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| Number | Title | Issue Date |
| 8072312 | Contactlessly rechargeable identification device and method thereof A non-contact state charging authentication device and a method thereof are disclosed. The authentication device includes: a power supply for receiving and transmitting power; a control unit for controlling a signal; a shunt and voltage divided circuit connecting to... | 12/06/2011 |
| 8063746 | Transponder detector for an RFID system generating a progression of detection signals A transponder detector is provided with capabilities for detecting the presence and type of a transponder in its read range while operating at low power. The transponder detector includes an antenna assembly and a detection signal generator circuit coupled to the an... | 11/22/2011 |
| 7944338 | RFID tag, RFID reader/writer, RFID system, and processing method of RFID system In an RFID system including RFID tags each incorporating a sensor, accuracy of measurement by the sensor can be improved. For example, when measurements are performed several times by using RFID tags each incorporating a sensor unit, generation of a carrier directed... | 05/17/2011 |
| 7902963 | RFID device having nonvolatile ferroelectric memory device A RFID device has a nonvolatile ferroelectric memory including a memory cell array area supplied only with a high voltage and a peripheral area supplied with a low voltage, thereby reducing power consumption. The RFID device includes an antenna adapted and configure... | 03/08/2011 |
| 7893816 | High sensitivity radio frequency identification tag Systems and techniques for identification of items using radiofrequency identification (RFID) tags exhibiting a high sensitivity to signals such as signals emitted by an RFID reader. An RFID tag includes an amplification circuit operative to detect and amplify a sig... | 02/22/2011 |
| 7800481 | RFID device having a nonvolatile ferroelectric memory A radio frequency identification (RFID) device includes an antenna configured to transmit or receive a radio frequency signal to or from an external communication apparatus; an analog block configured to generate a first power voltage in response to the radio freque... | 09/21/2010 |
| 7746216 | Method and circuit arrangement for holding a control state during inadequate power supply in an RF transponder or remote sensor An RF transponder includes an input circuit, a read/memory circuit, and a circuit arrangement for holding a control state. The circuit arrangement includes a first storage device (e.g. a D-flip-flop) for storing the control state dependent on received control signal... | 06/29/2010 |
| 7671721 | Remote sensor, device and method for activating selected remote sensor components This publication discloses a remote identifier, a reader, and a method for activating a desired remote identifier. The remote identifier (2) includes a microcircuit (7), in which there is a memory and means for processing a radio-frequency signal, an a... | 03/02/2010 |
| 7652557 | Optical transponder containing identification tag A transponder-equipped ID tag is provided, deriving its power from an incoming interrogating optical signal. The invention relates to a transponder-equipped ID tag that is able to extract power from the incident corresponding interrogation signal and temporarily sto... | 01/26/2010 |
| 7612652 | Battery activation circuit A system and method for selectively activating a device based on an activate command. A circuit, in low power mode, listens for an activate command. The activate command includes a preamplifer centering sequence, an interrupt signal, and an activate code. The circui... | 11/03/2009 |
| 7528698 | Multiple antenna energy harvesting Energy harvesting circuits and associated methods are provided that employ multiple antennas to optimize the amount of energy that is harvested while at the same time making efficient use of tag space. In some embodiments, matching networks are chosen in a manner th... | 05/05/2009 |
| 7436286 | Circuit arrangement and method for increasing the functional range of a transponder A transponder receives its operating energy from an external source such as a radio signal or a battery. Such transponders are used for example in a vehicle or in a remote sensor. The response range of the transponder is increased by converting the received energy i... | 10/14/2008 |
| 7432809 | System and method for improving the detection efficiency of an identification system including a transponder and a reader The invention relates to a radio frequency (RF) system and method for improving the detection efficiency of an identification system including a transponder and a reader. The system (1) comprises an interrogator reader device (3) having an inter... | 10/07/2008 |
| 7429913 | Low power digital circuit for RFID tag Provided is a digital circuit for a passive RFID tag. The digital circuit for the passive RFID tag includes a construction that is divided into blocks, which receive a command, analyze and execute the command, and generate a reply signal respectively, according to t... | 09/30/2008 |
| 7427912 | Method and system for storage and recovery of vital information on radio frequency transponders The present invention assures the integrity of state information retained by a Radio Frequency Transponder during a loss of power. During the regular operation of the Transponder power is provided to a voltage-storing device powering an information retention mechani... | 09/23/2008 |
| 7420458 | Secondary card reader A secondary reader and associated system are disclosed. In some embodiments, a secondary reader obtains and communicates information about a reading of an RFID tag by a primary reader by receiving an RFID signal that is responsive to a signal from the primary reader... | 09/02/2008 |
| 7417528 | RFID device having nonvolatile ferroelectric memory device A RFID device has a nonvolatile ferroelectric memory including a memory cell array area supplied only with a high voltage and a peripheral area supplied with a low voltage, thereby reducing power consumption. The RFID device includes an antenna adapted and configure... | 08/26/2008 |
| 7414517 | Radio frequency identification transponder A radio frequency identification transponder includes a power supply and a dynamic memory array that stores data. When power from the power supply ceases, the data in the dynamic memory array is validly maintained for a predetermined period of time. The dynamic memo... | 08/19/2008 |
| 7408463 | Radio frequency identification tag Embodiments of a radio frequency identification tag are generally described herein. Other embodiments may be described and claimed. ... | 08/05/2008 |
| 7388466 | Integrated passive entry and remote keyless entry system A vehicle communication system mounted in the vehicle and a portable fob for carrying by a user are provided. The vehicle communication system comprises a trigger generator, an LF transmitter for broadcasting an LF wakeup signal, and an RF transmitter for broadcasti... | 06/17/2008 |
| 7389089 | Methods to remotely control a wireless unit Methods for remote control of a wireless unit such as remote power-on and remote power-off. An authorized user may send a power-on communication to a remote wireless unit. The power-on communication may be sent by way of an activation system. The wireless unit may b... | 06/17/2008 |
| 7383053 | Position estimation of transceivers in communication networks This invention provides a system and method using wireless communication interfaces coupled with statistical processing of time-of-flight data to locate by position estimation unknown wireless receivers. Such an invention can be applied in sensor network application... | 06/03/2008 |
| 7375637 | Methods and apparatus for reducing power consumption of an active transponder A transponder apparatus having an identifier associated therewith includes a receiver for receiving an RF signal transmitted by an interrogator, a power source and a processing unit that is operatively coupled to the power source and is capable of being in an inacti... | 05/20/2008 |
| 7372359 | Programmable-code electromagnetic transponder An electromagnetic transponder including: a parallel oscillating circuit adapted to extracting a supply signal from a radiated field; in parallel with the oscillating circuit, several branches each including a programmable resistor and a switch; and a cyclic control... | 05/13/2008 |
| 7373133 | Recharging method and apparatus The present invention provides apparatus and an associated method for remotely energizing power storage devices. Energization may preferably be effected through the use of RF energy from a base station, ambient energy or ultra-wide band energy. The remote station pr... | 05/13/2008 |
| 7368827 | Electrical assembly for monitoring conditions in a combustion turbine operating environment An electrical assembly for use in various operating environments such as a casing of a combustion turbine 10 is provided. The assembly may include an electrical energy-harvesting device 51 disposed in a component within the casing of the turbine to con... | 05/06/2008 |
| 7364144 | Sensing and communication system and method A sensing and communication system includes a transceiver broadcasting an electromagnetic wave, a transponder supported on an associated structural member at a distance from the transceiver that receives the electromagnetic wave, and a sensor adjacent the transponde... | 04/29/2008 |
| 7364084 | Integrated circuits with persistent data storage The circuitry introduced in this invention selectively slows down the functioning of an electronic circuit by maintaining a particular state for a prolonged period of time. This circuitry is used not only to achieve the desired effect in maintaining security from el... | 04/29/2008 |
| 7366466 | Wireless communication device interconnectivity A wireless communication device that is attached or included in an electronic object, such as a portable computer, having its own separate communication system. The separate communication system has an antenna for receiving and transmitting wireless communications, ... | 04/29/2008 |
| 7363061 | Information registering and retrieving system, in-vehicle apparatus and portable apparatus When an in-vehicle apparatus receives an information retrieval request from a portable cellular phone along with a phone ID of the cellular phone, a link key is generated in the in-vehicle apparatus based on the phone ID and an apparatus ID of the in-vehicle apparat... | 04/22/2008 |
| 7358848 | Wireless remote sensor An integrated circuit implements a wireless remote sensor. The wireless remote sensor includes an antenna coupled to an energy distribution unit to allow passive collection of electrical charge. A signal processing unit couples to the energy distribution unit and mo... | 04/15/2008 |
| 7359695 | Circuit for a data carrier, which circuit can be switched from an energy-saving processing mode to a normal-consumption processing mode Provided in a circuit (8) for a data carrier (7) are a circuit part (12), which requires a relatively large amount of energy, and at least part of a contact interface (11) via which the circuit part (12) can be supplied with electr... | 04/15/2008 |
| 7355517 | Panel A glass panel has a first sheet glass and a second sheet glass which are disposed so that main surfaces thereof are made to face each other, an interlayer film which joins the first sheet glass and the second sheet glass together and an electronic tag disposed betwe... | 04/08/2008 |
| 7352793 | System and method for ultra wideband communications using multiple code words A method is provided for operating a wireless device. In this method, a first operation is performed on a wireless signal using a first group of wavelets arranged according to a first analog code word format (720). A second operation is then performed on the ... | 04/01/2008 |
| 7352998 | Method and system for establishing a wireless communications link A method and system for establishing a wireless communications link determines, through a first short-range communications link of a first type, whether a remote device is capable of supporting a short-range communications link of a second type. If so, information i... | 04/01/2008 |
| 7348879 | Tire information transmitter and tire information acquisition system using the transmitter A tire information transmitter measures tire inflation pressure in a tire cavity region and wirelessly transmits it outside the tire cavity region. A control unit of the transmitter controls the transmitting of the measured pressure and compares the level of the pre... | 03/25/2008 |
| 7348878 | Tire pressure monitoring system with permanent tire identification A tire pressure management system for a tractor/trailer system uses exterior sidewall mounted tire RFID tags, valve mounted tire pressure sensors and transmitters, radio repeaters, a tire pressure management system receiver with controller area network interface, a ... | 03/25/2008 |
| 7350230 | Wireless security module A wireless security module (20) adapted to authenticate a mobile device (16), such as a mobile telephone, thereby to allow communication between the mobile device and a terminal (12), such as a self-service terminal. The wireless security module... | 03/25/2008 |
| 7347101 | Measuring strain in a structure using a sensor having an electromagnetic resonator The system (10) comprises a sensor (18) 90×90×90×30 mm as an electromagnetic microwave cavity (20) with a coupler (22) with a wire (40) and an antenna (42). Cavity (20) produces a response signal (26) in res... | 03/25/2008 |
| 7343265 | System to monitor the health of a structure, sensor nodes, program product, and related methods A system to monitor the health of a structure, health monitoring sensor nodes, program product, and associated methods are provided. The system includes an array of health monitoring sensor nodes connected to or embedded within a structure to monitor the health of t... | 03/11/2008 |
