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| Number | Title | Issue Date |
| 8188840 | Authenticating method and identification system An authenticating method includes enabling a transponder to receive a read request that contains an authentication code, enabling the transponder to extract the authentication code from the read request, enabling the transponder to generate and wirelessly transmit a... | 05/29/2012 |
| 8183982 | System including reply signal that at least partially overlaps request A system including a receiver and a transmitter. The receiver is configured to transmit a request. The transmitter is configured to transmit a reply signal that at least partially overlaps the request. ... | 05/22/2012 |
| 8183983 | Method for the at least temporary activation of bidirectional communication and transponder A method for the at least temporary activation of bidirectional communication between a transponder having a nonvolatile memory area and a base station, whereby the transponder in an at least partial mute state receives messages, but no information-related data from... | 05/22/2012 |
| 8174366 | Interrogator and interrogation system employing the same An interrogator, methods of discerning the presence of an object, and interrogation systems employing the same. In one embodiment, the interrogation systems include multiple interrogators that communicate with a base command unit to track a location of an object. In... | 05/08/2012 |
| 8159331 | Method and system for radiated power control for short range RFID tag reading A method and system for power control for Radio Frequency Identification (RFID) tag reading is provided. The system includes a power amplifier for providing an RF transmit signal for the RFID tag reading. The RF transmit signal is provided to an antenna for radiatin... | 04/17/2012 |
| 8143997 | System for self-service checkout inventory control A system for providing self-service inventory control comprises at least one RFID antenna mat placed adjacent to a cart with the RFID antenna transmitting and receiving information from a plurality of passive RFID tags within the cart, a connector unit attached to t... | 03/27/2012 |
| 8106743 | Electronic apparatus, remote controller and remote control system An electronic apparatus is remotely controlled based on a remote control signal transmitted from a remote controller using radio wave. The electronic apparatus contains a communication module that receives the remote control signal transmitted from the remote contro... | 01/31/2012 |
| 8093990 | Far field RFID reader with blocking A far field radio frequency identification (RFID) reader includes a baseband processing module, a transmitter section, and a receiver section. The receiver section includes a low noise amplifier module, a down conversion module, and a current mode blocking circuit. ... | 01/10/2012 |
| 8035487 | Method for assembling, identifying and controlling a powered surgical tool assembly assembled from multiple components A surgical tool system comprising a control console, a powered surgical device, an intermediate attachment removably connected to the surgical device and a cutting accessory removably connected to the intermediate attachment. Internal to the cutting accessory is an ... | 10/11/2011 |
| 8013715 | Canceling self-jammer signals in an RFID system A device and method for canceling one or more self-jammer signals in a radio-frequency identification system. ... | 09/06/2011 |
| 7994899 | Information access system and method for accessing information in contactless information storage device In an information access system, a first reader/writer device cyclically transmits an information request signal at a first frequency in a first period and goes into an inactive state in a second period, and a second reader/writer device cyclically transmits an info... | 08/09/2011 |
| 7978051 | RFID interrogator device An RFID interrogator device has a transmission section for transmitting a command to an RFID tag and a reception section for receiving an RF signal from the RFID tag and is configured to perform backscatter radio communication with the RFID tag. The RFID interrogato... | 07/12/2011 |
| 7969283 | RFID tag information communicating device The RFID tag information communicating device is provided with a cartridge constructed in such a manner that a plurality of RFID circuit elements are stored and can be sequentially taken out therefrom, and an antenna for performing transmitting/receiving operations ... | 06/28/2011 |
| 7952466 | Method and system for protecting RFID tags on purchased goods A method for controlling access to data contained within a radio frequency identification (RFID) tag associated with an item includes reading the RFID tag; receiving a first value from a personal communication device associated with a purchaser of the item; creating... | 05/31/2011 |
| 7880588 | Resistive and capacitive modulation in an electromagnetic transponder The selection of at least one back-modulation element of an electromagnetic transponder from among a plurality of resistive and/or capacitive modulation elements of the load of an oscillating circuit of the transponder, including selecting the modulation element(s) ... | 02/01/2011 |
| 7852197 | System and method for inhibiting detection of deactivated labels using detection filters having an adaptive threshold A method, system and computer program product for inhibiting detection of deactivated tags. The method, system and computer program product include receiving a signal that includes environment noise from at least one tag, extracting signal detection information that... | 12/14/2010 |
| 7834742 | Method of inventorying transponders by means of a communication station In a method of inventorying a plurality of transponders (2) by means of a communication station (1) communicating with the transponders (2) in contactless manner, the communication station (1) emits an unmodulated carrier signal (NMCS) in... | 11/16/2010 |
| 7808367 | RFID material tracking method and apparatus A method and apparatus for tracking items automatically is described. A passive RFID (Radio Frequency IDentification) tag is used with a material tracking system capable of real-time pinpoint location and identification of thousands of items in production and storag... | 10/05/2010 |
| 7733217 | Method for data transmission in RFID or remote sensor systems A method and apparatus for transmitting data in a radio frequency identification system, which includes a reader and at least one transponder, is provided. The reader transmits data sequences to the transponder including at least command data, associated check data,... | 06/08/2010 |
| 7642897 | Cooperative vehicular identification system Cooperative Vehicular Identification Systems and Methods, capable of monitoring and recording vehicular law violations, with the assistance and cooperation of the vehicles in violation, are disclosed. Real-time information from vehicular sensors is communicated to a... | 01/05/2010 |
| 7609147 | Method and apparatus for improving wireless data transmission A method and apparatus includes at least one transponder or sensor to transmit useful data in an asynchronous mode to at least one reader. Before the start of the useful data transmission, the reader transmits a return link header to the transponder or sensor, which... | 10/27/2009 |
| 7605684 | Method and apparatus for determining the direction of movement of RFID tags and for creating constant-width interrogation zones The disclosed inventions relate to a method and apparatus for creating one-sided interrogation zones. The disclosed inventions further relate to a method and apparatus for determining the direction of movement of tagged items that pass by an RFID reader. The disclos... | 10/20/2009 |
| 7573368 | Electromagnetic transponder with no autonomous power supply An electromagnetic transponder comprising: an oscillating circuit; a first rectifying bridge having its A.C. input terminals connected across the oscillating circuit and having its rectified output terminals connected at least to a voltage regulator in charge of pro... | 08/11/2009 |
| 7554433 | Wireless tag scanning system Under the step management of a stepping motor, a move distance of an antenna of a wireless tag scanning device is calculated, and wireless tags are scanned in synchronization with a step move amount. The antenna controls its directivity using shield members etc., an... | 06/30/2009 |
| 7548153 | Multi-protocol or multi-command RFID system A multi-protocol RFID interrogating system employs a synchronization technique (step-lock) for a backscatter RFID system that allows simultaneous operation of closely spaced interrogators. The multi-protocol RFID interrogating system can communicate with backscatter... | 06/16/2009 |
| 7504928 | Wireless tracking system and method utilizing tags with variable power level transmissions The present invention provides a solution to mistaken location calculations based on multipath effects. The present invention utilizes tags attached to objects that transmit signals at various power levels for reception by sensors stationed throughout a facility. Se... | 03/17/2009 |
| 7444118 | Electronic communications system In order that an electronic communications system (100) equipped with: [a.1] at least one base station (10), to which [a.2] at least one LC resonant circuit (13, 16) [a.2.1] with at least one antenna unit (16) in the form of a coil, and [... | 10/28/2008 |
| 7439862 | Antenna array for an RFID reader compatible with transponders operating at different carrier frequencies An antenna array is provided for an RFID reader, which includes a first reader antenna tuned to operate at a first frequency and a second reader antenna tuned to operate at a second frequency different from the first frequency. The first and second antennas are pref... | 10/21/2008 |
| 7436308 | Adjusting RFID waveform shape in view of signal from another reader Systems, software, devices, and methods are described for an RFID reader system to communicate with RFID tags. RF energy encountered in conjunction with using a selected channel is detected. The RF energy can be a signal from another RFID reader. The detected signal... | 10/14/2008 |
| 7436306 | Method and system for checking completeness in a package System and method for checking completeness in a package, which comprises a plurality of objects, which are each provided with at least one electronic information storage medium. The method includes the steps of (a) storing in at least one electronic information sto... | 10/14/2008 |
| 7434731 | Method and apparatus for efficient data transmission from a tag A tag has circuitry with a communication portion that can transmit and receive wireless signals, including wireless transmission of data blocks that each have a predefined configuration with a plurality of data slots. The circuitry includes a further portion that, i... | 10/14/2008 |
| 7432814 | Reconstructing RFID waveform shape for reuse in individual channel Systems, software, devices, and methods are described for an RFID reader system to communicate with RFID tags. RF energy detected in conjunction with using a selected channel is detected and used to adjust a waveform shaping parameter. The waveform shaping parameter... | 10/07/2008 |
| 7421249 | Read-write processing apparatus and method for RFID tag A read-write processing apparatus communicates with an RFID tag provided with a semiconductor memory to exchange commands and responses through antenna coils. A condition under which only a carrier wave is transmitted is set prior to a communication with the RFID ta... | 09/02/2008 |
| 7405660 | Error recovery in RFID reader systems RFID systems, devices, software and methods are adapted for receiving from an RFID tag at least waves that communicate at least a first version of its code. An output tag code is output that is the same as the first version, if a fidelity criterion is met regarding ... | 07/29/2008 |
| 7394370 | Apparatus and method of acquiring and storing data of close contacts A method of recording close contacts for disease control, the method including the steps of using a device to transmit identity and date/time of contact details to a similar device for each close contact. Identity details of the similar device are received and store... | 07/01/2008 |
| 7394377 | RFID edge server with security plug-ins An RFID edge server using an application server allows for improvements in an RFID system. ... | 07/01/2008 |
| 7394350 | Power-saving on-vehicle controller An on-vehicle controller performs smart control for transmitting a transmission request signal to a predetermined area and for unlocking a door of a vehicle based on a return signal transmitted by a portable device receiving the transmission request signal, security... | 07/01/2008 |
| 7388492 | Pallet recycling system, radio tag, pallet, and management method and program A pallet recycling system for managing a pallet to support pallet recycling, comprising: a managing section connected to a network that manages a pallet distribution; a radio tag given to the pallet that records an... | 06/17/2008 |
| 7387235 | Mutual authentication security system with recovery from partial programming Memory contents in an electronic key are re-programmed using a base station from a multi-byte pre-existing or default value. If writing the new secret code value is interrupted and results in a partially-written value then a first recovery code is formed comprising ... | 06/17/2008 |
| 7388469 | Electronic key apparatus for vehicle and arrest cancellation method for rotation arresting device Based upon the results of an ID check with an ignition knob lock device which prevents rotational operation of an ignition knob which is used when stating an engine of a vehicle, and of an ID check with a portable unit, a passive control unit transmits to the igniti... | 06/17/2008 |
