KEYSTONE TECHNOLOGY SOLUTIONS, LLC Patent applications |
Patent application number | Title | Published |
20120268308 | Systems and Methods to Use Radar in RFID Systems - Systems and methods to use radar systems for radio frequency identification (RFID) applications. In one embodiment, radar systems are adapted to use RFID communications protocols and methods to enhance the usefulness of radar systems beyond the determination of the presence, distance, direction and/or speed of a vehicle or object, to additionally include the transmission of data such as object identification and additional messages or data. | 10-25-2012 |
20120268253 | Systems and Methods to Determine Motion Parameters Using RFID Tags - Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag. | 10-25-2012 |
20110279232 | SYSTEMS AND METHODS TO SELECTIVELY CONNECT ANTENNAS TO RECEIVE AND BACKSCATTER RADIO FREQUENCY SIGNALS - Systems and methods to selectively attach and control antennas via diodes and current sources. In one embodiment, a system includes: an RFID reader having a plurality of reader antennas of different polarizations to transmit radio frequency signals; and at least one RFID tag. The RFID tag includes: a plurality of tag antennas of different polarizations; a plurality of diodes coupled to the plurality of tag antennas respectively; a receiver coupled to the plurality of diodes to receive the radio frequency signals from the tag antennas when the diodes are forward biased; and a set of one or more current controllers coupled to the plurality of diodes. In a receiving mode the controllers selectively forward bias the diodes to receive the signals from the RFID reader. In a transmitting mode the controllers selectively change the state of the tag antennas to transmit data via backscattering the radio frequency signals. | 11-17-2011 |
20100073139 | Electronic Monitoring Systems, Shipment Container Monitoring Systems and Methods of Monitoring a Shipment in a Container - A shipping container has a passive radio antenna element having internal and external antennas. A connector spanning the wall joins the two antennas. An internal communications device is disposed within the container and an external communications device is disposed external to the container. Another shipping container has a repeater element having internal and external antennas. A repeater unit spans the wall joining the two antennas. A communications device is disposed within the container and another communications device is disposed externally. RF signals are re-radiated by the antennas. Methodology includes emitting RF signals from a communication device disposed at a first location, receiving the signals through an antenna comprised by an antenna element, and re-radiating the signal from a second antenna comprised by the element, where the element spans the wall of a shipping container. The re-radiated signal is received by a second communications device disposed at a second location. | 03-25-2010 |
20100013637 | Radio Frequency Identification Devices, Remote Communication Devices, Identification Systems, Communication Methods, and Identification Methods - The present invention provides radio frequency identification devices, remote communication devices, identification systems, communication methods, and identification methods. A radio frequency identification device according to one aspect includes a substrate; communication circuitry coupled with the substrate and configured to receive a wireless signal including an identifier, to process the identifier of the wireless signal and to output a control signal responsive to the processing of the identifier; and indication circuitry coupled with the communication circuitry and configured to receive the control signal and to indicate presence of the radio frequency identification device responsive to the control signal. A communication method according to another aspect includes providing a radio frequency identification device; receiving a wireless signal including an identifier within the radio frequency identification device; processing the identifier; generating a control signal after the processing; and indicating presence of the radio frequency identification device using indication circuitry of the radio frequency identification device responsive to the control signal. | 01-21-2010 |
20090322491 | Method of Addressing Messages and Communications System - A method of establishing wireless communications between an interrogator and individual ones of multiple wireless identification devices, the method comprising combining tree search and Aloha methods to establish communications between the interrogator and individual ones of the multiple wireless identification devices without collision. A system comprising an interrogator, and a plurality of wireless identification devices configured to communicate with the interrogator in a wireless fashion, the respective wireless identification devices having a unique identification number, the interrogator being configured to employ tree search and Aloha techniques to determine the unique identification numbers of the different wireless identification devices so as to be able to establish communications between the interrogator and individual ones of the multiple wireless identification devices without collision by multiple wireless identification devices attempting to respond to the interrogator at the same time. | 12-31-2009 |
20090315683 | Analog RFID System - Methods and apparatus, including computer program products, for an analog RFID system. A radio frequency identification (RFID) device includes an antenna linked to an integrated circuit, the integrated circuit comprising tag circuitry and analog modulation circuitry, a device linked to the integrated circuit, the device generating an analog signal output, and the analog modulation circuitry configured to conditioning the analog signal output. | 12-24-2009 |
20090303005 | Systems and Methods to Determine Kinematical Parameters using RFID Tags - Systems and methods to determine kinematical parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, one of a population of RFID tags is selectively instructed by an RFID reader to backscatter the interrogating electromagnetic wave and thus allow the RFID reader to measure the position, speed, acceleration, jerk of the object to which the tag is attached. The RFID reader combines the signal representing the backscattered interrogating electromagnetic wave and the signal representing the interrogating electromagnetic wave transmitted by the RFID reader to determine or monitor one or more of the kinematical parameters of the object. | 12-10-2009 |
20090303004 | Systems and Methods to Determine Motion Parameters using RFID Tags - Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag. | 12-10-2009 |
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 |
20090284377 | Flexible RFID Label - A radio frequency identification (RFID) tag includes a base supporting an integrated circuit and a first antenna orthogonal to a second antenna, the first antenna and the second antenna coupled to the integrated circuit, and a first fold in the base that when creased, defines two lobes lying in two planes, a first lobe including a first portion of the first antenna positioned in an x-axis relative to the second antenna oriented along a y-axis, and a second lobe including a second portion of the first antenna positioned in a z-axis relative to the first portion of the first antenna and second antenna. | 11-19-2009 |
20090278688 | RFID Devices Using RFID Circuits and Antennas Having Unmatched Frequency Ranges - An RFID system in which RFID devices utilize RFID circuits and antennas having unmatched frequency ranges. The system includes an RFID interrogator having multiple interrogator antennas. Each interrogator antenna can be tuned to different respective frequency ranges. The system includes an RFID device having an RFID circuit, and device antennas coupled to the RFID circuit. Each device antenna can be tuned to a respective frequency range that matches only one of the interrogator antennas for communicating with the RFID interrogator according to respective protocols associated with each respective frequency range. | 11-12-2009 |
20090273473 | Power Conserving Active RFID Label - Methods and apparatus, including computer program products, for a power conserving active RFID label. A system for performing radio frequency (RF) communications includes a radio frequency identification (RFID) tag attached to one or more items to be tracked, the RFID tag configured to receive a request and a time interval indicating a time for determining a temperature and a battery voltage, and to adjust the time interval at a time of determining the temperature and the battery voltage if the detected voltage is less than a predetermined voltage, and an interrogator communicatively coupled to one or more antennas to transmit one or more requests to the RFID tag and to receive one or more responses, at least one response including a time, temperature and battery voltage. | 11-05-2009 |
20090273453 | Item Identification Using RFID - Methods and apparatus, including computer program products, for item identification using RFID. A system includes a radio frequency identification (RFID) interrogator, and a computer coupled to the RFID interrogator, the computer including a database comprising RFID identification codes and items associated with the RFID identification codes, two or more the RFID identification codes associated with a single item. | 11-05-2009 |
20090273449 | RFID Interrogator With Adjustable Signal Characteristics - A radio frequency identification (RFID) interrogator housed in a portable platform that includes at least one antenna, a transceiver for transmitting and receiving a radio frequency (RF) signal through the antenna, and a controller in communication with the transceiver for adjusting power and direction of the transmitted RF signal. The controller can be configured to adjust the antenna orientation, and can also selectively activate and deactivate one or more antennas. | 11-05-2009 |
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 |
20090266896 | Methods and Systems of Attaching a Radio Transceiver to an Antenna - Methods and systems of attaching a radio transceiver to an antenna. At least some of the illustrative embodiments are systems comprising an antenna and an integrated circuit configured to operate as a radio transceiver. The antenna comprises a ground plane having a first edge surface, and an active element having a second edge surface. The ground plane and the active element are retained together such that the first and second edge surfaces are substantially coplanar and form an antenna edge. The integrated circuit is configured to operate as a radio transceiver, and the integrated circuit is mechanically coupled to the edge of the antenna and electrically coupled to the active element. | 10-29-2009 |
20090257474 | Fast hop frequency hopping protocol - Methods and apparatus, including computer program products, for a fast hop frequency hopping protocol. A method includes transmitting from a radio frequency identification (RFID) interrogator a continuous wave un-modulated radio frequency (RF) signal conforming to a fast hop frequency hopping protocol in which each hop of a plurality of hops spans at least one bit but less than the totality of bits to be sent from a single RFID device data in a single communications session. | 10-15-2009 |
20090257473 | RFID Fast Hop Frequency Hopping - Methods and apparatus, including computer program products, for RFID fast hop frequency hopping. A method including transmitting from a radio frequency identification (RFID) interrogator a continuous wave un-modulated radio frequency (RF) signal from a frequency synthesizer based on digital waveform reconstruction with Direct Memory Access (DMA), the continuous wave un-modulated RF signal conforming to a fast hop frequency hopping protocol in which each hop of a plurality of hops spans at least one bit but less than the totality of bits to be sent from a single RFID device data in a single communications session. | 10-15-2009 |
20090214037 | Methods and Apparatuses to Secure Data Transmission in RFID Systems Against Eavesdropping - Methods and apparatuses to secure data transmission in a radio frequency identification (RFID) system and other Vernam-cipher based cryptography methods against eavesdropping. In one embodiment, a method implemented in an RFID system includes generating an encryption key using previously shared information and random information received in a current communication session and securing a communication in the current session using the encryption key. | 08-27-2009 |
20090109041 | RFID LABEL TIME SYNCHRONIZATION - Methods and apparatus, including computer program products, for radio frequency identification (RFID) label time synchronization. A method includes, in a radio frequency identification (RFID) interrogator having an antenna, transceiver, a clock, a memory and a central processing unit (CPU), initializing a RFID tag with a label start time and a time to record data, the label start time representing an actual start time indicated by the clock, receiving a label stop time, a label time and logged data from an interrogation of the RFID tag, and compensating the label time for a drift between the label stop time and an actual stop time. | 04-30-2009 |
20090091428 | Method and System to Determine Physical Parameters as Between an RFID Tag and a Reader - A method and system to determine physical parameters as between an RFID tag and a reader. At least some of the illustrative embodiments are methods comprising generating an antenna feed signal, and transmitting a first electromagnetic wave to a radio frequency device (by coupling the antenna feed signal to a reading antenna), receiving a backscattered electromagnetic wave from the radio frequency device to create a received signal, calculating a combined signal based on the antenna feed signal and received signal, and determining relative velocity between the radio frequency device and the reading antenna based on the combined signal. | 04-09-2009 |