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US20110063085 METHOD FOR DETERMINING OPTIMAL FRAME SIZE FOR TAG COLLISION PREVENTION IN RFID SYSTEM  
The present invention relates to a method for determining an optimal frame size for tag collision prevention in an Aloha-based RFID system in which frame sizes limited to a certain unit are used...
US20140253293 Systems and Methods for Estimation of a Population of Passive RFID Sensors  
Systems and methods for providing an estimate of a population of passive Radio Frequency Identification (RFID) sensors in a coverage area of an RFID reader system are disclosed. In accordance with...
US20120032787 MULTI-PROTOCOL RFID SYSTEM USING DYNAMIC RECONFIGURATION  
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...
US20120249308 METHOD FOR HANDLING COLLISION IN AN IDENTIFICATION SYSTEM  
A method for handling collision in an identification system where the identification system includes a reader, a first transponder and a second transponder. The method involves the reader...
US20150022323 SYSTEMS AND METHODS FOR SYNCHRONIZING A PLURALITY OF RFID INTERROGATORS IN A THEATRE OF OPERATION  
RFID tags are used for many purpose including tracking. RFID interrogators are used to retrieve information from tags. In many applications, a plurality of RFID interrogators are required....
US20110148591 METHODS AND APPARATUS FOR OPERATING A RADIO DEVICE  
A radio device such as a wireless tag reader communicates with multiple types of wireless identification tags in a monitored region. The radio device includes a network interface to receive...
US20100303056 PROBABILITY TIME DIVISION MULTIPLEXING POLLING METHOD AND WIRELESS IDENTIFIER READER CONTROLLER THEREOF  
Exemplary embodiments of the present invention illustrate a probability time division multiplexing polling method and a wireless identifier reader controller thereof. The probability time division...
US20130009754 COLLISION RESOLUTION PROTOCOL FOR MOBILE RFID TAG IDENTIFICATION  
The performance of a radio frequency identification (RFID) system is improved by a protocol that eliminates collisions between signals generated by a) RFID tags that the RFID reader has already...
US20150109108 RFID SYSTEM WITH TIME SLOT INTERLEAVING  
A method for interleaving time slots in a multi-antenna system for communication with RFID tags is disclosed. An example is shown for an eight antenna system. A first four antennas arranged...
US20120280796 RFID SYSTEM WITH TIME SLOT INTERLEAVING  
A method for interleaving time slots in a multi-antenna system for communication with RFID tags is disclosed. An example is shown for an eight antenna system. A first four antennas arranged...
US20140111309 Method for Selecting One or More Transponders  
A method and device for selecting one or more transponders, in particular backscatter-based transponders, from a plurality of transponders by a base station, which method is based on a slotted...
US20060290473 ID tags with Frequency diversity  
A system tracks assets using RFID tags. A plurality of RFID readers use different frequencies to read RFID tags. A plurality of assets each have a RFID tag coupled to them. The RFID tag changes a...
US20110121949 Neighbor discovery techniques  
A system including a number of wireless communication nodes spaced apart from one another. The nodes are structured to transmit and receive unique signatures. A neighborhood of nodes may be...
US20120194321 IC TAG, METHOD OF CONTROLLING THE IC TAG, AND IC TAG SYSTEM  
To provide an IC tag, a method of controlling the IC tag, and an IC tag system which can reduce a communication sequence between the reader/writer and the IC tag and can shorten a communication...
US20110193685 RFID COMMUNICATION SYSTEMS AND METHODS, AND RFID READERS AND SYSTEMS  
A method of coordinating a plurality of RFID readers includes controlling the RFID readers such that only one of the readers performs an inventory of RFID tags at a time. A system for coordinating...
US20120032788 MULTI-PROTOCOL RFID SYSTEM USING BIT-LOCK OR STEP-LOCK SYNCHRONIZATION  
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...
US20110063086 RF TAG READER AND WRITER  
There is provided an RF tag reader and writer including: a transmission antenna configured to transmit a desired signal; a receiving antenna configured to receive radio waves transmitted from an...
US20100271185 BINARY TREE METHOD FOR MULTI-TAG ANTI-COLLISION  
A binary tree method for avoiding collision of multiple tags, comprising: during inventorying tags, a reader sending a re-splitting instruction to the tags and entering a next time slot for...
US20090015381 WIRELESS TAG READER/WRITER ANTENNA  
A wireless tag reader/writer antenna according to an embodiment of this invention includes an antenna unit that incorporates a reader/writer antenna for transmitting and receiving electromagnetic...
US20110263297 METHOD AND APPARATUS FOR CONTENTION RESOLUTION OF PASSIVE ENDPOINTS  
An approach is provided for contention resolution of passive endpoints. A contention resolution platform causes, at least in part, scanning of a data channel of a passive endpoint at a first...
US20150235062 SYSTEMS AND METHODS FOR COLLISION AVOIDANCE IN A MULTIPLE RFID INTERROGATOR ENVIRONMENT  
A method for collision avoidance in a multi-reader environment comprising a plurality of Radio Frequency Identification (RFID) interrogators, the method comprises each of the plurality of...
US20110307305 MULTI-PROTOCOL ELECTRONIC TOLL COLLECTION SYSTEM  
A system and method for dynamically selecting a communication protocol in an electronic toll collection system. A reader includes two or more multiprotocol transceivers operating under the control...
US20130127598 COMMUNICATION CONTROL METHOD FOR RFID READER  
Provided is a communication control method for a radio-frequency identification (RFID) reader, which communicates with a plurality of RFID tags, the communication control method including: (a)...
US20110018691 RFID INTERROGATOR HAVING COLLISION TYPE IDENTIFICATION FUNCTION AND CONTROL METHOD THEREOF  
Disclosed is an RFID interrogator having a collision type identification function and a control method thereof. It verifies whether or not a collision occurs in a received signal by analyzing data...
US20120169475 SYSTEMS FOR AND METHODS OF ASSIGNING PRIORITY TO READER ANTENNAE  
Methods, systems, and articles of manufacture for assigning priority to antennae are disclosed. In accordance with a preferred embodiment of the invention, reader antennae identify the location of...
US20130222118 METHOD OF PREDICTING TAG DETECTION PROBABILITY FOR RFID FRAMED SLOTTED ALOHA ANTI-COLLISION PROTOCOLS  
The method of predicting tag detection probability for RFID framed slotted ALOHA anti-collision protocols is uses recursive calculations to accurately estimate the probability of discovering RFID...
US20130015957 SYSTEMS AND METHODS FOR PROVIDING QUALITY OF SERVICE TO RFID  
Embodiments of the present invention include systems and methods for providing Quality of service to RFID. In one embodiment the present invention includes a method of providing quality of service...
US20090027169 TRANSMITTER/RECEIVER FOR RADIO COMMUNICATION, RFID SYSTEM AND RECEIVING METHOD FOR TRANSMITTER/RECEIVER FOR RADIO COMMUNICATION  
A transmitter/receiver for radio communication according to an embodiment of the present invention has: a transmission circuit for generating a transmission signal; a demodulation circuit for...
US20130234831 RFID TAG INTERROGATION SYSTEMS  
We describe an RFID tag reading system comprising a plurality of transmit/receive antennas to provide spatial transmit/receive signal diversity, and a tag signal decoder. The system combines...
US20120256732 SYSTEMS, METHODS, AND DEVICES FOR COMMISSIONING WIRELESS SENSORS  
In one embodiment the present invention comprises a smartphone and encoders for commissioning RFID transponders. The present invention further includes novel systems, devices, and methods for...
US20100207737 TDMA CONTROL METHOD USED BY RFID READER VIA MOBILE PHONE BASE STATION AND MOBILE RFID READER  
A time division multiple access (TDMA) control method used by a mobile radio frequency identifier (RFID) reader through a mobile phone base station and a mobile RFID reader are provided. Each...
US20150213293 RADIO FREQUENCY IDENTIFICATION READERS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR ADJUSTING A QUERY COMMAND SLOT-COUNTER PARAMETER Q  
RFID readers and methods for adjusting a query command slot-count parameter Q for use by radio frequency identification (RFID) tag reader in an RFID tag inventory round are provided. A method for...
US20070236331 Preventing timeout of RFID tag in timed state of air-interface protocol  
An RFID tag can have a state diagram with a timed state that automatically expires after a timeout time. RFID reader systems, software, tags, circuits and methods are provided that send an interim...
US20060170534 Optimizing an interrogation of a tag population  
Embodiments of the present invention provide a method and system for optimizing an interrogation of a tag population that includes a plurality of tags. The method includes defining a number of...
US20130257598 INTERFERENCE DETECTION AND MITIGATION IN RFID READERS AND SYSTEMS  
One embodiment of the present invention includes a Radio Frequency Identification (RFID) reader configured to detect radio frequency (RF) interference in and/or outside a band of RFID operation....
US20060176152 RFID power ramping for tag singulation  
A preferred embodiment is directed to a method of RFID power ramping for tag singulation that includes activating the trigger control of an RFID reader for engaging power to begin reading RFID...
US20100182128 TAG IDENTIFICATION METHOD, TAG ANTICOLLISION METHOD, RFID TAG  
Provided is a tag identification method in an RFID system. A tag identification method generates a query tree according to a query and a response between an RFID reader and a tag to identify the...
US20070046435 Biologically modeled RF ID tags  
RFID tags include circuitry operable to receive an input signal from a common transceiver and generate at least first and second signals, a first signal adapted to transmit information to the...
US20120293307 RFID systems having improved read rates for localization and proximity detection  
We describe RFID systems for localization and proximity detection and with improved read rates. The systems include three components, (a) RFID readers, (b) passive and/or semipassive tags, (c)...
US20120068830 Physical Layer Management Using RFID Modules and Common Mode Signaling  
An intelligent network patch field management system is provided that includes active electronic hardware, firmware, mechanical assemblies, cables, and software that guide, monitor, and report on...
US20050237159 RFID tag systems, RFID tags and RFID processes with reverse link burst mode  
A process is disclosed for exchanging data between one or more RFID tags and an interrogation unit comprising transmitting a burst of data from the one or more RFID tags.
US20070273484 Method of and reader for automatic synchronization of reader wakeup signals to radio tags  
A method for synchronizing wakeup signals transmitted by a plurality of readers to at least one radio tag includes monitoring, by a first reader, for a first wakeup signal transmitted by a second...
US20070139162 Dense reader system with improved listen before talk communications  
Methods, systems and apparatuses for RFID readers forming a reader network are described. In an aspect of the present invention, readers communicate according to a “Listen Before Talk” (LBT)...
US20060071758 Adaptively adjusting a query parameter Q used for inventorying RFID tags  
RFID system components, such as readers and tags, communicate where the reader inventories a population of tags. The reader evaluates responses from tags by categorizing them in slots. As tags are...
US20070052524 Interrogator used in RFID system  
In RFID system having a plurality of reader/writers, the interface between the reader/writers can be reduced without any degradation of communication throughput. The plurality of reader/writers...
US20080211638 ELECTRONIC TAG AND ELECTRONIC TAG SYSTEM  
An electronic tag comprises a unit for storing transmission-use data and a unit for both comparing between the stored data and comparison data sent from an R/W and for determining whether or not...
US20120092136 Radio frequency identification system and tag counting ending method for anti-collision thereof  
The present invention provides a radio frequency identification (RFID) system and a tag counting ending method for anti-collision thereof. The RFID system comprises a reader-writer and tags. The...
US20050068156 [RELIABLE METHOD OF DETERMINING TAG BINARY IDENTIFICATIONS]  
A method of determining tag identifications is discloses. The method comprises: providing an index signal; receiving a responsive signal generated from tag matching the index signal; obtaining an...
US20070096877 Method for estimating number of tags in slotted aloha-based RFID system  
Provided is a method for estimating the number of tags in a slotted Aloha-based RFID system, which can estimate the number of tags through a new statistical average scheme using the number of...
US20100109848 METHOD AND APPARATUS TO DETECT TRANSPONDER TAGGED OBJECTS, FOR EXAMPLE DURING MEDICAL PROCEDURES  
The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are...

Matches 1 - 50 out of 245 1 2 3 4 5 >