
| 8,289,136 Hand geometry biometrics on a payment device | 0 | 2007 | |
| 8,284,025 Method and system for auditory recognition biometrics on a FOB | 0 | 2007 | |
| 8,279,042 Iris scan biometrics on a payment device | 0 | 2007 | |
| 7,690,577 Registering a biometric for radio frequency transactions | 1 | 2007 | |
| 7,506,819 Biometric security using a fob | 6 | 2007 | |
| RE43157 System and method for reassociating an account number to another transaction account | 3 | 2008 | |
| 7,886,157 Hand geometry recognition biometrics on a fob | 0 | 2008 | |
| RE43460 Public/private dual card system and method | 0 | 2009 | |
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| 8,429,041 Systems and methods for managing account information lifecycles | 0 | 2003 | |
| 7,306,158 Clear contactless card | 4 | 2003 | |
| 7,827,106 System and method for manufacturing a punch-out RFID transaction device | 1 | 2003 | |
| 7,925,535 System and method for securing RF transactions using a radio frequency identification device including a random number generator | 1 | 2004 | |
| 7,093,767 System and method for manufacturing a punch-out RFID transaction device | 45 | 2004 | |
| 7,070,112 Transparent transaction device | 40 | 2004 | |
| 7,542,942 System and method for securing sensitive information during completion of a transaction | 8 | 2004 | |
| 7,503,480 Method and system for tracking user performance | 4 | 2004 | |
| 7,463,133 Systems and methods for providing a RF transaction device operable to store multiple distinct calling card accounts | 2 | 2004 | |
| 7,835,960 System for facilitating a transaction | 5 | 2004 | |
| 7,768,379 Method and system for a travel-related multi-function fob | 0 | 2004 | |
| 7,762,457 System and method for dynamic fob synchronization and personalization | 2 | 2004 | |
| 7,587,756 Methods and apparatus for a secure proximity integrated circuit card transactions | 3 | 2004 | |
| 7,805,378 System and method for encoding information in magnetic stripe format for use in radio frequency identification transactions | 1 | 2004 | |
| 7,996,324 Systems and methods for managing multiple accounts on a RF transaction device using secondary identification indicia | 0 | 2004 | |
| 7,156,301 Foldable non-traditionally-sized RF transaction card system and method | 33 | 2005 | |
| 7,429,927 System and method for providing and RFID transaction device | 3 | 2005 | |
| 7,543,738 System and method for secure transactions manageable by a transaction account provider | 11 | 2005 | |
| 7,650,314 System and method for securing a recurrent billing transaction | 0 | 2005 | |
| 8,001,054 System and method for generating an unpredictable number using a seeded algorithm | 2 | 2006 | |
| 7,837,116 Transaction card | 2 | 2007 | |
| 7,494,058 Smartcard transaction method and system using voiceprint recognition | 4 | 2007 | |
| 7,694,876 Method and system for tracking user performance | 1 | 2008 | |
| 7,793,845 Smartcard transaction system and method | 2 | 2009 | |
| 8,016,191 Smartcard transaction system and method | 3 | 2010 | |
| 8,266,056 System and method for manufacturing a punch-out RFID transaction device | 0 | 2010 | |
| 8,191,788 Transaction card | 1 | 2010 | |
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| 6,476,709 Transmission of digital data over an A.C. supply line | 6 | 1999 | |
| 6,465,903 Transmission of an operating order via an A.C. supply line | 4 | 1999 | |
| 6,784,785 Duplex transmission in an electromagnetic transponder system | 7 | 2000 | |
| 6,703,921 Operation in very close coupling of an electromagnetic transponder system | 23 | 2000 | |
| 6,650,229 Electromagnetic transponder read terminal operating in very close coupling | 17 | 2000 | |
| 6,547,149 Electromagnetic transponder operating in very close coupling | 8 | 2000 | |
| 6,473,028 Detection of the distance between an electromagnetic transponder and a terminal | 20 | 2000 | |
| 6,650,226 Detection, by an electromagnetic transponder reader, of the distance separating it from a transponder | 21 | 2000 | |
| 7,058,357 Sizing of an electromagnetic transponder system for an operation in extreme proximity | 0 | 2000 | |
| 7,049,935 Sizing of an electromagnetic transponder system for a dedicated distant coupling operation | 2 | 2000 | |
| 6,960,985 Adaptation of the transmission power of an electromagnetic transponder reader | 5 | 2001 | |
| 7,049,936 Validation of the presence of an electromagnetic transponder in the field of a reader | 5 | 2001 | |
| 7,005,967 Validation of the presence of an electromagnetic transponder in the field of an amplitude demodulation reader | 1 | 2001 | |
| 6,879,246 Evaluation of the number of electromagnetic transponders in the field of a reader | 3 | 2001 | |
| 7,046,146 Electromagnetic field generation device for a transponder | 4 | 2001 | |
| 7,023,391 Electromagnetic field generation antenna for a transponder | 7 | 2001 | |
| 7,046,121 Detection of an electric signature of an electromagnetic transponder | 2 | 2001 | |
| 7,308,249 Communication between electromagnetic transponders | 4 | 2003 | |
| 7,263,330 Validation of the presence of an electromagnetic transponder in the field of a phase demodulation reader | 2 | 2005 | |
| 8,130,159 Electromagnetic field generation antenna for a transponder | 0 | 2009 | |
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| 6,154,137 Identification tag with enhanced security | 98 | 1998 | |
| 7,044,373 Radio frequency identification systems applications | 33 | 1999 | |
| 6,335,686 Application for a radio frequency identification system | 164 | 1999 | |
| 6,232,870 Applications for radio frequency identification systems | 216 | 1999 | |
| 6,486,780 Applications for radio frequency identification systems | 141 | 2000 | |
| 6,646,554 Identification tag with enhanced security | 45 | 2000 | |
| 6,448,886 Application for radio frequency identification systems | 82 | 2001 | |
| 6,424,262 Applications for radio frequency identification systems | 93 | 2001 | |
| 7,588,185 RFID data collection and use | 9 | 2001 | |
| 6,600,420 Application for a radio frequency identification system | 109 | 2001 | |
| 6,768,419 Applications for radio frequency identification systems | 74 | 2002 | |
| 7,619,529 Application for a radio frequency identification system | 2 | 2003 | |
| 7,123,151 Applications for radio frequency identification systems | 28 | 2004 | |
| 7,113,094 Applications for radio frequency identification systems | 23 | 2005 | |
| 7,270,268 Radio frequency identification systems applications | 24 | 2006 | |
| 7,471,205 Applications for radio frequency identification systems | 5 | 2006 | |
| 8,006,902 Radio frequency identification systems applications | 1 | 2007 | |
| 7,728,732 Applications for radio frequency identification systems | 0 | 2008 | |
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| 8,073,984 Communication protocol for use with portable electronic devices | 0 | 2006 | |
| 7,643,895 Portable media device with workout support | 8 | 2006 | |
| 7,913,297 Pairing of wireless devices using a wired medium | 6 | 2006 | |
| 7,813,715 Automated pairing of wireless accessories with host devices | 9 | 2006 | |
| 7,911,339 Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods | 0 | 2006 | |
| 7,552,031 Personal items network, and associated methods | 5 | 2006 | |
| 7,698,101 Smart garment | 9 | 2007 | |
| 7,627,451 Movement and event systems and associated methods | 16 | 2007 | |
| 7,512,515 Activity monitoring systems and methods | 7 | 2007 | |
| 8,036,851 Activity monitoring systems and methods | 0 | 2009 | |
| 8,374,825 Personal items network, and associated methods | 0 | 2009 | |
| 8,060,229 Portable media device with workout support | 2 | 2009 | |
| 8,099,258 Smart garment | 0 | 2010 | |
| 8,181,233 Pairing of wireless devices using a wired medium | 0 | 2011 | |
| 8,352,211 Activity monitoring systems and methods | 0 | 2011 | |
| 8,346,987 Communication protocol for use with portable electronic devices | 0 | 2011 | |
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| 7,258,276 Radio frequency identification method and system of distributing products | 34 | 2001 | |
| 7,165,720 Radio frequency identification method and system of distributing products | 0 | 2001 | |
| 7,293,705 Radio frequency identification method and system of distributing products | 13 | 2004 | |
| 7,942,321 Radio frequency identification method and system of disturbing products | 4 | 2004 | |
| 7,735,732 Radio frequency identification method and system of distributing products | 4 | 2004 | |
| 7,661,591 RF point of sale and delivery method and system using communication with remote computer and having features to read a large number of RF tags | 5 | 2004 | |
| 7,591,421 Radio frequency identification method and system of distributing products | 11 | 2005 | |
| 7,784,689 Radio frequency identification method and system of distributing products | 5 | 2006 | |
| 7,791,479 RFID point of sale and delivery method and system | 5 | 2006 | |
| 7,710,275 RFID reader enclosure and man-o-war RFID reader system | 6 | 2007 | |
| 8,025,228 RF point of sale and delivery method and system using communication with remote computer and having features to read a large number of RF tags | 1 | 2007 | |
| 7,967,199 Radio frequency identification method and system of distributing products | 1 | 2009 | |
| 8,031,072 RFID reader enclosure and man-o-war RFID reader system | 1 | 2010 | |
| 8,113,425 RF point of sale and delivery method and system using communication with remote computer and having features to read a large number of RF tags | 0 | 2011 | |
| 8,231,053 Radio frequency identification method and system of distributing products | 0 | 2011 | |
| 8,258,961 RFID reader enclosure and man-o-war RFID reader system | 0 | 2011 | |
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| 7,151,455 Activating a data tag by load or orientation or user control | 41 | 2004 | |
| 7,098,794 Deactivating a data tag for user privacy or tamper-evident packaging | 81 | 2004 | |
| 7,336,183 Decommissioning an electronic data tag | 5 | 2005 | |
| 7,701,346 Deactivating a data tag for user privacy or tamper-evident packaging | 4 | 2006 | |
| 7,948,381 Reversibly deactivating a radio frequency identification data tag | 1 | 2006 | |
| 8,138,922 Deactivating a data tag for user privacy or tamper-evident packaging | 1 | 2010 | |
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| 8,440,139 Method of delivering liquid sterilant to a sterilizer | 0 | 2004 | |
| 7,602,284 Sterilizer cassette handling system with data link | 1 | 2004 | |
| 7,309,014 Sterilizer cassette handling system with dual visual code reading | 0 | 2004 | |
| 7,452,504 Sterilization/disinfection cycle control | 0 | 2004 | |
| 7,811,530 Sterilization cassette and packaging | 0 | 2004 | |
| 7,575,716 Sterilization/disinfection cycle control | 0 | 2008 | |
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| 7,640,135 System and method for determining airtime using free fall | 0 | 2007 | |
| 7,693,668 Impact reporting head gear system and method | 1 | 2008 | |
| 8,280,681 Pressure-based weight monitoring system for determining improper walking or running | 2 | 2009 | |
| 7,860,666 Systems and methods for determining drop distance and speed of moving sportsmen involved in board sports | 0 | 2010 | |
| 8,239,146 Board sports sensing devices, and associated methods | 0 | 2011 | |
| 8,396,687 Machine logic airtime sensor for board sports | 0 | 2012 | |
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| 7,151,456 Medicament dispenser | 21 | 2001 | |
| 7,091,864 Sample container with radiofrequency identifier tag | 18 | 2001 | |
| 7,009,517 Method for monitoring objects with transponders | 63 | 2001 | |
| 7,191,777 Medicament dispenser | 14 | 2001 | |
| 7,819,116 Medicament dispenser | 1 | 2007 | |
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| 8,280,682 Device for monitoring movement of shipped goods | 0 | 2001 | |
| 7,174,277 Product integrity systems and associated methods | 44 | 2003 | |
| 7,856,339 Product integrity tracking shipping label, system and associated method | 0 | 2007 | |
| 8,126,675 Product integrity tracking shipping label, and associated method | 0 | 2010 | |
| 8,428,904 Product integrity tracking system, shipping label, and associated method | 0 | 2012 | |
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| 7,286,053 Electronic article surveillance (EAS) tag/device with coplanar and/or multiple coil circuits, an EAS tag/device with two or more memory bits, and methods for tuning the resonant frequency of an RLC EAS tag/device | 9 | 2005 | |
| 7,498,948 Electronic article surveillance (EAS) tag/device with coplanar and/or multiple coil circuits, an EAS tag/device with two or more memory bits, and methods for tuning the resonant frequency of an RLC EAS tag/device | 8 | 2007 | |
| 7,750,792 Multi-mode tags and methods of making and using the same | 7 | 2007 | |
| 8,424,176 Methods of forming tunable capacitors | 0 | 2009 | |
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| 7,366,466 Wireless communication device interconnectivity | 1 | 2002 | |
| 7,623,831 Wireless communication device interconnectivity | 1 | 2006 | |
| 7,536,155 Wireless communication device interconnectivity | 0 | 2006 | |
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| 6,466,650 Telecom service identification transponder apparatus and technique | 4 | 2000 | |
| 6,389,110 Telecom service identification resonator apparatus and technique | 22 | 2000 | |
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| 7,348,875 Semi-passive radio frequency identification (RFID) tag with active beacon | 48 | 2004 | |
| 7,317,382 Remote communications devices, wireless communications systems, and wireless communications methods | 33 | 2004 | |
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| 6,452,504 System and method for communication with radio frequency identification tags using tow message DFM protocol | 13 | 1999 | |
| 6,396,438 System and method for locating radio frequency identification tags using three-phase antenna | 63 | 1999 | |
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| 6,693,511 System and method for communicating with dormant radio frequency identification tags | 45 | 1999 | |
| 6,661,335 System and method for locating radio frequency identification tags | 30 | 1999 | |
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| 7,917,088 Adaptable detection threshold for RFID tags and chips | 3 | 2007 | |
| 8,258,955 Adaptable detection threshold for RFID tags and chips | 0 | 2011 | |
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| 5,621,411 Positioning with RF-ID transponders | 106 | 1996 | |
| 6,167,236 Damping modulation circuit for a full-duplex transponder | 70 | 1997 | |
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| 5,699,066 Synchronized electronic identification system | 55 | 1996 | |
| 6,367,697 Reader arrangement for an electronic identification system having a plurality of reader heads for energizing transponders | 20 | 1998 | |
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| 8,450,877 Communication across an inductive link with a dynamic load | 0 | 2010 | |
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| 6,566,997 Interference control method for RFID systems | 95 | 1999 | |
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| 7,535,362 Circuit arrangement and method for supplying power to a transponder | 1 | 2006 | |
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| 7,015,479 Digital film grain | 10 | 2003 | |
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| 8,219,053 Automatic tuning reader | 0 | 2008 | |
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| 7,239,238 Electronic security seal | 43 | 2005 | |
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| 6,272,320 Base station for a contactless interrogation system comprising a phase locked and voltage controlled oscillator | 15 | 1998 | |
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| 7,307,530 Surgical implement detector utilizing a radio-frequency identification marker | 25 | 2005 | |
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| 5,905,433 Trailer communications system | 88 | 1996 | |
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| 8,407,097 Proximity transaction apparatus and methods of use thereof | 0 | 2004 | |
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| 6,915,108 Signal transceiver | 0 | 2002 | |
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| 5,942,977 Radio transponder | 39 | 1997 | |
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| 7,571,139 System and method for processing financial transactions | 29 | 2000 | |
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| 5,999,091 Trailer communications system | 108 | 1997 | |
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| 7,451,056 Activity monitoring systems and methods | 5 | 2006 | |
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| 6,400,272 Wireless transceiver for communicating with tags | 223 | 2000 | |
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| 7,991,565 System and method for non-wirelessly determining free-fall of a moving sportsman | 0 | 2010 | |
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| 6,034,565 Power amplifier for use in an NMR tomography apparatus | 7 | 1998 | |
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| 6,317,027 Auto-tunning scanning proximity reader | 82 | 1999 | |
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| 7,614,555 RFID sensor array | 5 | 2004 | |
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| 6,448,903 Device for detecting internal pressure of air-filled gunwale protector | 0 | 1999 | |
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| 6,265,973 Electronic security seal | 80 | 1999 | |
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| 5,790,014 Charging a transponder in a security system | 7 | 1997 | |
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| 7,394,383 Closure for a container | 7 | 2005 | |
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| 5,929,780 Method of monitoring and programming a plurality of transponders simultaneously, and apparatus for implementing the method | 10 | 1997 | |
| 8,228,193 Tag having a semiconductor chip and method of attachment to article | 0 | 1999 | |
| 7,298,271 Method and apparatus for providing awards using transponders | 2 | 2005 | |
| 8,217,788 Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods | 0 | 2011 | |
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |