SENDER

Die vorliegende Erfindung betrifft einen Sender zum Senden von Signalen in einem Nahfeldkommunikation(NFC)-Frequenzband, umfassend: eine Antenne; eine erste Stromquelle zum Erzeugen eines ersten Stroms zum Anregen der Antenne; einen ersten Detektor zum Erfassen einer ersten Spannung an einem Ausgang der ersten Stromquelle; und ein Mittel zum Verringern des von der ersten Stromquelle ausgegebenen Stroms, falls die erfasste erste Spannung eine erste vordefinierte Schwelle überschreitet. Die Erfindung betrifft auch eine integrierte Schaltung, die einen obigen Sender umfasst.

Bulk radio frequency identification tag reading

WRITE/READ STATION OF A RFID SYSTEM AS WELL AS PROCEDURE FOR THE DETERMINATION AND ATTITUDE OF AN OPTIMAL TRANSMIT CHANNEL AND AN OPTIMAL TRANSMITTING POWER OF WRITE/READ STATIONS IN A RFID SYSTEM

DYNAMIC POWER LEVELS IN NFC CARD COMMUNICATIONS

Various embodiments are directed to dynamically and temporarily adjusting power to an NFC reader of a computing device from a first power level to a second power level based on a feedback mechanism between a contactless card and the computing device. The contactless card may provide a message containing a checksum. The computing device may receive the message and calculate a checksum based on the received message. By comparing these two checksums, it may be determined whether the entire message has been correctly received. If not, the power to the NFC reader may be temporarily increased to allow better communication between the contactless card and the computing device.

A DEVICE, METHOD AND SYSTEM FOR EFFICIENTLY POWERING A NEAR FIELD COMMUNICATION DEVICE

A device, method and system for efficiently powering a near field communication device are provided. The devices comprises: a module configured to: exchange data with a near field communication (NFC) device; and transmit energy to the NFC device; and, a processor configured to: receive, using the module, energy data from the NFC device, the energy data comprising data for determining a difference between a current energy level of an energy storage apparatus at the NFC device and a given amount of energy for performing a given function at the NFC device; determine the difference from the energy data; and, transmit, using the module, an amount of energy corresponding to the difference, to the NFC device.

Thermal printer with quick release cover

SYSTEM FOR INTERROGATING RFID TRANSPONDERS BY FREQUENCY TRANSLATING

ADAPTATION OF the POWER Of EMISSION Of an ELECTROMAGNETIC READER OF TRANSPONDER

L'invention concerne une borne (1') de génération d'un champ électromagnétique propre à coopérer avec au moins un transpondeur lorsque ce dernier entre dans ce champ et comprenant un circuit oscillant (R1, L1, 24) propre à recevoir une tension d'excitation alternative haute fréquence, des moyens de régulation de la phase du signal dans le circuit oscillant par rapport à une valeur de référence, des moyens pour déterminer une information courante relative au couplage magnétique (k) entre le transpondeur et la borne, et des moyens pour adapter la puissance du champ électromagnétique en fonction de cette information courante au moins. The invention relates to a terminal (1 ') for generating an electromagnetic field suitable for cooperating with at least one transponder when the latter enters this field and comprising an oscillating circuit (R1, L1, 24) suitable for receiving a voltage d high-frequency alternating excitation, means for regulating the phase of the signal in the oscillating circuit with respect to a reference value, means for determining current information relating to the magnetic coupling (k) between the transponder and the terminal, and means for adapting the power of the electromagnetic field as a function of this current information at least.

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

TRANSPONDER STARTING CONTROL METHOD AND INTERROGATOR FOR TIRE STATE MONITOR SYSTEM

OPTIMIZING RFID READER DUTY CYCLE OR POWER TO PRESERVE BATTERY LIFE

The duty cycle of a portable battery-powered RFID tag reader is reduced during time periods when it is less likely to produce a "read" in order to preserve battery life. The reader operates with an aggressive duty cycle during periods of a high probability of a tag read and reduces duty cycle during periods of a low probability of a tag read. In this manner a user does not perceive the reader to be sluggish. An alternative embodiment reduces peak operating power during time periods when a tag is less likely to produce a "read" in order to preserve battery life.

Calibration circuit and method of use

A calibration circuit includes a single-wire memory and a transmission line. The single-wire memory includes a power/interrogation terminal and a ground terminal. The single-wire memory is configured to store calibration data for a sensor. The transmission line is configured to be coupled between the sensor and a sensor reader. The transmission line includes first and second conductors. The first conductor is coupled to the power/interrogation terminal and is configured to provide the calibration data and a sensor output signal to the sensor reader. The second conductor is coupled to the ground terminal and is configured to provide a ground reference for the first conductor, the single-wire memory, and the sensor.

Method and System for Reading/Writing Data From/On RFID Tags Integrated/Applied In/On Tires Conveyed on Conveyor Belts

A system and method is provided for reading and/or writing data from/on RFID tags of tires conveyed on a conveyor belt in a conveyance direction, wherein each tire is fitted with a respective RFID tag storing a univocal identifier of said tire. An antenna is installed over or nearby the conveyor belt and configured to radiate RF signals toward a footprint area on the conveyor belt and receive backscattered RF signals from said footprint area. A reader is connected to the antenna to operate the latter in transmission and reception. A preliminary calibration step is applied to the reader and a reading and/or writing step is carried out by operating the calibrated reader. 19-. (canceled)10. A method for reading and/or writing data from/on radiofrequency identification tags of tires conveyed on a conveyor belt in a conveyance direction , wherein each tire is fitted with a respective radiofrequency identification tag storing a univocal identifier of said tire , the method comprising:providing an antenna to radiate radiofrequency signals toward a footprint area on the conveyor belt, and to receive backscattered radiofrequency signals from said footprint area;providing a reader connected to the antenna to operate the antenna in transmission and reception;{'claim-text': ['a1) placing a given tire fitted with a given radiofrequency identification tag on the conveyor belt and keeping said given tire immobile proximate the antenna;', {'claim-text': ['determining a minimum transmission power necessary to activate the given radiofrequency identification tag,', 'determining a calibration transmission power higher than said minimum transmission power, and', 'radiating, via the antenna, calibration radiofrequency signals with said calibration transmission power and receiving, via said antenna, backscattered calibration radiofrequency signals from the given radiofrequency identification tag;'], '#text': 'a2) while the given tire is kept immobile proximate the antenna,'}, 'a3) while ...

IC card reading apparatus and its related method

One purpose is to provide a user friendly IC card reading apparatus conforming to different communication standards. A linear power amplifier supplies an antenna circuit with a power source voltage for Type A which is supplied from a power supply switching circuit when transmitting a radio signal of Type A, while supplying the antenna circuit with a power source voltage for Type B which is supplied from the power supply switching circuit when transmitting a radio signal of Type B, based on the instructions of a CPU. This makes it possible to read out of IC cards of both Type A and Type B.

Remote identification and sensor system

A remote identification and sensor system is provided, wherein compensation for measurement errors due to transponder heat-up is performed. The system comprises an interrogator for transmitting an interrogation signal, a transponder (25) for receiving the interrogation signal, for performing a sensor measurement and for transmitting a response signal in response to the interrogation signal, an antenna (26) for receiving the interrogation signal and for transmitting the response signal in response, a rectifying element (30) connected in series with the antenna (26) for rectifying the interrogation signal, a storage element (32) connected in series with the antenna (26) for storing a predetermined amount of the rectified interrogation signal, a current sensing over-voltage protection circuit (34, 36) connected in parallel with the series combination of the antenna (26) and the storage element (32), comprising a series combination of an over-voltage protection element (34) and a current sensing ...

Protocol for allocation of power signal

Disclosed are methods, systems and devices for allocating a power signal. In one particular implementation, a reader device may exchange messages with one more transponder devices to determine an allocation of a power signal. For example, one or more transponder devices may provide one or more messages in a downlink signal indicative of a requested signal up time.

PROCEDURE FOR THE DECREASE OF THE HF-INTERFERENCE IN A MAP READER WITH DOUBLE INTERFACE AND EQUIVALENT MAP READER WITH DOUBLE INTERFACE

PULSED ACHIEVEMENT SUPPLY PROCEDURE WITH INCREASED READ RANGE FOR A RFID READER

TECHNIQUES TO CONFIGURE RADIO-FREQUENCY IDENTIFICATION READERS

A system, apparatus and method to configure a radio-frequency identification reader may be described. For example, the apparatus may comprise a radio- frequency identification device to store configuration information for a radio- frequency identification reader. Other embodiments are described and claimed.

ADAPTATION OF the POWER Of EMISSION Of a READER OF TRANSPONDEURELECTROMAGNETIQUE

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

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 judging presence or absence of a return of the response signal while monotonically increasing transmission power of the interrogation signal from an initial value by an amount which is made smaller stepwise every time presence of the return is judged and maintaining the transmission power, after presence of the return is judged, at its value as of the time when presence of the return was judged.

RF identification system with restricted range

A method of adjusting the 2-way communication range of an RFID system to assist a human operator to individually handle and interrogate a plurality of tagged objects, such as suitcases, that each include an RFID tag transceiver. An RFID interrogator transceiver is mounted on the human operator. The 2-way communication range between the interrogator transceiver and the tag transceivers is adjusted to only slightly exceed the closest distance between the interrogator and the tag while the operator is handling the tagged object. Preferably, the 2-way communication range is short enough that other tagged objects will remain outside the communication range and will not respond to messages from the interrogator. Another aspect of the invention is a method of verifying whether an object to be transported has reached its intended destination. In this aspect, an interrogator transceiver at a first destination interrogates an RFID tag transceiver on the object, and in response the tag transmits its ...

RFID reader and method for evaluation and adjustment the transmitting channel and power

Die Erfindung betrifft eine Schreib-/Lesestation eines RFID-Systems mit wenigstens einem wählbaren Kanal zur Kommunikation zwischen der Schreib-/Lesestation und wenigstens einem Transponder, die wenigstens eine Sende- und Empfangsantenne (1) aufweist, die mit wenigstens einer Sendeeinheit (8) und mit wenigstens einer Empfangseinheit (7) verbunden ist, wobei die wenigstens eine Sendeeinheit (8) und die wenigstens eine Empfangseinheit (7) mit einer Auswerte- und Steuereinheit (9) verbunden sind, wobei die Schreib-/Lesestation wenigstens eine Analyseeinheit (2) aufweist, wobei die wenigstens eine Analyseeinheit (2) als eine die von der Sende- und Empfangsantenne (1) empfangenen Signale innerhalb eines voreingestellten Frequenzbandes empfangende und hinsichtlich der empfangenen Frequenz und Amplitude auswertende und die so ausgewerteten Signale an eine Ausgabeeinheit übergebende Analyseeinheit (2) ausgebildet ist. Die Erfindung betrifft darüber hinaus ein Verfahren zur Ermittlung und Einstellung eines optimalen Sendekanals und einer optimalen Sendeleistung von Schreib-/Lesestationen eines RFID-Systems.

INFORMATION TERMINAL DEVICE

PROBLEM TO BE SOLVED: To provide an information terminal device capable of selectively reading information of one or more of radio tags which are desired to be read. SOLUTION: In the information terminal device 10 which transmits and receives a prescribed radio wave via at least an antenna 14 and performs information reading processing or information writing processing to radio tags 2-1 to 2-3, the information terminal device 10 comprises a multi-read mode for simultaneously reading the information of a plurality of radio tags 2-1 to 2-3, a mode switch 16 and a memory table 17 selectively setting a single read mode for reading one radio tag 2-1, and an output level control section 12a and a CPU 11 controlling a transmission output level of the single read mode at a lower level compared with the transmission output level of the multi-read mode when a set mode is the single read mode. COPYRIGHT: (C)2006,JPO&NCIPI ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ВОЗБУЖДЕНИЯ ПРИЕМОПЕРЕДАЮЩЕЙ МЕТКИ

FIELD: physics, navigation. SUBSTANCE: wireless location system for location determination for excitation and/or determination of location information to indicate the location of at least one transceiver tag (2) of multiple transceiver tags distributed in the tracking area, at that, the transceiver tags are configured to provide wireless transmission of the identification signal when the exciting electromagnetic signal is present at the transceiver tag location and comprises at least one mobile exciter assembly (4) with a transmitter (24) configured to transmit an electromagnetic signal to excite at least one transceiver tag (2). A mobile exciter assembly (4) is mounted on the mobile device (6). At least one receiver (10) is adapted to receive an identification signal from the transceiver tag, and at least one location evaluation unit (14) is configured to determine the location information using the mobile exciter assembly location (4) and/or signal characteristics of the identification signal received by at least one transceiver tag (2). EFFECT: invention improves the positioning accuracy. 15 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 617 719 C2 (51) МПК G06K 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015140959, 25.09.2015 (24) Дата начала отсчета срока действия патента: 27.02.2012 Дата регистрации: (72) Автор(ы): ОТТО Штефан (DE), НОВАК Торстен (DE), МАЙОРДОМО Икер (DE) Приоритет(ы): (30) Конвенционный приоритет: 27.02.2012 EP PCT/EP2012/053291 2014138983 27.02.2012 (56) Список документов, цитированных в отчете о поиске: US 2009/0195358 A1, 06.08.2009. US 2009/0021351 A1, 22.01.2009. RU 2352995 С1, 20.04.2009. RU 2444049 С2, 27.02.2012. (43) Дата публикации заявки: 30.03.2017 Бюл. № 10 (45) Опубликовано: 26.04.2017 Бюл. № 12 2 6 1 7 7 1 9 R U (54) УСТРОЙСТВО И СПОСОБ ДЛЯ ВОЗБУЖДЕНИЯ ПРИЕМОПЕРЕДАЮЩЕЙ МЕТКИ (57) Формула изобретения 1. Мобильный возбуждающий ...

Sendeleistungsanpassung in einem Leser für elektromagnetische Transponder

Arrangement for, and method of, locating and tracking a mobile target with improved performance in a venue

A system for tracking a mobile target 24 in a venue 10, such as a warehouse or retail environment, comprises multiple target sensing stations 30 deployed overhead at fixed, spaced apart positions so as to sense the mobile target, such as a person, mobile device or shopping cart. A controller actuates an initial station 1 to sense the mobile target and determine a predicted route 100 of the mobile target. A subsequent station 2, 3 is actuated downstream of the initial station prior to the arrival of the mobile target at the subsequent station. A station 4, 5, 6 that is remote from the predicted route is at least partially deactuated, such as by decreasing transmitted power in idle zones 102, 104, 106. Each station may include a video system, a radio frequency identification (RFID) reader and an ultrasonic locating system. The controller may determine the location, direction and speed of the mobile target from the initial station, and use these to predict the route of the target. Subsequent ...

Pulsed power method for increased read range for a radio frequency identification reader

OPTIMIZING RFID READER DUTY CYCLE OR POWER TO PRESERVE BATTERY LIFE

The duty cycle of a portable battery-powered RFID tag reader is reduced during time periods when it is less likely to produce a "read" in order to preserve battery life. The reader operates with an aggressive duty cycle during periods of a high probability of a tag read and reduces duty cycle during periods of a low probability of a tag read. In this manner a user does not perceive the reader to be sluggish. An alternative embodiment reduces peak operating power during time periods when a tag is less likely to produce a "read" in order to preserve battery life.

WIRELESS SMART CARD DETECTION AND SELECTION

Techniques for CSC detection and selection include generating a radio frequency (RF) field that defines a range of communication for the CSC reader, transmitting a signal in the RF field, and detecting a modulation in the RF field indicating that a first CSC is within the RF field and has responded to the signal. The modulation is inspected for collision, wherein collision occurs if more than one CSC within the RF field responds to the poll signal. After determining that the modulation does not contain a collision, a halt command is transmitted to the first CSC instructing the CSC to only respond to one or more specific commands.

MONITORING DEVICE AND METHOD FOR WIRELESS POWER TRANSMISSION IN A MONITORING DEVICE

A monitoring device consisting of a reader and a data carrier, wherein the reader (100) comprises a control unit (101), a memory (102), a digital signal generator (103), an output driver (104), resonance capacitors (105, 107) and a transmitter coil (106), wherein the digital signal generator (103) is adapted for supplying a digital bit sequence selected among, at least two, bit sequences stored in the memory (102) whereby the strength of the magnetic field generated by the transmitter coil (106) can be varied dependent on the bit sequence selected by the control unit (101). The invention further provides a method of controlling the strength of a magnetic field generated by the reader of the monitoring device.

OPTIMIZING RFID READER DUTY CYCLE OR POWER TO PRESERVE BATTERY LIFE

The duty cycle of a portable battery-powered RFID tag reader is reduced during time periods when it is less likely to produce a "read" in order to preserve battery life. The reader operates with an aggressive duty cycle during periods of a high probability of a tag read and reduces duty cycle during periods of a low probability of a tag read. In this manner a user does not perceive the reader to be sluggish. An alternative embodiment reduces peak operating power during time periods when a tag is less likely to produce a "read" in order to preserve battery life.

APPARATUS AND METHOD FOR DELIVERING POWER TO A CONTACTLESS PORTABLE DATA SOURCE

The present invention ecompasses a terminal device and method of powering a portable device therefrom, by transmitting in two modes of operation. In particular, the terminal transmits to the portable data device, in a first mode of operation (201), a power signal at a first level and a data signal using a first modulation format and a first bit rate. The terminal further transmits, in a second mode of operation (205), a power signal at a second level and a data signal using a second modulation format and a second bit rate. The terminal is capable of determining a requirement to change modes of operation (203) and changes modes in response to changing power requirements of the portable data device.

Method and apparatus for accessing information on an external machine-readable tag

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, AND DEVICE OF IMPLEMENTATION

L'invention concerne les procédés qui permettent de moduler en amplitude une porteuse destinée en particulier à interroger une étiquette d'authentification fonctionnant sans contact. Elle consiste à alimenter le transistor de sortie (301) de l'émetteur du signal d'interrogation à l'aide d'une impédance de choc (304) reliée directement à une source d'alimentation, et à commander ce transistor par un signal rectangulaire comprenant des impulsions se succédant à la fréquence de la porteuse et modulées en largeur. Elle permet de diminuer la consommation de l'émetteur, de réduire la tension de la batterie d'alimentation à un minimum et de réduire le nombre de composants.

SYSTEM FOR INTERROGATING TRANSPONDERS RFID

Suivant un aspect, l'invention concerne un système d'interrogation électromagnétique de transpondeurs RFID (300) comprenant au moins un transpondeur RFID (300), au moins un dispositif RFID dit répéteur (200) et au moins une borne RFID (100), l'au moins une borne RFID (100) est configurée pour émettre un signal d'interrogation vers l'au moins un répéteur (200) à une fréquence F1, l'au moins un répéteur (200) est configuré pour répéter ledit signal d'interrogation de fréquence F1 vers l'au moins un transpondeur RFID (300) à une fréquence F2 et l'au moins un transpondeur RFID (300) est configuré pour émettre un signal de réponse rétrodiffusé à une fréquence F3, le système étant caractérisé en ce que l'au moins un répéteur (200) est configuré pour effectuer une transposition uniquement analogique de fréquence depuis la fréquence F1 vers la fréquence F2.

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

System, apparatus and method for exchanging data between a mobile device and an attended or unattended service machine

RF Identification System with Restricted Range

A method of adjusting the 2-way communication range of an RFID system to assist a human operator to individually handle and interrogate a plurality of tagged objects, such as suitcases, that each include an RFID tag transceiver. An RFID interrogator transceiver is mounted on the human operator. The 2-way communication range between the interrogator transceiver and the tag transceivers is adjusted to only slightly exceed the closest distance between the interrogator and the tag while the operator is handling the tagged object. Preferably, the 2-way communication range is short enough that other tagged objects will remain outside the communication range and will not respond to messages from the interrogator. Another aspect of the invention is a method of verifying whether an object to be transported has reached its intended destination. In this aspect, an interrogator transceiver at a first destination interrogates an RFID tag transceiver on the object, and in response the tag transmits its ...

System for interrogating RFID transponders

Disclosed is a system for electromagnetic interrogation of RFID transponders including at least one RFID transponder, at least one so-called repeater RFID device and at least one RFID terminal, the at least one RFID terminal is configured to emit an interrogation signal towards the at least one repeater at a frequency F1, the at least one repeater is configured to repeat the interrogation signal with frequency F1 towards the at least one RFID transponder at a frequency F2 and the at least one RFID transponder is configured to emit a backscattered response signal at a frequency F3, the system being characterized in that the at least one repeater is configured to perform an exclusively analog frequency transposition from the frequency F1 to the frequency F2.

Apparatus for acquiring 3-dimensional maps of a scene

An active sensor for performing active measurements of a scene is presented. The active sensor includes at least one transmitter configured to emit light pulses toward at least one target object in the scene, wherein the at least one target object is recognized in an image acquired by a passive sensor; at least one receiver configured to detect light pulses reflected from the at least one target object; a controller configured to control an energy level, a direction, and a timing of each light pulse emitted by the transmitter, wherein the controller is further configured to control at least the direction for detecting each of the reflected light pulses; and a distance measurement circuit configured to measure a distance to each of the at least one target object based on the emitted light pulses and the detected light pulses.

Reading device, computer program product and reading system

The reader/writer repeatedly reads data, which is stored in an IC tag existing in an area where communication with the reader/writer can be established, from the IC tag in a noncontact method. The reader/writer transmits the read data to the administrative device. The administrative device generates read data which shows the result of reading in chronologic order and generates feature data indicative of the feature of the result of reading on the basis of the generated time series data. An IC tag is sorted as a target tag or an unnecessary tag by sorting the read data as necessary data or unnecessary data on the basis of the generated feature data.

Information processing apparatus

An information processing apparatus according to an embodiment includes a communication control unit controlling communication of a radio communication device with a data carrier transmitting a signal including communication distance information regarding a communication distance; an output variable control unit varying transmission output of the radio communication device; and a data carrier determination unit determining that the data carrier having a short communication distance is valid as the transmission output is large, and determining that the data carrier having a long communication distance is valid as the transmission output is small.

Method and apparatus for RFID tag wherein memory of RFID tag is partitioned into two sections for reading using wireless interface and writing using bus

Methods and apparatus for correlating physical and logical attributes of devices include associating logical-tags (L-tags) and physical-tags (P-tags) with electronic devices. A P-tag includes a P-tag identifier, which can be read by a P-tag reading device, regardless of whether power is applied to the electronic device. In one embodiment, a system includes a P-tag comprising a radio frequency identification (RFID) tag having a non-volatile memory to store physical and logical attribute information; and an electronic device associated with the RFID tag, the electronic device having a processor and a bus, and being communicatively coupled to the RFID tag over the bus, the processor to execute instructions to read information from and write information to the non-volatile memory of the RFID tag.

RFID TAG SINGULATION

NON-CONTACT COMMUNICATION APPARATUS AND METHOD OF NON-CONTACT COMMUNICATION

PROBLEM TO BE SOLVED: To provide a non-contact communication apparatus which can perform stable communication in a non-contact manner even if communication speed is increased. SOLUTION: The non-contact communication apparatus includes an antenna resonance circuit 110 provided with a coil 111 for communicating with an opposite party by electromagnetic coupling, and a changing means to change a Q-value of the antenna resonance circuit 110. The changing means 171 controls the transmission and reception of data to and from the opposite party through the antenna resonance circuit 110 at one of a plurality of communication speeds prepared beforehand, and controls the changing means so as to reduce the Q-value as the communication speed becomes high. COPYRIGHT: (C)2011,JPO&INPIT ...

Dynamic power levels in NFC card communications

Various embodiments are directed to dynamically and temporarily adjusting power to an NFC reader of a computing device from a first power level to a second power level based on a feedback mechanism between a contactless card and the computing device. The contactless card may provide a message containing a checksum. The computing device may receive the message and calculate a checksum based on the received message. By comparing these two checksums, it may be determined whether the entire message has been correctly received. If not, the power to the NFC reader may be temporarily increased to allow better communication between the contactless card and the computing device.

Amplitude modulation device, in particular for contact-free reader and device therefor

PULSED POWER METHOD FOR INCREASED READ RANGE FOR A RADIO FREQUENCY IDENTIFICATION READER

A method to power a radio frequency identification (RFID) reader to increase multi~tag reading capability and increase the reading range of a passive tag without maximizing the continuous transmitted power level is provided. The RFID reader transmits a pulsed interrogation signal until an RFID tag response is received, and then switches to a continuous and pulsed power scheme. The continuous power emitted maintains the power supplied to the RFID tags so the tags will not reset due to loss of power. The pulsed signal permits reading the tags at longer ranges, especially when there is a plurality of tags in the area.

MONITORING DEVICE AND METHOD FOR WIRELESS POWER TRANSMISSION IN A MONITORING DEVICE

In a monitoring device consisting of a reader and a data carrier, the reader comprises a control unit, a memory, a digital signal generator, an output driver, resonance capacitors and a transmitter coil. The digital signal generator is adapted for supplying a digital bit sequence selected among, at least two, bit sequences stored in the memory whereby the strength of the magnetic field generated by the transmitter coil can be varied dependent on the bit sequence selected by the control unit. The invention further provides a method of controlling the strength of a magnetic field generated by the reader of the monitoring device.

CARD READING DEVICE WIRELESS

CONTACTLESS TRANSMISSION OF DATA

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

AUTOMATIC OUTPUT-VALUE ADJUSTMENT METHOD FOR READER/WRITER

PURPOSE: An output value auto control method of RFID reader/writer is provided to optimally control an output value of a RFID reader/writer when communicating with an object having a different propagation reception condition. CONSTITUTION: A propagation output from antenna of a reader/writer is maximized(S31). If a RFID(Radio Frequency ID) tag enters within a readable range of the reader/writer, a tag is read/writed(S32). If the tag attached to user is detected, propagation output from antenna is reduced(S35). If some time is passed after detecting the tag attached to user, the propagation output of the antenna is return to maximum. COPYRIGHT KIPO 2010 ...

SYSTEM AND METHOD FOR OPTIMIZING ACTIVE MEASUREMENTS IN 3-DIMENSIONAL MAP GENERATION

A method and control system for optimizing active measurements are presented. In an embodiment, the method includes emitting at least one active signal in at least one direction; determining whether a return signal is detected for each of the at least one active signal; upon detecting at least one return signal for the at least one active signal: measuring a strength of each return signal; comparing the measured strength of each return signal to at least one optimal return signal strength; and determining, based on the comparison, an optimized configuration for active measurement emissions in one or more directions.

RADIO FREQUENCY IDENTIFICATION (RFID) READER WITH FREQUENCY ADJUSTMENT OF CONTINUOUS RADIO FREQUENCY (RF) WAVE

A method of communicating by a Radio Frequency Identification (RFID) reader includes transmitting, by the RFID reader, a continuous radio frequency (RF) wave at a first frequency. The method also includes adjusting, by the RFID reader, the first frequency of the continuous RF wave to a second frequency and then receiving a backscattered RF wave at the first frequency from an RFID tag. The backscattered RF wave is generated by the RFID tag in response to the continuous RF wave of the first frequency. A difference between the first frequency and the second frequency is equal to or greater than a frequency difference threshold to reduce interference between the backscattered RF wave and the continuous RF wave.

RFID tags enforcing persistence while powered

RFID tags may compensate for non-RFID power sources by automatically enforcing data or state persistence even while powered. A tag may measure a time interval between successive detected modulated reader transmissions. If the interval exceeds a minimum time, then the tag may deassert a protocol flag, erase data, and/or change tag operating states, even if the tag would normally not perform these actions while powered.

APPARATUS AND METHOD FOR DELIVERING POWER TO A CONTACTLESS PORTABLE DATA SOURCE

The present invention ecompasses a terminal device and method of powering a portable device therefrom, by transmitting in two modes of operation. In particular, the terminal transmits to the portable data device, in a first mode of operation (201), a power signal at a first level and a data signal using a first modulation format and a first bit rate. The terminal further transmits, in a second mode of operation (205), a power signal at a second level and a data signal using a second modulation format and a second bit rate. The terminal is capable of determining a requirement to change modes of operation (203) and changes modes in response to changing power requirements of the portable data device.

REDUCE INLAY PITCH SINGULATION

A high speed tabletop and industrial printer is disclosed with integrated high speed RFID encoding and verification at the same time. The industrial printer simultaneously prints on and electronically encodes/verifies RFID labels, tags, and/or stickers attached to a continuous web. The industrial printer comprises a lighted sensor array for indexing the printing to the RFID tags; and a cutter powered from the industrial printer for cutting the web that the RFID tags are disposed on. The industrial printer comprises two RFID reader/writers that are individually controlled. Specifically, one of the RFID reader/writers comprises the ability to electronically encode the RFID tags while the web is moving; and the second RFID reader/writer uses an additional RFID module and antenna on the printer for verifying the data encoded to the RFID tags. Further, the printer utilizes adaptive RFID power settings to prevent misreads and other errors when encoding tags.

REDUCE INLAY PITCH SINGULATION

A high speed tabletop and industrial printer is disclosed with integrated high speed RFID encoding and verification at the same time. The industrial printer simultaneously prints on and electronically encodes/verifies RFID labels, tags, and/or stickers attached to a continuous web. The industrial printer comprises a lighted sensor array for indexing the printing to the RFID tags; and a cutter powered from the industrial printer for cutting the web that the RFID tags are disposed on. The industrial printer comprises two RFID reader/writers that are individually controlled. Specifically, one of the RFID reader/writers comprises the ability to electronically encode the RFID tags while the web is moving; and the second RFID reader/writer uses an additional RFID module and antenna on the printer for verifying the data encoded to the RFID tags. Further, the printer utilizes adaptive RFID power settings to prevent misreads and other errors when encoding tags.

CARD READING DEVICE WIRELESS

L'invention se rapporte à un dispositif de lecture d'une radio-étiquette, le dispositif de lecture (1) comprenant un mode de veille dans lequel il n'émet essentiellement aucun champ électromagnétique et un mode de lecture dans lequel il émet un champ électromagnétique. L'invention se caractérise en ce que le dispositif de lecture (1) comprend en outre un moyen de pré-détection (2) configuré pour effectuer une détection de la présence d'un corps (3, 4) à proximité du dispositif de lecture (1), et en ce que le dispositif de lecture (1) est configuré pour passer de son mode de veille à son mode de lecture si un corps (3, 4) est détecté à proximité du dispositif de lecture (1) par le moyen de pré-détection (2). L'invention se rapporte également à un procédé de lecture d'une radio-étiquette par un dispositif de lecture. The invention relates to a device for reading a radio tag, the reading device (1) comprising a standby mode in which it emits essentially no electromagnetic field and a reading mode in which it emits a field electromagnetic. The invention is characterized in that the reading device (1) further comprises pre-detection means (2) configured to detect the presence of a body (3, 4) in the vicinity of the reading device. (1), and in that the reading device (1) is configured to switch from its standby mode to its reading mode if a body (3, 4) is detected near the reading device (1) by the pre-detection means (2). The invention also relates to a method of reading a radio-tag by a reading device.

INVENTORY SYSTEM OF OBJECTS CONTAINED IN A LIMITED SPACE BY AN ENCLOSURE AND A METHOD OF INVENTORY BROUGHT INTO WORK BY SUCH AN INVENTORY SYSTEM

Method for calibrating electronic radio frequency identification reader in automobile, involves correcting transmission power of signal by proportionality coefficient when difference between control and measures values is changed

L'invention concerne un procédé de calibration d'un lecteur RFID (10) comportant une antenne émettrice (2), initialement calibré de façon à délivrer des signaux électromagnétiques d'une puissance d'émission calibrée Pc. Selon ce procédé, on dispose une bobine (4) au voisinage et dans le champ d'action de l'antenne émettrice (2), et, dans une phase préalable, on commande l'émission, par le lecteur RFID, d'un signal électromagnétique de puissance calibrée Pc, et on mesure, lors de cette émission, une valeur Vc représentative de la tension électrique aux bornes de la bobine (4). De plus, lors de l'utilisation du lecteur RFID, on mesure ponctuellement, une valeur représentative de la tension électrique Vn aux bornes de la bobine (4) lors de l'émission d'un signal électromagnétique, et lors d'une différence entre la valeur calibrée Vc et la valeur mesurée Vn, on modifie l'alimentation de l'antenne émettrice (2) de façon à corriger la puissance d'émission des signaux électromagnétiques d'un coefficient ...

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

PROCESS OF AMPLITUDE MODULATION, IN PARTICULAR FOR READER WITHOUT CONTACT, ETDISPOSITIF OF IMPLEMENTATION

Location sensing for analytical applications

Embodiments herein describe RFID systems that include multiple RFID tag readers that each use a different frequency to communicate with an RFID tag. For example, each of the tag readers may transmit a tag query command using different modulated frequencies. In one embodiment, the RFID tag includes multiple receivers each tuned to one of the different frequencies generated by the tag readers. For example, one receiver in the tag is tuned to receive 200 MHz signals while another receiver is tuned to receive 900 MHz signals. To provide location information, the RFID tag compares power values associated with the received signals to determine which of the RFID tag readers is closest to the tag. The RFID tag conveys this location information to the tag readers by selecting one of the frequencies of the tag readers to use when generating a reply message.

METHODS AND SYSTEMS OF SHARING POWER IN A MULTIPLE RADIO FREQUENCEY NETWORK NODE RFID TAG

In embodiments of the present invention improved capabilities are described for a radio frequency identification (RFID) tag substrate for the mounting of a plurality of RF network nodes. In this way, data communications among the plurality of RF network nodes may be coordinated such that the plurality of RF network nodes act as a single RFID tag when interrogated by an RFID reader, and where power may be shared amongst the plurality of RF network nodes.

CARD READER AND CONTROL METHOD THEREOF

A card reader which reads information recorded on a card may include a plurality of units having overlapping operation periods; and a control unit structured to operate each of the plurality of units by a plurality of drive powers. The control unit may be configured to control the plurality of units so that periods in which the drive powers of each of the plurality of units are maximum do not overlap. 1. A card reader which reads information recorded on a card , the card reader comprising:a plurality of units having overlapping operation periods; anda control unit structured to operate each of the plurality of units by a plurality of drive powers, whereinthe control unit is configured to control the plurality of units so that periods in which the drive powers of each of the plurality of units are maximum do not overlap.2. The card reader according to claim 1 , whereinthe plurality of units are operated when an insertion of the card is detected.3. The card reader according to claim 2 , whereinthe plurality of units comprise at least two of: a shutter driving mechanism structured to drive a shutter member structured to close a conveyance path of the card, a motor structured to drive a conveyance roller structured to convey the card, and an interference magnetic field generation device structured to generate an interference magnetic field.4. The card reader according to claim 3 , whereinthe plurality of units comprise the shutter driving mechanism and the motor, andthe control unit is configured such that, when the insertion of the card is detected, the control unit operates the shutter drive mechanism at a maximum drive power and then operates the shutter drive mechanism at a drive power which is lower than the maximum drive power, and accelerates the motor to a target speed at a first drive power during a period in which the shutter driving mechanism is operated at the drive power which is lower than the maximum drive power, and then rotates the motor at a constant ...

SIGNAL ENHANCEMENT FOR LOAD MODULATION

Systems and methods are provided for enhancing a signal for load modulation from reading a smartcard. According to such methods, an antenna signal is generated by transceiver circuitry. An antenna signal field associated with the antenna signal can be transmitted. A reference signal that is substantially constant in amplitude and phase and substantially in phase with a carrier frequency of the antenna signal can be generated. A modulated antenna signal can be received. The modulated antenna signal can include the antenna signal that has been modulated as a result of the presence of a smartcard within the antenna signal field. The reference signal can be subtracted from the modulated antenna signal to produce a resultant signal. The resultant signal may be provided to receiving circuitry of the transceiver circuitry.

RFID LOCATION SYSTEM AND ASSOCIATED METHODS FOR A PRODUCT DISPENSING SYSTEM

A machine and process for providing consumer products may include a set of positions configured to contain consumer products or containers in which ingredients are used to form consumer products. The consumer products or containers may include radiofrequency identification (RFID) tags. A set of antennas, where at least one antenna is disposed at each position, may be configured to output and receive RF signals. A transceiver may be in electrical communication with the antennas, and be configured to generate the RF signals. A processor may be in communication with the transceiver, and be programmed to (i) receive RFID signals from the RFID tags at the set of positions, and (ii) identify locations of the RFID tags to determine that corresponding consumer products or containers of ingredients are in correct positions. 1. A method for identifying positions in which of radiofrequency identification (RFID) tags affixed to consumer products or containers in which ingredients used to form consumer products by a machine that provides consumer products to consumers are located , said method comprising:generating a radiofrequency (RF) signal at a certain power level;outputting the RF signal to each position of a set of positions at which the consumer products or containers are positioned;reading RFID signals produced by the RFID tags in response to being energized by the RF signal, the RFID signals of different tags including (i) a unique product identifier and (ii) a unique RFID tag identifier, the RFID signals having a signal strength that enables measurement of received signal strength indicator (RSSI) values;recording, into a list, entries for each read RFID signal, the entries including (i) a corresponding unique RFID tag identifier, (ii) a corresponding position identifier, and (iii) a corresponding measured RSSI value; and identifying a highest RSSI value in the list;', 'assigning the corresponding RFID tag identifier to a position based on the corresponding position ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ВОЗБУЖДЕНИЯ ПРИЕМОПЕРЕДАЮЩЕЙ МЕТКИ

FIELD: radio engineering, communication. SUBSTANCE: invention relates to a wireless positioning system and is based on using at least one transceiving label (2) from a plurality of transceiving labels distributed in a monitoring area (8). The transceiving labels are configured for wireless transmission of an identification signal when an exciting electromagnetic signal is present at the location of a transceiving label. A system mobile exciting unit (4) comprises a transmitter (24) configured to transmit an exciting electromagnetic signal for transceiving labels, a mobility adapter (26) for mounting the mobile exciting unit (4) on a mobile device (6) and an additional transceiving label. A system receiver (10) is configured to receive an identification signal from the transceiving label. A system positioning unit (14) is configured to determine position information of the label using the position of the mobile exciting unit and/or signal characteristics of the received identification signal of the transceiving label. EFFECT: high accuracy of positioning a monitored transceiving label. 15 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 578 587 C1 (51) МПК G06K 7/00 (2006.01) G06K 7/10 (2006.01) H04B 5/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014138983/12, 27.02.2012 (24) Дата начала отсчета срока действия патента: 27.02.2012 (73) Патентообладатель(и): ФРАУНХОФЕР-ГЕЗЕЛЛЬШАФТ ЦУР ФЕРДЕРУНГ ДЕР АНГЕВАНДТЕН ФОРШУНГ Е.Ф. (DE) (45) Опубликовано: 27.03.2016 Бюл. № 9 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.09.2014 (86) Заявка PCT: EP 2012/053291 (27.02.2012) 2 5 7 8 5 8 7 (56) Список документов, цитированных в отчете о поиске: US 2009/0195358 A1, 06.08.2009. US 2009/0021351 A1, 22.01.2009. RU 2098297 С1, 10.12.1997. RU 2352995 С1, 20.04.2009. RU 2444049 С2, 27.02.2012. R U Приоритет(ы): (22) Дата подачи заявки: 27.02.2012 (72) Автор(ы): ОТТО Штефан (DE), НОВАК Торстен ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ВОЗБУЖДЕНИЯ ПРИЕМОПЕРЕДАЮЩЕЙ МЕТКИ

Method and apparatus for accessing information on an external machine-readable tag

Transmitter

RFID tag range control

Methods and systems of processing transponder signals received from transponders to identify the transponders (e.g. RFID transponders) are provided. A first signal having a first signal strength is received from a first transponder 104, and a reference signal strength is determined based on the first signal strength. A second signal having a second signal strength is received from a second transponder 106. The reference signal strength is compared with the second signal strength, and the first transponder is determined to be within a predefined area based on the second signal strength being greater than the reference signal strength. A second reference transponder could be used, and the locations of the transponders could also be determined.

Beamforming and localizing in a configurable monitoring device system

A system for radio frequency identification of a tag in an interrogation zone, includes a calibration node disposed in the interrogation zone to measure a signal strength of radio frequency identification signals from a beamforming system and provide signal data in accordance with the signal strength. A reader node is configured to receive the signal data and adjust the radio frequency identification signals generated by the beamforming system based upon the signal data. At least one of the calibration node, the reader node and the beamforming system is a configurable monitoring system. The calibration node, the reader node, and the beamforming system are coupled in a feedback control loop. The beamforming system includes a plurality of beamforming nodes. A signal of at least one beamforming node is optimized in accordance with the feedback control loop.

REDUCE INLAY PITCH SINGULATION

A high speed tabletop and industrial printer is disclosed with integrated high speed RFID encoding and verification at the same time. The industrial printer simultaneously prints on and electronically encodes/verifies RFID labels, tags, and/or stickers attached to a continuous web. The industrial printer comprises a lighted sensor array for indexing the printing to the RFID tags; and a cutter powered from the industrial printer for cutting the web that the RFID tags are disposed on. The industrial printer comprises two RFID reader/writers that are individually controlled. Specifically, one of the RFID reader/writers comprises the ability to electronically encode the RFID tags while the web is moving; and the second RFID reader/writer uses an additional RFID module and antenna on the printer for verifying the data encoded to the RFID tags. Further, the printer utilizes adaptive RFID power settings to prevent misreads and other errors when encoding tags.

METHOD AND SYSTEM FOR CONTROLLING READ RANGE OF A PORTABLE RFID READER

A method and system for controlling the read range of a portable RFID reader is provided. The system includes a trigger system including a mechanical actuator manuall y positionable by a user and a sensor for sensing the position of the actuator. The read range of the RFID reader is changed based on the sensing result.

DEVICE AND PROCESS OF READ/WRITE AUTOMATISEE Of LABELS RFID.

L'invention concerne un dispositif (100) de lecture/écriture d'étiquettes RFID comprenant : - un emplacement (102), dit de lecture, prédéfini prévu pour y poser au moins un objet portant une étiquette RFID, - au moins une antenne RFID (112-118), et - au moins un lecteur RFID (130) coopérant avec ladite antenne RFID (112-118), ladite au moins une antenne RFID (112-118) étant agencée pour lire ladite au moins une étiquette RFID dudit au moins un objet posé audit emplacement de lecture (102). L'invention concerne également un procédé de lecture d'étiquettes RFID.

DATA TRANSMISSION WITHOUT CONTACT

RFID-Reader sowie Vorrichtung mit einem RFID-Reader

An RFID reader that is situated in a recess of an apparatus housing, such that the apparatus housing is constituted of an electrically conductive material, and such that the RFID reader is configured as an RFID reader operating according to the “EMV Contactless Protocol Specification, Version 2.1, March 2011,” such that the RFID antenna is situated in or on a plane constituted by the apparatus housing or inside the apparatus housing, such that the RFID reader has a transmitting power of more than 400 milliwatts, and that a quality factor (Q) of the RFID antenna is in a range between Q=12 and Q=20. In addition, the invention relates to an apparatus with an RFID reader of this type. 1. An RFID reader having at least one RFID antenna and at least one tuning circuit , such that the RFID reader is situated in a recess of a housing of an apparatus , such that the apparatus housing of the apparatus is constituted of an electrically conductive material ,characterized in thatthe at least one RFID antenna is situated in a location selected from the group consisting of a plane constituted by the apparatus housing; inside the apparatus housing; and bordering on the plane constituted by the apparatus housing;that the RFID reader is configured as an RFID reader operating according to the “EMV® Contactless Specifications for Payment Systems, Book D, Communication Protocol Specification, Version 2.1, March 2011;”that the RFID reader has a transmitting power of more than 400 milliwatts; and,that a quality factor for the RFID antenna is in a range between 12 and 20.2. The RFID reader according to claim 1 , wherein a part of the reader housing of the RFID reader visible from the outside in built-in position has a maximum dimension of 100 millimeters by 100 mm or a maximum diameter of 100 mm.3. The RFID reader according to claim 1 , wherein a part of the reader housing of the RFID reader visible from the outside in built-in position has a maximum dimension of 85 mm by 85 mm or a ...

Device and method for the automated reading/writing of rfid tags

A device is provided for reading/writing RFID tags, and includes a so-called pre-defined reading site, on/in which at least one object bearing an RFID tag is to be places; at least one RFID antenna; and at least one RFID reader co-operating with the RFID antenna; the at least one RFID antenna being arranged in such a way as to read the at least one RFID tag of the at least one object placed on/in the reading site. A method for reading RFID tags is also provided.

Rfid reader, rfid tag and rfid system

An RFID reader for communication with an RFID tag includes an RF unit configured to communicate with the RFID tag according to an operating period of the RFID reader. The operating period includes a first period in which the RF unit communicates with the RFID tag, and the operating period includes a second period in which the RF unit does not communicate with the RFID tag. The RFID reader includes a microcontroller unit configured to control a quality factor of the RF unit according to a change in the operating period. The RFID reader includes a power supply configured to supply power to the RF unit and the microcontroller unit.

Adaptive power and frequency

A system or device for identifying or tracking tools, the device including a first wall delimiting a first area wherein a first tool including an RFID tag can be placed. The device further includes a first antenna for communicating with the RFID tag whenever the first tool is in the first area, including sending a request signal to the RFID tag and receiving a response signal emitted by the RFID tag in response to the request signal. The device is characterized in that a first control unit configured to set the first antenna with a first frequency and a first power to values fulfilling the following criteria: (1) the first frequency is selected in a predetermined range of RFID frequencies and maximizes the power of the response signal; and (2) the first power is a minimum value enabling the first antenna set with the selected first frequency value to effectively detect the response signal such that an information about the first tool can be extracted therefrom.

READING APPARATUS

A reading apparatus for reading a wireless tag, such as an RFID tag, comprises a housing having a chamber and an opening providing an entrance to the chamber. A door attached to the housing and covers the opening when closed and permits access to the chamber when opened. A detector is proximate to a first portion of the housing and is configured to detect whether the door is opened or closed. The first portion of the housing faces the door when the door is closed. An antenna within the housing is configured to emit a radio wave to read information from wireless tags inside the chamber. A shielding portion is disposed adjacent to the detector to prevent the radio wave emitted by the antenna from leaking to the outside of the housing through the first portion of the housing. 1. A reading apparatus for reading a wireless tag , the reading apparatus comprising:a housing having a chamber and an opening providing an entrance to the chamber;a door attached to the housing and covering the opening when closed and permitting access to the chamber when opened;a detector disposed proximate to a first portion of the housing and configured to detect whether the door is opened or closed, the first portion of the housing facing the door when the door is closed;an antenna within the housing and configured to emit a radio wave to read information from a wireless tag inside the chamber; anda shielding portion disposed adjacent to the detector to prevent the radio wave emitted by the antenna from leaking to the outside of the housing through the first portion of the housing.2. The reading apparatus according to claim 1 , wherein the shielding portion comprises a radio wave reflecting material.3. The reading apparatus according to claim 1 , wherein the shielding portion comprising a radio wave absorbing material.4. The reading apparatus according to claim 1 , wherein at least a portion of the detector is disposed between the shielding portion and the first portion of the housing.5. The ...

Card reader supporting high-speed data communication, and operating method thereof

An operating method of a card reader supporting high-speed data communication. The method comprises: if a card reader determines that a first in-place flag is not valid, then the card reader sends a card query instruction in a contactless field, sends a speed adjustment configuration instruction to a contactless card upon receiving of query response data returned by the contactless card, and determines whether response data indicating successful speed adjustment configuration and returned by the contactless card is received; and if so, then the card reader configures communication speeds thereof, such that a received first instruction is sent to the contactless card with a first communication speed, and an operation result returned by the contactless card is received with a second communication speed, otherwise the card reader configures the communication speeds thereof, such that a received first instruction is sent to the contactless card with a third communication speed, and an operation result returned by the contactless card is received with a fourth communication speed, wherein the first communication speed is greater than the third communication speed, and the second communication speed is greater than the fourth communication speed. The above method can shorten interaction time between a contactless card reader and a contactless card, thereby improving user experience.

Use of a Tag and Reader Antenna for a Simulated Theremin Effect

The present disclosure provides methods and apparatuses for providing an audible feedback based on a proximity or a link quality between an external reader and a tag. The external reader transmits power to the tag with a radio frequency electromagnetic signal. The tag may rectify the radio frequency electromagnetic signal and create a rectified voltage. This rectified voltage may be used to power various components of the tag. Once it receives power from the reader, the tag may communicate information back to the external reader. The information communicated back to the reader is communicated by modulating an antenna impedance of the tag. By modulating the impedance, the tag will backscatter radiation transmitted by the reader. The reader is able to create an audio output based on determining the proximity or link quality from the reader to the tag based on the backscatter radiation it receives from the tag. 1. A reader apparatus comprising: transmit electromagnetic radiation having a power level, and', 'receive backscatter electromagnetic radiation from a sensing device configured to take measurements, wherein the electromagnetic radiation comprises an indication of a supply voltage in the sensing device; and, 'an antenna configured toa control unit configured to generate a signal based on the indication of the supply voltage in the sensing device; andan audio unit configured to generate an audio output based on the generated signal.2. The reader apparatus according to claim 1 , wherein the control unit is further configured to alter the generated signal based on a change in the supply voltage.3. The reader apparatus according to claim 1 , wherein the backscatter electromagnetic radiation provides data and the control unit determines the supply voltage based on the data.4. The reader apparatus according to claim 1 , wherein the control unit is further configured to alter the power level based on at least one of (i) a proximity between the device that caused the ...

WIRELESS TAG COMMUNICATION DEVICE AND WIRELESS TAG COMMUNICATION PROGRAM

According to one embodiment, a wireless tag communication device which communicates with a wireless tag includes a communication unit that designates a target wireless tag to read tag information stored in the wireless tag; a read-state determination unit that determines a read state of the tag information read by the communication unit; an output adjustment unit that varies a radio wave output to be transmitted to the wireless tag in response to the result of the determination by the read-state determination unit; a signal strength detection unit that detects the signal strength of a reply signal received from the wireless tag via the communication unit; and a control unit that switches the operation mode of the communication unit between a long-distance mode to communicate with the wireless tag while the output adjustment unit varies the radio wave output and a near-field mode to communicate with the wireless tag while the signal strength detection unit detects the signal strength.

PORTABLE ENCODED INFORMATION READING TERMINAL CONFIGURED TO ADJUST TRANSMIT POWER LEVEL

A system and method of adjusting the transmission strength emitted by an integrated RFID reader. The system may stores the location of the RFID when moved proximate to an object as a point of origin. When the RFID reader moves relative to the point of origin, the system may determine the distance of the RFID reader from the point of origin and may adjust the power level of the RFID reader relative to this distance. 1. A method of adjusting a transmission strength emitted by a reader , the method comprising:scanning, by the reader, a first location as a point of origin at a first power level;storing the first location in memory of the reader; andchanging the power level of the reader to a second power level based on a distance the reader is moved to a second location from the first location; andscanning at the second power level.2. The method of claim 1 , wherein the second power level is lower than the first power level.3. The method of claim 1 , wherein the reader comprises one of: an RFID reader or a bar code scanner.4. The method of claim 1 , further comprising:communicating an alert when the second power level is a maximum power level of the reader, orcommunicating an alert when the second power level is a minimum power level of the reader.5. The method of claim 1 , further comprising:scanning an encoded item, by the reader, for encoded data;transmitting the encoded data obtained by the reader item to a database or memory; andobtaining, using the encoded data, either (1) information about an item associated with the encoded item or (2) initial calibration data for the reader.6. The method of claim 1 , wherein the encoded item comprises a bar code.7. The method of claim 1 ,further comprising tracking motion of the reader; andnotifying a user via an audible or visible signal after the tracking begins and after a predetermined noise level threshold has been reached.8. The method of claim 1 , wherein power levels of the reader at various locations of the reader's ...

LOCATION SENSING FOR ANALYTICAL APPLICATIONS

Embodiments herein describe RFID systems that include multiple RFID tag readers that each use a different frequency to communicate with an RFID tag. For example, each of the tag readers may transmit a tag query command using different modulated frequencies. In one embodiment, the RFID tag includes multiple receivers each tuned to one of the different frequencies generated by the tag readers. For example, one receiver in the tag is tuned to receive 200 MHz signals while another receiver is tuned to receive 900 MHz signals. To provide location information, the RFID tag compares power values associated with the received signals to determine which of the RFID tag readers is closest to the tag. The RFID tag conveys this location information to the tag readers by selecting one of the frequencies of the tag readers to use when generating a reply message. 1. A radio frequency identification (RFID) tag comprising:at least one receiver configured to receive a first RFID signal comprising a first frequency and a second RFID signal comprising a second frequency; and select, in response to receiving the first and second RFID signals, one of the first and second frequencies by determining which of the first or second RFID signal has the greater signal strength, and', 'output a reply message comprising a tag ID using the selected frequency., 'logic configured to2. The RFID tag of claim 1 , wherein the selected frequency is the first frequency claim 1 , and wherein the reply message is not modulated using the second frequency.3. The RFID tag of claim 1 , wherein the first RFID signal is a tag query command transmitted by a first tag reader and the second RFID signal is a tag query command transmitted by a second tag reader.4. The RFID tag of claim 1 , wherein the first RFID signal comprises a frequency range that does not overlap with a frequency range of the second RFID signal.5. The RFID tag of claim 1 , wherein outputting the reply message comprises:modulating the selected ...

METHOD AND DEVICE FOR POSITIONING ELECTRONIC PRICE TAG BASED ON NEIGHBOR RELATIONSHIP

A method and device for positioning an electronic price tag based on a neighbor relationship, comprising: obtaining a plurality of electronic price tag reports, wherein each electronic price tag report includes an identity of a neighbor electronic price tag or an anchor point received by the electronic price tag and a weight of the neighbor electronic price tag received within a limited time slice, and the position of the anchor point is known; determining connection relationships between the electronic price tag to be positioned and all anchor points based on the plurality of electronic price tag reports; determining path values between the electronic price tag to be positioned and each anchor point respectively based on the connection relationships, and sorting the path values from small to large to obtain first two path values in order. 1. A method for positioning an electronic price tag based on a neighbor relationship , comprising:obtaining a plurality of electronic price tag reports, wherein each electronic price tag report includes an identity of a neighbor electronic price tag or an anchor point received by the electronic price tag and a weight of the neighbor electronic price tag received within a limited time slice, and wherein position of the anchor point is known;determining connection relationships between the electronic price tag to be positioned and all anchor points based on the plurality of electronic price tag reports;determining path values between the electronic price tag to be positioned and each anchor point respectively based on the connection relationships, and sorting the path values from small to large to obtain first two path values in order; anddetermining position of the electronic price tag to be positioned based on the two path values and coordinate information of two anchor points respectively corresponding to the two path values.2. The method for positioning an electronic price tag based on a neighbor relationship according to claim ...

CARD DETECTION AND SELECTION

Techniques for CSC detection and selection include generating a radio frequency (RF) field that defines a range of communication for the CSC reader, transmitting a signal in the RF field, and detecting a modulation in the RF field indicating that a first CSC is within the RF field and has responded to the signal. The modulation is inspected for collision, wherein collision occurs if more than one CSC within the RF field responds to the poll signal. After determining that the modulation does not contain a collision, a halt command is transmitted to the first CSC instructing the CSC to only respond to one or more specific commands. 1. A method executed by a contactless smart card (CSC) reader for CSC detection and selection , the method comprising:generating a radio frequency (RF) field that defines a range of communication for the CSC reader;transmitting a first signal in the RF field;detecting a modulation in the RF field indicating that a first CSC is within the RF field and has responded to the first signal;inspecting the modulation for a collision, wherein the collision occurs if more than one CSC within the RF field responds to the first signal;determining that the modulation does not contain the collision; andtransmitting a halt command to the first CSC in response to determining that the modulation does not contain the collision, wherein the halt command instructs the first CSC to only respond to at least one specific command.2. The method of claim 1 , further comprising:increasing a power level of the RF field; andtransmitting a second signal in the RF field.3. The method of claim 1 , further comprising the steps of:attenuating a power level of the RF field; andtransmitting a second signal in the RF field.4. The method of claim 1 , further comprising:transmitting a second signal in the RF field after a preset period of time has passed since transmitting the halt command to the first CSC.5. The method of claim 1 , further comprising:transmitting a second ...

WIRELESS TAG COMMUNICATION DEVICE, WIRELESS TAG COMMUNICATION SYSTEM AND PROGRAM

A wireless tag communication device which communicates with wireless tags storing identification information, includes a wireless tag communication unit that performs a reading of wireless tags by a first read function that does not designate the wireless tags and a second read function that designates the wireless tags, a comparison unit that compares information of the wireless tags that are stored in a storage unit with read information of the wireless tags and outputs a read result, a route information setting unit that sets designation order values of wireless tags present in a list of read objects but not read by the first read function, when the wireless tags are designated and read by the second read function, and an unread list generation unit that generates an unread list using at least a result read by the second read function. 1. A wireless tag communication device which communicates with wireless tags that are attached to a plurality of goods and stores at least identification information , and reads information stored in the wireless tags , and a device capable of communicating with the wireless tag communication device , the wireless tag communication device comprising:a wireless tag communication unit which communicates with the wireless tags by a first read function that does not designate the wireless tags and a second read function that designates the wireless tags;a controller that controls the wireless tag communication unit;a storage unit that stores information regarding the wireless tags to be read;a comparison unit which compares information concerning the wireless tags stored in the storage unit with information concerning wireless tags that may be read in the wireless tag communication unit, and outputs a read result; anda route information setting unit that establishes a correlation of wireless tags that are expected to be read in comparison to the wireless tags that actually are read.2. The wireless tag communication device of claim 1 , ...

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM

An information processing apparatus operable to specify identification information of a communication object that a moving object that carries a reader apparatus holds: receives, from the reader apparatus, identification information read from a communication object near the reader apparatus, and a reading time thereof; stores, in a memory unit, association information that includes association of the received identification information and the reading time; and specifies the identification information of the communication object that the moving object holds based on the association information stored in the memory unit. 1. An information processing apparatus operable to specify identification information of a communication object that a moving object that carries a reader apparatus holds , the apparatus comprising:a receiving unit configured to receive, from the reader apparatus, identification information that the reader apparatus read from a communication object near the reader apparatus, and a reading time thereof;a storing unit configured to store, in a memory unit, association information that includes association of the identification information received by the receiving unit and the reading time; anda specifying unit configured to specify the identification information of the communication object that the moving object holds based on the association information stored in the memory unit.2. The apparatus according to claim 1 , wherein the specifying unit specifies the identification information of the communication object that the moving object holds based on association information whose reading time belongs within a specific period.3. The apparatus according to claim 1 , wherein the specifying unit counts a number of detections of identification information of each communication object from the association information claim 1 , and specifies as the identification information of the communication object that the moving object holds based on the counted ...

APPARATUS FOR ACQUIRING 3-DIMENSIONAL MAPS OF A SCENE

An active sensor for performing active measurements of a scene is presented. The active sensor includes at least one transmitter configured to emit light pulses toward at least one target object in the scene, wherein the at least one target object is recognized in an image acquired by a passive sensor; at least one receiver configured to detect light pulses reflected from the at least one target object; a controller configured to control an energy level, a direction, and a timing of each light pulse emitted by the transmitter, wherein the controller is further configured to control at least the direction for detecting each of the reflected light pulses; and a distance measurement circuit configured to measure a distance to each of the at least one target object based on the emitted light pulses and the detected light pulses.

ASSET TRACKING SYSTEM

An asset tracking system that has a master notification unit, a reader relay unit in communication with the master notification unit, and a tag configured to be coupled to an asset. When the reader relay unit identifies a tag, the reader relay unit sends a signal to the master notification unit providing both a tag identifier and a reader relay unit identifier. 1. An asset tracking system for a service vehicle , comprising:a master notification unit;a reader relay unit in communication with the master notification unit; anda tag configured to be coupled to an asset;wherein, when the reader relay unit identifies a tag the reader relay unit sends a signal to the master notification unit providing both a tag identifier and a reader relay unit identifier.2. The asset tracking system of claim 1 , further wherein the master notification unit is a radio frequency receiver and transmitter.3. The asset tracking system of claim 2 , further wherein tags are detectable directly by the master notification unit.4. The asset tracking system of claim 2 , further wherein the master notification unit provides a wireless network for a user to access.5. The asset tracking system of claim 1 , further comprising multiple reader relay units providing a mesh network with the master notification unit.6. The asset tracking system of claim 1 , further comprising multiple reader relay units and wherein the master notification unit determines which reader relay unit the tag is closest to by comparing the strength of a tag signal from each of the reader relay units.7. The asset tracking system of claim 1 , further wherein the reader relay unit implements a sleep mode in time intervals to reduce power consumption.8. The asset tracking system of claim 7 , wherein vehicle sensors provide inputs to enter and exit sleep mode.9. The asset tracking system of claim 1 , further wherein the reader relay unit is positioned above an assigned storage location.10. The asset tracking system of claim 1 , ...

Rfid transponder and corresponding operating method

In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) transponder is provided, comprising: at least one functional component configured to perform a function of the RFID transponder; a charge pump configured to supply an output voltage to said functional component, wherein said charge pump comprises a plurality of charge pump stages; a charge pump controller configured to control a number of charge pump stages which contribute to the output voltage. In accordance with a second aspect of the present disclosure, a corresponding method of operating an RFID transponder is conceived.

Location Sensing for Analytical Applications

Embodiments herein describe RFID systems that include multiple RFID tag readers that each use a different frequency to communicate with an RFID tag. For example, each of the tag readers may transmit a tag query command using different modulated frequencies. In one embodiment, the RFID tag includes multiple receivers each tuned to one of the different frequencies generated by the tag readers. For example, one receiver in the tag is tuned to receive MHz signals while another receiver is tuned to receive MHz signals. To provide location information, the RFID tag compares power values associated with the received signals to determine which of the RFID tag readers is closest to the tag. The RFID tag conveys this location information to the tag readers by selecting one of the frequencies of the tag readers to use when generating a reply message. 17-. (canceled)8. An RFID tag , comprising:a first receiver tuned to receive a first RFID signal, wherein the first receiver is configured to generate a first power value indicating a signal strength of the first RFID signal;a second receiver tuned to receive a second RFID signal, wherein the second receiver is configured to generate a second power value indicating a signal strength of the second RFID signal, and wherein the first and second receivers are tuned to different frequencies;a comparator configured to determine which of the first and second RFID signals has a greater signal strength based on the first and second power values; anda transmitter configured to transmit a reply message using a frequency corresponding to the first or second RFID signal with the greater signal strength.9. The RFID tag of claim 8 , wherein the first RFID signal is a tag query command transmitted by a first tag reader and the second RFID signal is a tag query command transmitted by a second tag reader.10. The RFID tag of claim 9 , wherein the first RFID signal comprises a frequency range that does not overlap with a frequency range of the second ...

Location Sensing for Analytical Applications

Embodiments herein describe RFID systems that include multiple RFID tag readers that each use a different frequency to communicate with an RFID tag. For example, each of the tag readers may transmit a tag query command using different modulated frequencies. In one embodiment, the RFID tag includes multiple receivers each tuned to one of the different frequencies generated by the tag readers. For example, one receiver in the tag is tuned to receive 200 MHz signals while another receiver is tuned to receive 900 MHz signals. To provide location information, the RFID tag compares power values associated with the received signals to determine which of the RFID tag readers is closest to the tag. The RFID tag conveys this location information to the tag readers by selecting one of the frequencies of the tag readers to use when generating a reply message. 1. A method of operating a radio frequency identification (RFID) tag , the method comprising:receiving a first RF identification (RFID) signal at the RFID tag at a first frequency;receiving a second RFID signal at the RFID tag at a second frequency different from the first frequency;generating respective power values indicating the signal strengths of the first and second RFID signals;determining, based on the respective power values, which of the first and second RFID signals has the greater signal strength; andtransmitting a reply message from the RFID tag using a frequency corresponding to the first or second RFID signal with the greater signal strength.2. The method of claim 1 , wherein the first RFID signal is a tag query command transmitted by a first tag reader and the second RFID signal is a tag query command transmitted by a second tag reader.3. The method of claim 2 , wherein the first RFID signal comprises a frequency range that does not overlap with a frequency range of the second RFID signal.4. The method of claim 1 , wherein transmitting a reply message comprises:modulating the first or second RFID signal ...

SYSTEMS AND METHODS FOR OPERATING A TAG

Systems and methods for operating a Radio Frequency Identification (“RFID”) tag. The methods comprise: monitoring a level of Radio Frequency (“RF”) energy being received by the RFID tag; performing operations by a circuit of the RFID tag to compare the level of RF energy in a given frequency band to a first threshold value; and transitioning an operational mode of the RFID tag from a first operational mode in which a receiver is disabled to a second operational mode in which the receiver is enabled, when the level of RF energy exceeds the first threshold value. The RFID tag is able to communicate with a remote tag reader when the RFID tag is in the second operational mode and not when the RFID tag is in the first operational mode. 1. A method for operating a first Radio Frequency Identification (“RFID”) tag , comprising:monitoring a level of Radio Frequency (“RF”) energy being received by the first RFID tag;performing operations by a circuit of the first RFID tag to compare the level of RF energy in a given frequency band to a first threshold value; andtransitioning an operational mode of the first RFID tag from a first operational mode in which a receiver is disabled to a second operational mode in which the receiver is enabled, when the level of RF energy exceeds the first threshold value;wherein the first RFID tag is able to communicate with a remote tag reader when the first RFID tag is in the second operational mode and not when the first RFID tag is in the first operational mode.2. The method according to claim 1 , wherein the first operational mode comprises a power recharging mode in which a rechargeable power source is charged using harvested energy.3. The method according to claim 1 , wherein the first operational mode comprises a power save mode.4. The method according to claim 1 , wherein the first RFID tag is configured to communicate with the remote tag reader during at least one time slot.5. The method according to claim 4 , wherein the at least one ...

APPARATUS AND METHOD FOR ENERGIZING A TRANSCEIVER TAG

A wireless location system for energizing and/or determining location information indicative of a location of at least one transceiver tag () of a plurality of transceiver tags distributed within a tracking area, the transceiver tags being operable to wirelessly transmit an identification signal when an energizing electromagnetic signal is present at the location of the transceiver tag, comprises at least one mobile energizer node () comprising a transmitter () operable to transmit the energizing electromagnetic signal for the at least one transceiver tag (). The mobile energizer node () is mounted on a movable device (). At least one receiver () is operable to receive the identification signal from the transceiver tags and at least one location evaluator () is operable to determine the location information using a location of the mobile energizing node () and/or a signal characteristic of the received identification signal of the at least one transceiver tag (). 122-. (canceled)23222. Method for energizing a transceiver tag () , the transceiver tag () being operable to wirelessly transmit an identification signal when an energizing electromagnetic signal is present at a location of the transceiver tag () , the method comprising:{'b': 4', '8', '2', '2', '8', '4, 'moving a mobile energizer node () transmitting the energizing electromagnetic signal within at least an energizing range () into a vicinity of the transceiver tag (), such that the transceiver tag () is located within the energizing range () of the mobile energizer node ().'}24. The method of claim 23 , further comprising:{'b': '2', 'receiving the identification signal from the transceiver tag (); and'}{'b': 2', '4, 'determining location information indicative of the location of the transceiver tag () using a location of the mobile energizing node () and/or a signal characteristic of the received identification signal.'}252. The method of claim 23 , wherein the transceiver tag () is a passive Radio ...

Wireless tag initialization device and wireless tag initialization method

A wireless tag initialization device includes a reader and writer that weakens supply power to a first threshold value at which a wireless tag to be initialized is activated and other wireless tags are not activated, transmit a first command to invert a flag of the wireless tag to be initialized, increases the supply power to a second threshold value which is sufficient to write an initial value, and writes the initial value in the wireless tag with the inverted SL flag.

Apparatus and method for radio frequency transmission

A radio frequency (RF) transmission circuit includes an antenna connection terminal, a plurality of amplifiers connected to the antenna connection terminal in parallel, a plurality of drivers for driving the plurality of amplifiers, and a control circuit configured to control operation of the plurality of drivers based on information indicating a characteristic of a RF signal to be transmitted through the antenna connection terminal.

RFID MOTION TRIGGERING

A RFID reader RFID reader may include an antenna that outputs signals and receive signals reflected from an object moving relative to the antenna, and circuitry configured to receive the reflected signals from the antenna. The reflected signals may determine that the motion has occurred relative to the antenna or be cancelled using a signal generated based on the reflected signals. 1. An RFID reader comprising:a radio frequency (RF) circuitry;an antenna;a transmission pathway connecting the antenna with the RF circuitry;a coupler having: a main line in electrical communication with the transmission pathway, and a coupled line configured to sample signals received from the antenna, the sampled signals including low frequency oscillations caused by movement of an object or body portion relative to the antenna, anda controller configured to output, using a signal generator, a cancellation signal, which is an inverse of the low frequency oscillations, to the coupler such that the cancellation signal from the controller is configured to cancel, at the main line, the low frequency oscillations received from the antenna.2. The RFID reader of claim 1 , wherein the RF signal source provides RF signals at frequencies above 850 MHz.3. The RFID reader of claim 1 , wherein the RF signal source provides RF signals at frequencies between 2.4 GHz and 2.483 GHz.4. The RFID reader of claim 1 , further comprising a filter attached to the coupler line for filtering low frequency oscillations caused by the presence of an object or body portion claim 1 , wherein the low frequency oscillations are provided to the controller which provides cancellation signals to the coupler to cancel the low frequency oscillations.5. The RFID reader of claim 1 , wherein the RF signal source provides RF signals of a power not exceeding approximately 10 mW.6. The RFID reader of claim 1 , wherein the controller is further configured to adjust one or more criteria by which the state signal is determined.7. ...

Card detection for a nfc (near field communication) reader system

This specification discloses methods and devices for NFC/RFID (near field communication/radio frequency identification) reader systems to detect an external target device (e.g., tag or card device) within communication distance. In some embodiments, this is achieved by: (i) directing a Tx (transmitter) unit to generate a Tx signal, (ii) sweeping through a first Tx output (e.g., Tx voltage) in an increasing manner, and then (iii) monitoring a second Tx output (e.g., Tx current). During monitoring, a step change in the second Tx output (e.g., Tx current) would indicate detection of an external target device.

RFID READ AND WRITE POWER SETTING SYSTEM AND METHOD

A system and method for configuring Radio Frequency Identification (RFID) read and write power levels includes an RFID module that generates RF signals, a digital step attenuator that attenuates RF signals, an antenna that transmits attenuated RF signals, and an RF shield that isolates the antenna from an RFID label supply roll. A floor read power is determined by iteratively interrogating an RFID label while decreasing the RF signal power until the label fails to respond to the interrogation. A ceiling read power is determined by iteratively interrogating the RFID label while increasing the RF signal power until multiple labels respond to the interrogation. The read power level is set between the floor read power and the ceiling read power. The write power level is determined by iteratively attempting to program the RFID module while increasing the write power from the read power level until successfully written. 1. A method , comprising:setting a read power level of an Radio Frequency Identification (RFID) device to an initial power level;determining a floor read power level by iteratively interrogating an RFID label with the RFID device while decreasing the read power level until eitherthe RFID label fails to respond to the interrogation, orthe read power level reaches a minimum power level;determining a ceiling read power level by iteratively interrogating the RFID label with the RFID device while increasing the read power level until eithera second RFID label responds to the interrogation, orthe read power level reaches a maximum power level; andconfiguring the read power level of the RFID device based at least in part on the floor read power level and the ceiling read power level.2. The method of claim 1 , wherein the read power level is configured to be approximately the midpoint between floor read power level and the ceiling read power level.3. The method of claim 1 , wherein the initial power level is based at least in part on the minimum power level and ...

Apparatus and method for context-based credit card reader power management

An apparatus for context-based credit card reader management is provided that includes a point-of sale (POS) terminal, configured to accept employee login credentials via a magnetic stripe card, to display menu items for selection, to add selected menu items to an order, and to accept payment for the order, where the payment may be obtained via swipe, dip, or tap. The POS terminal has a card reader and a reader controller. The card reader reads provided cards when fully powered and enabled. The reader controller is coupled to the card reader, and determines one or more workflow states of the POS terminal, and dynamically controls power states of the card reader according to the one or more workflow states.

CONTACTLESS COMMUNICATION DEVICE AND USER DEVICE INCLUDING THE SAME

A contactless communication device is provided which includes a field strength detecting circuit configured to detect a strength of a field induced on an antenna; a card circuit configured to demodulate a signal received via the antenna during a reception interval of a card mode; a processing unit configured to process the demodulated signal; and a reader circuit configured to transmit data via the antenna during a transmission interval of the card mode, the data provided from the processing unit, wherein an output power of the reader circuit is adjusted according to the field strength detected. 1. A contactless communication device , comprising:a field strength detecting circuit configured to detect a strength of a field induced on an antenna;a card circuit configured to demodulate a signal received via the antenna during a reception interval of a card mode;a processing unit configured to process the demodulated signal; anda reader circuit configured to transmit data via the antenna during a transmission interval of the card mode, the data provided from the processing unit,wherein the device is configured to adjust an output power of the reader circuit according to the field strength detected.2. The contactless communication device of claim 1 , wherein the transmitted data is responsive to the received signal.3. The contactless communication device of claim 1 , wherein the device is configured to adjust an output power of the reader circuit according to the field strength detected before the transmission interval of the card mode claim 1 , and to maintain the adjusted output power during the transmission interval of the card mode.4. The contactless communication device of claim 1 , wherein an output power of the reader circuit is adjusted according to the field strength detected before the transmission interval of the card mode claim 1 , and the adjusted output power is adjusted according to the field strength detected in the transmission interval of the card mode. ...

SYSTEMS AND METHODS OF TRACKING SMART LUGGAGE

Systems and methods of causing a tracking sensor system in smart luggage to exit a low power sleep state are provided. Some methods can include an accelerator sensor system associated with the luggage identifying when the luggage has exited an aircraft, and responsive thereto, the accelerator sensor system transmitting a signal to the tracking sensor system associated with the luggage with instructions for the tracking sensor system to exit a low sleep state. In some embodiments identifying when the luggage has exited the aircraft can include identifying a trajectory of the luggage, identifying that the luggage is moved along a path with a predetermined curved shape, or identifying that the luggage is moved along a baggage conveyer belt. 1. A method comprising:an accelerator sensor system associated with a piece of luggage identifying when the piece of luggage has exited an aircraft; andresponsive to identifying that the piece of luggage has exited the aircraft, the accelerator sensor system transmitting a first signal to a tracking sensor system associated with the piece of luggage,wherein the first signal includes instructions for the tracking sensor system to exit a low sleep state.2. The method of wherein the accelerator sensor system identifying when the piece of luggage has exited the aircraft includes the accelerator sensor system identifying a trajectory of the piece of luggage.3. The method of wherein the accelerator sensor system identifying the trajectory of the piece of luggage includes the accelerator sensor system identifying that the piece of luggage is moved along a path with a predetermined curved shape.4. The method of wherein the accelerator sensor system identifying that the piece of luggage is moved along the path with the predetermined curved shape includes the accelerator sensor system identifying that the piece of luggage is moved along a baggage conveyer belt.5. The method of further comprising:the tracking sensor system exiting the low ...

USE OF A TAG AND READER ANTENNA FOR A SIMULATED THEREMIN EFFECT

The present disclosure provides methods and apparatuses for providing an audible feedback based on a proximity or a link quality between an external reader and a tag. The external reader transmits power to the tag with a radio frequency electromagnetic signal. The tag may rectify the radio frequency electromagnetic signal and create a rectified voltage. This rectified voltage may be used to power various components of the tag. Once it receives power from the reader, the tag may communicate information back to the external reader. The information communicated back to the reader is communicated by modulating an antenna impedance of the tag. By modulating the impedance, the tag will backscatter radiation transmitted by the reader. The reader is able to create an audio output based on determining the proximity or link quality from the reader to the tag based on the backscatter radiation it receives from the tag. 120-. (canceled)21. A device comprising: transmit electromagnetic radiation having a power level, and', 'receive backscatter electromagnetic radiation from a sensing device configured to take measurements; and, 'an antenna configured toa control unit configured to interpret an indication of the supply voltage in the sensing device from the received backscatter electromagnetic radiation and generate a signal based on the indication of the supply voltage in the sensing device; anda visual indicator configured to generate a visual output based on the generated signal.22. The device of claim 21 , further comprising an audio unit configured to generate an audio output based on the generated signal.23. The device of claim 21 , wherein the control unit is further configured to alter the generated signal based on a change in the supply voltage.24. The device of claim 21 , wherein the backscatter electromagnetic radiation provides data and the control unit determines the supply voltage based on the data.25. The device of claim 21 , wherein the control unit is further ...

SIGNAL ENHANCEMENT FOR LOAD MODULATION

Systems and methods are provided for enhancing a signal for load modulation from reading a smartcard. According to such methods, an antenna signal is generated by transceiver circuitry. An antenna signal field associated with the antenna signal can be transmitted. A reference signal that is substantially constant in amplitude and phase and substantially in phase with a carrier frequency of the antenna signal can be generated. A modulated antenna signal can be received. The modulated antenna signal can include the antenna signal that has been modulated as a result of the presence of a smartcard within the antenna signal field. The reference signal can be subtracted from the modulated antenna signal to produce a resultant signal. The resultant signal may be provided to receiving circuitry of the transceiver circuitry. 1. A method of enhancing a signal for load modulation from reading a smartcard , the method comprising:generating, by transceiver circuitry, an antenna signal;transmitting an antenna signal field associated with the antenna signal;generating a reference signal that is substantially constant in amplitude and phase, and substantially in phase with a carrier frequency of the antenna signal;receiving a modulated antenna signal, wherein the modulated antenna signal comprises the antenna signal that has been modulated as a result of the presence of a smartcard within the antenna signal field;subtracting the reference signal from the modulated antenna signal to produce a resultant signal; andproviding the resultant signal to receiving circuitry of the transceiver circuitry.2. The method of enhancing a signal for load modulation from reading a smartcard according to claim 1 , wherein the reference signal and the antenna signal are generated simultaneously.3. The method of enhancing a signal for load modulation from reading a smartcard according to claim 1 , wherein subtracting the reference signal from the modulated antenna signal is done using a transformer.4. ...

RADIO TAG COMMUNICATION DEVICE, RADIO TAG COMMUNICATION METHOD, AND IMAGE FORMING APPARATUS

According to one embodiment, a radio tag communication device includes an antenna configured to transmit an interrogation signal and receive a response signal from a radio tag transmitting the response signal in response to the interrogation signal. A radio tag communication control unit of the device is configured to cause the antenna to repeatedly transmit the interrogation signal from a start time of an object conveyance until a reception strength of the response signal received by the antenna is equal to or greater than a predetermined threshold, and then perform writing on the radio tag via the antenna once the reception strength of the response signal received by the antenna is equal to or greater than the predetermined threshold. 1. A radio tag communication device , comprising:an antenna configured to transmit an interrogation signal and receive a response signal from a radio tag transmitting the response signal in response to the interrogation signal; anda radio tag communication control unit configured to cause the antenna to repeatedly transmit the interrogation signal from a start time of an object conveyance until a reception strength of the response signal received by the antenna is equal to or greater than a predetermined threshold, and then perform writing on the radio tag via the antenna once the reception strength of the response signal received by the antenna is equal to or greater than the predetermined threshold.2. The radio tag communication device according to claim 1 , wherein the radio tag communication control unit is configured to stop transmitting the interrogation signal if the reception strength is still less than the predetermined threshold after a predetermined time elapses after the start time of the object conveyance.3. The radio tag communication device according to claim 1 , wherein the object is a sheet of paper with the radio tag attached thereto.4. The radio tag communication device according to claim 1 , wherein the radio tag ...

Portable encoded information reading terminal configured to adjust transmit power level

A system and method of adjusting the transmission strength emitted by an integrated RFID reader. The system may stores the location of the RFID when moved proximate to an object as a point of origin. When the RFID reader moves relative to the point of origin, the system may determine the distance of the RFID reader from the point of origin and may adjust the power level of the RFID reader relative to this distance.

PORTABLE ELECTRONIC DEVICE, NON-CONTACT COMMUNICATION SYSTEM, AND NON-CONTACT COMMUNICATION METHOD

A portable electronic device of an embodiment includes a plurality of secure elements and a communicator. The communicator performs communication with a reader/writer device to which an external device is connected using non-contact communication. The communicator changes a transmission destination to a secure element corresponding to a transmission destination identifier for identifying the transmission destination among the plurality of secure elements on the basis of the transmission destination identifier and change-instruction-information giving instructions to change the transmission destination, assigned to telegraph data received from the reader/writer device using the non-contact communication and transmits the telegraph data received from the reader/writer device to the secure element. 1. A portable electronic device comprising:a plurality of secure elements; anda communicator that performs communication with a reader/writer device to which an external device is connected using non-contact communication,the communicator that changes a transmission destination to a secure element corresponding to a transmission destination identifier for identifying the transmission destination among the plurality of secure elements on the basis of the transmission destination identifier and of a change-instruction-information giving instructions to change the transmission destination, wherein the transmission destination identifier and the change-instruction-information are assigned to telegraph data received from the reader/writer device using the non-contact communication, andthe communicator that transmits the telegraph data received from the reader/writer device to the secure element.2. The portable electronic device according to claim 1 , whereinthe telegraph data is assigned with node address information including the transmission destination identifier, a transmission source identifier for identifying a transmission source, and the change-instruction-information, ...

NONCONTACT COMMUNICATION MEDIUM, MAGNETIC TAPE CARTRIDGE, OPERATION METHOD OF NONCONTACT COMMUNICATION MEDIUM, AND STORAGE MEDIUM

A noncontact communication medium includes a coil and a processor mounted on a magnetic tape cartridge. The processor communicates with a communicatee by coupling between the coil and the communicatee by electromagnetic induction through an external magnetic field applied from the communicatee. The communicatee merges a command into the external magnetic field. The processor executes processing corresponding to the command merged into the external magnetic field. The processor changes a response time of the processor in response to the command, according to a characteristic of at least one of the magnetic tape cartridge, the noncontact communication medium, or the communicatee. 1. A noncontact communication medium comprising:a coil; anda processor mounted on a magnetic tape cartridge, the processor communicating with a communicatee by coupling between the coil and the communicatee by electromagnetic induction through an external magnetic field applied from the communicatee, the communicatee merging a command into the external magnetic field, the processor executing processing corresponding to the command merged into the external magnetic field, whereinthe processor changes a response time of the processor in response to the command, according to a characteristic of at least one of the magnetic tape cartridge, the noncontact communication medium, or the communicatee.2. The noncontact communication medium according to claim 1 , further comprising:a first memory storing first information, the processor executing at least one of reading or writing of the first information from and into the first memory, whereinthe processor changes the response time according to an available storage capacity set in the first memory.3. The noncontact communication medium according to claim 1 , whereinthe noncontact communication medium is in conformity with a plurality of communication standards,the processor carries out communication with selective use of the plurality of communication ...

Image display processing device and display processing program

The invention provides an image display processing device and an image display processing program for displaying information concerning diagnosis of correspondence with an RF tag. The image display processing device includes a unit for obtaining diagnostic information concerning correspondence when correspondence between the RF tag and an RFID reader/writer has been successful, and a display controller configured to make a display unit display an image based on the diagnostic information. The diagnostic information includes correspondence margin based on a characteristic value obtained from the correspondence signal.

RFID TAG RANGE CONTROL

Methods and systems of processing transponder signals received from transponders to identify the transponders are provided. A first signal having a first signal strength is received from a first transponder, and a reference signal strength is determined based on the first signal strength. A second signal having a second signal strength is received from a second transponder. The reference signal strength is compared with the second signal strength. The first transponder is determined to be within a predefined range based on the second signal strength being greater than the reference signal strength. 1. A method of processing transponder signals received from transponders to identify the transponders , the method comprising:receiving, from a reference transponder, a first signal having a first signal strength;determining a reference signal strength based on the first signal strength;receiving, from a first transponder, a second signal having a second signal strength;comparing the reference signal strength with the second signal strength; anddetermining that that the first transponder is within a predefined area in response to the second signal strength being greater than the reference signal strength.2. The method of claim 1 , further comprising determining that that the first transponder is outside of the predefined range in response to the second signal strength being less than the reference signal strength.3. The method of claim 1 , further comprising:receiving a third signal from a second reference transponder, the third signal having a third signal strength;wherein the determining the reference signal strength comprises one of the third signal strength or the first signal strength.4. The method of claim 1 , wherein the reference signal strength comprises the first signal strength.5. The method of claim 1 , wherein the determining a reference signal strength comprises defining the predefined area claim 1 , wherein the reference signal strength defines a perimeter ...

RFID COMMUNICATION SYSTEM AND METHOD FOR CONTROLLING SAME

The present disclosure provides a system and method for the continuous operation of an RFID communication system in a user-friendly manner and to ensure the reliability thereof in a cost-effective manner by 1. An RFID communication system , which comprises:at least one active reader for identifying at least one RFID transponder, and at least one inactive reader, wherein the RFID communication system also comprises a management system, which comprises the following:at least one management data bus, via which the management system is in bidirectional data communication with the readers;at least one memory for uploading and storing configuration data from each active reader; for polling an activity status for each active reader at regular time intervals,', 'in the event of an active reader failing, for identifying the failed reader and loading the configuration data for the failed reader from the memory into a specified inactive reader, and', 'for activating the specified inactive reader in place of the failed reader to identify the at least one RFID transponder., 'at least one control unit'}2. The RFID communication system as claimed in claim 1 , wherein the management system comprises a digital routing matrix claim 1 , which is used to connect to one another or disconnect from one another in the signal flow the inputs and outputs of individual components of the RFID communication system claim 1 , for instance the outputs of the antennas and the antenna inputs of the readers claim 1 , and/or the outputs of the readers and the inputs of the data port.3. The RFID communication system as claimed in claim 2 , wherein the routing matrix is additionally suitable for transferring signal data from the at least one RFID transponder between at least two active readers claim 2 , and in particular from the input of an active reader to the output of another active reader.4. The RFID communication system as claimed in claim 1 , wherein the number (n) of inactive readers is less ...

Methods and Apparatus for Multi-Frequency Beamforming

Multiple antennas of a beamformer may simultaneously transmit wireless signals at different frequencies. The signals may comprise synchronized, identical wireless commands, each at a different carrier frequency. The transmitted signals may constructively and destructively interfere with each other at a receiver antenna, to form a beat signal. When the transmitted signals constructively interfere, the beat signal may cause a voltage in the receiver to exceed a threshold voltage. The threshold voltage may be a minimum voltage at which a device, which is operatively connected to the receiver antenna, is able to perform energy harvesting or wireless communication. The beamformer may operate under blind channel conditions, because the transmitted frequencies may be selected in such a way as to maximize peak power delivered under all possible channel conditions. The beamformer may deliver wireless power to a sensor or actuator that is located deep inside bodily tissue. 1. A method comprising transmitting a first set of wireless signals from a first set of antennas of a beamformer during a period of time , in such a way that:(a) each antenna in the first set of antennas transmits a specific signal in the first set of signals, which specific signal is different than that transmitted by any other antenna in the first set of antennas, at least because the specific signal has a carrier frequency that is different than that of each other signal in the first set of signals;(b) the first set of signals has a distribution of carrier frequencies; and(c) the distribution of carrier frequencies maximizes peak power received at a spatial position external to the beamformer, which peak power occurs during a subperiod of the period of time, which subperiod occurs while constructive interference of the signals at the spatial position is at a global maximum for the period of time.2. The method of claim 1 , wherein a backscatter node is located at the spatial position.3. The method of ...

Semiconductor device and communication system

It is an object of the present invention to provide a semiconductor device in which a sophisticated integrated circuit using a polycrystalline semiconductor is formed over a substrate which is weak with heat such as a plastic substrate or a plastic film substrate and a semiconductor device which transmits/receives power or a signal without wires, and a communication system thereof. One feature of the invention is that a semiconductor device, specifically, a processor, in which a sophisticated integrated circuit is fixed to a plastic substrate which is weak with heat by a stripping method such as a stress peel of process method to transmit/receive power or a signal without wires, for example, with an antenna or a light receiving element.

ARRANGEMENT FOR DETERMINING THE PLUGGING POSITION OF A HOSE COUPLING ON A CONNECTION FIELD

An arrangement for determining a plugging position of a hose coupling on a connection field includes the connection field including a plurality of coupling sockets and a plurality of hose couplings in which each of the plurality of hose couplings is coupled to a corresponding one of the plurality of coupling sockets. The at least one hose coupling includes a receiving coil and each of the plurality of coupling sockets includes a transmitting coil. A data interface is disposed in communication with the receiving coil, and an evaluation unit is disposed in communication with the data interface. The receiving coil is configured to analyze an individual identifier retrievable at the transmitting coil during connection of the at least one hose coupling to one of the coupling sockets, and the identifier is transmitted via the data interface to the evaluation unit to determine the plugging position of the hose coupling. 1. An arrangement for determining a plugging position of a hose coupling on a connection field , comprising:the connection field including a plurality of coupling sockets;a plurality of hose couplings in which each of the plurality of hose couplings is coupled to a corresponding one of the plurality of coupling sockets, where at least one hose coupling comprises a receiving coil and each of the plurality of coupling sockets comprises a transmitting coil;a data interface disposed in communication with the receiving coil; andan evaluation unit disposed in communication with the data interface;wherein, the receiving coil is configured to analyze an individual identifier retrievable at the transmitting coil during connection of the at least one hose coupling to one of the coupling sockets, and the identifier is transmitted via the data interface to the evaluation unit to determine the plugging position of the at least one hose coupling.2. The arrangement of claim 1 , wherein the identifier comprises a current signal induced in the receiving coil by the ...

INTERROGATION DEVICE, SYSTEM INCLUDING INTERROGATION DEVICE, AND PROGRAM

An interrogation device includes an interrogation unit that interrogates an RF tag in a contactless manner, and a controller that controls the interrogation unit. The controller obtains a signal strength value and an interrogation success rate from a reception signal received by the interrogation unit when controlling the interrogation unit to transmit a signal with transmission power that is being changed in stages, determines changed transmission power corresponding to a signal strength value and an interrogation success rate that are not less than a threshold selectively from a signal strength value and an interrogation success rate obtained in each stage of the transmission power, and outputs information about the determined transmission power. 1. An interrogation device , comprising:an interrogation unit configured to interrogate an RF tag in a contactless manner; anda controller configured to control the interrogation unit,wherein the controllerobtains a signal strength value and an interrogation success rate from a reception signal received by the interrogation unit when controlling the interrogation unit to transmit a signal with transmission power that is being changed in stages,determines changed transmission power corresponding to a signal strength value and an interrogation success rate that are not less than a threshold selectively from a signal strength value and an interrogation success rate obtained in each stage of the transmission power, andoutputs information about the determined transmission power.2. The interrogation device according to claim 1 , whereinthe controller changes the transmission power for the interrogation unit between a predetermined minimum transmission power and a predetermined maximum transmission power.3. The interrogation device according to claim 2 , whereinwhen the transmission power for the interrogation unit is changed to the maximum transmission power, the controller outputs a warning upon obtaining an interrogation ...

INVENTORY SYSTEM FOR OBJECTS CONTAINED IN A SPACE BOUNDED BY AN ENCLOSURE AS WELL AS AN INVENTORY METHOD IMPLEMENTED BY SUCH AN INVENTORY SYSTEM

An inventory system for objects contained in a space bounded by an enclosure, said system including a tag fixed to each of the objects to be inventoried and a reading point provided with at least one antenna for emitting a wakeup electromagnetic wave confined inside said enclosure so that a tag, on receiving same, becomes active and then emits its identification data intended for said reading point, wherein the system includes means for controlling the emission power of said wakeup electromagnetic wave in accordance with a power-variation model defined by a series of emissions by said or each antenna in stages at power levels different from one stage to another in order to carry out said inventory. The present invention also relates to an inventory method implemented by such an inventory system. 112-. (canceled)13. An inventory system for objects contained in a space bounded by an enclosure , said system comprising: a tag fixed to each of the objects to be inventoried and a reading point provided with at least one antenna for emitting a wakeup electromagnetic wave confined inside said enclosure so that a tag , on receiving same , becomes active and then emits its identification data intended for said reading point , wherein said reading point comprises means for controlling the emission power of said wakeup electromagnetic wave in accordance with a power-variation model relating to the configuration of the enclosure and objects that said enclosure is supposed to contain at the time of the inventory , a power-variation model being defined by a series of emissions by said or each antenna in stages at power levels different from one stage to another in order to carry out said inventory.14. The inventory system according to claim 13 , wherein said reading point is designed to function in a learning mode in which a power-variation model is established for each particular configuration of the enclosure and objects that it contains claim 13 , said power-variation model ...

Methods and Apparatus for Multi-Frequency Beamforming

Multiple antennas of a beamformer may simultaneously transmit wireless signals at different frequencies. The signals may comprise synchronized, identical wireless commands, each at a different carrier frequency. The transmitted signals may constructively and destructively interfere with each other at a receiver antenna, to form a beat signal. When the transmitted signals constructively interfere, the beat signal may cause a voltage in the receiver to exceed a threshold voltage. The threshold voltage may be a minimum voltage at which a device, which is operatively connected to the receiver antenna, is able to perform energy harvesting or wireless communication. The beamformer may operate under blind channel conditions, because the transmitted frequencies may be selected in such a way as to maximize peak power delivered under all possible channel conditions. The beamformer may deliver wireless power to a sensor or actuator that is located deep inside bodily tissue. 1. A system comprising a beamformer , wherein:(a) the beamformer includes a first set of antennas; and (i) each antenna in the first set of antennas transmits a specific signal in the first set of signals, which specific signal is different than that transmitted by any other antenna in the first set of antennas, at least because the specific signal has a carrier frequency that is different than that of each other signal in the first set of signals;', '(ii) the first set of signals has a distribution of carrier frequencies; and', '(iii) the distribution of carrier frequencies maximizes peak power received at a spatial position external to the beamformer, which peak power occurs during a subperiod of the period of time, which subperiod occurs while constructive interference of the signals at the spatial position is at a global maximum for the period of time., '(b) the beamformer is configured to transmit a first set of wireless signals from the first set of antennas during a period of time, in such a way that ...

SYSTEMS AND METHODS FOR FACILITATING A SECURED TRANSACTION BETWEEN A MOBILE DEVICE AND A SERVICE MACHINE

Systems and methods for facilitating transactions between a mobile device and a service machine are disclosed. The system comprises a wireless radio frequency (RF) communication module configured to transmit a RF signal using a RF technology with a given operation range; and a hardware attenuation module configured to attenuate the RF signal to a predefined Transmitted Power Output (TPO) in a first attenuation mode such that communication between the apparatus and the mobile device starts only when the mobile device is positioned relative to the service machine in a detection range that is significantly smaller than the given operation range.

Cellphone controlling a device with a wireless tag

A device has a tag. The device is connected to the Internet and runs a web server. The device controls sensors or machinery. The tag encodes an URL whose address is the device. A person scans the tag with a mobile device, like a phone. The phone queries the server. The page sent to the phone lets her control various aspects of the device. The device lets a maximum number of users actively control it at the same time. Extra users go into a queue with a maximum length. When the queue is full, if the tag is active, it is turned off. The device can have several tags or speakers distributed over different locations, where the speakers emit audio encoding an URL giving a similar control of the device. A tag can be reconfigured if the device changes its Internet address. Or the tag can be periodically reconfigured to favour giving control to users who are currently near it. The URL format can be used by the phone to decide not to make a wireless query to the server. Saves energy on the phone. 1. A system of a device with a tag , where the device is connected to the Internet; where the device runs a server; where the tag encodes an Universal Resource Locator (URL) with an Internet address of the device; where a user with a mobile device scans and decodes the tag; where the mobile device starts a browser with the URL; where the server sends a page to the mobile device; where the page can cause a macroscopic change in the device or its surroundings; where the page can display data from the device.2. The system of claim 1 , where the device permits a maximum number of simultaneous active users; where if this is exceeded claim 1 , extra users are put into a queue; where claim 1 , when an active user is logged out claim 1 , a user in the queue is given active control.3. The system of claim 2 , where the tag is active; where the queue has a maximum length; where if the queue reaches this length claim 2 , the tag is deactivated.4. The system of claim 3 , where when the queue ...

RFID TRANSPONDER QUERYING SYSTEM

Disclosed is a system for electromagnetic interrogation of RFID transponders including at least one RFID transponder, at least one so-called repeater RFID device and at least one RFID terminal, the at least one RFID terminal is configured to emit an interrogation signal towards the at least one repeater at a frequency F, the at least one repeater is configured to repeat the interrogation signal with frequency F towards the at least one RFID transponder at a frequency F and the at least one RFID transponder is configured to emit a backscattered response signal at a frequency F, the system being characterised in that the at least one repeater is configured to perform an exclusively analog frequency transposition from the frequency F to the frequency F 11211230032112112122. A system for electromagnetic interrogation of RFID transponders comprising at least one RFID transponder and at least one RFID terminal comprising at least one RFID reader , the at least one RFID terminal being configured to emit an interrogation signal at a frequency F , wherein the system includes at least one so-called repeater RFID device , in that the at least one repeater is configured to repeat , at a frequency F different from F , said interrogation signal with frequency F , said repeated interrogation signal with frequency F being intended for being received by the at least one RFID transponder , and wherein the at least one RFID transponder () is configured to emit a backscattered response signal at a frequency F in response to receiving said repeated interrogation signal and wherein in order to repeat at a frequency F said interrogation signal with frequency F the at least one repeater is configured to perform an exclusively analog frequency transposition from the frequency F to the frequency F , the at least one repeater comprising a generator of reference signals and the exclusively analog frequency transposition comprising mixing said interrogation signal with frequency F with a ...

INTELLIGENT ENERGY MANAGEMENT SYSTEM AND ENERGY MANAGEMENT METHOD FOR PASSIVE RADIO FREQUENCY TAG

The present invention relates to an intelligent energy management system and an energy management method for a passive radio frequency tag. Digital conversion is performed on the amplitude of a DC signal absorbed and rectified by an inductance coil antenna of the tag, by providing an intelligent energy management module. The input terminal of the intelligent energy management module is respectively connected to a power supply voltage detection and judgment circuit and a demodulator circuit, and configured to judge the level of charge and enabling state of the tag; and the output terminal thereof is respectively connected to a discharge path, a bias current source and an analog circuit module, and configured to bring the analog circuit module into the optimal operating state according to the enabling state of the tag, or to turn-off/get dormant each analog circuit module thus to reduce power consumption of the tag and improve the sensitivity of the tag. Meanwhile, the intelligent energy management module may further control the discharge path to conduct control on discharge of charge at both ends of the antennas, so that the voltage withstanding performance of devices connected to an inductance coil antenna is reliably ensured. 1. An intelligent energy management system for a passive radio frequency tag , comprising:a resonant capacitor, which is connected, between a first antenna terminal and a second antenna terminal, in parallel to a resonant inductor, and configured to form a resonant circuit together with the resonant inductor, receive an external electromagnetic field and couple the external electromagnetic field to a rectifier circuit;a rectifier circuit, the input terminal of which is connected to a first antenna terminal and a second antenna terminal and configured to convert AC power, to which the resonant circuit is coupled, into DC power, the first output terminal of which is output to all analog circuit modules including a demodulator circuit and an ...

DYNAMIC POWER LEVELS IN NFC CARD COMMUNICATIONS

Various embodiments are directed to dynamically and temporarily adjusting power to an NFC reader of a computing device from a first power level to a second power level based on a feedback mechanism between a contactless card and the computing device. The contactless card may provide a message containing a checksum. The computing device may receive the message and calculate a checksum based on the received message. By comparing these two checksums, it may be determined whether the entire message has been correctly received. If not, the power to the NFC reader may be temporarily increased to allow better communication between the contactless card and the computing device. 1. An apparatus comprising:memory for storing instructions; and receive a near field communication data exchange format (NDEF) message from a contactless card via a near field communication (NFC) reader;', 'determine how much of the NDEF message was correctly received by performing a checksum calculation, wherein the checksum calculation is based at least in part on a checksum value included in the NDEF message; and', 'adjust power to the NFC reader based at least in part on the determination of how much of the NDEF message was correctly received., 'one or more processors, coupled with the memory, operable to execute the instructions, that when executed, cause the one or more processors to2. The apparatus of claim 1 , wherein the power to the NFC reader is adjusted if one or more portions of the NDEF message was not correctly received claim 1 , andwherein the adjustment of the power comprises the one or more processors to increase power to the NFC reader from a first power level to a second power level such that a magnetic field emitted from the NFC reader is increased or strengthened.3. The apparatus of claim 2 , wherein the one or more processors is further caused to:receive a subsequent NDEF message from the contactless card at the second power level;determine that the subsequent NDEF message, in ...

Non-contact communication device and non-contact communication method

A noncontact communication apparatus is disclosed which includes: an antenna resonance circuit configured to have a coil for communicating with an opposite party through electromagnetic coupling; a changing block configured to change a Q-factor of the antenna resonance circuit; and a control block configured to control the antenna resonance circuit to transmit and receive data to and from the opposite party at one of a plurality of communication speeds prepared beforehand, the control block further controlling the changing block to reduce the Q-factor the higher the communication speed in use.

RFID Reader and Multiple Access Process using Power Increasing Method

본 발명은 전력 상승기법을 적용하여 복수의 태그를 효율적으로 인식하는 RFID(Radio Frequency Identification) 시스템의 다중 접속 방법에 관한 것으로서, 본 발명에 따른 전력상승기법을 적용한 RFID 리더기는 출력전력을 조절하여 RFID 리더기의 인식범위를 조정하는 전력 조정부, 상기 전력 조정부에 의해 조절된 출력전력으로 질의를 태그에 송신하는 데이터 송신부, 상기 질의를 수신한 태그의 응답 신호를 수신하는 데이터 수신부, 상기 데이터 수신부에 의해 응답 신호가 수신되면 RFID 리더기의 슬롯 상태를 판별하는 슬롯 정보 분석부, 상기 질의에 성공적으로 응답한 태그의 정보를 저장하는 태그 정보 저장부를 포함하며, RFID 리더기의 전력을 조절하여 그 인식거리를 단계적으로 변화시켜 RFID 리더기의 인식영역 내 다수의 태그를 구분하여 인식함으로서 슬롯 사용량 및 전력 소비량을 줄이고, RFID 리더기와 태그 사이의 통신과정에서 발생하는 충돌 현상을 최소화하여 시스템의 효율을 향상시키기 위한 방법이다. The present invention relates to a multiple access method of a radio frequency identification (RFID) system for efficiently recognizing a plurality of tags by applying a power rising technique. An RFID reader using the power rising technique according to the present invention controls an output power to RFID. A power adjusting unit for adjusting a recognition range of the reader, a data transmitting unit transmitting a query to a tag with the output power adjusted by the power adjusting unit, a data receiving unit receiving a response signal of the tag receiving the query, and a response by the data receiving unit A slot information analysis unit for determining the slot state of the RFID reader when receiving the signal, and a tag information storage unit for storing the information of the tag successfully responded to the query, and adjusts the power of the RFID reader to adjust the recognition distance step by step By changing and recognizing a plurality of tags in the recognition area of the RFID reader Reducing the blots usage and power consumption, a method for minimizing the impact that occurs in a communication process between the RFID reader and tag improve the efficiency of the system. RFID, 슬롯, 전력, 알로하, RFID 리더기, 태그, 충돌 RFID, Slot, Power, Aloha, RFID Reader

Use passive and actively measurement generation scene three-dimensional map

提出一种获取三维(3D)地图用于生成3D地图的方法和设备。该方法包括分析由无源传感器获取的至少一幅图像，以识别在至少一幅图像中的多个对象；对多个对象进行分类；基于分类，确定是否被动测量到多个对象中的每一个的距离；基于确定，被动测量到多个对象中的至少一个的距离；主动测量到多个对象中的一些对象的距离，其中当到对象中的一些对象的一个对象的距离不能被动测量时，主动测量到该对象的距离；以及基于测量到多个对象中的每一个的距离生成场景的3D地图。

RFID detection and identification system including an RFID reader having a limited transmit time and a time-out period to protect a medical device against RFID-associated electromagnetic interference

A system is provided for identifying implanted medical devices, leads and systems, as well as objects in close proximity to a patient having an implanted active medical device, using a radio frequency identification (RFID) tag having retrievable information relating to the AIMD, lead system and/or patient. An RFID tag communicator includes a circuit for limiting the total continuous transmit time of an interrogation signal, and a time-out circuit for delaying a second and any subsequent interrogation of the RFID tag.

Thermal printer with quick release cover

公开了同时具有集成的高速RFID编码和验证的高速台式和工业打印机。该工业打印机同时在附接到连续幅材上的RFID标记、标签和/或标贴上打印并且电子地编码/验证该RFID标记、标签和/或标贴。该工业打印机包括用于将打印标引到RFID标签的光敏传感器阵列；以及用于切割其上设置有RFID标签的幅材的由该工业打印机供电的切割机。工业打印机包括两个单独控制的RFID读取器/写入器。具体地，RFID读取器/写入器中的一个包括在幅材移动时对RFID标签进行电子编码的能力；并且第二RFID读取器/写入器使用打印机上另外的RFID模块和天线用于验证编码到RFID标签的数据。进一步地，打印机还包括具有翼形螺钉的快速释放盖，该快速释放盖允许容易的移除。

Systems and methods for automated device pairing

【課題】航空機内の複数の座席ユニットを複数の制御可能装置と電子的にペアリングするための走査システムを提供する。 【解決手段】ＲＦＩＤタグを有する複数の座席ユニット２０２及び複数の制御可能装置２０４に対して移動可能なスキャナ１００と、スキャナ１００の相対位置を求めるように構成された距離センサーと、各受信信号における各ＲＦＩＤタグに関連付けられた固有のＩＤに基づいて、一連の受信信号における異常値を無視して、一連の受信信号を平滑化することにより、固有のＩＤ及び受信信号強度を有するデータポイントを含むとともに、各データポイントについて相対時間及び相対位置が求められている、それぞれの組の受信信号データを各ＲＦＩＤタグについて作成するように構成されたフィルターと、プロセッサと、を含む。 【選択図】図２

Pulsed power method for increased read range for a radio frequency identification reader

A method to power a radio frequency identification (RFID) reader to increase multi-tag reading capability and increase the reading range of a passive tag without maximizing the continuous transmitted power level is provided. The RFID reader transmits a pulsed interrogation signal until an RFID tag response is received, and then switches to a continuous and pulsed power scheme. The continuous power emitted maintains the power supplied to the RFID tags so the tags will not reset due to loss of power. The pulsed signal permits reading the tags at longer ranges, especially when there is a plurality of tags in the area.

Beamforming and localizing in a configurable monitoring device system

一种在询问区中的标签的射频识别系统，其包括：校准节点，该校准节点置于询问区中，以测量来自波束成形系统的射频识别信号的信号强度并且根据该信号强度提供信号数据。阅读器节点被配置为接收所述信号数据，并且基于所述信号数据调整由所述波束成形系统生成的射频识别信号。所述校准节点、所述阅读器节点、以及所述波束成形系统中的至少一个是可配置监视系统。所述校准节点、所述阅读器节点、以及所述波束成形系统被耦合在反馈控制回路中。所述波束成形系统包括多个波束成形节点。根据所述反馈控制回路使至少一个波束成形节点的信号最优化。

RFID reader and device with an RFID reader

RFID-Reader mit wenigstens einer RFID-Antenne und wenigstens einer Anpassschaltung, wobei der RFID-Reader in einer Ausnehmung eines Gehäuses einer Vorrichtung angeordnet ist, wobei das Vorrichtungsgehäuse der Vorrichtung aus einem elektrisch leitfähigen Material gebildet ist, dadurch gekennzeichnet, dass die wenigstens eine RFID-Antenne (6) in einer von dem Vorrichtungsgehäuse (7) gebildeten Ebene (E) angeordnet ist, oder dass die wenigstens eine RFID-Antenne (6) innerhalb des Vorrichtungsgehäuses (7) angeordnet ist, oder dass die RFID-Antenne (7) an der von dem Vorrichtungsgehäuse (7) gebildeten Ebene (E) angrenzend angeordnet ist, dass der RFID-Reader (8) als ein gemäß dem ”EMV®* ConD, EMV Contactless Communication Protocol Specification, Version 2.1, March 2011” arbeitender RFID-Reader ausgebildet ist, dass der RFID-Reader (8) eine Sendeleistung von mehr als 400 Milliwatt (mW) aufweist, und dass eine Güte (Q) für die RFID-Antenne (6) in einem Bereich zwischen Q = 12 und Q = 20 liegt, und dass der im eingebauten... RFID reader with at least one RFID antenna and at least one matching circuit, the RFID reader being arranged in a recess in a housing of a device, the device housing of the device being formed from an electrically conductive material, characterized in that the at least one RFID -Antenna (6) is arranged in a plane (E) formed by the device housing (7), or that the at least one RFID antenna (6) is arranged within the device housing (7), or that the RFID antenna (7) is arranged adjacent to the level (E) formed by the device housing (7) that the RFID reader (8) operates as an RFID device operating according to the "EMV® * ConD, EMV Contactless Communication Protocol Specification, Version 2.1, March 2011" Reader is designed that the RFID reader (8) has a transmission power of more than 400 milliwatts (mW), and that a quality (Q) for the RFID antenna (6) in a range between Q = 12 u nd Q = 20, and that the built-in ...

RFID TRANSPONDER INTERROGATION SYSTEM

INVENTORY SYSTEM OF OBJECTS CONTAINED IN LIMITED SPACE BY AN ENCLOSURE AND AN INVENTORY PROCESS IMPLEMENTED BY SUCH A INVENTORY SYSTEM

La présente invention concerne un système d'inventaire d'objets contenus dans un espace délimité par une enceinte (10), ledit système comprenant un tag (20T) fixé à chacun des objets à inventorier (20) et un point de lecture (30) pourvu d'au moins une antenne (31, 32, 33) pour émettre une onde électromagnétique de réveil confinée à l'intérieur de ladite enceinte (10) afin qu'un tag (20T), à sa réception, devienne actif et émette alors ses données d'identification à destination dudit point de lecture (30). Il est caractérisé en ce qu'il comporte des moyens (41, 42) pour commander la puissance d'émission de ladite onde électromagnétique de réveil conformément à un modèle de variation de puissance défini par une suite d'émissions par ladite ou chaque antenne (31, 32, 33) selon des échelons à des niveaux de puissance différents d'un échelon à un autre afin de réaliser ledit inventaire. La présente invention concerne également un procédé d'inventaire mis en œuvre par un tel système d'inventaire. The present invention relates to a system for inventorying objects contained in a space delimited by an enclosure (10), said system comprising a tag (20T) attached to each of the objects to be inventoried (20) and a reading point (30) provided with at least one antenna (31, 32, 33) for transmitting an awakening electromagnetic wave confined inside said enclosure (10) so that a tag (20T), upon its reception, becomes active and then transmits its identification data to said reading point (30). It is characterized in that it comprises means (41, 42) for controlling the transmission power of said waking electromagnetic wave in accordance with a power variation model defined by a series of transmissions by said or each antenna ( 31, 32, 33) according to steps at different power levels from one step to another in order to perform said inventory. The present invention also relates to an inventory method implemented by such an inventory ...

RFID reader with adaptive carrier cancellation

An RFID reader includes first and second mixers receiving an incoming signal, circuitry for adding a portion of an outgoing signal to an incoming signal, first and second analog feedback loops coupling outputs of the first and second mixers to the circuitry for adding the outgoing signal to the incoming signal. An amount of outgoing signal added to the incoming signal depends on signals in the feedback loops. An RFID reader in another embodiment of the present invention includes a first mixer receiving an incoming signal, a second mixer receiving the incoming signal, an AC-coupled section coupled to the mixer outputs, and a DC-coupled section coupled to the mixer outputs. An RFID reader in another embodiment of the present invention includes an analog loop for adaptive carrier signal cancellation from an incoming signal, and a digital loop for controlling a gain of the incoming signal. Methods are also presented.

Near field communication devices, electronic systems having the same and method of controlling power in near field communication devices

근거리 무선 통신(Near Field Communication; NFC) 장치는 공진부 및 NFC 칩을 포함한다. 공진부는 리더 모드에서 전자기파를 방사하여 외부의 NFC 카드와 데이터를 송수신한다. NFC 칩은 공진부가 전자기파를 방사하는 동안 공진부로부터 생성되는 안테나 전압에 기초하여 NFC 카드와의 거리를 추정하고, 추정된 거리에 기초하여 전자기파의 크기를 제어한다. NFC 장치는 리더 모드에서 소비 전력을 감소시킬 수 있다.

Communication apparatus and computer program product

Disclosed is a communication apparatus comprising: a communication section (18) which performs communication in an ASK modulation format with an RFID tag (30); and a control section (11) which sets a modulation degree of the ASK modulation of the communication section (18) to a large degree when polling of the RFID tag is performed by the communication section (18) and which sets the modulation degree to a small degree when response information is received from the RFID tag through the communication section (18).

Reading apparatus and method for reading information from rfid tag by the same

A reading apparatus includes an antenna, provided under a placing surface on which a placing area is formed. The antenna is configured to radiate radio waves capable of communicating with an RFID tag attached to a commodity placed in the placing area on the placing surface. The apparatus includes a moving module configured to move the antenna in the placing area in parallel with the placing surface, a detector configured to detect a position of the antenna within the placing area, a change module configured to change an output of the antenna according to the position of the antenna detected by the detector, and a reading module configured to read information from the RFID tag via the antenna.

Be used to equipment and the method for the energy supply of transceiver label

一种无线定位系统，其用于供能和/或确定指示分布在追踪区域内的多个收发器标签中的至少一个收发器标签(2)的位置的位置信息，收发器标签用于在收发器标签的位置处存在供能电磁信号时无线地发送标识信号，该系统包括至少一个移动供能器节点(4)，其包括发送器(24)，其用于发送用于至少一个收发器标签(2)的供能电磁信号。移动供能器节点(4)安装在可移动装置(6)上。至少一个接收器(10)用于接收来自收发器标签的标识信号并且至少一个位置评估器(14)用于使用移动供能器节点(4)的位置和/或所接收的所述至少一个收发器标签(2)的标识信号的信号特性来确定位置信息。

System for RFID transponder interrogation by frequency transposition

Disclosed is a system for electromagnetic interrogation of RFID transponders including at least one RFID terminal configured to emit an interrogation signal at a frequency F 1 , at least one RFID device referred to as repeater configured to receive the interrogation signal with frequency F 1 and to repeat same towards at least one RFID transponder at the frequency F 2 , characterized in that the at least one RFID terminal includes at least one RFID reader configured to emit an interrogation signal with frequency F 0 and at least one add-on RFID device configured to perform a frequency transposition from the frequency F 0 to the frequency F 1 , the frequencies F 0 and F 1 being different.

Portable encoded information reading terminal configured to adjust transmit power level

A system and method of adjusting the transmission strength emitted by an integrated RFID reader. The system may stores the location of the RFID when moved proximate to an object as a point of origin. When the RFID reader moves relative to the point of origin, the system may determine the distance of the RFID reader from the point of origin and may adjust the power level of the RFID reader relative to this distance.

Emitting device with low noise, high efficiency and variable power for RFID reader/writer

The device has a power amplifier with a driving device (35), where transmitting power of the amplifier is varied by variation of a transmitting supply voltage, and a modulating level of transmitting signals is varied by variation of the supply voltage. A transmitting supply voltage source (33) is fed by two direct current voltages, in which direct current voltage with high valve determines the amplitude of unmodulated transmitting signals and with low valve determines the amplitude of modulated transmitting signals.

Device and/or method for adaptive computation

Disclosed are methods, systems and devices for varying operations of a transponder device based, at least in part, on an availability of energy and/or power that may be harvested and/or collected. In one particular implementation, operations to generate one or more signals from sensor circuitry and/or to perform computations may be varied based, at least in part, on an availability of harvestable and/or collectable energy and/or power.

System and method for interrogation radio-frequency identification

A system and method for communicating with contactless IC cards of multiple protocols and power levels includes generating a first alternating magnetic field with an interrogator for energizing a proximate IC card and receiving a data transmission from the IC card. A processor (122) of the interrogator (110) is configured to decode the received data transmission. The interrogator then generates a second alternating magnetic field having a different magnetic field strength than the first alternating magnetic field when failing to decode the data transmission being received from the IC card. The processor then attempts to decode a data transmission received from the IC (160) card in response to the second alternating magnetic field.

Device and/or method for adaptive computation

Disclosed are methods, systems and devices for varying operations of a transponder device based, at least in part, on an availability of energy and/or power that may be harvested and/or collected. In one particular implementation, operations to generate one or more signals from sensor circuitry and/or to perform computations may be varied based, at least in part, on an availability of harvestable and/or collectable energy and/or power.

A thermal printer with a quick release cover

A process for printing, encoding and verifying RFID products, using a thermal tabletop and industrial printer device involves: feeding a label in position; fetching data from memory; generating a program command with a data packet; sending the data packet to an RFID reader/writer module; receiving a response packet from the RFID reader/writer module; extracting response data from the response packet; decoding the response data; and electronically encoding the RFID products with data by means of a first RFID reader/writer module while the continuous web is moving, characterized by verifying the data encoded to the RFID tags by means of a second RFID reader/writer module, wherein the second RFID reader/writer module (34) is individually controlled from the first RFID reader/writer module, such that encoding and verifying of the RFID products can be done simultaneously.

METHOD FOR CALIBRATING AN RFID READER AND RFID READER FOR CARRYING OUT SAID METHOD

RFID tag singulation

Disclosed are embodiments of methods, systems, and apparatus for singulating wireless tags. In one embodiment, a power ramping method is provided for tag singulation. This embodiment involves activating a control of an RFID reader for engaging power to begin reading RFID tags. The first reading is taken at a relatively low transmitting power level. If an RFID tag is not detected at the first power level, the power from the RFID reader is increased to a second higher power level. Increasing the transmitting power may be repeated until there is a final read volume where a single RFID tag, or a select number of such tags, is detected. Certain embodiments may provide for ramping the power down as well as up, so that if multiple tags are detected and only the closest tag is desired to be detected, tags can be excluded systematically from the read volume until only a single tag remains.

Method and system for sharing power in a multiple radio frequency network node RFID tag

In embodiments of the present invention improved capabilities are described for a radio frequency identification (RFID) tag substrate for the mounting of a plurality of RF network nodes. In this way, data communications among the plurality of RF network nodes may be coordinated such that the plurality of RF network nodes act as a single RFID tag when interrogated by an RFID reader, and where power may be shared amongst the plurality of RF network nodes.

Robotic generation of a marker data mapping for use inventorying processes

Systems and methods for creating a data mapping to be used in a subsequent inventorying process to locate objects within an area. The methods comprise: identifying, by a robot, at least one first marker disposed within the area which should be re-programed; autonomously transforming, by the robot, a first programmed state of the at least one first marker to a second programmed state, and autonomously creating, by the robot, the data mapping specifying a current physical location of the at least one first marker which was re- programed and current physical locations of second markers also disposed within the area.

Reading device and control method, terminal device

本发明公开了一种读取装置及控制方法、终端设备，其能够有效地进行附加在读取对象的商品上的RFID标签的读取，该读取装置包括：设置在读取对象的商品被载置的载置区域的下部，用于放射可与该商品所附加的RFID标签通信的电波的天线、使所述天线与所述载置区域的载置面平行地在该载置区域内移动的移动部、检测出在所述载置区域内的所述天线的位置的检测部、根据所述检测部检测出的所述天线的位置，对该天线的输出进行变更的变更部以及通过所述天线从所述RFID标签读取信息的读取部。

Systems and methods for automated device pairing

A system is provided that includes a scanner movable relative to seat units and controllable devices each having RFID tags, the scanner configured to obtain a continuum of received signals, a distance sensor configured to determine a relative position of the scanner, a filter configured to disregard outliers and smooth the continuum into respective sets of received signal data, wherein each set of received signal data includes data points having a unique ID and a received signal strength, and wherein a relative time and a relative position are determined for each data point, and a processor configured to determine a relative location of each RFID tag, based on the relative position associated with maximum received signal strength within the set of received signal data, and generate a data file including pairings of seat units and associated controllable devices based on similar relative positions of RFID tags.

Tag reader

複数のタグを効率よく読み取ることができるタグ読み取り装置。このタグ読み取り装置は、出力パワー制御部（１０９）により、出力パワー設定部（１０８）において設定した出力パワーで送信データを送信するように、制御信号により送信部（１０１）の出力パワーを制御する。読み取り可能なエリアに多数のタグが存在しタグ同士のＩＤがぶつかってコリジョンが多数発生する場合、まず、送信部（１０１）の出力パワーを絞り、リーダ（１００）の読み取り可能なエリアを狭めてコリジョンの発生を抑え、リーダ（１００）の読み取り可能なエリアに存在する未読タグの数が少なくなってきたら、再送信時の送信部（１０１）の出力パワーを上げ、リーダ（１００）の読み取り可能なエリアを広げて、残りのタグを効率よく読み取っていく。 A tag reader that can efficiently read a plurality of tags. In this tag reading device, the output power control unit (109) controls the output power of the transmission unit (101) by the control signal so as to transmit the transmission data with the output power set in the output power setting unit (108). . When there are many tags in the readable area and IDs between tags collide with each other and many collisions occur, first, the output power of the transmission unit (101) is narrowed down to narrow the readable area of the reader (100). When the occurrence of collision is suppressed and the number of unread tags existing in the reader (100) readable area decreases, the output power of the transmission unit (101) at the time of retransmission is increased, and the reader (100) can be read. Expand the area and read the remaining tags efficiently.

System for verifying position of the robot using rfid and method therefor

A system and a method for recognizing a current position of a mobile robot with RFID(Radio Frequency IDentification) are provided to enable the autonomous mobile robot to recognize the current position correctly and quickly in a remote place by transceiving a UHF(Ultra High Frequency) band signal with RFID tags installed in a predetermined space and adjusting RFID transmission power. An RFID tag(100) stores ID/location information of a moving path, and retransmits a UHF band signal in a reflection wave form and generates DC power by receiving the UHF band signal from a mobile robot(200). The mobile robot moves along a predetermined path and performs an ordered operation by checking a current position based on the ID/position information received from the RFID tag. The mobile robot includes an RFID reader(210) transmitting the UHF band signal to the RFID tag, obtaining the position information including intensity, a reception time, and a reception direction of the signal by demodulating the signal received from the RFID tag, and transmits the UHF band signal after attenuation or amplification, a robot controller(220) measuring the distance and the direction from the RFID tag by calculating the current position, a transmission power generator(230), a robot memory(240), a robot driver(250), and antenna(260).

Wireless smart card detection and selection

Noncontact communication apparatus and noncontact communication method

公开了一种非接触式通信装置，包括：天线谐振电路，被配置成具有用于通过电磁耦合与相对方通信的线圈；改变块，被配置成改变所述天线谐振电路的Q因子；和控制块，被配置成控制所述天线谐振电路以预先准备的多个通信速度之一将数据发送到所述相对方和从所述相对方接收数据，所使用的通信速度越高，则所述控制块进一步控制所述改变块减小所述Q因子。

Asset tracking system

An asset tracking system that has a master notification unit, a reader relay unit in communication with the master notification unit, and a tag configured to be coupled to an asset. When the reader relay unit identifies a tag, the reader relay unit sends a signal to the master notification unit providing both a tag identifier and a reader relay unit identifier.

RFID tags enforcing persistence while powered

RFID tags may compensate for non-RFID power sources by automatically enforcing data or state persistence even while powered. A tag may measure a time interval between successive detected modulated reader transmissions. If the interval exceeds a minimum time, then the tag may deassert a protocol flag, erase data, and/or change tag operating states, even if the tag would normally not perform these actions while powered.

A thermal printer with a quick release cover

A high speed tabletop and industrial printer is disclosed with integrated high speed RFID encoding and verification at the same time. The industrial printer simultaneously prints on and electronically encodes/verifies RFID labels, tags, and/or stickers attached to a continuous web. The industrial printer comprises a lighted sensor array for indexing the printing to the RFID tags; and a cutter powered from the industrial printer for cutting the web that the RFID tags are disposed on. The industrial printer comprises two RFID reader/writers that are individually controlled. Specifically, one of the RFID reader/writers comprises the ability to electronically encode the RFID tags while the web is moving; and the second RFID reader/writer uses an additional RFID module and antenna on the printer for verifying the data encoded to the RFID tags. Further, the printer also comprises a quick release cover with thumbscrews that allow for easy removal.

Multidimensional sieving for high density low collision RFID tag fields

A system comprising an RFID Reader and an array of RFID Tags, where the tags have the ability to measure physical signal properties such as FM deviation and Received Signal Strength as examples and use these measurements to create a means to refrain from responding to the Reader, unless the measured values fall inside a range determined by a built in algorithm or decision tree or by the Reader and transmitted to the array of Tags in an outbound message. The system may also use non-physical parameters, including tokens sent by the Interrogator/Reader to the Tag field. Moreover, physical parameters may be divided into maskable and unmaskable parameters. Signal frequency is not maskable by the environment, for example, but signal amplitude and phase are maskable by the environment during propagation. Additionally, the number, the nature and the range of each Multidimensional Variable are set by the Interrogator at the start of a session. In this way, foreknowledge or good estimates of the tag population will lead to higher efficiency operation.

A device, method and system for efficiently powering a near field communication device

A device, method and system for efficiently powering a near field communication device are provided. The devices comprises: a module configured to: exchange data with a near field communication (NFC) device; and transmit energy to the NFC device; and, a processor configured to: receive, using the module, energy data from the NFC device, the energy data comprising data for determining a difference between a current energy level of an energy storage apparatus at the NFC device and a given amount of energy for performing a given function at the NFC device; determine the difference from the energy data; and, transmit, using the module, an amount of energy corresponding to the difference, to the NFC device.

Intelligent energy management system and energy management method for passive radio-frequency tag

一种无源射频标签的智能化能量管理系统（1）与能量管理方法，通过设置智能化能量管理模块（4）对标签的电感线圈天线所吸收并整流后的直流信号幅度进行数字化转换，所述智能化能量管理模块输入端分别连接至电源电压探测与判定电路（3）和解调电路，用于判别标签所处于的电荷水平及使能状态，其输出端分别连接至放电通路、偏置电流源（5）及模拟电路模块（6），用于根据标签所处于的使能状态使模拟电路模块（6）处于最优化的工作状态，或者是关断/休眠各模拟电路模块，以达到降低标签功耗和提高标签灵敏度的目的。同时，所述智能化能量管理模块还可以控制放电通路对天线两端的电荷进行泄放控制，使得与电感线圈天线所连接的器件的耐压得以可靠的保证。

RF Identification System with Restricted Range

A method of adjusting the 2-way communication range of an RFID system to assist a human operator to individually handle and interrogate a plurality of tagged objects, such as suitcases, that each include an RFID tag transceiver. An RFID interrogator transceiver is mounted on the human operator. The 2-way communication range between the interrogator transceiver and the tag transceivers is adjusted to only slightly exceed the closest distance between the interrogator and the tag while the operator is handling the tagged object. Preferably, the 2-way communication range is short enough that other tagged objects will remain outside the communication range and will not respond to messages from the interrogator. Another aspect of the invention is a method of verifying whether an object to be transported has reached its intended destination. In this aspect, an interrogator transceiver at a first destination interrogates an RFID tag transceiver on the object, and in response the tag transmits its intended destination.