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8183981 |
Passive tag with oscillator circuit and frequency identification system utilizing the same
A passive tag receiving a reader signal provided by a reader is disclosed. The passive tag includes an antenna, an oscillator circuit, and an internal chip. The antenna receives the reader signal....
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8183992 |
Comprehensive status indicator for motor vehicle monitoring system
In a tire sensor monitoring system for a motor vehicle, each of a plurality of tire sensors periodically emits an identifying signal and a parameter signal and the monitoring system receives and...
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8179233 |
UHF timing system for participatory athletic events
A participatory athletic event timing system based on backscattering modulation in the UHF band and including wirelessly encoding writable data tags with participant's bib numbers or a calculated...
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8179232 |
RFID interrogator with adjustable signal characteristics
A radio frequency identification (RFID) interrogator housed in a portable platform that includes at least one antenna, a transceiver for transmitting and receiving a radio frequency (RF) signal...
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8174368 |
Reading method, responder, and interrogator
Transmission and reception of the identification number to/from an interrogator includes an interrogator that reads a recognition number from a responder by radio. When a clock pulse is modulated...
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8174367 |
Causing RFID tags to backscatter more codes
RFID reader systems, readers, components, software and methods for causing RFID tags to backscatter a combination made from at least portions of a first code and a second code stored in tag memory,...
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8174364 |
Automatic means to trigger RFID transmitters
An RFID reader requires significant power supply current, upwards or beyond 0.5 amps. Much of this power is expended to activate the reader's radio frequency transmitter. For example, the reader's...
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8169301 |
RFID tag information communicating apparatus
This disclosure discloses an RFID tag information communicating apparatus, comprising an apparatus antenna device; a command transmission portion that generates and transmits a command signal for...
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8164453 |
Physical audit system with radio frequency identification and method thereof
The present invention relates to a physical audit system with radio frequency identification (RFID) and a method thereof, which perform physical audit by means of RFID. First, a plurality of...
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8164424 |
System and method of integrated processing of electronic tag
A system of electronic tag has developed for integrated processing by utilizing RFID technology, which comprises a reader for collecting information, processor for processing success failure,...
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8164426 |
System and method for producing and distributing digital images including data identifying subjects being photographed
A system and method is provided for taking digital photographs of subjects and for distributing digital images from the photographs according to subject identifiers transmitted from RFID tags held...
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8159367 |
Methods for noise validated phase ranging RFID location
A method and apparatus for validating a distance output of a phase ranging RFID location system, based upon the phase readings included in data sets obtained from monitoring reply signals...
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8154385 |
Local processing of received RFID tag responses
Radio frequency identification (RFID) tags selected for inventorying using combination of preselect and/or post select criteria. The selection commands can be for selecting according to a tag...
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8154389 |
Wireless sensor reader
A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits an excitation pulse to cause the wireless sensor to generate a ring signal. The...
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8154408 |
Methods and systems for identifying stacked sets and locating and tracking stacked sets
One embodiment of the present invention is a method for determining when a set of RFID tags on a set of stacked objects belongs to a same defined subset of stacked objects (“set i...
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8154388 |
Synchronous-phase contactless demodulation method, and associated demodulator and reader
A method of demodulating signals of an electromagnetic field induced by a contactless transponder includes a step in which the signals from the transponder are detected at given times or frequency....
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8149120 |
Temporary non-responsive state for RFID tags
A radio frequency identification (RFID) tag may have a non-responsive mode, triggered by a command from an RFID reader, that temporarily prevents the RFID tag from responding to a query from any...
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8149094 |
Clustering methods for radio-frequency-identifier networks
Methods and systems of the present invention are directed to clustering RFID-tag readers of a multi-RFID-tag-reader network in order to obtain a set of RFID-tag readers with high probability of...
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8149091 |
Radio-frequency tag communication device, radio-frequency tag communication system, and radio-frequency tag detecting system
A radio-frequency tag communication device permitting a radio-frequency tag communication system to have a sufficiently large area of communication, with a minimum required number of interrogators....
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8149093 |
System and method for wireless communications
A method of detecting position of a moving RFID tag relative to an antenna, includes continually receiving a signal from the RFID tag at the antenna. The phase of the received signal over a time...
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8149121 |
Wireless identification tag
The present invention is aimed at providing a wireless identification tag which can save information with high reliability that is free from the possibility of being lost or falsified, is not...
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8143998 |
Noncontact IC card communication system and communication method
Communication processing is performed so as to correspond to multiple types of contactless IC cards having different specifications, such as command classes and security algorithms. Without...
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8138892 |
Variable frequency tag
An antenna assembly is operative for receiving interrogating radiation at a variable frequency tag and generating a corresponding received signal, and for receiving a signature signal and radiating...
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RE43242 |
Communication system, interrogators and communication methods
The present invention includes backscatter communication systems, interrogators, methods of communicating in a backscatter system, and backscatter communication methods. According to one aspect of...
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8134451 |
RFID tag chips and tags capable of backscattering more codes and methods
RFID tags and chips for RFID tags store a first code and a second code in memory. They are capable of backscattering a combination made from at least portions of the first code and the second code,...
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8130103 |
Method of reducing power consumption of a radio badge in a boundary detection localization system
A method of reducing power consumption of a radio badge in a boundary detection localization system is disclosed, in which the radio badge is carried by a tracked target and performs location...
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8130081 |
Data management for intermittently connected sensors
A computer implemented method, apparatus, and computer usable program code for managing data on an intermittently connected sensor. A data management system manages the data on radio frequency...
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8130079 |
Methods, systems, and products for discovering electronic devices
Methods, systems, and products are disclosed for controlling an electronic device. A query is received at a remote control interface. A response to the query is determined. A random response...
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8125317 |
Portable device for caching RFID tag and method thereof
A portable device includes an RFID reader for detecting a tag information of an RFID tag, a memory for storing the tag information detected by the RFID reader, and a controller. When a read command...
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8125313 |
Method for managing mobile operating devices
There is described a method for managing mobile operating devices, which are used to operate a machine within an assigned active area. Emergency stop outlets are triggered as a function of status...
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8125316 |
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...
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8120461 |
Automatic data collection device, method and article
A radio frequency identification system comprises a radio-frequency identification substrate and an interrogator. In one embodiment, the radio-frequency identification substrate comprises a...
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8120464 |
RFID reader and method for removing a transmission carrier leakage signal
A radio frequency identification (RFID) reader is provided, having a transmitting circuit that generates a transmitted signal to operate an RFID tag, a receiving circuit that receives a received...
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8120487 |
Power-saving wireless input device and system
A power-saving wireless input device and an associated system are included. The wireless input device comprises an antenna, an RFID transponder, an energy-storing unit, and a sensing unit. The RFID...
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8120469 |
Method and system for tuning an RFID interrogator
A method, apparatus, and system for periodically measuring the level of ambient noise found on a radio frequency channel used by a radio frequency identification interrogator to read radio...
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8115597 |
RFID tags with synchronous power rectifier
The present disclosure provides a power rectifier for a Radio Frequency Identification tag circuit. The rectifier is constructed from a pair of complementary MOS transistors. Gates of the...
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8115595 |
Reader control system
An RFID reader control system and method is provided. A protocol for controlling an RFID reader and an RFID reader control unit of a mobile phone is defined. Messages, information, commands,...
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8115630 |
Coherent multichip RFID tag and method and apparatus for creating such coherence
An RFID tag (10), containing at least two independent microscopic RFID chips (16) or microradios is programmed with the same unique identifier for each chip. The unique identifier is used in the...
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8115596 |
Method and system for controlling distant equipment
A method and system for controlling distant equipment. A passive radio frequency identification (RFID) tag within a Programmable Secure Remote Controller (PSRC) receives a radio frequency (RF)...
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8115604 |
Reader control system
An RFID reader control system and method is provided. A protocol for controlling an RFID reader and an RFID reader control unit of a mobile phone is defined. Messages, information, commands,...
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8116681 |
Adaptive inductive power supply with communication
An adaptive inductive ballast is provided with the capability to communicate with a remote device powered by the ballast. To improve the operation of the ballast, the ballast changes its operating...
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8111137 |
RFID tag reader/writer
An RFID tag reader/writer having a high degree of stability of communication with only a desired RFID tag. The frequency of a carrier wave to be transmitted from the RFID tag reader/writer is set...
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8111140 |
Transponder load modulation
An electromagnetic transponder and a method for controlling by pulse trains a switch for modulating the load of this transponder in an electromagnetic field from which it extracts its power supply,...
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8106767 |
Wireless tag communication system and image forming apparatus
An antenna outputs query signals to a wireless tag, and receives response signals output from the wireless tag. An intensity detection circuit detects the signal intensity of the response signals....
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8100335 |
Method and system for system administration using radio frequency identification
A method for performing system administration using radio frequency identification (RFID) is disclosed. In one embodiment, the method includes detecting a radio frequency identification device,...
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8102244 |
Methods and apparatuses to identify devices
An apparatus and method to identify devices including a first set of commands to identify devices in a first state and a second set of commands to identify devices in a second state, wherein...
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8102267 |
Single antenna single reader system and method for locating a tag
A single antenna single reader (SASR) system and method for locating a tag. The reader connects to a single antenna that is in motion. The reader transmits an interrogation signal to the tag. The...
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8098136 |
Integrated switch systems and methods for locating identification tags
Integrated switch systems and methods for locating ID tags are disclosed. One system includes an application, a plurality of different tag readers in communication with the ID tags, and an...
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8098139 |
Test head device
There is disclosed a test head device for testing the functionality of a large number of RFID chips arranged in smart labels (17) within a smart label production apparatus by means of a data...
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8093989 |
Method and system for scheduling multi-radio-frequency-identification-tag-reader networks to increase interrogation efficiency
Methods and systems of the present invention employ perturbation techniques for configuring RFID-tag-reader networks in order to achieve increased overall efficiency of a network of RFID-tag...
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