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7583192 |
Radio frequency identification device and method
The present invention teaches a method of manufacturing an enclosed transceiver, such as a radio frequency identification (“RFID”) tag. Structurally, in one embodiment, the tag comprises an...
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7580361 |
Network system, information processor and electronic apparatus
In the present network system, a printer 10 periodically transmits an update request at different timings respectively to an apparatus management PC 30 and to a directory service 50 which are...
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7579989 |
Method and system for emitter localisation
Process and system for the location of emitters in the radar frequency range on the basis of cross position-finding by at least two flying platforms with, in each case, at least one passive HF...
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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...
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7504992 |
Wireless system using continuous wave phase measurement for high-precision distance measurement
A system and method for monitoring topological changes in a defined area. A grid of sensors is arranged in the area, with known distances between them. The sensors communicate wirelessly with a...
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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...
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7369941 |
Collision detection system and method of estimating target crossing location
A collision detection system and method of estimating a crossing location are provided. The system includes a first sensor for sensing an object in a field of view and sensing a first range defined...
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7292822 |
Wireless communication system using surface acoustic wave (SAW) second harmonic techniques
An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends...
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7224308 |
Identification and location system for personnel and vehicles
A surveillance system is provided for surveillance of objects within a secure area. A surveillance sensor transmits surveillance signals to all objects within the secure area, the reflections of...
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7158031 |
Thin, flexible, RFID label and system for use
A radio frequency indentification (RFID) label includes an integrated circuit and an antenna. The label may also include two flexible films directly sealed to each other. The label may be affixed...
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7075476 |
Ultra-wideband smart sensor interface network and method
A network, sensor and method are provided that utilize the capabilities of impulse radio technology to help monitor and/or control the environment within a building. In particular, the network...
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6946952 |
Data carrier for transmitting data with different transmission parameters
A data carrier ( 1 ) for contactless communication with the communication station comprises firstly a reception stage ( 3 ) for receiving an interrogation signal (IS), secondly a generation stage (...
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6864829 |
System for determining a position of a moving transponder
The invention relates to a system for determining a position of a moving transponder adapted to receive a substantially stationary magnetic field signal and to transmit a further signal. The system...
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6774778 |
Tire pressure monitoring device and code learning method therefor
A tire pressure monitoring device, being installed in a motor vehicle having a plurality of tires, includes: a plurality of sensor modules being installed onto the tire and having a wireless...
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6745008 |
Multi-frequency communication system and method
A multi-frequency RFID remote communication system is provided that includes a plurality of RFID tags configured to receive a first signal and to return a second signal, the second signal having a...
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6728629 |
On-road reference point positional data delivery device
The on-road reference point positional data delivery device according to the present invention has a reference point positional data delivery device, and this reference point positional data...
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6717516 |
Hybrid bluetooth/RFID based real time location tracking
Devices having either wireless data communication capability or RFID tags can be located using dual function fixed devices which are distributed throughout a facility. The devices will identify...
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6693581 |
Device for transmitting data in a motor vehicle
A device for data transmission in a motor vehicle and/or from a motor vehicle in its vicinity includes a first transceiver unit in or on the motor vehicle and a second transceiver unit. which is...
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6630900 |
Process for carrying out a non-contact remote interrogation
The invention relates to a system suitable for a remote interrogation of passive transponders using chirp signals for interrogation. The transponder preferably has an encoding unit ( 11 ), a...
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6614385 |
Police activity transponder utilizing a vehicle interface
A police activity transponder utilizes data available through a vehicle on-board diagnostic system or a intelligent vehicle data bus to adjust the sensitivity of the police activity transponder to...
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6462698 |
Wireless communication system using surface acoustic wave (SAW) single-phase unidirectional transducer (SPUDT) techniques
SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated...
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6430479 |
Methods, apparatus and computer program products for determining the vertical speed of an aircraft
A method, an apparatus and a computer program product are provided for accurately determining the vertical speed of an aircraft in a manner independent of signals provided by an air data computer,...
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6407695 |
Process for carrying out a non-contact remote enquiry
The invention relates to a system suitable for a remote interrogation of passive transponders using chirp signals for interrogation. The transponder preferably has an encoding unit ( 11 ), a...
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6362772 |
Transponder plot system and method
A system and method for providing remote viewing of satellite transponder plots. The system and method piovides for remote viewing of transponder plots derived from transponders located on a...
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6329944 |
Tag communication protocol & system
A method of communicating to a RF tag having a low power mode and a scan mode with a radar and an interrogator. The method comprises the steps of alternating the RF tag between the low power mode...
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6323804 |
Method and apparatus for GPS time determination
A system for rapidly acquiring a time reference for the location determination of a wireless communication device. The system includes a wireless communication device (200), a GPS satellite (202)...
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6294981 |
Transponder reading device and also control system for controlling the handling of transponder-bearing objects by means of transponder reading devices
A transponder reading device and a control system for controlling the handling and/or processing of transponder-bearing objects by such transponder reading devices. The transponder reading device...
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6288629 |
Method of using write--ok flag for radio frequency (RF) transponders (RF Tags)
A method of sending data from a base station to a passive RF tag and writing the data to a tag non-volatile memory which detects a "partial write", where the tag voltage falls during the write...
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6181272 |
Data communications network
A method (200, 300) and apparatus (100) provides for displaying locally the position and identity of various field operatives or agents who have radio receiver transmitters (20, 30 and 40). A local...
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6177859 |
Radio frequency communication apparatus and methods of forming a radio frequency communication apparatus
A method of forming a radio frequency communication apparatus includes providing a substrate provided with an outermost surface. An RFID is adhered at least partially within the substrate, and the...
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6087973 |
Increased accuracy of range measurement between data link systems
A method for increasing the accuracy of ranging measurements between data link systems is described. The method, actively aided ranging, increases ranging measurement accuracy by decreasing the...
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6072421 |
Moving object high-accuracy position locating method and system
In an automated roadway system having transponders or data-stations spaced at known positions along the roadway, a vehicle mounted system determines the position of a vehicle moving along the...
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5995039 |
Method and apparatus for precise noncoherent doppler tracking of a spacecraft
A method and apparatus are disclosed for making precise velocity measurements of a spacecraft using a two-way noncoherent Doppler tracking system. The received uplink and transmitted downlink...
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5963650 |
Method and apparatus for a customizable low power RF telemetry system with high performance reduced data rate
A customizable data acquisition device (DA) and a data collection system (DCS). The DA is remotely located for attachment to a variety of I/O devices, and uses an RF transceiver with a primary...
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5886393 |
Bonding wire inductor for use in an integrated circuit package and method
An integrated circuit package assembly is disclosed herein and includes at least one integrated circuit chip having a plurality of chip input/output terminals, an arrangement for providing...
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5792337 |
Method and apparatus for detection of corrosion
A method and apparatus for sensing corrosion are provided in which an interrogation unit (14) transmits interrogation pulses and receives responses. A plurality of corrosion sensors (12) are...
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5774047 |
Tire pressure sensing system including improved switch and location indicator
A tire pressure sensing system is disclosed for detecting, transmitting and indicating low tire pressure information to a vehicle operator. One embodiment of the invention includes an improved...
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5748138 |
Synchronous identification of friendly targets
A synchronous communication targeting system for use in battle. The present invention includes a transceiver having a stabilizing oscillator, a synchronous amplifier and an omnidirectional...
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5712630 |
High power moving object identification system
A moving object identification system with a novel coding scheme achieves 75% transmission efficiency. With this system, a transmittable range is expanded. Logical value assignment for residual...
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5682603 |
Start-up method for mobile transceivers, mobile transceivers and fixed transceivers thereof
To provide a communications system to accurately detect when a mobile transceiver has entered an area where communication with a fixed transceiver is possible, and to start-up the internal...
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5640164 |
System for the transmission of information by microwaves and a communication device to be used in such a system
A system for communication by means of microwaves between transponders (3) and a central unit (5) is described. It is primarily characterized by a communication unit (4) for directed communication...
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5627544 |
Data communication method using identification protocol
A protocol is used to coordinate the use of a common communication medium by one or more interrogating commander stations and an unknown plurality of responding responder stations. Each commander...
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5619207 |
Highly accurate RE-ID positioning system
A balanced receive antenna circuit configuration determines an accurate position of a transponder within the antenna field pattern of the reader antenna. The balanced receive antenna configuration...
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5594447 |
Moving target identifying system in a base station radar unit for specifying information about moving targets carrying a mobile station radar unit
A vehicle ID radar system has a simple construction and obtains high identifying performance by making a general identification based on a plurality of responses. There are provided an antenna for...
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5546090 |
Method and apparatus for calibrating antenna arrays
A method and apparatus for calibrating antenna array systems comprising of a portable transponder (118) and a calibration processor (124). Calibration processor (124) generates calibration transmit...
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5543798 |
Method of providing a synchronized data stream suitable for use in a combined FDX and HDX RF-ID system
In a method for transmitting a data message comprising a synchronization section and a data section stored in a transponder device (10) to an interrogating device (12) in full duplex mode. The...
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5543797 |
Supervised personnel monitoring system
The monitoring assembly (10) monitors the location of mobile objects (12), i.e., personnel, within a structure (18). The object (12) carries a transponder (14) which periodically transmits status...
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5541604 |
Transponders, Interrogators, systems and methods for elimination of interrogator synchronization requirement
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...
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5525992 |
Method and system for conserving power in a recognition system
A system and method for avoiding the discharge of a battery or otherwise excessive power consumption by a transponder (14) in the presence of a spurious noise source. In a described embodiment, the...
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5525975 |
Self telemetry fuze transmitter
A self telemetry system for use on missiles that utilizes the existing on board fuze transmitter as a telemetry transmitter.
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