Entries |
Document | Title | Date |
20080197981 | INTEGRATED CIRCUITS WITH PERSISTENT DATA STORAGE - The circuitry introduced in this invention selectively slows down the functioning of an electronic circuit maintaining a particular state for a prolonged period of time. This circuitry is used not only to achieve the desired effect in maintaining security from electronic thieves trying to circumvent codes but also in other applications such as enabling a circuit to continue to function in the event of a brief loss of power. For example, in an RFID system, if a reader is frequency hopping, a tag loses power for as long as about 400 milliseconds when the reader changes to other frequencies. In a preferred embodiment, the disclosed circuitry is used in conjunction with a destruct sequence. | 08-21-2008 |
20080204200 | Systems and methods of locating raido frequency identification tags by radio frequencey technology - Methods and systems with one or more mobile transceivers to locate position of radio frequency identification (RFID) tags via radio frequency (RF) technology are disclosed. The systems called RF Locator (RFL) include at least one mobile RF transceiver and other functional components such as, a globe positioning system (GPS), a processor, and a display. Information of space positions, times and physical characteristics related to RF signals are collected sequentially by the mobile transceiver(s) during RFID tag locating process. The processor calculates the location of the RFID tag by using the collected information. Two methods to determine the location of the RFID tag are disclosed in this invention. The first method is to utilize the information of space positions and times. The second method is to use the information of space positions and RF signal characteristics. | 08-28-2008 |
20080211635 | Rfid Reader With An Antenna And Method For Operating The Same - An RFID reader ( | 09-04-2008 |
20080218315 | Electronic Component Comprising a Modulator - The invention relates to an electronic component, in particular and RFID transponder, and also a security document comprising such an electronic component. The electronic component has a modulator for modulating a carrier signal, said modulator being constructed from at least two organic field effect transistors ( | 09-11-2008 |
20080224827 | Pest control techniques - A pest control system ( | 09-18-2008 |
20080238628 | FREQUENCY SYNTHESIZER AND FREQUENCY SYNTHESIZING METHOD - A frequency synthesizer for providing clock signals with different frequencies for corresponding band transceivers and associated frequency synthesizing method are provided. The frequency synthesizer includes a phase-locked loop module having a single voltage controlled oscillator, a first frequency divider and a second frequency divider. At first, the single voltage controlled oscillator is activated to generate a primary clock signal. The first frequency divider frequency-divides the primary clock signal to generate a first clock signal for a first band transceiver. The first clock signal is further frequency-divided into a second clock signal for a second band transceiver. Therefore, the frequency synthesizer with the single voltage controlled oscillator can generate clock signals covering more than one frequency band. | 10-02-2008 |
20080252426 | Intelligent Rfid System For Low Powered Reader-Tag Communication and Method Thereof - The present invention relates, in general, to a Radio Frequency Identification (RFID) system for reading or recording RFID tag information using radio frequencies and, more particularly, to an intelligent RFID system for low-powered reader-tag communication, which includes an RF shower system ( | 10-16-2008 |
20080258877 | Secure Self Scan - This invention includes the system and method for the manufacture and use of a hermetically sealed Faraday cage in the retail/consumer goods environment. It is called the “Secure Self Scan” and is constructed using meshed glass, sheet metal and edge level elastomers as agents of containment and reflection. The utility of this invention is that it prevents unauthorized access to communication protocols between RFID tagged consumer items and an RFID interrogator. It also prevents unauthorized access to communication protocols between an RFID interrogator and contact less smart card. This invention takes the mal ware writer and hacker plus the skimmer and eavesdropper out of the RFID equation in relationship to consumer goods, contact less smart cards and consumer privacy. Furthermore, this invention magnifies RFID interrogation signals within the Secure Self Scan unit thereby increasing read rates while concurrently obviating external electro magnetic interference, also known as noise, thereby increasing RFID tag read rates. | 10-23-2008 |
20080266059 | Quadrature demodulator and interrogator - A quadrature demodulator generates an I-signal from a modulated reception signal and a local signal, generates a Q-signal from the local signal and the local signal having a phase shifted through 90 degrees. Capacitors remove DC components from the I- and Q-signals. Low-pass filters remove frequency components higher than the frequencies of the I- and Q-signals. An I-signal squaring section squares the I-signal having passed through the low-pass filters. A Q-signal squaring section squares the Q-signal having passed through the low-pass filters. An adding section adds the squared I-signal and the squared Q-signal together. A comparator then compares the level of an S | 10-30-2008 |
20080272892 | Sampling to obtain signal from RFID card - A radio frequency identification (RFID) reader of an apparatus in an example employs substantially synchronized sampling to obtain a signal from an RFID card notwithstanding employment by the RFID card of any of amplitude shift keying (ASK), frequency shift keying (FSK), or phase shift keying (PSK). The RFID reader decodes the signal notwithstanding the employment by the RFID card of any of ASK, FSK, or PSK. | 11-06-2008 |
20080278291 | Radio-Frequency Tag Communication System - A radio-frequency tag communication system including (a) a radio-frequency tag, (b) a radio-frequency tag communication device configured to transmit a transmitted signal toward the radio-frequency tag, and to receive a reply signal transmitted from the radio-frequency tag in response to the transmitted signal, for thereby effecting radio communication with the radio-frequency tag, and (c) at least one reference tag disposed fixedly in an area of communication of the radio-frequency tag communication system and configured to transmit a reply signal in response to the transmitted signal, for thereby effecting radio communication with the radio-frequency tag communication device, and wherein the radio-frequency tag communication device includes a directivity control portion configured to control a directivity of communication with the radio-frequency tag, on the basis of a result of the radio communication of the radio-frequency tag communication device with the at least one reference tag. | 11-13-2008 |
20080278292 | Wireless Tracking System And Method Utilizing Tags With Variable Power Level Transmissions - The present invention provides a solution to mistaken location calculations based on multipath effects. The present invention utilizes tags attached to objects that transmit signals at various power levels for reception by sensors stationed throughout a facility. Sensor readings at the various power levels are utilized to determine the location of the tagged object. | 11-13-2008 |
20080290996 | PIPELINING PROCESSES IN A RF READER - The present disclosure includes a method and system for pipelining processes in an RF reader. In some implementations, a method includes receiving, from a transponder, a reply to an initial command. A physical (PHY) layer and a media control access (MAC) layer are pipelined to initiate transmission of a subsequent command during demodulation of the transponder reply. | 11-27-2008 |
20080315998 | Trigger Arrangement for a Multi-function Device - Described is a device including a first functional component, a second functional component and a control unit coupled to and capable of activating the first and second components. The device further includes a trigger arrangement coupled to the control unit, and at least one sensor coupled to the control unit and capable of detecting when the trigger arrangement is in one of a first triggering position and a second triggering position. When the at least one sensor detects that the trigger arrangement is activated and in the first triggering position, the control unit activates the first component and when the at least one sensor detects that the trigger arrangement is activated and in the second triggering position, the control unit activates the second component. | 12-25-2008 |
20090015383 | Inductively coupled extension antenna for a radio frequency identification reader - Systems and methods are described for adapting a portable RFID reader to create a portable RFID reader assembly that includes an extension antenna. In many embodiments, the extension antenna can be added to increase the reach of the portable RFID reader. The extension antenna is inductively coupled to the portable RFID reader and in many embodiments, the extension antenna is retrofit to an existing portable RFID reader. In other embodiments, a portable RFID reader and one or more extension antennas are produced as part of a set. One embodiment of the invention includes a reader having reader circuitry configured to generate an activation signal, a first antenna, where the first antenna is electrically connected to the reader circuitry, a reader housing containing the reader circuitry, an extension antenna including an elongated housing, a second antenna located at one end of the housing, and a third antenna located at the opposite end of the housing, where the second antenna is electrically connected to the third antenna. In addition, the first antenna and second antenna are inductively coupled. | 01-15-2009 |
20090033469 | Remote Detector And Method And Use Of A Remote Detector - The invention relates to a remote detector or sensor system. The system comprise a reading device ( | 02-05-2009 |
20090045922 | Data collection system having EIR terminal interface node - A network accessible node that facilitates management of a fleet of portable communication devices (EIR terminal), including portable data terminals and/or barcode readers, by directing performance of software upgrade and/or configuration update actions by one or more members of the fleet of EIR terminals. | 02-19-2009 |
20090045923 | Wireless Communication System - An electronic tag ( | 02-19-2009 |
20090079547 | Method, Apparatus and Computer Program Product for Providing a Determination of Implicit Recommendations - An apparatus for providing a determination of implicit recommendations may include a processing element. The processing element may be configured to receive sensor data from at least one sensor, determine context information associated with the at least one sensor, and determine an implicit recommendation based on the sensor data and the context information. | 03-26-2009 |
20090085723 | Computer application interface to radio-frequency identification data - An interface to radio-frequency identification (RFID) data provides RFID data in response to an event cycle specification received from an application. The interface is configured to receive the event cycle specification that identifies one or more RFID sources. The event cycle specification also includes a boundary specification that defines a boundary for an event cycle and a report specification that defines a requested output of a non-redundant RFID data. The interface to RFID data, in response to receiving the event cycle specification, provides an output of non-redundant RFID data conforming to the event cycle specification. | 04-02-2009 |
20090102611 | WIRELESS DISPOSABLE PHYSIOLOGICAL SENSOR - A patient physiological parameter monitoring apparatus for a subject includes a sensor assembly having at least one responsive element that produces a first signal upon detection of a change in temperature. The assembly also includes a converter for converting the first signal into an electrical signal, and a transmitter for wirelessly transmitting converted electrical signals upon demand based upon receipt of a transmitted signal from an interrogation device. Preferably, at least a portion of the sensor assembly is disposable to permit single use or single subject use and can be further used to track location and information of medical equipment in addition to subjects. | 04-23-2009 |
20090128300 | WIRELESS DEVICE WITH AN RFID INTERROGATOR - A wireless device includes an antenna, a radio unit, a signal processing unit, a control unit and a radio frequency identification (RFID) interrogator having a programmable memory. The programmable memory is programmed to interrogate an RFID device located within a discrete range from the RFID interrogator at user-selectable time intervals and to generate an alert upon loss of a return signal to the RFID interrogator when the RFID device is out of the discrete range. | 05-21-2009 |
20090134976 | APPARATUS AND METHOD FOR PROCESSING DATA IN TRANSMITTING AND RECEIVING END OF RFID SYSTEM - A data receiving and processing system includes: an RF front-end circuit, for receiving an analog signal and generating received data; a processing unit, coupled to the RF front-end circuit, for performing processing on the received data; and a buffering circuit, coupled between the processing unit and the RF front-end circuit, for buffering the received data; wherein data transmitted between the RF front-end circuit and the buffering circuit is serial data, and data transmitted between the buffering circuit and the processing unit is parallel data. | 05-28-2009 |
20090134977 | Method and apparatus for RFID device coexistance - In accordance with exemplary embodiments, a radio frequency identification (RFID) device might employ channel-in-use sensing and time multiplexing transmission to prevent radio systems of RFID devices in close proximity to one another from transmitting while another one of the RFID devices is transmitting so as to reduce, for example, radio interference at the transmitting RFID device. RFID transceivers not transmitting might employ a random back off procedure once a close proximity transmission is detected so that the RFID devices do not repetitively try to seize the channel at approximately the same time. | 05-28-2009 |
20090146792 | RFID SYSTEMS USING DISTRIBUTED EXCITER NETWORK - RFID systems are disclosed that include at least one RFID receiver system and a distributed exciter architecture. The exciters can be connected via wired and/or wireless connections to the RFID receiver system and the RFID receiver system can control the activation of the exciters to detect the presence of RFID tags within interrogation spaces defined by the exciter topology. In several embodiments, the RFID receiver system performs location estimation to determine the interrogation space in which a specific RFID tag or collection of RFID tags is located. One embodiment of the invention includes an RFID receiver system configured to detect information from RFID tags within a receive coverage area, and a plurality of exciters defining a plurality of interrogation spaces within the receive coverage area of the RFID receiver system. In addition, the RFID receiver system is configured to transmit a control signal that identifies one of the plurality of exciters and includes information indicative of an RFID tag interrogation signal, the plurality of exciters are configured to receive the control signal, and the exciter identified in the control signal is configured to illuminate an interrogation space with the RFID tag interrogation signal. | 06-11-2009 |
20090160620 | Smartbeam Visibility Network - A method for providing real-time visibility on a construction project includes steps of: attaching a low-frequency, ultra low-power, two-way transceiver radio tag to each construction material to be used in the construction project; storing data relating to the construction material in the tag; and reading the data from the transceiver of the tag by interrogating the radio tag with radio frequency interrogation signals. | 06-25-2009 |
20090167502 | Device for verifying a location and functionality of a radio-frequency identification (RFID) tag on an item - A Radio-Frequency Identification (RFID) system verifies proper placement and functionality of RFID tags with respect to particular end-use RFID systems at the time the RFID tag is applied to an item but before the item is deployed. A device for verifying a location and functionality of an RFID tag on an item includes an item holder, a power coupling mechanism attached to the item holder, and an RFID reader electrically connected to the power coupling mechanism. The power coupling mechanism creates a near field for transmission of read or write commands from the RFID reader to an RFID tag on an item placed on the item holder to verify the location and functionality of the RFID tag as applied to the item with respect to a near-field coupling mechanism of a particular end-use RFID system. The device may include additional power coupling mechanisms for testing the functionality of the tag. | 07-02-2009 |
20090189740 | METHOD AND SYSTEM FOR DETECTING VITAL SIGNS OF LIVING BODIES - Method and system for detecting vital signs of living bodies in particular in visually obstructed areas by means of illuminating the area of interest with interrogating multifrequency electromagnetic signal. The reflected energy is phase demodulated in quadrature separately on every frequency and analyzed on presence of respiration and heartbeat signature, whereby pairs of frequencies with the same relationship of quadrature components are used for ranging. A system for detecting vital sings of living bodies includes a means of generating said interrogating signal, a transmit antenna, a receive antenna, a multichannel quadrature mixer and multichannel FFT analyzer. The quadrature components so obtained can be processed jointly or separately and monitored on a multistrip waterfall diagram or as a multichannel spectrum plot. | 07-30-2009 |
20090195362 | RFID SYSTEM AND METHOD TO MONITOR A SET OF OBJECTS - The present disclosure relates generally to RFID systems and methods. In particular the present disclosure relates to an RFID system and method for insuring the proximity of the members of a set of designated objects. | 08-06-2009 |
20090212920 | INTELLIGENT ASSET PROTECTION SYSTEM - An intelligent asset protection system is claimed and disclosed which features a plurality of devices are used to protect a retail establishment by radiating and detecting into a protection zone to identify transponders within a given area. These devices that radiate and detect are typically located in the ceiling or above the area that is desired to be monitored and create a cone shaped interrogation field which expands as it is broadcast downward into the monitored area. In communication with the RAD units, the system uses transponders capable of storing information which includes passwords and unique identifiers as well as information about the object to which the transponder is attached. The transponder is capable of responding to a RAD unit and broadcasting information to it which may include the information stored on the transponder. The transponder in some embodiments will have a battery located on board, but the transponder will remain in an inactive sleep mode until a RAD unit contacts it with a radiated | 08-27-2009 |
20090219142 | RFID SYSTEM AND METHOD OF TRANSMITTING LARGE DATA OF PASSIVE RFID - Provided are a radio frequency identification (RFID) system including an RFID reading apparatus and a passive RFID tag and a method of transferring and/or processing data using the same. An RFID reading apparatus includes a data input unit which receives data to be transferred to a passive RFID tag, a control unit which generates a transmission packet containing the data and a command directing data transfer, and a communication unit which converts the generated transmission packet into an RF signal and transfers the converted RF signal to the passive RFID tag. | 09-03-2009 |
20090231107 | Testing device - A control device that specifies an output level to a reader/writer configured to supply an electrical signal corresponding to a radio signal to a stripline cell for transmitting the radio signal to an RFID tag and that has unique output characteristics. The control device includes a response analyzing section that checks the existence of a reaction in the RFID tag; and a distance calculation processing section that uses the output characteristics of the reader/writer from the output level specified to the reader/writer to obtain an electric field strength of the radio signal received by the RFID tag and that converts the electric field strength to a distance between a predetermined antenna and the RFID tag, the antenna transmitting the radio signal with a predetermined output and the RFID tag receiving the radio signal at a same electric field strength as the electric field strength. | 09-17-2009 |
20090237217 | PACKAGING BOX, PACKAGING MATERIAL, TAG ID READING METHOD, AND TAG ID TRANSMITTING PROGRAM - A packaging box includes a body which has a top surface, a base, and a side, first and second signal conductors, and an RFID tag. The first signal conductor is provided on a first region of the body. The second signal conductor is provided on a second region of the body. The RFID tag is attached to the side in a third region as being electrically insulated from the first and the second signal conductors with a first electrode thereof connected to the first signal conductor and a second electrode thereof connected to the second signal conductor. | 09-24-2009 |
20090237218 | WIRELESS COMMUNICATION DEVICE - Embodiments relate to a wireless communication device. The embodiment provides a wireless communication device comprising: a reception signal processor demodulating a received signal; a first signal state detector detecting a reception state of a first signal from the received signal; a second signal state detector detecting a reception state of a second signal from the received signal; a transmission signal processor modulating a transmission signal; and a controller controlling a change of a frequency of a channel transmitted to the transmission signal processor depending on a reception state of at least one of the first signal of the first signal state detector and the second signal of the second signal state detector. | 09-24-2009 |
20090256684 | COMMUNICATIONS SYSTEM AND MEMORY CARD - Disclosed herein is a communications system in which a transponder having no radio wave generating source executes data transmission with a reader/writer. The transponder is incorporated in a memory card having a memory with which the reader/writer reads and writes information the memory card being used as loaded in a dedicated slot of a host device. The reader/writer transmits a beacon signal telling a service area at a predetermined time interval. The memory card waits for a beacon signal from the reader/writer within a preset period of time after the host device loaded with the memory card is powered on, executes a connection establishment procedure with the reader/writer upon reception of the signal within the preset period of time and, if the beacon signal has not been received within die preset period of time, enters a sleep state in which at least a wait state of the transponder is stopped. | 10-15-2009 |
20090261952 | READER/WRITER, COMMUNICATION PROCESSING DEVICE, COMMUNICATION PROCESSING METHOD, DATA MANAGEMENT SYSTEM AND COMMUNICATION SYSTEM - A communication processing device includes a control unit for, when receiving an address update request signal including a segment identifier for identifying a segment address of a recording unit from a reader/writer, holding the segment identifier in a RAM, and when receiving a readout request signal including an offset address having the segment as a reference from the reader/writer, transmitting to the reader/writer data recorded in a region specified by an address having the offset address contained in the readout request signal as offset with the segment address identified in the segment identifier as a reference of the regions of the recording unit. | 10-22-2009 |
20090267745 | READER FOR WIRELESS IDENTIFICATION IC TAG AND WIRELESS IDENTIFICATION IC TAG SYSTEM - A reflected electromagnetic wave received, for example, from a wireless identification IC tag through an antenna ( | 10-29-2009 |
20090273448 | Computer With RFID Interrogator - Methods and apparatus, including computer program products, for a computer with a radio frequency identification (RFID) reader. A system includes a processor, a store of codes representing goods and services cross-referenced to supplemental information, a radio frequency identification (RFID) interrogator, an input/output tag (IO), and a memory including a process that matches a received code from the RFID interrogator to a code in the store of codes and to display supplemental information of a good or service on the IO tag. | 11-05-2009 |
20090284354 | Multiplexing Radio Frequency Signals - The present disclosure is directed to a system and method for multiplexing radio frequency signals. In some implementations, a system includes a host coupling module, a plurality of antennas, and a processing module. The host coupling module is configured to receive and transmit RF signals through a wired connection. The plurality of antennas are configured to wirelessly transmit RF signals and receive RF signals from RFID tags. The processing module is configured to selectively switch between the plurality of antennas for communication with the RFID tags using the host coupling module and backscatter at least a portion of the received RF signals through the wired connection to communicate information independent of an internal power supply. | 11-19-2009 |
20090289771 | RFID Device Using Single Antenna For Multiple Resonant Frequency Ranges - An RFID device utilizing a single antenna for multiple resonant frequency ranges. RFID device that can include an RFID circuit, and a single antenna coupled to the RFID circuit. The antenna can be configured to operate within multiple frequency ranges for communicating with at least one RFID interrogator according to respective protocols associated with each respective frequency range. | 11-26-2009 |
20090303016 | Method for Commissioning an RFID Network - The invention relates to a method for implementing an RFID network, comprising the following steps: each read-write station transmits at least one test signal; each read-write station ( | 12-10-2009 |
20090322487 | DETERMINING ENDPOINT CONNECTIVITY OF CABLING INTERCONNECTS - In a communication network or system, cables that interconnect systems or subsystems are provided with RFID tags embedded or affixed at least at one endpoint of each cable. An installed or portable RFID reader in the proximity of an RFID tag of a given cable enables a unique cable endpoint identifier contained in the RFID tag to be read. The identifier is combined with a unique port identifier of the port to which the cable endpoint is attached at the message is sent to a far-end system or subsystem connected to the other end of the cable. That system reads the message and the information contained therein along with a unique port identifier of its own port connected to the given cable, enables positive confirmation of the communicative connection between the two ports and also the cable providing the connection. It also enables communication of the physical routing information to an operations support system for cable management. | 12-31-2009 |
20090322488 | WIRELESS DATA COMMUNICATION SYSTEM HAVING RADIO FREQUENCY DEVICES, AND RELATED OPERATING METHODS FOR DISABLING A TRANSMIT MODE - A wireless system suitable for use as a radio frequency (RF) locationing or presence detection system includes at least one wireless access device and at least wireless device, such as an active RF tag, corresponding to an item or asset of interest. A method of managing RF transmissions by the wireless devices is provided. The method involves the wireless device receiving keep-alive beacons during a first period of time. During this first period of time, the wireless device is operated in a transmit mode. During a second period of time that follows the first period of time, the wireless device receives no keep-alive beacons. During this second period of time, the wireless device is operated in a standby mode such that RF transmissions are disabled. | 12-31-2009 |
20090322489 | MACHINE VISION RFID EXCITER TRIGGERING SYSTEM - Systems and methods are described for triggering interrogation of RFID tags by an RFID system in different interrogation spaces in response to detection of the presence and/or motion of an object using a machine vision system. One embodiment of the invention includes an RFID exciter configured to communicate with a master controller, where the master controller is configured to control activation of the RFID exciter and a video camera connected to an application server, where the application server is configured to communicate with the master controller. In addition, the video camera is configured to provide a video sequence of a scene to the application server, the application server is configured to store information concerning a region of interest within the scene, the application server is configured to detect motion within the region of interest using the video sequence, the application server is configured to send a trigger message to the master controller in response to the detection of motion within the region of interest, and the master controller is configured to activate the RFID exciter in response to receipt of a trigger message from the application server. | 12-31-2009 |
20090322490 | RADIO FREQUENCY IDENTIFICATION MONITORING SYSTEM AND METHOD - The present invention provides a radio frequency identification (RFID) monitoring method, a reader located in a region to receive a tag ID code from a RFID tag, wherein the method comprises the steps of: (a) sending out a first reading signal from the reader; (b) determining whether the tag ID code is received by the reader; (c) recording a position of the RFID tag in a plane when the tag ID code is received by the reader; (d) rotating the reader a second angle toward a direction perpendicular to the plane; (e) sending out a second reading signal from the reader; (f) determining whether the tag ID code is received by the reader; and (g) recording a position of the RFID tag in the direction when the tag ID code is received by the reader. | 12-31-2009 |
20100007471 | Apparatus for reading RFID tag - This disclosure discloses an apparatus for reading with a radio frequency identification (RFID) tag comprising: a plurality of information creation devices, capable of generating a plurality of types of command signals for making an access to an RFID tag circuit element having an IC circuit part storing information and a tag antenna that transmits and receives information; a plurality of apparatus antennas connected to the plurality of information creation devices, respectively, and configured to transmit the plurality of types of command signals to the RFID tag circuit element via radio communication substantially at the same timing; and a single information processing device configured to obtain reading information by means of receiving processing of a response signal transmitted from the RFID tag circuit element according to the command signal transmitted from the apparatus antenna and received by the apparatus antenna. | 01-14-2010 |
20100045442 | RFID Privacy-Preserving Authentication System and Method - A system and method for RFID privacy-preserving authentication is disclosed. The method first has a reader sending a request and a first random number to a tag. The tag then generates a second random number. A plurality of hash values are then computed at the tag. Each hash value uses the first random number, the second random number and at least one part of a key of the tag as inputs. The second random number and the computed hash values are then sent to the reader. Lastly, the reader identifies a validity of the tag from the received values. The hash values are all generated in parallel and are independent to each other. | 02-25-2010 |
20100060432 | Battery Assisted Tag and RFID System - Embodiments of the present invention provide for RFID systems that employ a plurality of battery assisted semi-passive and semi-active RFID tags with optimized system operation. The RFID tags feature receivers operating with multiple dynamic range states with square law mode for improved sensitivity, and part time active transmit in the tag to supplement its backscatter transmitter and thus support system operation taking full advantage of the sensitivity of the tag. In certain embodiments of the invention, tag sensitivity and reliability are further enhanced by the use pseudo-random sequence based receiver training and frame synchronizing. | 03-11-2010 |
20100060433 | SYSTEMS AND/OR METHODS OF DATA ACQUISITION FROM A TRANSCEIVER - Systems and/or Methods are disclosed for acquiring data from a transceiver responsive to one or more signals that are received at the transceiver from one or more devices. In one embodiment, a transceiver is configured to transmit a signal responsive to having received a first signal from a first device, wherein the signal that is transmitted by the transceiver is configured to trigger a second device to transmit a second signal. The transceiver is further configured to transmit data responsive to having received the second signal that is transmitted by the second device. In other embodiments, a transceiver is configured to receive a signal from a first device over frequencies of a predetermined frequency band that the first device is authorized to use, to receive a signal from a second device over frequencies of the predetermined frequency band and to transmit data responsive to having received both the signal from the first device and the signal from the second device. The transceiver is further configured to require that both the signal from the first device and the signal from the second device be received at the transceiver before the data is transmitted. Analogous methods are also disclosed. | 03-11-2010 |
20100066504 | RADIO IC TAG READER, ITS CONTROLLER, AND RADIO IC TAG READING SYSTEM - A radio IC tag reader comprises: a first variable frequency oscillation section for generating a signal having a frequency meeting a unit radio channel used for transmission/reception to/from a radio IC tag; transmission and reception sections for executing transmission/reception to/from the radio IC tag by using the signal; a second variable frequency oscillation section for changeably generating a signal of a frequency meeting a unit radio channel for measuring the strength of a received electric wave; a carrier sense executing section for measuring strength of a received electric wave in each of the unit radio channels by using the signal; and a main control section for controlling the first variable frequency oscillation section so as to generate a carrier signal having a frequency meeting the next unit radio channel used by the transmission and reception sections based on a result of measurement by the carrier sense executing section, upon passage of a continuous transmittable time after start of transmission/reception. | 03-18-2010 |
20100066505 | INFORMATION ACCESS SYSTEM, CONTACTLESS READER AND WRITER DEVICE, AND CONTACTLESS INFORMATION STORAGE DEVICE - In a reader and writer device, a sleep period setter determines an identification in a received response, and a length of a sleep period depending on a number of received identifications, a first transmitter transmits either an information request or an information and sleep request carrying the sleep length and the received identification, and a first receiver receives a response carrying an identification. In each of information storage devices, a second receiver senses a carrier, and receives the information request or the information and sleep request in response to carrier detection, and a second transmitter, in response to the information request or the information and sleep request carrying no identification of that device, transmits a response carrying the identification of that device, and, in response to the information and sleep request carrying the identification of that device, is in an inactive state during the sleep time period. | 03-18-2010 |
20100066506 | ASYNCHRONOUS COMMUNICATION SYSTEM FOR REMOTE MONITORING OF OBJECTS OR AN ENVIRONMENT - A system provides for remote monitoring using asynchronous code division multiple access (CDMA) communication techniques between a base station and one or more transponders. Each transponder is attached or otherwise associated with an object or an environment to be monitored. Upon receipt of an interrogation signal, a transponder generates and transmits a coded transponder signal containing the monitored data. The coded transponder signal is generated using a spreading code. Each transponder is associated with a unique, mutually exclusive set of spreading codes. Each spreading code is based on a unique transponder address and the monitored data to be sent. A detector asynchronously monitors received signals for any of the available spreading codes. Once the detector detects a particular spreading code, the base station can identify the source transponder and extract the monitored data. | 03-18-2010 |
20100073140 | AUTHENTICATING METHOD AND IDENTIFICATION SYSTEM - An authenticating method includes enabling a transponder to receive a read request that contains an authentication code, enabling the transponder to extract the authentication code from the read request, enabling the transponder to generate and wirelessly transmit a reply signal that contains the authentication code, and enabling a reader to authenticate the transponder based on the authentication code contained in the reply signal. An identification system, which includes the transponder and the reader is also disclosed. | 03-25-2010 |
20100073141 | IC TAG READING DEVICE - On one side of a passageway for an identification subject | 03-25-2010 |
20100079254 | METHOD OF UPGRADING AN OPERATION PROGRAM OF A RADIO FREQUENCY IDENTIFICATION SYSTEM - A method of upgrading an operation program in an interrogator of a radio frequency identification (RFID) system including the interrogator and a transponder is provided. The method includes transmitting, from the interrogator to the transponder, a first message requesting an operation program upgrade based on information exchanged between the interrogator and the transponder; receiving, at the interrogator from the transponder, a second message that includes a new-version operation program in response to the first message; and installing, at the interrogator, the new-version operation program to upgrade the operation program in the interrogator. | 04-01-2010 |
20100085161 | DATA COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND PROGRAM - In a data reading apparatus performing contactless data communications with IC tags, a multi channel setting section sets a plurality of frequencies to be used for data communication with an IC tag in advance; a multi channel interference detecting section detects radio interference from other data reader in each of the set plurality of frequencies, prior to occurrence of a data communication request with an IC tag; a carrier sense lapse time holding section holds a period of no interference based on an interference detection result from the multi channel interference detecting section; a time comparing section determines whether the carrier sense lapse time held by the carrier sense lapse time holding section is on or above a predetermined carrier sense time upon occurrence of the data communication request with the IC tag, and permits the data communication with the IC tag when the carrier sense lapse time is on or above the carrier sense time; a transmitting section transmits data to the IC tag; and hence wait time for interference detection may be reduced. | 04-08-2010 |
20100085162 | METHOD OF SHIPPING AND TRACKING INVENTORY - A universal tracking assembly that is capable of supporting more than one protocol used in electronic article surveillance (EAS) labels. The universal tracking assembly includes an acousto-magnetic (AM) EAS portion with a Radio Frequency (RF) EAS portion. The intrinsic characteristics and properties of the components of these individual labels are utilized to enhance the overall performance and utility of the combined EAS universal tracking assembly. | 04-08-2010 |
20100097192 | BACK-DOOR DATA SYNCHRONIZATION FOR A MULTIPLE REMOTE MEASUREMENT SYSTEM - Disclosed is an apparatus and methodology for synchronizing data received at a central location that has been collected at plural remote locations and separately transmitted to the central location. A plurality of remote sensors is provided and configured to be simultaneously triggered to begin a data collection sequence and to subsequently transmit the collected data along with remote sensor identification data and timing information to the central location. Timing information may include a specifically transmitted time reference or may be derived based on successive transmissions from the individual remote sensors. | 04-22-2010 |
20100127835 | METHOD AND APPARATUS FOR SELECTIVELY FACILITATING ACCESS TO RFID DATA - Methods and apparatus for selectively facilitating access to RFID data of one more RFID tags within a faraday cage are disclosed herein. In some embodiments, (i) an external RFID interrogation signal is received (for example, by one more external antennae deployed outside of the faraday cage; (ii) a determination is made if access to RFID data of one more RFID tags within the faraday cage is permitted; and (iii) contingent on the determining that access from outside of the faraday cage is permitted, access is provided to RFID data of one or more RFID tag(s) within the faraday cage. This access providing may include the steps of: i) in response to the received external RFID interrogation signal, interrogating inside the faraday the cage one or more RFID tags; ii) receiving an RFID response from one or more of the interrogated RFID tags; and iii) transmitting to outside the faraday cage the received RFID response. | 05-27-2010 |
20100141393 | System and method for group tracking - The present invention relates generally to a system and method for group tracking wherein at least one individual within a tracked group is provided with an article of footwear equipped with a wireless tracking device. The wireless tracking device is configured for bi-directional communications with a monitoring center, wherein the wireless tracking device is adapted to determine and store absolute location information of the individual wearing the wireless tracking device and the location information of at least one other individual within the tracked group. Each individual's tracking device has a unique identifier for identifying the individual with a monitoring center at a remote location and/or portable monitoring unit. | 06-10-2010 |
20100148933 | Inclusive or Exclusive RFID Tag Interrogation and Query Round - Embodiments of the present invention allow for dynamic selection and query of different types of RFID tags into a session. Embodiments of the present invention also allow for dynamic activation of different types of RFID tags. In certain embodiments of the invention, an inclusive operation is performed on the RFID tags and in other embodiments an exclusive operation is performed. | 06-17-2010 |
20100156604 | RFID TAG READING APPARATUS AND METHOD - A method comprises identifying a known-ID-number set comprising at least two ID numbers of corresponding tags and each ID number comprises a plurality of bit positions; calculating an entropy between each corresponding bit position in the known-ID-number set; identifying the bit position having a greatest entropy; and transmitting a reading query to the tags in a communication range. The reading query includes a differential specific number corresponding to the bit position having the greatest entropy. | 06-24-2010 |
20100156605 | WIRELESS DISPLAY TAG (WDT) USING ACTIVE AND BACKSCATTER TRANSCEIVERS - A wireless display tag, adapted to fit within the C-channel of a shelf-edge, or otherwise usable as a hang tag or small identification device, includes, depending on implementation, an active transceiver, a passive transceiver, or both, with analog and digital control portions for managing communications with a host. | 06-24-2010 |
20100176927 | Device and Method for Analysing Radio-Frequency Systems - The invention relates to a device for analysing radio-frequency systems. Such a device comprises means for detecting radio-frequency electromagnetic signals, and means for determining at least one analog property of the radio-frequency signal received form the reader. According to the invention, the device further comprises means for producing an electromagnetic excitation signal in order to excite the radio-frequency tag, and means for determining at least one analog property of the return signal received from the radio-frequency tag. The device permits the effective analysis of RFID systems, for example, in system-installation and error-searching situations. | 07-15-2010 |
20100176928 | APPARATUS FOR COMMUNICATING WITH RFID TAG - This disclosure discloses an apparatus configured to conduct radio communication with at least one RFID tag having a reversible flag capable of being reversed at response; communication area switching portion capable of sequentially switching and generating a plurality of modes of communication areas from the antenna device; flag unification command transmitting portion configured to transmit a flag unification command for unifying the reversible flag of the RFID tag present within the communication area to a state before reverse to the RFID tag present in each mode of the communication area sequentially generated by the communication area switching portion through the antenna device; and reading command transmitting portion configured to transmit a reading command for obtaining information stored in the RFID tag to the RFID tag after the flag unification command is transmitted to the RFID tag in the plurality of modes of communication area. | 07-15-2010 |
20100194543 | ACCURATE PERSISTENT NODES - A timing circuit that can function as an accurate persistent node in an RFID tag includes a power capture circuit for capturing power from a power source, and a counter circuit that provides a count representing a progression of time. The count can then be compared to a reference value representing a time constant of the circuit. | 08-05-2010 |
20100201495 | RESONANT-CIRCUIT STRUCTURE - The invention is a resonant-circuit structure for enhancing the interrogation range of a radio-frequency identification system. The resonant circuit structure consists of a coil assembly and a capacitor connected in parallel with a resonance frequency equal to the frequency of the interrogating signal of the radio-frequency identification system with which the resonant circuit structure is to operate. The coil assembly and the capacitor are embedded in a structure which provides physical support for the coil assembly and the capacitor and access to a region near the coil assembly. | 08-12-2010 |
20100207738 | STEERABLE PHASE ARRAY ANTENNA RFID TAG LOCATER AND TRACKING SYSTEM AND METHODS - A system for and method of tracking and locating RFID tags, including where at least one steerable phase array antenna may locate the tags associated with items in three dimensions in real time, through the use of a beam steering unit and controller therewith to control the direction of a beam launched by the at least one steerable phase array antenna. | 08-19-2010 |
20100214074 | LPRF DEVICE WAKE UP USING WIRELESS TAG - A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast. | 08-26-2010 |
20100245050 | RFID SYSTEM AND RADIO APPARATUS - A radio apparatus capable of being used in an RFID system, the apparatus having a memory that stores identification information of the radio apparatus, a timing generation section that measures time, a receiving section that receives an information-request signal requesting transmission of the identification information of the radio apparatus, and that receives an unmodulated-carrier-wave request signal requesting transmission of an unmodulated carrier wave to be used for positioning the radio apparatus; and a transmission section that transmits a response signal carrying the identification information in the memory in response to receiving of the information-request signal, and that transmits the unmodulated carrier wave in an unmodulated-carrier transmission period determined by time period data stored in the memory in accordance with timing from the timing generation section in response to receiving of the unmodulated-carrier-wave request signal. | 09-30-2010 |
20100245051 | Communication Method for Noncontact RF ID System, Noncontact RF ID System, and Transmitter and Receiver - A communication method for a noncontact RF ID system that uses a first waveform, a second waveform, and a third waveform, wherein the first waveform and the second waveform are formed by a basic waveform having one of a rising or falling state transition at the approximate center of the waveform, the third waveform is formed by a plurality of basic waveforms that have one state transition at the approximate center part of the waveform, and the third waveform generates one state transition only at the approximate center of the plurality of basic waveforms. In addition, communication is carried out by using the third waveform in place of the first waveform and the second waveform in the case in which communication is carried out using a first waveform and a second waveform and one state transition is generated outside the approximate center part of the basic waveform. | 09-30-2010 |
20100253481 | Method and system for miniature passive RFID tags and readers - This invention makes possible small size, long range, reliable, low-power, low-cost RFIDs fulfilling the needs of the industry and the roadmap set for RFID, as by Walmart and the DoD. Tag energization and data communication take place by independent means. The invention employs low-power communication means, such as ultra wideband (UWB), for transfer of data between Tag and Reader, and relatively high power narrowband means to remotely energize the Tag. Said means of powering and communication mechanisms, further, are independent of the underlying process, or technology, of implementation of the Microchip on the Tag, as well as from the transceiver technology aboard the Reader. As such, they provide an ideal method and system by which to power and communicate with RFIDs, through cycles of evolution and changes in physical implementation technology. | 10-07-2010 |
20100259367 | RFID READ/WRITE STATION AND A METHOD FOR OPERATING SUCH - An RFID read/write station includes read/write equipment with a transmitter, a receiver, a processor unit, and at least one read/write antenna. A first passive electronic tag is coupled via a first coupling element to an output from the transmitter and an input to the receiver with a pre-set coefficient of coupling, while a second passive electronic tag is coupled to a read/write antenna through a second coupling element with a pre-set coefficient of coupling. For the purpose of periodically or aperiodically monitoring the RFID read/write station, an identification of the first and second tags can be made and/or the data content of which can be read. | 10-14-2010 |
20100265043 | AMPLITUDE MODULATOR - A method for amplitude modulating a carrier signal according to one embodiment includes splitting the carrier signal into first and second paths; phase modulating the carrier signal on the first path; phase modulating the carrier signal on the second path; combining the phase modulated carrier signal on the first path with the phase modulated carrier signal on the second path for generating an amplitude modulated output signal; and wherein a first feedback loop couples the amplitude modulated output signal to circuitry for phase modulating the carrier signal on the second path but not to circuitry for phase modulating the carrier signal on the first path, the first feedback loop being for reducing a residual phase variation of the amplitude modulated output signal. Additional systems and methods are also presented. | 10-21-2010 |
20100271186 | LOCATION DETERMINATION SYSTEM - A reader device of a location determination system gradually changes a transmission power step by step and repeatedly sends an interrogation signal which contains therein information on a power level indicating the transmission power. A tag of the location determination system receives the interrogation signal, sends a response signal into which the information on the power level contained in the interrogation signal is incorporated. The reader device receives the response signal and sends, to a management device, the information on the power level contained in the response signal and identification information for identifying the subject reader device. The management device detects the position of the tag based on the information on the power level and the identification information thus received. | 10-28-2010 |
20100277283 | Systems and methods for RFID tag operation - A RFID tag system may be configured as a tag having a first band (e.g., multiple channel-based NBFM frequency band) transceiver to allow field programmability of tag behavior and onboard tag data. The RFID tag system may be configured to collect data from one or more local sensors through the first band link and store data points of interest in tag onboard storage. The RFID tag system may be configured to work in conjunction with a remote interrogating unit, and a handheld device or other local interrogating unit may be additionally or alternatively provided to communicate with such aRFID tag. Data that is stored on the RFID tag may be retrieved or changed, and/or the operation of the tag may be modified. | 11-04-2010 |
20100277284 | Data separation in high density environments - Systems and methods for data separation, which may be employed to receive and process RFID tag data in RF signal environments where multiple RFID tags are tracked, localized and/or employed to transmit information. The disclosed systems and methods may be implemented for data separation in a high density aRFID environment using RFID tags in combination with spatial and/or frequency separation. | 11-04-2010 |
20100289623 | INTERROGATING RADIO FREQUENCY IDENTIFICATION (RFID) TAGS - The present disclosure is directed to a system and method for interrogating RFID tags. In some implementations, a method includes transmitting an RF command signal to RFID tags in an inhibited zone during a first time period. The RF command signal substantially prevents the RFID tags in the inhibited zone from responding to RF interrogation. RFID tags in a target zone are interrogated during a second time period different from the first time period. The target zone located differently from the inhibited zone. | 11-18-2010 |
20100289624 | APPARATUS FOR COMMUNICATING WITH RFID TAG - The disclosure discloses an apparatus for communicating with an RFID tag of a movable type, comprising: an apparatus antenna configured to conduct information transmission and reception with respect to an RFID tag circuit element; a transmission processing portion configured to generate an inquiry signal for obtaining the information stored and transmits the signal via the apparatus antenna; a reception processing portion configured to be able to receive a response signal replied from the RFID tag circuit element via the apparatus antenna; a notifying device configured to make notification according to a reception result; and a notification control portion configured to control the notifying device so that the notification by the notifying device is in a mode corresponding at least to movement of the apparatus before the notification of the notifying device is started after the reception processing by the reception processing portion is performed. | 11-18-2010 |
20100302011 | TRACKING OF AND COMMUNICATION WITH MOBILE TERMINALS USING A BATTERY-POWERED WIRELESS NETWORK INFRASTRUCTURE - There is provided a method of reducing energy consumption of tag readers in a wireless network, the method comprising: (a) turning a transmitter and a receiver of the tag reader to a power-off state; b) powering-on the transmitter of the tag reader for a limited transmission time frame; c) during the transmission time frame, transmitting a beacon message comprising an identifier of the tag reader, channel characteristics of the tag reader and a powering-on schedule of the receiver of the tag reader, for allowing tags in the network to communicate with the tag reader, where the tags are almost continuously in a power-on state; d) powering-on the receiver of the tag reader during a limited reception time frame in accordance with the schedule, for enabling the receiver to receive messages transmitted by the tags in the network if required; e) repeating steps a) to d) periodically. There is further provided a battery-powered tag reader which reduces energy consumption. There is further provided a battery-powered wireless network with an energy management for tag reader. There is further provided a method of increasing probability of detection of rapidly moving clusters of mobile nodes in a wireless network. | 12-02-2010 |
20100308973 | THERMALLY CONTROLLED DUTY CYCLE REGULATION IN AN RFID MODULE - A system and methods for measuring the temperature of an RFID reader module and inserting a delay in the RFID reader's duty cycle to prevent the RFID reader from initiating a thermal shutdown. The system and methods are self-adaptable, therefore incurring the benefit regardless of the design of the RFID reader host and its associated heat sink. The system and methods also provide for archiving the collected data and analyzing the data providing the ability to improve the design of the RFID reader host. | 12-09-2010 |
20100328043 | INTERROGATION OF RFID COMMUNICATION UNITS - A dual mode interrogation is carried out by sending narrow band radio frequency interrogation (RFID) signal for narrow band RFID communication units, the narrow band signal comprising substantially continuous periods, and by sending a high data rate RFID interrogation signal during the substantially continuous periods of the narrow band RFID signal so that two different types of RFID communication units are interrogated substantially simultaneously. | 12-30-2010 |
20110006885 | RFID INTERROGATOR RETRANSMITTING COMMAND DEPENDING ON COLLISION SITUATION AND CONTROL METHOD THEREOF - As an RFID interrogator transmitting a command depending on a collision situation and a control method thereof, the RFID interrogator includes a collision diagnosis unit that analyzes data of a received signal received during a receive time in correspondence with a transmitted signal from an RF communication unit that can transmit and receive signal to and from one or more tag, verifies whether or not a collision occurs in the received signal, and diagnoses a collision type depending on an analysis result of the data of the received signal; and a collision resolution unit that can retransmit a command to the tag through the RF communication unit depending on the collision situation on the basis of whether or not occurrence of the collision or not and the collision type that are received from the collision diagnosis unit. | 01-13-2011 |
20110012713 | RFID TAG SENSORS AND METHODS - Radio frequency identification (RFID) devices for use in RFID-based sensors and related methods are described herein. In one implementation, an RFID sensor system includes an RFID device having a near field only RFID tag and a conductive element which functions as a far field antenna. A coupling structure selectively locates the near field only RFID tag and the conductive element in at least a first position and a second position relative to each other; wherein in the first position, the RFID device only operates in a near field, and in the second position, the RFID device operates in both the near field and a far field. The system may also include an RFID reader and controller located within the far field to read the RFID device only when the coupling structure locates the components in the second position. | 01-20-2011 |
20110025471 | RFID transponder, in particular for assembly on metal and manufacturing method therefor - The invention relates to an RFID transponder comprising: an antenna, a chip comprising at least one transmission and reception circuit as well as a memory, a dielectric carrier element which is covered on a first surface at least sectionally with a structured first metallization and which is covered on a second surface disposed opposite the first surface at least sectionally with a second metallization, wherein the first and second metallizations are mutually electrically conductively connected, thereby forming the antenna, wherein the first metallization is structured such that it forms two electric terminals of the antenna arranged on the first surface of the dielectric carrier element, and wherein the chip can be or is electrically contacted via these two terminals and is positionable or arranged on the first surface and/or is positionable or arranged at least sectionally integrated into this surface, and an adaptation network at least partly formed by the structuring of the first metallization and adapting the input impedance of the antenna in a conjugate complex manner to the impedance of the chip. | 02-03-2011 |
20110037570 | Communication Method for a Radio System and Apparatus and System for Implementing the Method - An apparatus, system and communication method, which is particularly suited for a radio frequency identification system (RFID), wherein a reflection-transmission apparatus is disposed in a radio system and, during a communication process, the reflection and transmission features of reflection-transmission apparatus presented at the radio frequency are changed to introduce a multi-path signal component which changes with time. Consequently, during the communication process, a receiving apparatus receives and combines the multi-path signal component of communication signals and the radio system performs communication by utilizing time diversity effects. The apparatus, system and method provide effective and continued reduction of communication blind spots in the RFID system, thereby improving the overall success rate for the RFID system to read tags and accomplishing a better balance with the overall reading time. | 02-17-2011 |
20110063087 | RESISTIVE AND CAPACITIVE MODULATION IN AN ELECTROMAGNETIC TRANSPONDER - The selection of at least one back-modulation element of an electromagnetic transponder from among a plurality of resistive and/or capacitive modulation elements of the load of an oscillating circuit of the transponder, including selecting the modulation element(s) according to a binary message received from a read/write terminal. | 03-17-2011 |
20110068906 | SYSTEMS, METHODS, AND APPARATUSES FOR MANAGING CONFIGURABLE MONITORING DEVICES - Provided are embodiments of configurable monitoring devices, methods, systems, computer readable storage media and other means for locating devices. In some examples, the devices are attached to a retail or other type of article. The devices can be dynamically configurable and communicate wirelessly with other network entities. | 03-24-2011 |
20110080266 | Power Controller for an Electronic Reader Device - A system and method for controlling the power of an electronic reader device is provided. The system for controlling the power of an electronic reader device may comprise a computing apparatus that may receive a command from a host system to change the power state a power controller. The system may also comprise a computing apparatus that may adjust the power state of the power controller by using one or more registers. The system may further comprise a computing apparatus that may adjust the power of one or more power supplies. The system may additionally comprise a computing apparatus that may instruct a display controller to perform an operation based on the change of the power state of the power controller. | 04-07-2011 |
20110084812 | RFID INTERROGATOR DEVICE - An RFID interrogator device has a transmission section for transmitting a command to an RFID tag and a reception section for receiving an RF signal from the RFID tag and is configured to perform backscatter radio communication with the RFID tag. The RFID interrogator device comprises a time window setting section configured to set a time window at timing of receiving preamble data added to a head of response data transmitted from the RFID tag in response to the command, and an identifying data storage section storing preamble identifying data. The RFID interrogator device compares the data received within the time window, with preamble identifying data stored in the identifying data storage section, thereby determining whether the data received is identical to the preamble data transmitted from the RFID tag. | 04-14-2011 |
20110090060 | Isolating RFID Reader - Systems and methods for using a multimodal handheld reader are described. The reader can be used to read non electronic labels, passive RFID tags using backscatter modulation techniques and battery based active RFID tags using a single handheld. The reader deploys a multiplexed antenna design and thereby contains a method to read a group of passive RFID tags and at the same time the reader can isolate a single passive RFID tag from amongst a group of passive RFID tags within close proximity. All such passive RFID tags use backscatter modulation techniques and are in the readers own RF zone. | 04-21-2011 |
20110090061 | Methods for Noise Validated Phase Ranging RFID Location - A method and apparatus for validating a distance output of a phase ranging RFID location system, based upon the phase readings included in data sets obtained from monitoring reply signals corresponding to interrogation signals at multiple frequencies and a common interrogation signal beam direction; by comparison of measured phase and frequency data sets with theoretical phases calculated with respect to the same frequencies over a range of positions corresponding to a beam extent of the interrogation signal. The distance output validated by comparison with theoretical threshold data processed to generate an extreme values distribution from which a cumulative distribution function is extracted and against which a confidence level is applied. | 04-21-2011 |
20110095870 | METHOD FOR MEASURING PRESSURE IN A TIRE - A method for sensing pressure in a pressurized article utilizing an electronic tag includes: calculating the impedance of a tag antenna, the tag antenna being flexible and at least partially composed of a flexible conductive pressure sensitive material including rubber; measuring changes in antenna impedance resulting from changes in pressure exerted on the tag antenna; calculating changes in tag transmission signal strength resulting from changes in antenna impedance; at least partially embedding the electronic tag within a wall portion of the article, the wall portion at least partially defining an article cavity and exerting a compressive force on the tag antenna of a magnitude determined by the magnitude of air pressure within the cavity; measuring the tag transmission signal strength with the tag antenna subjected to pressure from the article wall portion; determining the magnitude of air pressure within the cavity required to effect a compressive force on the tag antenna by the article wall sufficient to result in the measured tag transmission signal strength. | 04-28-2011 |
20110128128 | METHOD AND APPARATUS FOR IMPROVING RFID TAG READING - An apparatus and method for improving RFID tag reading. The apparatus includes a substrate element having a predetermined active area, and a plurality of resonant elements each having a resonant frequency, a quality factor, and a response band. The resonant elements are distributed within the predetermined active area of the substrate element for scattering interrogation electromagnetic waves radiated thereupon from the RFID reader. At least one resonant element has a null-direction thereof orientated in a direction that is substantially orthogonal to a line extending from a center of the resonant element to a center of an antenna of the RFID reader. | 06-02-2011 |
20110133902 | ELECTRONIC LABEL AUTHENTICATING METHOD AND SYSTEM - An electronic label authenticating method is provided, the method includes: the electronic label receives an accessing authenticating request group sent by a reader-writer, the group carries a first parameter selected by the reader-writer; the electronic label sends a response group of the accessing authenticating to the reader-writer, the response group of the accessing authenticating includes the first parameter and a second parameter selected by the electronic label; the electronic label receives an acknowledgement group of the accessing authenticating feed back by the reader-writer; the electronic label validates the acknowledgement group of the accessing authenticating. An electronic label authenticating system is also provided, the system includes a reader-writer and an electronic label. | 06-09-2011 |
20110140861 | Two Directional Information Flow in Real Time Location Sensing RFID Networks - An RFID system with a plurality of tags and base stations where transmission of information to a specific tag is carried out by one of the base stations, where said one of the base stations is selected based on received signal power of the tag relative to the plurality of the base stations. | 06-16-2011 |
20110148592 | ANTENNA ASSEMBLY FOR A TAG READER - An antenna assembly includes a stand having a convex outer surface positioned to intercept and engage a vehicle tire as the vehicle tire passes over the convex stand surface. The height and contour of the convex stand surface slows the rotational rate of the vehicle tire, and thereby a transmitting device carried by the tire, to a preferred rotational read rate as the vehicle tire passes over the convex surface. One or more antenna members mount to the stand proximal to the convex surface, each antenna having a directionally aimed tilted antenna field positioned to continuously receive data transmission from the electronic transmitting device as the vehicle tire passes over the convex stand surface at the reduced rotational read rate. | 06-23-2011 |
20110148593 | METHOD FOR READING A VEHICLE TAG WITHIN A READ STATION - A method of reading a data transmission from an electronic transmitting device mounted to a vehicle tire assembly includes: positioning a convex upper surface of a stand to intercept a vehicle tire of the vehicle tire assembly; establishing rotational engagement between the vehicle tire and the convex upper surface of the stand to slow the speed of the vehicle and reduce the rotational rate at which the vehicle tire rotates to a targeted reduced rotational read rate; and directing an antenna field from at least one antenna toward an approach path (and at least one antenna toward the exiting path) of the vehicle tire to the convex upper surface and lower surface of the stand to receive data transmission from the electronic transmitting device as the vehicle tire passes over the stand upper surface then down the lower surface at the reduced rotational read rate. | 06-23-2011 |
20110148594 | RFID SYSTEM - An RFID system controls a device using a serial interface protocol through the use of a wireless communication scheme thereof. The RFID system includes: a digital unit configured to control the command signal generated according to a radio signal, and generate an address, data, and a control signal; a memory unit configured to perform a data read or write operation according to the control signal applied from the digital unit; a coupling unit coupled to an external driving device; a decoder configured to decode an output data of the memory unit; and a driving controller configured to sequentially output decoded data of the decoder to the coupling unit in synchronization with a serial clock. | 06-23-2011 |
20110163855 | CONTACTLESS IC CARD READER AND DATA READING METHOD - A contactless IC card reader and a data reading method which are capable of improving data reading accuracy while preventing a decrease in processing speed. Specifically, in a contactless IC card reader which transmits signals composed of amplitude modulated carrier signals to a contactless IC card, the contactless IC card and reader communicate by means of an NRZ encoding method and an ASK modulating method for which the modulation depth has an arbitrary value. The contactless IC card reader is provided with a contactless control means which modulates/demodulates signals transmitted to/received from the contactless IC card, and a main control means which is electrically connected to the contactless control means and that controls the entire card reader. The modulation depth that is varied by the contactless control means based on the command sent from the main control means has multiple range widths with an arbitral value as the standard. | 07-07-2011 |
20110187509 | SOFTWARE-DEFINED MULTI-MODE RFID READ DEVICES - Devices and methods for reading multiple types of RFID tags having different frequencies and/or encoding schemes are disclosed. One or more search signals covering a plurality of RFID bands are transmitted. A presence indication of an RFID tag in one of the plurality of RFID bands is detected. An interrogating signal having a carrier frequency tuned to a frequency at which the presence indication is detected is transmitted. A tag response signal comprising tag information associated with the RFID tag is received. A digital response signal based on the tag response signal is digital signal processed to obtain the tag information. | 08-04-2011 |
20110193686 | TAG READER, TAG READER CONTROL METHOD, AND TAG READER CONTROL PROGRAM - There has been a problem that it is impossible to ensure the ability to acquire RFID tag state information and at the same time reduce the power consumption necessary therefore. Provided is a tag reader including a read means, which detects the loss of communication with a tag during communication with the tag, and a control means, which counts the number of times communication with the tag is lost on the basis of the losses detected by the read means and disables execution of a communication process with the tag when the number of losses has reached a predetermined threshold value. | 08-11-2011 |
20110221575 | RFID CIRCUITRY AND METHODS OF USING THE SAME TO PROVIDE INFORMATION OF EVENTS PERTAINING TO AN ELECTRONIC DEVICE - An electronic device with RFID circuitry is provided. The electronic device is operative to instruct the RFID circuitry to provide a desired message indicative of an event associated with the electronic device. For example, if the electronic device experienced some type of system failure, the device may instruct the RFID circuitry to provide a message indicative of that failure. | 09-15-2011 |
20110241843 | BATTERY-LESS OPERATED BI-STABLE DISPLAY BY WIRELESS POWER TRANSMISSION - Updating content of e-paper ESL device(s) otherwise in a powered-down state is disclosed. One or more e-paper ESL devices need only be turned on when it is desired or needed to change and update content displayed. Transmission of a wireless energy burst having a magnetic resonating power coupling characteristic powers up the e-paper ESL device from a powered-down to powered-up state. The content of the e-paper ESL device can then be changed in accordance with data and instructions transmitted with the wireless energy burst. | 10-06-2011 |
20110241844 | APPLIANCE INCLUDING A RADIO FREQUENCY IDENTIFICATION (RFID) DEVICE AND METHOD FOR TWO-WAY COMMUNICATION OF DYNAMIC DATA BY THE APPLIANCE VIA THE RFID DEVICE - An appliance including a two-way radio frequency identification (RFID) device for dynamic communications, with for example, an RFID reader used by a technician. The RFID device may include an electronic controller structured to control operating functions of the appliance. The RFID device may further include a storage medium structured to store information about the appliance and computer-executable instructions operable to control the operating functions of the appliance. A transmitter may be incorporated allowing the appliance to send and receive dynamic data between the appliance and one or more remote RFID devices using two-way communication protocols at all levels. | 10-06-2011 |
20110273278 | System and Method for Transmitting Information - A system and method for transmitting information within a space, including sensory modules that each include a data signal receiver and an output element; a first signal emitter that emits a data signal of a first broadcast breadth that directs a signal with a first information set on the operation of the output element to a first portion of the space to a first sensory module within the first portion and a signal with a second information set on the operation of the output element to a second portion of the space to a second sensory module within the second portion; and a second signal emitter that emits a data signal of a second broadcast breadth larger than the first broadcast breadth with a third information set with information on the implementation of the first and second information sets to both the first and second portions of the space. | 11-10-2011 |
20110279239 | MULTI-PROTOCOL RFID SYSTEM USING BIT-LOCK OR STEP-LOCK SYNCHRONIZATION - A multi-protocol RFID interrogating system employs a synchronization technique (step-lock) for a backscatter RFID system that allows simultaneous operation of closely spaced interrogators. The multi-protocol RFID interrogating system can communicate with backscatter transponders having different output protocols and with active transponders including: Title 21 compliant RFID backscatter transponders; IT2000 RFID backscatter transponders that provide an extended mode capability beyond Title 21; EGO™ RFID backscatter transponders, SEGO™ RFID backscatter transponders; ATA, ISO, ANSI AAR compliant RFID backscatter transponders; and IAG compliant active technology transponders. The system implements a step-lock operation, whereby adjacent interrogators are synchronized to ensure that all downlinks operate within the same time frame and all uplinks operate within the same time frame, to eliminate downlink on uplink interference. | 11-17-2011 |
20110279240 | MULTI-PROTOCOL RFID SYSTEM USING DYNAMIC RECONFIGURATION - A multi-protocol RFID interrogating system employs a synchronization technique (step-lock) for a backscatter RFID system that allows simultaneous operation of closely spaced interrogators. The multi-protocol RFID interrogating system can communicate with backscatter transponders having different output protocols and with active transponders including: Title 21 compliant RFID backscatter transponders; IT2000 RFID backscatter transponders that provide an extended mode capability beyond Title 21; EGOTM RFID backscatter transponders, SEGOTM RFID backscatter transponders; ATA, ISO, ANSI AAR compliant RFID backscatter transponders; and IAG compliant active technology transponders. The system implements a step-lock operation, whereby adjacent interrogators are synchronized to ensure that all downlinks operate within the same time frame and all uplinks operate within the same time frame, to eliminate downlink on uplink interference. | 11-17-2011 |
20110298590 | APPARATUS COMPRISING DISPLAY DRIVING INTEGRATED CIRCUIT AND RADIO-FREQUENCY IDENTIFICATION READER - A display driving integrated circuit operates as both a radio-frequency identification (RFID) reader and a display driver. The display driving integrated circuit operates as the RFID reader by supplying power to an RFID tag, verifying the RFID tag according to communication between the RFID tag and the processor to produce verification data, transferring the verification data from the processor to the RFID tag, and transmitting some of the verification data to the display unit. It operates as a display driver by processing data received from the processor and transferring the processed data to the display unit. The display driving integrated circuit implements functions for the RFID reader and the display unit driver using one or more shared elements selected from a timer, a clock signal generator, a cyclic redundancy check calculator, and a data interface. | 12-08-2011 |
20110304439 | DEVICES EMPLOYING FAST CARRIER CANCELLATION AND METHODS THEREOF - In one embodiment, a RFID reader circuit includes a RF power amplifier coupled to a coupler; an amplitude and phase adjustor module coupled to an output of the coupler; a signal combiner module coupled to an output of the amplitude and phase adjustor module; and a low noise amplifier coupled to an output of the signal combiner module. In another embodiment, a RFID system includes a plurality of RFID tags; and at least one RFID reader, the at least one RFID reader comprising a RFID reader circuit, the circuit comprising: a RF power amplifier coupled to a coupler; an amplitude and phase adjustor module coupled to an output of the coupler; a signal combiner module coupled to an output of the amplitude and phase adjustor module; and a low noise amplifier coupled to an output of the signal combiner module. Other systems, methods, and circuits are described as well. | 12-15-2011 |
20110304440 | RFID DEVICES USING A COMMON MASTER CLOCK AND METHODS THEREOF - In one embodiment, a RFID reader circuit includes a master clock for providing a timing signal on a timing signal output thereof, a switching regulator synchronized with the timing signal for providing power to the RFID reader circuit, a Radio Frequency (RF) source in a transmitting path, the RF source being coupled to the timing signal output, and an analog-to-digital converter (ADC) in a receiving path, the ADC being coupled to the timing signal output. This circuit may also be included in an RFID system having a reader and a plurality of RFID tags, in one approach. According to another general embodiment, a method for mitigating noise in a RFID reader circuit includes providing a common timing signal or derivatives thereof from a master clock to each component in a RFID reader circuit and to a power supply. Other systems and methods are also shown, according to various embodiments. | 12-15-2011 |
20120038464 | POWER SAVING METHOD - The invention relates to a method for saving power especially for tag talks first data transmission in radio frequency identification (RFID) systems including a tag containing a non-volatile memory, a digital block and an analogue block and a static random access, wherein the data of the non-volatile memory are prefetched from the non-volatile memory into the digital block and the tag talks first data will be stored in the static random access memory embedded in the digital block. | 02-16-2012 |
20120086557 | WIRELESS TERMINAL AND INFORMATION STORAGE METHOD - A wireless terminal is provided that can ensure security while gathering a communication history using little memory. The wireless terminal ( | 04-12-2012 |
20120161940 | METHOD AND SYSTEM FOR ONTOLOGY-DRIVEN QUERYING AND PROGRAMMING OF SENSORS - Described embodiments relate to a method of ontology-driven querying or programming of at least one sensor. The method comprises generating at a query origin a query or command for execution in relation to the at least one sensor, transmitting the query or command to an ontology transformer over a first network, classifying the query or command according to a domain ontology and one or more predetermined capabilities of the at least one sensor, generating a transformed query or program based on the classified query or command using one or more code fragments stored in a memory accessible to the ontology transformer, transmitting the transformed query or program to at least one sensor node in communication with the at least one sensor for execution of the transformed query or program by the at least one sensor node in relation to the at least one sensor, receiving at the ontology transformer from the at least one sensor node at least one result of the query or program, and returning the at least one result. | 06-28-2012 |
20120206241 | GATEWAY RADIO FREQUENCY IDENTIFICATION TAG SYSTEM - A system and method are disclosed for transporting deterministic traffic in a gigabit passive optical network. A system that incorporates teachings of the present disclosure may include, for example, an Optical Line Termination (OLT) for exchanging data traffic in a Gigabit Passive Optical Network (GPON) having a controller programmed to generate a timeslot schedule for transport of a desired bandwidth of constant bit rate (CBR) data traffic by selecting one or more timeslots from periodic frame clusters operating according to a GPON Transmission Convergence (GTC) protocol. Additional embodiments are disclosed. | 08-16-2012 |
20120242459 | INTERROGATING AN AUTHENTICATION DEVICE - Methods, systems, and computer programs for interrogating an authentication device are disclosed. For example, a mobile device can include an interrogator module that interrogates an authentication module in a mobile device accessory, for example, upon installation of the mobile device accessory. In some implementations, challenge-response pairs and a challenge-response distribution are stored in a memory of an interrogator module. The challenge-response distribution defines selection probabilities for the challenge values. In some instances, the interrogator module receives an authentication request from an authentication module, and in response to the authentication request, the interrogator module selects an initial challenge value according to the challenge-response distribution. The interrogator module sends the authentication module an interrogation message that includes the initial challenge value. The interrogator module can modify the challenge-response distribution, for example, based on suspicious behavior. | 09-27-2012 |
20120293308 | Method and System for Networking Radio Tags in a Radio Frequency Identification System - A radio frequency tag for a radio frequency identification system is provided that includes an antenna and a receiver coupled to the antenna. The receiver receives and demodulates a message received on at least one frequency. A retransmit controller receives the message, determines a retransmit status for the message, and if the retransmit status is positive, initiates retransmission of the message for reception by another radio tag. | 11-22-2012 |
20120306625 | ENHANCED IDENTIFICATION SYSTEM - A method and an identification system used for communicating between a reader and a plurality of transponders are disclosed. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognises a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders. | 12-06-2012 |
20120319824 | SELECTIVE RF DEVICE ACTIVATION - Systems and methods for activating one or more devices are disclosed. According to one embodiment, the device listens for an activate code, the activate code having a length field and a mask field, the mask field including a mask value, the length field specifying a length of the mask field to a final bit of the mask value. Upon receiving the activate code, the length field is compared to a stored length value for determining whether the length field meets a predefined criterion. If the length field meets the predefined criterion, an address of the activate value is loaded (if an address field is present) and the appropriate bits (mask value) of the mask field are compared to a stored activate value. An activate signal is generated if the mask value matches the stored activate value. The activate signal can be used to activate additional circuitry including the entire device. | 12-20-2012 |
20120326846 | ELECTRONIC TAG TIME-SHARING CONTROL SYSTEM AND METHOD THEREOF - The present invention discloses an electronic tag time sharing control system and a method thereof, and the system comprises a server, at least one coordinator and a plurality of wireless electronic tags. The server transmits a time-sharing control signal. The coordinator and the server form a wireless connection for receiving and transmitting the time-sharing control signal. The wireless electronic tags and the coordinators form a wireless connection. After each wireless electronic tag receives the time-sharing control signal, different sleep cycle and wakeup timing are generated to update display information sequentially. A portion of the wireless electronic tag is situated at a sleep status and a portion of the wireless electronic tag is situated at a standby status to receive the update display information, so as to achieve the effects of saving bandwidth, reducing packet collisions and extending the service life of the wireless electronic tag. | 12-27-2012 |
20130015958 | TRUNCATION, COMPRESSION, AND ENCRYPTION OF RFID TAG COMMUNICATIONS - An RFID tag is capable of storing data, receiving a signal from a reader, determining a response taking into account the tag mode and the data, and transmitting a response to the reader. The data includes a first plurality of bits and a second plurality of bits. The tag mode may be set by a current or a prior command by the reader. Depending on the tag mode, the response may be complete, or the second plurality of bits may be truncated, compressed, or encrypted. In an aspect of the invention, the response includes an implicit indication of whether the response is complete, truncated, encrypted, or compressed. In another aspect of the invention, a command from the reader indicates how many bits should be truncated, compressed, or encrypted. | 01-17-2013 |
20130076491 | SYSTEM AND METHOD FOR COMMISSIONING DEVICES - According to an aspect of the invention a system for commissioning devices is provided, which system comprises: a first device and a second device; an RFID tag comprised in the first device; a host processor comprised in the first device; wherein the second device is arranged to generate an electromagnetic field; wherein the RFID tag is arranged to detect the electromagnetic field and to wake up the host processor upon detecting said electromagnetic field in order for the second device to communicate with the host processor. Furthermore, a corresponding method for commissioning devices is provided. Since the RFID tag comprised in the first device is arranged to wake up the host processor, an end-user does not have to switch on the first device manually. Therefore, the user interaction is simplified. Furthermore, there is no need for a separate power button on the first device. The latter reduces cost and simplifies the design of the first device. | 03-28-2013 |
20130229265 | SYSTEM AND METHOD FOR INTERACTIVE USER-DIRECTED INTERFACING BETWEEN HANDHELD DEVICES AND RFID MEDIA - Systems and methods for interactively interfacing handheld devices and RFID media are described. A method for interactively interfacing HHDs and RFID media. The method includes starting an application on a HHD for interfacing with RFID media, the HHD including a RFID reader, receiving user input relating to the storing of commands or messages of RFID media, creating one or more commands or messages based on the received user input, and storing the one or more commands or messages on a RFID media using the RFID reader. | 09-05-2013 |
20130265140 | LOW POWER RADIO FREQUENCY COMMUNICATION - A method, system and tag for low power radio frequency communication are described. In one embodiment, the RF tag comprises: a radio, an energy harvesting unit operable to convert incident RF energy to direct current (DC), a storage unit to store recovered DC power, one or more sensors for sensing and logging data, and a microcontroller coupled to the energy harvesting and storage units, the one or more sensors and the radio, the microcontroller operable to wake up from a sleep state and cause the radio to communicate, sensed data from at least one of the one or more sensors while powered by energy previously harvested and stored by the energy harvesting and storage unit. | 10-10-2013 |
20130271267 | APPARATUS FOR ENCODING RFID TAG - An apparatus for encoding RFID tag is disclosed, the apparatus including an RFID reader managing an encoding section for encoding tag information on a tag in a case a trigger signal is received from a PLC and an inspection section for inspecting the encoded tag information, whereby productivity can be enhanced and a high speed encoding can be realized. | 10-17-2013 |
20130278392 | METHOD AND SYSTEM FOR DETERMINING ASSET DISPOSITION USING RFID - A system and method of determining a disposition of an electronic device as installed, in-need-of-repair, or in-storage are provided, using Radio Frequency Identification (RFID) devices on the electronic devices and a sensor which detects disposition. Diagnostic test results and locations of installed devices may also be communicated to the RFID associated with the device and provided in a response to an interrogation. Shared memory on the device is integrated with the RFID device to store utilization and health history on the device for later retrieval. The disposition data is provided in a response to an interrogation of each device. Optionally, a communications device on a chassis housing electronic devices provides the disposition and location of all installed devices in response to an interrogation. The device disposition and location information is communicated to the communications device upon installation via a processing unit integral to the chassis. | 10-24-2013 |
20140015648 | ANTENNA DESIGN AND INTERROGATOR SYSTEM - The present invention relates to the identification of RFID devices that are arranged closely together and placed on shelving for logistical and storage purposes. Furthermore, the aspects of the present invention relate to an arrangement and/or layout of antenna coils for example in an interrogator. There is disclosed a RFID interrogator and/or method of interrogating comprising an antenna, when activated, being adapted to radiate an interrogation signal in a first area, means adapted to shift the antenna within a second area, the second area being larger than the first area. The antenna may be mechanically moveable. | 01-16-2014 |
20140022059 | Radio Frequency Identification Reader and a Method for Locating a Tag by the Radio Frequency Identification Reader - A radio frequency identifying reader (RFID) and a method for locating a tag by the RFID includes transmitting, by the RFID reader, signals to the tag on at least two frequencies and receiving a corresponding reflection signal, combining, by the RFID reader, received reflection signals and acquiring the combined signal which is received, and mapping the combined signal that is received to a constellation point in a constellation map to locate the tag such that the tag can be more easily located. | 01-23-2014 |
20140028445 | CONTINUOUSLY MONITORED CORE TEMPERATURE SENSOR AND METHOD - A system that provides notice of a lost signal. A wireless device and a control device employ radio frequency identification (RFID) technology, which uses radio frequency signals to communicate with one another via communication link having a reception range. The control device transmits a signal to the wireless device via the communication link. The wireless device responds by transmitting a return signal via the communication link. The control device processes the return signal to determine if the wireless device is within the reception range, if not, the control device provides an audible, written or visual alarm. | 01-30-2014 |
20140035731 | METHOD AND APPARATUS FOR IMPROVING RECEPTION OF AN RFID TAG RESPONSE - A method and apparatus for improving reception of responsive RFID signals is provided. The method includes transmitting a plurality of interrogation signals each having a different polarization to activate one or more RFID tags. Responsive signals from the RFID tags are analyzed for receive symbol quality data to select a transmit polarization subset. These polarizations are then used for transmitting further interrogation signals to the RFID tags. The apparatus includes a dual element orthogonal radiator coupled to a transmitter and receiver. A processor controls the transmitter and receiver to transmit a series of RFID interrogation signals each having a different polarization, and receive a series of responsive signals from one or more RFID tags. The responsive signals are analyzed to select a particular a transmit polarization subset that will improve reception of future responsive signals from the RFID tags. | 02-06-2014 |
20140104043 | CONTEXT AWARE DETECTION AND MOBILE PLATFORM WAKE - A device includes a processor having a standby state, a control unit coupled to the processor to receive wireless identification information, and a storage device to store a processor wake policy. The control unit applies the policy to received wireless identification information to wake the processor. | 04-17-2014 |
20140111310 | SYSTEM FOR SIMULTANEOUSLY IDENTIFYING MASSIVE RFID TAGS USING HF BAND - A tag of an apparatus for simultaneously identifying massive tags according to the present invention may include an analog circuit unit to communicate with a reader through an analog signal and to receive energy via magnetic coupling with the reader. Further, the tag may include a digital circuit unit to be supplied with power from the analog circuit unit. The digital circuit unit may support a sleep mode for the tag to stand by in a low power state after transmitting an identifier (ID) to the reader and a wait mode for controlling random access to the reader. | 04-24-2014 |
20140118116 | Protection System For Radio Frequency Communications - A system for protecting radio frequency (RF) communications and related techniques includes generating masking signals at an RF device such as a radio frequency identification (RFID) card. | 05-01-2014 |
20140159870 | CONTACTLESS COMMUNICATION METHOD WITH NEGATIVE MODULATION - The present invention concerns a method of radio-frequency communication between a contactless transponder and a reader, in which at least one sideband of the carrier frequency is used for communicating a response from the transponder by modulation of the amplitude of this carrier frequency. The method is distinguished in that the modulation at least partly applies a modulation level greater than 100%, which causes a negative modulation. The invention also concerns a corresponding communication circuit. | 06-12-2014 |
20140197928 | SYSTEM FOR AND METHOD OF LOCATING RADIO FREQUENCY IDENTIFICATION (RFID) TAGS ASSOCIATED WITH ITEMS IN A CONTROLLED AREA - A radio frequency identification (RFID) tag reading system having a phased antenna array accurately locates RFID tags in a controlled area, by steering an interrogating beam over the controlled area to interrogate the tags and generate return modulated RF signals. A primary receiver steers a primary receive beam at a primary steering angle that is fixed during each tag interrogation. A primary demodulator demodulates and reconstructs the received return modulated signals. A secondary receiver, independently of the primary receiver, steers a secondary receive beam at a plurality of secondary steering angles. A secondary correlator/demodulator demodulates the combined return modulated signals, and utilizes the reconstructed signal reconstructed by the primary demodulator at each of the secondary steering angles. Both the primary and the secondary receivers cooperate to accurately locate the same tag. | 07-17-2014 |
20140253294 | OPERATIONAL PARAMETERS BASED ON PROXIMITY - A method is disclosed for controlling operational parameters of a wireless reader device and/or one or more other devices based on proximity of the wireless reader device to a wireless electronic circuit. At a first location, the wireless reader device and/or the one or more other devices are controlled based on a first operational parameter. At a second location, interrogation signals are transmitted from the wireless reader device, and response signals are received at the wireless reader device. The response signals are transmitted from the wireless electronic circuit in response to receiving the interrogation signals from the wireless reader device. The response signals convey a control parameter to the wireless reader device that is associated with a second operational parameter. Thereafter, the wireless reader device and/or the one or more other devices are controlled based on the second operational parameter. | 09-11-2014 |
20140266629 | METHODS, SYSTEMS AND DEVICES FOR ELECTRONIC ARTICLE SURVEILLANCE DEACTIVATION HAVING RANDOMIZED TRANSMISSION RATES - Methods, systems and devices for providing an interrogation signal from a handheld deactivation device for identifying a security tag. Identifying the security tag includes initiating an interrogation signal, wherein the interrogation signal includes plurality of transmission bursts and a plurality of random time periods to wait between transmission bursts such that a unique time period elapses between each of the plurality of transmission bursts. The interrogation signal is then transmitted by transmitting each of the plurality of transmission bursts for a portion of a duty cycle and interrupting transmission between each of the plurality of transmission bursts for one of the plurality of random time periods such that a unique and random time period elapses between each of the plurality of transmission bursts. The period transmission of the interrogation signal provides for improved battery life of a handheld scanning and deactivation device. | 09-18-2014 |
20140285324 | DETERMINING MOVEMENT OF A RADIO FREQUENCY IDENTIFICATION TAG USING A PHASE DIFFERENCE/FREQUENCY MODEL - Determining movement of a Radio Frequency Identification (RFID) tag first establishes a phase difference/frequency model comprising a set of phase-wrapped local rates-of-change and an intercept point. RFID tag readings are then made to measure phase differences between the interrogation signal and the tag response at different frequencies. A correlation is determined between the measured phase differences versus frequency and the phase-wrapped local phase rates-of-change of the phase difference/frequency model. If the correlation is better than or equal to a predetermined limit, the tag is stationary, or if the correlation is worse than the predetermined limit, the tag is moving. | 09-25-2014 |
20140306807 | WIRELESS SENSOR READER - A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits a narrowband, fixed frequency excitation pulse to cause the wireless sensor to generate a ring signal. The ring signal corresponds to the value of the physical parameter being sensed. The wireless sensor reader receives and amplifies the ring signal and sends the signal to a phase-locked loop. A voltage-controlled oscillator in the phase-locked loop locks onto the ring signal frequency and generates a count signal at a frequency related to the ring signal frequency. The voltage-controlled oscillator is placed into a hold mode where the control voltage is maintained constant to allow the count signal frequency to be determined. The low power, simple circuitry required to generate the excitation pulse allows the reader to be a small, battery operated unit. Alternative methods of frequency determination are also disclosed. | 10-16-2014 |
20140313015 | DEFINING A RADIO FREQUENCY IDENTIFICATION READ AREA - Defining a radio frequency identification read area includes a radio frequency identification (RFID) reader operable to read RFID tags within a specified read area. An RFID transmitter is coupled with the RFID reader and is operable to radiating a modulated carrier in an area adjacent to the specified read area. The RFID reader controls the RFID transmitter to transmit the modulated carrier during a preamble transmission of the RFID reader to prevent any RFID tags in the adjacent area from recognizing an interrogation signal from the RFID reader. | 10-23-2014 |
20140354413 | CHARGE-PUMP CIRCUIT FOR IMPROVING READ DISTANCE - A system and method for improving the read distance of a transponder. The transponder comprises an antenna receiving energy from an interrogation signal, a resonant capacitor coupling with the antenna to form a tuned circuit, a charge-pump circuit to multiply voltage derived from the tuned circuit and a storage capacitor to store the voltage which has been multiplied by the charge-pump circuit. | 12-04-2014 |
20140354414 | RFID AND APPARATUS AND METHODS THEREFOR - A method of reading an RFID tag ( | 12-04-2014 |
20150015374 | SYSTEM, METHOD, COMPUTER PROGRAM AND DATA SIGNAL FOR THE COLLECTION, USE AND DISSEMINATION OF INFORMATION - The embodiments described herein relate to a system, method, computer program and data signal for the collection of information. The system comprises at least one computing system arranged to receive information from one or more unique identifying devices, wherein the computing system receives the information from the one or more unique identifying devices and processes the information in real time to determine whether an action should be taken. | 01-15-2015 |
20150022324 | Customized Content for Electronic Devices - A method for providing customized content to an electronic device. The method may include activating the electronic device through a packaging that substantially surrounds the electronic device, without substantially damaging or removing the packaging. Once the device is activating, connecting the electronic device to a content and providing the content to the electronic device without substantially damaging or removing the packaging. | 01-22-2015 |
20150042457 | Systems and Methods for Verifying a Chip - Disclosed is a system and method for verifying a chip having a memory. Remanufacturers of imaging devices, such as inkjet printers or electrostatic printers, often have to use a replacement chip in order to reuse an imaging cartridge. It is desirable to have a system and method for determining if the replacement chip is suitable for use with a specific imaging cartridge. Also, it may be desirable to confirm that the chip was manufactured by a specific manufacturer. The disclosed system and method allow the remanufacturer a reliable and efficient way to verify chips. | 02-12-2015 |
20150054627 | OBJECT MANAGEMENT SYSTEM AND METHOD - An object management system that includes at least one object identification device to be secured to an associated object. The object identification devices provide radio frequency signals containing object identification codes. The system includes at least one user identification device providing a radio frequency signal containing a user identification code and a control unit having a reader for receiving and reading the signals provided by the user identification devices and the object identification devices. One aspect provides a remote unit that communicates directly with the control unit to receive information associated with a condition of the object management system at a location remote from the control unit. The remote unit is further configured to be carried by a user and configured to communicate information and/or an alert to the user, wherein the information and/or the alert is associated with the condition of the object management system. | 02-26-2015 |
20150061835 | 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. | 03-05-2015 |
20150061836 | ASSIGNABLE SWITCH FOR PORTABLE DEVICES - An RFID transponder comprising a manual switch is disclosed for use in close proximity with a mobile electronic device having an RFID transceiver, such as a telephone or a table computer. Actuating the manual switch causes the mobile device to perform a predetermined action. The predetermined action can be programed in the mobile device such that the effect on the mobile device of closing the manual switch depends on the programed state of the mobile device. The transponder acts as an additional programmable manual input and can be used, for example, to initiate a telephone call in a mobile phone or an application program in a phone or tablet computer. | 03-05-2015 |
20150084744 | DIRECTIONAL ANTENNA FOR RFID TAG FINDER - A system may include a mobile device comprising an antenna system. The antenna system may include a first antenna to determine a presence of a transponder within an area and a second antenna comprising a directional radiation pattern and that is configured to sweep the area to determine a direction of the transponder. The first antenna may be separate from the second antenna. | 03-26-2015 |
20150084745 | Misplaced Article Recovery Process - A misplaced article recovery system utilizing an application operating on a computing device, such as a point of sale system, a Smartphone, a tablet, and the like. A unique article registration identifier (numeric or alphanumeric) is associated with a registrant. A tag, label, or other identifying element is attached or permanently applied onto (etched, printed, etc.) each desired article. An application operating on an application hosting device obtains the unique article registration number and a current location of the misplaced article. The article registration identifier and reported article location are forwarded to an article return service provider. The article return service provider determines the rightful owner and associated contact information, then informs the owner that the article has been reported at the current article location. The owner returns to the reported location and retrieves the misplaced article. The system maintains privacy and anonymity between parties. | 03-26-2015 |
20150116091 | DEVICE FOR AIDING THE LOCATION IN REAL TIME OF A SELF-POWERED MOBILE ELEMENT - A device aimed for locating in real time self-powered mobile elements by electromagnetic radiation, includes elements ( | 04-30-2015 |
20150332072 | METHOD AND SYSTEM FOR IMPROVING READING RANGE OF FDX RFID TAGS - A system and method comprising an RFID scanner, a reader or an interrogator for interrogating a transponder of a desired RFID tag to be interrogated; a transmission device for transmitting a desired carrier signal toward the RFID tag to be interrogated; a receiving device for receiving an RFID signal from the RFID tag to be interrogated; a processing device for removing the carrier signal from the RFID signal and thereby leaving an encoded data field of the RFID tag to be interrogated and processing the encoded data field for determining a start bit sequence of the encoded data field for at least one scan; and an averaging device for averaging the encoded data fields of at least two scans with one another and facilitate reading the encoded data field of the RFID tag to be interrogated. | 11-19-2015 |
20160065270 | METHOD AND APPARATUS FOR ACTIVATING SCAN FUNCTION - A method and electronic device for receiving information is provided. The method includes transmitting, by the electronic device, a scan time and an identification of the information to cause the identified information to be broadcast at the scan time; and scanning, by the electronic device, during the scan time to receive the information. The electronic device includes a transmitter configured to transmit a scan time and an identification of the information to cause the identified information to be broadcast at the scan time; and a scanner configured to scan during the scan time to receive the information. | 03-03-2016 |
20160078255 | METHOD AND DEVICE FOR READING RFID/UHF LABEL BASED ON AUDIO INTERFACE - A method and a device for reading RFID/UHF label based on an audio interface are disclosed. According to the method, a built-in software module in an electronic device converts a first digital signal into an analogue signal capable of being transmitted via the audio interface; the analogue signal received by the audio interface is converted into a second digital signal via an audio communication circuit; then the RFID/UHF controller for digital signal control reads information from the RFID/UHF label; the RFID/UHF controller modulates and sends signals of a plurality of different frequency points, and the signal of every frequency point forms a signal channel. Compared with the prior art, the present invention can keep long-distance communication between the electronic device and a plurality of labels. | 03-17-2016 |
20160078257 | ULTRAHIGH FREQUENCY RFID (RADIO FREQUENCY IDENTIFICATION) READER WITH SIGHTING FUNCTION - An ultrahigh frequency (UHF) radio frequency identification (RFID) reader with sighting function for reading RFID tag is mainly formed by a RF antenna and a controller, wherein the physical appearance of the RF antenna is formed with a sighting portion. In reading operation, users can aim the sighting portion of the RF antenna at a RFID tag at a remote location by visual mode so that the RF antenna can finish the reading operation promptly and accurately. Therefore, the reading accuracy and efficiency and power consumption can be improved. | 03-17-2016 |
20160086002 | CARD READER AND METHOD OF OPERATING THE SAME - A card reader performing a wireless communication with a card includes a first pulse generation unit generating a first detection pulse for detecting the card, a second pulse generation unit generating a plurality of second detection pulses for detecting the card, or a plurality of communication pulses for communicating with the card, and a card detection unit for sensing a card being detected by the first detection pulse or the second detection pulses. In the case that the card is not sensed through the first detection pulse, the second pulse generation unit generates the second detection pulses using the communication pulses and senses the card using the second detection pulses. | 03-24-2016 |
20160086003 | METHOD AND APPARATUS TO MITIGATE MULTIPATH IN RFID - A distance between at least one antenna of an interrogation system and a transponder, such as an RFID tag, is determined based on derivatives with respect to frequency of the phase and the signal strength of responses transmitted by the transponder and received at the at least one antenna. The derivatives of the phase and the signal strength facilitate compensating for sources of multipath interference. Determining changes in distance may further facilitate determining location, speed, or bearing of the transponder by the interrogation system. | 03-24-2016 |
20160092704 | RFID READER INTEGRATION WITH A LIGHT SOURCE - Disclosed are various embodiments for a light bulb or other type of lighting fixture that integrates a light source and a radio frequency identification (RFID) reader. Embodiments of the disclosure can also forward identifiers corresponding to RFID tags detected by the RFID reader to another computing device that can facilitate identification of products or items associated with the RFID tags. RFID tags are energized with interrogator signals and/or an electromagnetic field emitted from the RFID reader and submit a response, which can be forwarded, or data extracted and transmitted, to another computing device. | 03-31-2016 |
20160098584 | A CODED LIGHT DEVICE, AND A PRODUCT INFORMATION SYSTEM COMPRISING SUCH A CODED LIGHT DEVICE - A coded light device comprising a light source configured to emit coded light, an identifier detection unit configured to detect a product identifier, and a processing unit having a code generator configured to generate a product-related code on basis of the product identifier, and a light source controller configured to control the light source to emit the product-related code by coding its light output. | 04-07-2016 |
20160116579 | SYSTEMS AND METHODS FOR VERIFYING A LOCATION OF AN ITEM - A method for use in verifying a location of an item aboard a vehicle is provided. The method includes receiving, by a transceiver device located in the vehicle, at least one radio frequency identification (RFID) signal. Each RFID signal is associated with an RFID tag of an item aboard the vehicle. The method additionally includes processing the at least one RFID signal and transmitting, by the transceiver device, the at least one RFID signal to a passenger compartment of the vehicle. | 04-28-2016 |
20160117531 | METHOD FOR DETERMINING EXISTENCE OF WIDEBAND IMPEDANCE MATCHING CIRCUIT IN A WIRELESS IC DEVICE SYSTEM - An accessory device to be mounted on a main device is provided with a wireless IC device. The main device is provided with a reader/writer that is an interrogator that communicates with the wireless IC device of the accessory device. When the accessory device is mounted on or about to be mounted on the main device, the reader/writer selects two or more frequencies in a frequency band in which an authentic wireless IC device can communicate to perform communication with the wireless IC device. With this configuration, even if the identification code written in an RFID tag is read and the RFID tag is duplicated, the duplicated RFID tag can be accurately and effectively determined as being counterfeit. | 04-28-2016 |
20160117535 | NON-CONTACT COMMUNICATION METHOD DETERMINATION CIRCUIT, NON-CONTACT COMMUNICATION CIRCUIT, AND IC CARD - A non-contact communication method determination circuit includes a determiner which determines whether or not a binary signal of a received radio signal is a binary signal of a radio signal with any of a plurality of first non-contact communication methods, wherein the determiner is configured to detect a time interval between edges of the binary signal, and compares the detected time interval with a predetermined time interval between edges of a binary signal in the plurality of first non-contact communication methods, so as to determine whether or not the binary signal of the received radio signal is the binary signal of the radio signal with any of the plurality of first non-contact communication methods, and the time interval between the edges of the binary signal is a time interval between falling edges of the binary signal, or a time interval between raising edges of the binary signal. | 04-28-2016 |
20160132705 | Method and System for Autonomous Vehicles - A method and system for facilitating cost effective, reliable, system redundant, self-driving vehicles involves the employment of specialized lane marking components that permit unprecedented sensor feedback, and in particular, a system and method that enables accurate lane marking recognition despite adverse weather conditions, which presently pose problems experienced by self-driving systems that rely upon vision based camera systems. | 05-12-2016 |