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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...
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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...
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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...
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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...
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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...
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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...
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7342482 |
Communication controller for an active transponder
A method for processing of encoded information by a battery-powered active transponder is disclosed for the application within a transponder system for the wireless payment of road toll having the...
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7339480 |
Power processing interface for passive radio frequency identification system
A power processing interface for a radio frequency identification system is provided. The power processing interface includes a resonance circuit for inducing a first signal transmitted from a...
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7336163 |
Transponder startup control method and interrogator for tire pressure monitoring system
A passive transponder is started up by receiving an interrogation signal and returning a requested response signal. The startup is controlled by an interrogator using a startup control method by...
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7321290 |
Radio tag and system
Passive tags use two antennas with only limited mutual coupling, one of which receives a power/clock field and the other of which receives a data signal. An area-reading antenna, or two or more...
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7315248 |
Radio frequency identification tags for use on metal or other conductive objects
A radio frequency identification (“RFID”) tags that are useful on metal or other conductive surface and to methods for manufacturing the same. In one embodiment, the radio frequency...
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7298272 |
Remote detection employing RFID
A system for remote detection using and RFID system including a transceiver, a transponder and a fuse configured within the transponder. The transceiver is configured to send and receive radio...
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7295115 |
Radio-frequency identification (RFID) tag employing unique reception window and method therefor
A radio-frequency identification (RFID) tag employing a unique reception window and method for operating the tag system provides low-power operation for enhanced tag battery life, while providing...
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7286042 |
Passive communication device and passive access control system
A communication device comprising an internal power source, first and second receiver elements for receiving signals transmitted from the base station, and a processor selectively responsive to a...
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7283037 |
RFID tags adjusting to different regulatory environments, and RFID readers to so adjust them and methods
An RFID tag has an antenna to receive a configuration signal, and a circuit with a controller that can configure the RFID circuit responsive to the configuration signal. Configuring is such that...
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7283036 |
Wireless display device and radio frequency identification system using the same
A wireless display device includes an antenna unit, a processing unit, a display unit, and a power supply unit. The antenna unit is provided for receiving a first electromagnetic wave and a third...
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7272729 |
Data carrier for processing signal stream according to transmission protocols has an active processing circuit and a passive signal processing circuit with power supplies
In a data carrier ( 1 ) and in an integrated circuit ( 5 ), a first signal processing circuit ( 8 ) with a signal-independent power supply is provided for processing a signal stream (SF 1 ) in...
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7262684 |
Efficient RKE energy monitoring strategy
A method is provided for selectively providing power to at least one component of a vehicle-based receiver module for determining the presence and validity of a transmitted RF signal. The RF signal...
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7253719 |
Multi-oscillator clock signals
Methods and apparatus may operate to use multiple oscillators to generate a demodulator clock signal and a modulator clock signal within a radio-frequency identification (RFID) circuit. The...
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7253718 |
Transponder
An identification transponder (IDT) for supplying an identification code to a base station (BS) varies an RF signal transmitted by the base station (BS) in a rhythm that corresponds to the...
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7233256 |
System and method for receiving a signal to trigger a pyroelectric activation system
Activation system includes a reception device for receiving an activation signal (SIGA), and an activation circuit ( 4 ) for activating an electric circuit ( 5 ). A pyroelectric element ( 3 ) is...
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7233242 |
Arrangement and method for setting a transmit power
A transmit antenna ( 3 ) is supplied with energy by a power supply unit ( 2 ). An electrical value characteristic for the transmit power is compared to a comparison value and the length of a time...
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7218204 |
Contactless IC card
A contactless IC card includes a reference voltage circuit, a judging circuit for monitoring a reference voltage that is outputted from the reference voltage circuit, and a power supply...
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7215248 |
Diode receiver for radio frequency transponder
A passive radio frequency transponder (RF tag) having a diode rectifier receiver circuit outside the tag power rectification circuit, the tag power rectification circuit supplying power to the...
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7212123 |
Detector
A detector for detecting the presence of a memory tag, the detector comprising a radio frequency source operable to generate a radio frequency signal and a detector resonant circuit part connected...
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7180403 |
RFID reader utilizing an analog to digital converter for data acquisition and power monitoring functions
A reader for an RFID system includes an internal power source, a signal generator for generating a detection signal containing analog data and an excitation signal, a transmitting antenna for...
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7176812 |
Wireless blade monitoring system and process
The present invention can be generally described as a blade monitoring and wireless communications system. This monitoring and communications system is formed by the integration of commonly...
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7176784 |
Multi-mode radio frequency device
A transponder device having multiple modes of operation, such as an active mode and a passive mode, wherein the modes of operation are selected in response to the strength of a received radio...
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7164344 |
Non-contact IC card reading/writing apparatus
A non-contact IC card reading/writing apparatus having a superior reception characteristic includes a loop antenna, a resonant circuit unit, a wireless transmitting unit, and a wireless receiving...
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7158009 |
Electronic circuit for contactless tag, and contactless tag
An electronic circuit for a contactless tag includes a transceiving device having an antenna coil and a circuit changeover switch that switching between a state where the antenna coil forms a...
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7151437 |
Radio communication system and method, radio communication apparatus and method, and program
A memory control unit reads pieces of bit data to be checked by a check pulse to be received next by an antenna, the pieces of bit data being stored in a memory and forming unique data. The memory...
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7126493 |
Utility meter with external signal-powered transceiver
An arrangement for use in a utility meter includes a non-volatile memory and an RF transceiver. The non-volatile memory has a first and a second port, the first port configured to obtain commodity...
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7123129 |
Modulation of the resonant frequency of a circuit using an energy field
A transponder has a resonant RLC circuit with one or more electromagnetic energy storage components that vary in response to an externally applied modulating energy field. In addition to the...
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7106175 |
Wireless communication devices configurable via passive tags
A wireless communication device which includes a passive radio-frequency (RF) tag having a memory for receiving and storing initial configuration information utilized by the device. The initial...
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7106173 |
Tags, wireless communication systems, tag communication methods, and wireless communications methods
Tags, wireless communication systems, tag communication methods, and wireless communications methods are described. In one aspect, a tag includes a plurality of antennas configured to receive a...
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7098770 |
Contactless integrated circuit reader
The present invention relates to a contactless integrated circuit reader operating by inductive coupling, comprising an antenna circuit for sending an alternating magnetic field, circuits for...
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7089157 |
Measuring device, including at least a sensor, capable of operating in difficult conditions
This invention relates to a measurement device comprising at least one sensor ( 20 ) designed to be installed on a mobile element ( 8 ) free to move with respect to a base ( 14 ), the mobile...
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7079034 |
RFID transponder for a security system
An RFID transponder for use in a security system based upon RFID techniques. The RFID transponder may be connected to an intrusion sensor. Example intrusion sensors are magnetically sensitive relay...
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7071838 |
Coupling signals via a coupling arrangement
A power supply controller has two control units for coupling to primary and secondary sides of controlled power supplies, the units being coupled via a transformer which couples signals between the...
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7057522 |
Adjustment device and method for adjusting a seat window lift or sliding roof of a motor vehicle
The invention relates to an adjustment device, actuated by an external force, for adjusting a seat or a window lift of a motor vehicle. Said device comprises an adjustment drive, a control device...
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7012504 |
Wireless identification device, RFID device with push-on/push off switch, and method of manufacturing wireless identification device
A wireless identification device including a housing; circuitry in the housing configured to provide a signal to identify the device in response to an interrogation signal; and a selectively...
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7005967 |
Validation of the presence of an electromagnetic transponder in the field of an amplitude demodulation reader
A terminal for generating an electromagnetic field adapted to communicating with at least one transponder, and a method for controlling such a terminal including: an oscillating circuit adapted to...
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7005966 |
Remote computer controller and control method
A computer system is configured to be powered up by a hand-held controller. The hand-held controller is in wireless communication with a computer. One or more buttons on the hand-held controller...
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6992567 |
Electronic label reading system
An electronic label reading system includes an interrogator including a transmitter and a receiver. The system also has a transmitter antenna connected to the transmitter for generating an...
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6980084 |
Power-on reset for transponder
A power-on reset for a transponder ( 102, 200, 400 ) capable of measuring one or more parameters (e.g., temperature, pressure) in an object (e.g., a tire, 104 ) and transmitting a data stream...
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6975245 |
Real-time data acquisition and telemetry based irrigation control system
A data acquisition and telemetry based control system for use in facilitating substantially real time management of an agricultural irrigation system. The soil moisture sensor includes a reader and...
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6975228 |
Dual mode RFID device
An RFID reader with dual mode capability. A digital signal processor controls an RF source and preamplifier module according to programmed RFID protocols. RF signals received are decoded and...
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6972662 |
RFID (radio frequency identification) and IC card
An RFID which provides a wide working voltage range and general versatility at low cost, without the need for changing its internal circuit design due to external factors. In the RFID, there is...
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6965295 |
Electronic key system operable with charge capacitor power
An electronic key system has a portable electronic key and a transmitter provided in a vehicle. The key and the transmitter have respective LC resonance circuits including antenna coils that can be...
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6963794 |
Locking system for a motor vehicle
A system for automatic access or driving authorization for a motor vehicle includes a first device in the form of a control device having at least two states for engaging and disengaging vehicle...
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