Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
3838results about "Memory record carrier reading problems" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Method and system for calculating and verifying the integrity of data in a data transmission system
ActiveUS7987405B2Not having capability to accuratelyStay flexibleError preventionMemory record carrier reading problemsComputer hardwareData integrity
A method is described of calculating and verifying the integrity of data in a data communication system. The system comprises a base station and one or more remote stations, such as in an RFID system. The method includes transmitting a select instruction from the base station to the one or more remote stations, the select instruction containing a data field which matches a portion of an identity or other data field in one or more of the remote stations; transmitting from a selected remote station or stations a truncated reply containing identity data or other data of the remote station but omitting the portion transmitted by the base station; calculating in the base station a check sum or CRC from the data field originally sent and the truncated reply data received and comparing the calculated check sum or CRC with the check sum or CRC sent by the remote station.
Owner:ZEBRA TECH CORP
Interference protection
InactiveUS7239657B1Memory record carrier reading problemsTransmissionInterference resistanceChecksum
Apparatus and a method for enhancing the interference resistance of so-called RFID systems, wherein identification messages delivered from an identification device are longer than the time for which an anticipated interference or disturbance is calculated to continue, and wherein the messages contain redundancy, such as a checksum. The messages are delivered from the identification device repetitively, and are redundancy checked. In the event of any discrepancy in the redundancy check, such as when the checksum is checked against the data content of the message and is found in disagreement, successive messages are checked bit for bit against each other. Any deviations between otherwise previously rejected messages are assumed to be due to external interference and are thus successively substituted until the redundancy check gives an accepted result, such as through the medium of a checksum check according to the so-called CRC method.
Owner:TAGMASTER AB
Method and system for correctly identifying specific RFID tags
ActiveUS8659397B2Electric signal transmission systemsMemory record carrier reading problemsComputer scienceSignal parameter
A system and method for identifying a specific RFID tag includes RFID reader circuitry, such as within an RFID reader, configured for sending and receiving RF signals to detect RFID tags and for obtaining signal parameter information associated with the RFID tags. Processing circuitry is configured for using the signal parameter information for one or more tags of the RFID tags and calculating a tag score for the one or more RFID tags. The processing circuitry is further configured for determining a specific RFID tag using the tag scores for the one or more RFID tags.
Owner:VOCOLLECT
RFID mutual authentication verification session
ActiveUS7450010B1Privacy can be assuredElectric signal transmission systemsDigital data processing detailsMutual authenticationComputer security
Owner:AMTECH SYST
Apparatus for energizing a remote station and related method
InactiveUS6615074B2Eliminate needEasy to useElectrotherapyTelemetry/telecontrol selection arrangementsStored energyMiniaturization
Owner:PITTSBURGH UNIV OF
Testing automatic data collection devices, such as barcode, RFID and/or magnetic stripe readers
ActiveUS8944332B2Conveying record carriersTesting sensing arrangementsData acquisitionBarcode reader
Automatic data collection devices such as barcode readers, RFID readers, magnetic stripe readers and the like may be tested using ADC device test executables, modules or processes stored at a variety of network locations. One or more sets of tests or work lists may be defined to facilitate testing. Tests may be identified by name and / or keyword. Keywords may be indicative one or more functionalities tested by the respective ADC device test module.
Owner:INTERMEC IP CORP
Article locating and tracking apparatus and method
InactiveUS20050035862A1High resolutionLimited rangeInertial sensorsDiagnostic recording/measuringMonitoring systemEngineering
An activity based monitoring system is disclosed, the activity based monitoring system being configured to monitor a plurality of badges associated with a plurality of assets within a healthcare facility.
Owner:HILL ROM SERVICES
Dual mode tracking system
InactiveUS6353406B1Memory record carrier reading problemsCo-operative working arrangementsData warehouseDual mode
System for tracking mobile tags. Cell controllers with multiple antenna modules generate a carrier signal which is received by the tags. Tags shift the frequency of the carrier signal, modulate an identification code onto it, and transmit the resulting tag signal at randomized intervals. The antennas receive and process the response, and determine the presence of the tags by proximity and triangulation. The recursive-least squares (RLS) technique is used in filtering received signals. Distance of a tag from an antenna is calculated by measuring the round trip signal time. The cell controllers send data from the antenna to a host computer. The host computer collects the data and resolves them into positional estimates. Data are archived in a data warehouse, such as an SQL Server. Also disclosed is an article tracking system that supports both active and passive tags with a cell controller able to read both passive and active tag signals.
Owner:RF TECH +1
Scheduling in an RFID system having a coordinated RFID tag reader array
ActiveUS20060022800A1Improve reliabilityReduce the impactMemory record carrier reading problemsPosition fixationEmbedded systemWhole systems
A system and method of scheduling RFID tag interrogations by a plurality of RFID readers so as to mitigate the effects of interference within an RFID environment in which the readers are deployed, and to enhance the efficiency and reliability of the overall RFID system. The system includes a plurality of RFID receivers for receiving RFID tag data, a plurality of RFID tag interrogators for transmitting RF interrogation signals for interrogating RFID tags, and a controller for providing to at least one interrogator, at least one receiver, and at least one tag, a parameter associated with operational characteristics of the interrogator, the receiver, and the tag, respectively. The interrogator, the receiver, and the tag are operative, in response to receipt of the respective parameter, to modify its operational characteristics in accordance with the respective parameter, thereby avoiding interference at the receivers and the tags.
Owner:QUAKE GLOBAL +1
Intelligent station using multiple RF antennae and inventory control system and method incorporating same
ActiveUS7084769B2Boost RF signal strengthAntenna supports/mountingsCash registersControl systemEngineering
An inventory control system and method that tracks inventories of items with RFID tags, includes a reader unit and an intelligent station that tracks RFID tags to determine item information of items to be inventoried. The reader unit transmits and receives RF signals. The intelligent station includes a first RF antenna connected to the reader unit by a first transmission cable through a first switch, and one or more additional RF antennae connected to the reader unit by the same first transmission cable through additional switches. An inventory control processing unit receives item information from the intelligent stations to update inventory information regarding the items to be inventoried.
Owner:SENSORMATIC ELECTRONICS CORP
Method and apparatus for wireless network security
ActiveUS20070025265A1Error preventionFrequency-division multiplex detailsRadio frequency signalEngineering
In one embodiment, the present invention is a method and apparatus for wireless network security. In one embodiment, a method for securing a wireless computing network includes receiving a communication from an unidentified transmitter, identifying the transmitter in accordance with a fingerprint generated from one or more radio frequency signal characteristics extracted from the communication, and taking action in response to an identity of the transmitter.
Owner:SRI INTERNATIONAL
Operating systems for an RFID tag
ActiveUS9953193B2Enhanced radiationMemory record carrier reading problemsCo-operative working arrangementsComputer hardwareOperational system
Owner:TEGO INC
Apparatus for energizing a remote station and related method
InactiveUS6289237B1Eliminate needTelemetry/telecontrol selection arrangementsElectromagnetic wave systemStored energyMicroprocessor controller
Apparatus for remote interaction with an object of interest includes a remote station for obtaining information from the object of interest, a base station for transmitting energy in space to and communicating with the remote station and the remote station having a conversion device for energizing the remote station responsive to receipt of the transmitted energy. The energy may be of any suitable type including RF power, light, acoustic, magnetic energy or other form of space transmitted or "radiant" energy. The remote station does not have to contain a source of stored energy or a wired connection to a source of energy. The remote station receives the energy transmission and data transmission from the base station and transmits data to the base station. Microprocessor controllers may be provided for the base station and the remote station. The remote station may receive information from sensors and through one or more transponders sequentially communicate information to the base station. An associated method is provided.
Owner:UNIVERSITY OF PITTSBURGH +1
RFID device, system and method of operation including a hybrid backscatter-based RFID tag protocol compatible with RFID, bluetooth and/or IEEE 802.11x infrastructure
ActiveUS20030104848A1Near-field transmissionMemory record carrier reading problemsTransceiverAntenna impedance
An RFID system includes a hybrid backscatter-based RFID tag protocol-compatible with existing 802.11x / Bluetooth Standards as well as RFID standards. The tag is linked to a multi-protocol Interrogator via a generated RF Continuous Wave (CW) field. The tag includes an antenna coupled to an RFID and a Bluetooth / 802.11x transceiver section. A Protocol Processor services RFID and transceiver sections and is coupled to the antenna via a backscatter switch. The Interrogator can switch the tag to an RFID backscatter radiation mode where the processor switches the antenna impedance to reflect the CW signal. For transceiver operation the processor switches antenna impedance in synchronization with a frame organized bit stream. For reception, the RFID section utilizes demodulation techniques, typically Amplitude Shift Keying (ASK), and provides a wake up mode within a predetermined distance of the Interrogator. The transceiver may operate in a backscatter or regular mode as directed by an Access Point.
Owner:GOOGLE TECH HLDG LLC
Article locating and tracking apparatus and method
An activity based monitoring system is disclosed, the activity based monitoring system being configured to monitor a plurality of badges associated with a plurality of assets within a healthcare facility.
Owner:HILL ROM SERVICES
Secure credit card with near field communications
ActiveUS7128274B2Facilitate communicationIncrease speedAcutation objectsMemory record carrier reading problemsComputer hardwareCredit card
A near field communication device included in a secure transaction card provides an addition and / or transitional communication link for communicating secure transaction information. The near field communication device may be selectively engaged or disengaged and, when engaged, either active or passive modes of operation of the near field communication device can be selected. in the active mode, secure transaction information is transmitted upon establishment of a communication link with a complementary near field communication device. In the passive mode, secure transaction information is transmitted upon interrogation from a complementary near field communication device. Secure transaction information is generated and stored for transmission in a memory and at least a portion of the memory is erased or nulled upon transmission or upon expiration of a selected period of time.
Owner:EBAY INC
RFID tag facility with access to external devices
ActiveUS20100134257A1Memory record carrier reading problemsDigital storageInformation processingComputer hardware
In embodiments of the present invention improved capabilities are described for a passive radio frequency identification (RFID) tag, where the passive RFID tag contains an RF network node and communication facility. The RF network node includes an RF and analog block for receiving and transmitting an RFID reader signal, a data processing and controller block for digital information processing, a memory store, and a power management block for managing power requirements of the RF network node. The communication facility communicates at least in part with an external display facility. The distribution of power to the RF network node functional blocks is controlled using the power management block to select between an extended operational time and an increase in available functionality.
Owner:TEGO INC
Shopping cart with RFID capability
ActiveUS7225980B2Credit registering devices actuationMemory record carrier reading problemsEngineeringEmbedded system
Owner:IND TECH RES INST
Passive dynamic antenna tuning circuit for a radio frequency identification reader
InactiveUS20070013483A1Efficient and economical and reliableMemory record carrier reading problemsSubscribers indirect connectionEngineeringBiological activation
A resonant antenna circuit for a radio frequency identification (RFID) reader generates an electrical signal for activating a passive identification tag. The identification tag in turn generates a coded electrical signal that is detected by the reader. The electrical characteristics of the resonant circuit are dynamically altered so that the antenna performs more optimally as a transmitter and receiver for different types of transponders. The resonant circuit uses only passive components and the instantaneous resonant frequency tuning point is determined by the state of the activation signal transmitter.
Owner:ALLFLEX USA
Location virtualization in an RFID system
ActiveUS20060170565A1Improve reliabilityRandom number generatorsFrequency-division multiplex detailsVirtualizationRadio frequency
A system and method of determining locations of one or more RFID tags within an RFID environment. The system includes a plurality of RFID readers, each operative to transmit and receive RF signals for scanning a tag disposed within an RF coverage region associated with the reader, and for receiving tag data in response to the scanning of the tag. A plurality of sub-locations is determined within the environment, each corresponding to at least a portion of at least one of a plurality of RF coverage regions associated with the readers. The sub-locations are mapped to a plurality of predefined locations within the environment. A reader scans a tag, and receives tag scan data from the tag in response to the scanning of the tag. The tag scan data includes a tag identifier associated with the scanned tag. The tag scan data is mapped to the sub-locations based on the RF coverage region associated with the reader. The location of the scanned tag is then determined with reference to the predefined locations within the environment, based on the tag identifier included in the tag scan data, the mapping of the tag scan data to the sub-locations, and the mapping of the sub-locations to the predefined locations.
Owner:ODIN SOFTWARE INC +1
Interference monitoring in an RFID system
ActiveUS20060022815A1Electric signal transmission systemsMemory record carrier reading problemsEngineeringElectrical and Electronics engineering
A system and method for monitoring and characterizing various sources of RF interference within an RFID environment, and for adjusting the operational characteristics of an array of RFID readers within the system based on these interference characterizations. The system examines the received transmissions from readers in the network by controlling a calibration cycle or while they are operating as interrogators to determine interference parameters, and to verify the operation of the readers in the array. The system also examines outside sources of interference, and signal dependent interference. The interference characterization can also be estimated from a combination of calculations and co-monitoring.
Owner:ODIN SOFTWARE INC +1
Methods and apparatus for operating a radio device
ActiveUS7075412B1Improve efficiencyMemory record carrier reading problemsSubscribers indirect connectionRadio equipmentNetwork interface
A radio device such as a wireless tag reader communicates with multiple types of wireless identification tags in a monitored region. The radio device includes a network interface to receive messages transmitted over a network. In response to receiving a message indicating to reconfigure the radio device to support an additional wireless tag protocol, the radio is reconfigured to support communications with a corresponding new type of wireless identification tag in a monitored region. Based on this technique of reconfiguring the radio device via network messages, the radio device optionally supports additional, new or latest versions of wireless tag protocols without having to physically reprogram or replace the radio device.
Owner:NOVANTA CORP
RFID reader with multiple antenna selection and automated antenna matching
InactiveUS6903656B1Convenient to accommodateAccurate readingMemory record carrier reading problemsSubscribers indirect connectionAntenna matchingEmbedded system
The present invention features an RFID smart shelf reader capable of working with a wide range of antenna types and numbers. The smart shelf reader readily accommodates and accurately reads a diverse range of package shapes, sizes, and contents. Multiple tags in close proximity to one another are accurately read by the smart shelf reader. The reader includes features for optimizing its own interface by periodically recalibrating itself to the current antenna load characteristics caused by varying external conditions, primarily in the type, number, and position of merchandise items on the shelf proximate at least one of the antennas. An external I / O interface is provided for communication with a remote controller.
Owner:APPLIED WIRELESS IDENTIFICATIONS GROUP
Method and apparatus for selective blocking of radio frequency identification devices
ActiveUS6970070B2Enhanced consumer privacyIncreased complexityMemory record carrier reading problemsTime-division multiplexComputer hardwareRadio-frequency identification
Techniques are disclosed for providing enhanced privacy in an RFID system comprising a plurality of RFID devices, each having an associated identifier, and at least one reader which communicates with one or more of the devices. A blocker device is operative to receive a communication directed from the reader to one or more of the RFID devices, and to generate, possibly based on information in the received communication, an output transmittable to the reader. The output simulates one or more responses from at least one of the RFID devices in a manner which prevents the reader from determining at least a portion of the identifier of at least one of the RFID devices. The blocker device may itself comprise one of the RFID devices. In an illustrative embodiment, the output generated by the blocker device interferes with the normal operation of a singulation algorithm implemented by the reader.
Owner:EMC IP HLDG CO LLC
Object detection system
InactiveUS6624752B2Memory record carrier reading problemsCo-operative working arrangementsThe InternetComputer terminal
Owner:BLUELON
Multi-controller security network
InactiveUS7079020B2Improve reliabilityLow costMemory record carrier reading problemsElectric signalling detailsOperating energyMaster controller
A security network containing multiple controller functions that communicate using wireless communications. The controller functions are contained within base units. One controller function may be the master controller. Other controller functions may receive a copy of the configuration data contained within the master controller. If the master controller fails, another controller function may become the master controller. The controller functions may use encryption keys to encrypt and / or authenticate communications. Some base units may contain a telecommunications interface. Controller units may relay communications between themselves to reach a telecommunications interface. Controller functions located in different buildings may communicate. Controller functions may each receive wireless communications from a transponder and combine the received communications to reduce errors.
Owner:ADT US HLDG INC
Low-cost radio replacement utilizing RFID technology
InactiveUS6608551B1Memory record carrier reading problemsElectric/electromagnetic visible signallingComputer hardwareMobile device
A radio replacement using RFID technology in an RF-enabled device is provided. The RF-enabled handheld, portable, or otherwise mobile device is equipped with an RFID tag having read and write capability. Data exchange occurs between the RFID tag and a network of RFID interrogators placed to provide adequate coverage of the area over which the device might move. As a result of replacing a full functioning transmitting / receiving radio with an RFID tag, the cost of the RF-enabled device could be significantly reduced, its battery life could be extended, and it could operate in a frequency band that does not require FCC approval. Additionally, this invention could provide tracking and access control using the RFID tag and interrogators.
Owner:INTERMEC IP
Radio tag system and method with improved tag interference avoidance
InactiveUS6034603ASolution to short lifeLow costTicket-issuing apparatusRoad vehicles traffic controlTransceiverModularity
A data transmission system includes a reader transceiver and one or more tag transceivers. The reader transmits an activation signal to a tag. The tag selectively transmits a response signal to the reader at a specific time determined by a detected level of communications channel activity. The detector operates in a low-power standby state until the time it receives the activation signal, and then operates in an active state. The invention further incorporates a technique to maintain an extremely low power state to the tag during quiescent mode while retaining full sensitivity to reader activation signals. The reader transceivers are of a modular architecture with each module operating independently, yet in concert with the others. The modules are interconnected in a media independent method and can interact remotely with other modules.
Owner:AXCESS INT INC
Recharging apparatus
ActiveUS20060094425A1Electromagnetic wave systemFrequency-division multiplex detailsElectric powerFrequency band
An energy harvesting circuit has an active automatic tuning circuit to search for broadcast frequencies in a band of interest and selecting only those broadcast signals received with sufficient RF strength to be used in energy harvesting. This circuit would provide power storage devices with a circuit that has a means to select the ambient RF that can maximize or enhance the performance of an RFID circuit by increasing the amount of energy for harvesting. This automatic tuning would enable a power storage devices charger circuit to move from location to location without manual tuning of the circuit and increase the effective range of an RFID circuit.
Owner:UNIVERSITY OF PITTSBURGH
Diagnosis of programmable modules
InactiveUS20050258963A1Memory record carrier reading problemsDetecting faulty computer hardwareComputer hardwareDiagnostic data
An electronic diagnostic device for testing electronic monitoring tags for devices such as replaceable modules for a printing apparatus includes a tag reader with a reader wireless communication element. The tag reader is adapted to read tag diagnostic information from an electronic monitoring tag. The electronic diagnostic device further includes a data processor in communication with the tag reader. The data processor is adapted to determine from the tag diagnostic data whether the electronic monitoring tag is operating within predetermined parameters, to identify one of a predetermined set of error categories if the electronic monitoring tag is operating outside the predetermined parameters, and to generate error category information. The electronic diagnostic device further includes a results communication element adapted to communicate the error category information generated by the data processor. The diagnostic device may also communicate correction information to the electronic monitoring tag.
Owner:XEROX CORP
Features
- R&D
- Intellectual Property
- Life Sciences
- Materials
- Tech Scout
Why Patsnap Eureka
- Unparalleled Data Quality
- Higher Quality Content
- 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com