Radar Transponder System Patents (Class 342/42)
  • Patent number: 10374310
    Abstract: A tunable antenna device includes a substrate, a switch, a control circuit, an antenna and a frequency adjustment portion. The substrate includes first and second surfaces and first and second through-holes. The switch is on the first surface and includes first, second and first control terminals. The control circuit is on the first surface and electrically coupled to the first control terminal. The antenna is on the second surface and includes first and second radiation members. The frequency adjustment portion is on the second surface and includes first and second metal portions. The first metal portion includes a first interdigital structure electrically coupled to the first radiation member. The second metal portion includes second and third interdigital structures electrically coupled to the second radiation member. The second and third interdigital structures are electrically coupled to the first and second terminals through the first and second through-holes respectively.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: August 6, 2019
    Assignee: Compal Electronics, Inc.
    Inventors: En-Tsao Chang, Yi-Da Chen, Yi-Hsin Tsai
  • Patent number: 10192443
    Abstract: A host vehicle is provided with a detection device that detects the behavior of an object in the surroundings of the host vehicle in a non-contact manner. The host vehicle is also provided with the following: a warning device that performs a warning operation pertaining to a warning directed at a following vehicle that is traveling behind the host vehicle; and a control device that controls the warning device on the basis of the result of detection by the detection device. The control device controls the warning device so as to perform the warning operation in a case where the result of detection by the detection device indicates that the behavior of an object in the surroundings of the host vehicle corresponds to an unnatural behavioral pattern.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: January 29, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Yuji Kodama, Koji Nakatani, Hiroshi Saegusa
  • Patent number: 10181754
    Abstract: A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: January 15, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Ashish Khandelwal, Joseph M. Khayat, Yipeng Su, Robert A. Neidorff, Bharath B. Kannan
  • Patent number: 10132923
    Abstract: A method and system for controlling the transmission of power of request-response messages implemented by a system to prevent collisions between a first aircraft and a second aircraft. The method comprises measuring at least the value, referred to as the quality value, of a quantity representative of the reception quality of the transponder of the second aircraft and, implemented by the anti-collision device of the first aircraft, and a control step to control the transmission power of the radio-frequency signals carrying the request-response messages according to the quality value or values contained in the response messages sent by the transponder.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: November 20, 2018
    Assignee: AIRBUS OPERATIONS SAS
    Inventor: Jean-Luc Robin
  • Patent number: 10128916
    Abstract: A memory device may include an array of closely spaced memory integrated circuits that communicate wirelessly over at least two frequencies using near field coupling.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: November 13, 2018
    Assignee: Micron Technology, Inc.
    Inventor: Mostafa Naguib Abdulla
  • Patent number: 10062955
    Abstract: A sample analyzer and a method for obtaining reagent information are disclosed, wherein the sample analyzer analyzes a sample by using a reagent contained in a reagent container, comprising a first reagent container holder configured to hold a first reagent container containing a first reagent, a first electronic tag, on which a reagent information regarding the first reagent is recorded, attached to the first reagent container; a second reagent container holder configured to hold a second reagent container containing a second reagent, a second electronic tag, on which a reagent information regarding the second reagent is recorded, attached to the second reagent container; an antenna that is arranged between the first reagent container holder and the second reagent container holder, and is configured to receive a radio wave from each of the first and second electronic tags; and a reagent information obtainer unit configured to obtain the reagent information recorded on the first electronic tag based on a radi
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: August 28, 2018
    Assignee: SYSMEX CORPORATION
    Inventor: Kazutoshi Tokunaga
  • Patent number: 10038579
    Abstract: Disclosed examples include multichannel RF transponder circuits with multiple transponder channel circuits individually connected to a corresponding antenna circuit, a configurable shared modulation capacitor, a channel switching circuit to selectively connect the modulation capacitor to a selected transponder channel circuit, and a modulation circuit to selectively change the capacitance value of the modulation capacitor between two or more values according to a modulation control signal to transmit uplink data using the selected transponder channel circuit.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: July 31, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Ernst Georg Muellner
  • Patent number: 9954700
    Abstract: A transmitting apparatus for transmitting a frequency-modulated signal is provided. The transmitting apparatus includes a pilot tone generation device for generating a pilot tone. The transmitting apparatus also includes a modulation device for obtaining the generated pilot tone and a modulating useful signal and for generating a frequency-modulated signal based on a combination of the generated pilot tone and the modulating useful signal. The generated pilot tone has a frequency outside a frequency range of the modulating useful signal in order to vary a frequency range of the frequency-modulated signal.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: April 24, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralph Oppelt, Michael Wiehl
  • Patent number: 9953116
    Abstract: A simulation apparatus which simulates a position of each of a plurality of objects, which move in a virtual space together with time, at each of a plural calculation time is disclosed. The apparatus includes: an object connection block for applying, to each object of each three or more objects contacting with each other at each of the plural calculation time points, a pointer value indicative of a contact destination object with which the object is in contact determining one of the three or more objects as a terminal end to connect the objects; and a pointer value updating block for repeating a pointer value updating process, by which the pointer value of each object is updated to the pointer value of the contact destination object indicated by the pointer value until the pointer values of all of the objects come to indicate the object of the terminal end.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: April 24, 2018
    Assignee: Sony Interactive Entertainment Inc.
    Inventors: Hitoshi Ishikawa, Hiroshi Matsuike, Koichi Yoshida
  • Patent number: 9919677
    Abstract: A transponder is disclosed. The transponder includes a resonant circuit serving as an antenna, a load modulation module coupled to the resonant circuit, a current source coupled to the resonant circuit and a command interpreter configured to interpret a received initialization command. The command interpreter is configured to monitor input communication for a stop command signal and a charge & talk bit and if the charge & talk bit is not received within a predetermined time interval after receiving the stop command signal, the load modulation module is activated to provide a signal for transmission by modifying an incoming carrier wave through the load modulation module. If the charge & talk bit is received within the predetermined time after receiving the stop command signal, the current source is activated to provide a signal for transmission by generating pulses of current.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 20, 2018
    Assignee: NXP B.V.
    Inventor: Sven Simons
  • Patent number: 9869685
    Abstract: A sample analyzer including: a first reagent container holding unit; a second reagent container holding unit being arranged on one side of the first reagent container holding portion; a reagent information reading unit; and a control unit. The reagent information reading unit includes an electric wave emitting portion, which is arranged on the other side of the first reagent container holding unit, for emitting a plurality of electric waves having mutually differing reaching ranges, and the control unit controls the reagent information reading unit to switch the electric wave emitted from the electric wave emitting portion in accordance with a read target being the first electronic tag or the second electronic tag.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: January 16, 2018
    Assignee: Sysmex Corporation
    Inventor: Kazutoshi Tokunaga
  • Patent number: 9806748
    Abstract: The transponder comprises an antenna and a receiver circuit (2) for receiving RF signals, this receiver circuit is implemented with a control mechanism to activate it at least periodically in a listening mode. This receiver circuit is comprises a decoding circuit (4), formed at least by a demodulator (8) and a decoder (10), and a wake-up circuit (14B) to analyze received RF signals in the listening mode and arranged for controlling the activation of the decoding circuit in this listening mode. The wake-up circuit comprises a frequency discriminator (17) and a digital modulation or preamble detector (18) downstream from a field clock generator (28). The wake-up circuit receives as entry an alternating signal branched from the signal chain through the receiver circuit upstream from the demodulator and it activates the decoding circuit only when a modulation or a preamble is detected in a received RF signal by the digital modulation or preamble detector.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: October 31, 2017
    Assignees: EM Microeclectronic-Marin SA, SMARTRAC TECHNOLOGY Wehnrath GmbH
    Inventors: Michal Prazan, Michal Prokes, Jürgen Fehle, Ulrich Friedrich
  • Patent number: 9773133
    Abstract: An RFID tag possesses a group key issued by an authorized entity. When a reader requests some information from the tag, such as an identifier, the tag transmits a random number to the reader. The tag then determines one or more reader characteristics based on a response received from the reader. In one embodiment, the tag generates a verification value based on the random number and the group key and compares the verification value to the received response. If the comparison succeeds, the tag may treat the reader as possessing particular functionality, authorized to implement a particular feature, and/or authorized to receive information from the tag. If the comparison fails, the tag may treat the reader as lacking particular functionality, not authorized to implement a particular feature, and/or not authorized to receive information from the tag. The tag may request additional response(s) from the reader before determining the reader characteristic(s).
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: September 26, 2017
    Assignee: IMPINJ, INC.
    Inventors: Ron Oliver, Matt Robshaw, Tan Mau Wu
  • Patent number: 9697397
    Abstract: A system and method of using motion or spatial identification technology with a mobile RFID reader to detect whether an RFID tag is part of a forklift load or other ambulatory space such as a shopping cart receptacle, includes determining whether a tag is within a defined space and/or whether a tag is in motion relative to a mobile RFID reader. The system and method determines whether a particular RFID tag is part of a forklift load/space, has been added to or removed, is an extraneous tag, etc.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: July 4, 2017
    Assignee: INTERMEC IP CORP.
    Inventors: Steven V. Schatz, Gary Neal Spiess, Thaddeus Ternes, Maury Anderson, Hunter M. Leland
  • Patent number: 9639939
    Abstract: A method for vehicle positioning is provided, which includes the steps of identifying at least one vehicle in an image, obtaining identification information of each vehicle from the image, and transforming coordinates of each vehicle in the image into positioning information of the corresponding vehicle according to mapping information. The positioning information is a position of the corresponding vehicle in real world. Precise lane-level vehicle positioning can be achieved based on comparison with the identification information or the positioning information.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: May 2, 2017
    Assignee: Industrial Technology Research Institute
    Inventors: Yu-Chee Tseng, Lien-Wu Chen, Chia-Chen Chang, Yin-Chih Lu, Pei-Chuan Tsai
  • Patent number: 9563797
    Abstract: Provided herein is a system for transmitting data to an object travelling along a surface. The object preferably contains an antenna which produces a read range having a length (L) in the direction of travel and a width (W) substantially perpendicular to the direction of travel. A first plurality of RFID transponders may be positioned within a surface as a row which is substantially perpendicular to the direction of travel. A second plurality of RFID transponders may be positioned following the first row. Depending on the speed of the object travelling the surface at this location, more rows of transponders may be used. A method for placing the RFID transponders within the surface is also disclosed.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: February 7, 2017
    Assignee: ADAPTIVE CONTROLS HOLDINGS LLC
    Inventor: Ryan Smith
  • Patent number: 9564948
    Abstract: In one embodiment, a circuit, having a single supply, is provided to transmit a wireless signal with low common mode electromagnetic interference (EMI) emission. The circuit can achieve common mode attenuations of 40 dB or greater as a result of the symmetric built circuit. Also included is a system that includes a transmission circuit and a receiver circuit, and a method of using such a system.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: February 7, 2017
    Assignee: NXP B.V.
    Inventors: Siegfried Arnold, Robert Kofler, Davide Maschera, Bardo Mueller
  • Patent number: 9552725
    Abstract: A method and system for modeling and processing vehicular traffic data and information, comprising: (a) transforming a spatial representation of a road network into a network of spatially interdependent and interrelated oriented road sections, for forming an oriented road section network; (b) acquiring a variety of the vehicular traffic data and information associated with the oriented road section network, from a variety of sources; (c) prioritizing, filtering, and controlling, the vehicular traffic data and information acquired from each of the variety of sources; (d) calculating a mean normalized travel time (NTT) value for each oriented road section of said oriented road section network using the prioritized, filtered, and controlled, vehicular traffic data and information associated with each source, for forming a partial current vehicular traffic situation picture associated with each source; (e) fusing the partial current traffic situation picture associated with each source, for generating a single co
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: January 24, 2017
    Assignee: INRIX GLOBAL SERVICES LIMITED
    Inventors: Israel Feldman, Arie Trinker, Yochai Meltzer, Allon Eshpar, Amnon Lotem
  • Patent number: 9552539
    Abstract: A method of selectively addressing one or more transponders in a set (17) of transponders (21, 22, 23, 24, 25) is described. The method comprise transmitting a first set of one or more commands (25; 251, 252) selected to be not executable by a first subset (24; 242) of transponders or to be executable in a shorter time by the first subset of transponders than by a second subset of transponders (23; 231, 232) in the set, and transmitting a second set of one or more commands (26; 253) such that the second set of commands are received by the transponders while the second subset of transponders are still executing the first set of commands.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: January 24, 2017
    Assignee: FRIENDLY TECHNOLOGIES LTD.
    Inventor: Humberto Moran
  • Patent number: 9506709
    Abstract: A gun detection system and method to prevent school and business shootings is provided that is capable of detecting a firearm a significant distance away from the point of entry and triggering response of an alarm and an automatic door locking system.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 29, 2016
    Inventors: David Wayne Esposito, Lawrence E. Rode
  • Patent number: 9476974
    Abstract: A method for measuring the position of a surface of a vehicle on a roadway comprising the following steps: transmitting and receiving radar beams at transmitting and receiving positions in various primary transmitting and primary receiving directions and converting these beams into received signals; selecting the received signal having the greatest signal strength; and determining the aforementioned position from the transmitting and receiving positions and the primary transmitting and primary receiving directions of the received signal having the greatest signal strength.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: October 25, 2016
    Assignee: Kapsch TrafficCom AG
    Inventor: Oliver Nagy
  • Patent number: 9442549
    Abstract: Systems, apparatuses, and methods are configured to monitor signals received via a transmission medium by a paging monitor to detect an activity trigger. Systems, apparatuses, and methods are further configured to, in response to detecting the activity trigger, cause, by the paging monitor, a main receiver to transition from an energy conservation mode to an active mode to monitor the transmission medium for data traffic.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: September 13, 2016
    Assignee: Comcast Cable Communications, LLC
    Inventor: Mark Francisco
  • Patent number: 9429644
    Abstract: The various technologies presented herein relate to the determination of whether a received signal comprising radar clutter further comprises a communication signal. The communication signal can comprise of a preamble, a data symbol, communication data, etc. A first portion of the radar clutter is analyzed to determine a radar signature of the first portion of the radar clutter. A second portion of the radar clutter can be extracted based on the radar signature of the first portion. Following extraction, any residual signal can be analyzed to retrieve preamble data, etc. The received signal can be based upon a linear frequency modulation (e.g., a chirp modulation) whereby the chirp frequency can be determined and the frequency of transmission of the communication signal can be based accordingly thereon. The duration and/or bandwidth of the communication signal can be a portion of the duration and/or the bandwidth of the radar clutter.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: August 30, 2016
    Assignee: Sandia Corporation
    Inventors: Richard C. Ormesher, Richard M. Naething
  • Patent number: 9415658
    Abstract: A method of orientating a vehicle for a potential impact includes detecting an object proximate a vehicle with at least one sensor mounted to the vehicle, identifying if the object is a pedestrian, determining a potential for a collision between the object and the vehicle with a controller mounted within the vehicle and determining a vehicle orientation for mitigating damage based on the determined potential for collision. The determined vehicle orientation includes at least an independent determination of a ride height for each corner of the vehicle. The method further includes actuating a suspension component to move each corner of the vehicle to the determined ride height for that corner independent of the other corners of the vehicle to place the vehicle in an orientation determined to mitigate damage and injury. A controller provides the independent determination of a ride height for each corner of the vehicle.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: August 16, 2016
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Sunny Makkar, Christian Schallmeier
  • Patent number: 9407453
    Abstract: A method of medium access control (MAC) type detection for a communication device compatible of a plurality of media each conformed to a communication standard in a network system is disclosed. The method comprises generating a library, wherein the library includes at least a character for each medium, configuring a MAC layer of the communication device according to the library, and determining the existence of a medium according to the configuration result.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: August 2, 2016
    Assignee: ECONET (Suzhou) Limited
    Inventors: Chia-Wei Yen, Jian-Li Mao
  • Patent number: 9383441
    Abstract: A mobile device determines its location accurately by measuring the range to a position reflector as well as azimuth and elevation angles of arrival (AOA) at the reflector. The mobile can transmit a coded radar signal and process reflections to determine its location. The reflectors may include internal delays that can identify the reflector and provide transmit/receive separation for the mobile. The reflection can include a primary and further delayed secondary reflection. The mobile can determine the internal delay of the reflector based on the delay between primary and secondary reflections. The range and AOA information can be combined with information about the position, orientation, and characteristics of the reflectors to determine location. In some systems, the mobile device can determine its location in a three-dimensional space using reflections from only one reflector. The reflectors, which can be economically produced, can be unpowered and low profile for easy installation.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: July 5, 2016
    Assignee: Younis Technologies, Inc.
    Inventor: Saed G. Younis
  • Patent number: 9383426
    Abstract: A combination of active reader tags and ultra wideband (UWB) radar systems provide real-time monitoring of first responders, with identification of each team member using active tags, and detection of victims or other subjects using motion or breathing detection, in a field of operations such as a building affected by fire or hazardous material or search and rescue mission area. Initially, a cluster of miniaturized radars (sensors) act in a static mode of operation, gathering static radar information used to depict a constructed layout of the premises. The cluster of radars then operate in a dynamic mode that detects motion or breathing of multiple subjects inside the field of operations. With dual mode operation the system can read the active tags identification, and by triangulation, display the position of each first responder with its identification and positions of subjects on a composite image of the constructed layout.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: July 5, 2016
    Inventor: Farrokh Mohamadi
  • Patent number: 9381882
    Abstract: Disclosed herein is an external airbag deployment method. The method includes setting, by a controller, a detection area located in front. In addition, the method includes setting, by the controller, a target object from objects detected in the detection area, when an object has a relative velocity greater than a first reference, an overlap greater than a second reference, and a TTE less than a third reference, wherein TTE is a remaining time until the object collides with an airbag cushion when the external airbag is predicted to be deployed. Furthermore, the method includes determining, by the controller, whether a relative velocity and an overlap, predicted at a time when the target object is predicted to collide with the vehicle, are greater than predetermined levels and deploying the external airbag when the predicted relative velocity and overlap are greater than the predetermined levels.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: July 5, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yong Sun Kim, Seoung Hoon Lee, Ki Jin Kwon, Jin Ho Bae, Han Sung Lee
  • Patent number: 9362756
    Abstract: A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling having a primary side tank circuit receiving a signal from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal from a signal utilized to excite the primary side tank circuit. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: June 7, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ashish Khandelwal, Yipeng Su
  • Patent number: 9362755
    Abstract: A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: June 7, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ashish Khandelwal, Joseph M. Khayat, Yipeng Su, Robert A. Neidorff, Bharath B. Kannan
  • Patent number: 9305252
    Abstract: Methods, apparatuses and systems for radio frequency identification (RFID)-enabled information collection are disclosed, including an enclosure, a collector coupled to the enclosure, an interrogator, a processor, and one or more RFID field sensors, each having an individual identification, disposed within the enclosure. In operation, the interrogator transmits an incident signal to the collector, causing the collector to generate an electromagnetic field within the enclosure. The electromagnetic field is affected by one or more influences. RFID sensors respond to the electromagnetic field by transmitting reflected signals containing the individual identifications of the responding RFID sensors to the interrogator. The interrogator receives the reflected signals, measures one or more returned signal strength indications (“RSSI”) of the reflected signals and sends the RSSI measurements and identification of the responding RFID sensors to the processor to determine one or more facts about the influences.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 5, 2016
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Patrick W. Fink, Gregory Y. Lin, Timothy F. Kennedy, Phong H. Ngo
  • Patent number: 9189667
    Abstract: An article having a conductive body, a magnetic diverter, and a communication device is described. The magnetic diverter is positioned on an outer surface of the conductive body. The magnetic diverter covers a substantial portion of the outer surface of the conductive body. A communication device is positioned on the outer surface of the diverter or may be recessed therein. The communication device is capable of signal coupling with a reader.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 17, 2015
    Inventors: Jordan Todorov Bourilkov, Steven Jeffrey Specht, Sergio Coronado, Konstantin Dimitrov Stefanov, Suat Ayoz
  • Patent number: 9178690
    Abstract: System, methods and apparatus are described that facilitate transmission of data over a multi-wire data communications link, particularly between two devices within an electronic apparatus. Each symbol in a sequence of symbols received from a plurality of signal wires is received in an odd transmission interval or an even transmission interval. A first clock signal is generated from transitions in signaling state of the wires occurring between each odd transmission interval and a consecutive even transmission interval. A second clock signal is generated from transitions in signaling state of the plurality of wires occurring between each even transmission interval and a consecutive odd transmission interval. The first and second clock signals are used to capture symbols received in even and odd transmission intervals, respectively.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: November 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventor: Shoichiro Sengoku
  • Patent number: 9171467
    Abstract: Methods for identifying a vehicle using a predetermined location are provided, as well as a radio beacon and an onboard unit for use with the methods. One method comprises: carrying, on the vehicle, an onboard unit that broadcasts status messages that each indicate a current position of the onboard unit and a radio identifier that changes after each or several status messages; receiving at least one status message in a radio beacon; detecting a location usage of the vehicle by evaluating the status message(s) based on the position(s) indicated therein with respect to the predetermined location; transmitting an identification request from the radio beacon to the onboard unit addressed according to the radio identifier from the status message(s); receiving and conducting a legitimacy check of the identification request in the onboard unit and, if the request is legitimate, transmitting an identification of the onboard unit to the radio beacon.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: October 27, 2015
    Assignee: Kapsch TrafficCom AG
    Inventor: Refi-Tugrul Güner
  • Patent number: 9165234
    Abstract: According to one embodiment of the present invention, a method for determining the location of a subject is provided.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: October 20, 2015
    Assignee: CADI SCIENTIFIC PTE LTD
    Inventors: Zenton Goh, Sian Sheng Neo, Hon Cheong Ng, Soh Min Lim
  • Patent number: 9165170
    Abstract: An RFID tag is configured to adjust its current clock frequency to conserve tag power while receiving a reader signal and/or backscattering a signal. The tag may determine whether to adjust its current clock frequency based on one or more timing parameters, which may be determined from a reader command and/or from a signal to be backscattered. The counting rate and/or limit of a tag counter and/or the power supplied to a tag component may also be adjusted. The current tag clock frequency may be adjusted during the signal reception/backscattering process and optionally restored once the process is completed.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: October 20, 2015
    Assignee: Impinj, Inc.
    Inventors: Vadim Gutnik, Scott A. Cooper, John D. Hyde, Theron Stanford
  • Patent number: 9156482
    Abstract: A locator loop control system includes a guideway configured to define a travel path of a vehicle. The locator loop control system further includes a locator loop located along the guideway, the locator loop configured to exchange information with a vital on-board controller (VOBC) on-board the vehicle. The locator loop control system further includes a first proximity plate located along the guideway, the first proximity plate spaced a first distance along the guideway from the locator loop, and a wayside controller configured to communicate with the locator loop.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: October 13, 2015
    Assignee: Thales Canada Inc
    Inventors: Abe Kanner, Firth Whitwam, Mohammed El-Azizy, Philip Chorazy
  • Patent number: 9159224
    Abstract: Wireless data communication is implemented using respective carrier frequencies. As may be implemented in accordance with one or more embodiments and apparatuses herein, wireless communications are effected using a resonant circuit having a resonant frequency susceptible to detuning. Radio frequency power is transmitted to a remote transponder circuit, and wireless communications are effected with the remote transponder circuit via at least one of first and second different carrier frequencies, using the resonant circuit and the radio frequency power. The first and second carrier frequencies are respectively sufficiently proximate to the resonant frequency, such that signals communicated based on the resonant frequency can be acquired by demodulating based on the resonant frequency. One of the first and second carrier frequencies is selected based upon a signal sent from the transponder circuit.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: October 13, 2015
    Assignee: NXP B.V.
    Inventor: Juergen Nowottnick
  • Patent number: 9147344
    Abstract: Methods for identifying a vehicle using a predetermined location, and a radio beacon and an onboard unit are provided. One method comprises: carrying, on the vehicle, an onboard unit that broadcasts status messages that each indicate a current relative distance of the onboard unit from the predetermined location and a radio identifier that changes after each or several status messages; receiving at least one status message in a radio beacon; detecting a location usage of the vehicle by evaluating the status message(s) based on the indicated relative distance; transmitting an identification request from the radio beacon to the onboard unit addressed according to the radio identifier from the status message(s); receiving and conducting a legitimacy check of the identification request in the onboard unit; and if the request is legitimate, transmitting an identification of the onboard unit to the radio beacon that remains the same over changes of radio identifier.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: September 29, 2015
    Assignee: Kapsch TrafficCom AG
    Inventors: Oliver Nagy, Refi-Tugrul Güner
  • Patent number: 9143202
    Abstract: A NFC communicator or NFC communications enabled device has a data store to store data, a coupler to couple inductively with the magnetic field of a radio frequency signal and a signal generator to supply a radio frequency signal to the coupler. A modulator is provided to modulate a radio frequency signal in accordance with data and a demodulator is provided to extract data from a modulated radio frequency signal inductively coupled to the coupler. A controller enables the NFC communicator or NFC communications enabled device both to initiate near field radio frequency communication with another near field RF communicator and to respond to near field radio frequency communication initiated by another near field RF communicator. The NFC communicator or NFC communications enabled device also has a power deriver that derives power from a radio frequency signal inductively coupled to the coupler to charge a chargeable power supply.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: September 22, 2015
    Assignee: Broadcom Europe Limited
    Inventor: Peter Robert Symons
  • Patent number: 9134413
    Abstract: A tag decides a response based on a plurality of queries received from a reader, determines whether to transmit the response, transmits the response to the reader according to the results of the determination, and transmits a message authentication code including communication content to the reader. The reader calculates a consumed time period which is the time difference between a transmission time at which the queries are transmitted and a reception time at which the response is received, calculates an average consumed time period of the consumed time period, and measures a distance to the tag based on the average consumed time period. Accordingly, it is possible to check an attacker's intervention with a high probability, thereby improving distance measurement performance. Also, the tag may efficiently perform computing and communication.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: September 15, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Taek Young Youn, Do Won Hong
  • Patent number: 9087226
    Abstract: A system, method and computer program product according to one embodiment are provided for calibrating an RFID interrogator. A signal is sent from an interrogator to a calibration device. A backscatter signal is received from the calibration device. The backscatter from the calibration device is analyzed. An outgoing signal strength of the interrogator is adjusted based on the analysis. In a system, method and computer program product according to another embodiment, the interrogator is set to selectively respond to tags returning a backscatter signal strength selected based on the analysis. In a system, method and computer program product according to another embodiment, comparison criteria is selected based on the analysis of the backscatter signal. An RF device is instructed to store the comparison criteria, which is then used by the RF device to selectively respond to an interrogator signal having at least a desired strength.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: July 21, 2015
    Assignee: Intelleflex Corporation
    Inventors: Naresh Batra, Heena Nandu
  • Patent number: 9083204
    Abstract: A transmission-guard is disclosed for preventing an inductive power outlet from transmitting power in the absence of an inductive power receiver. A transmission lock is associated with an inductive power outlet and a transmission key is associated with an inductive power receiver. The transmission lock is configured to prevent a primary inductor from connecting to the power supply unless triggered by a release signal via the transmission key.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: July 14, 2015
    Assignee: Powermat Technologies, Ltd.
    Inventors: Yossi Azancot, Amir Ben-Shalom, Oola Greenwald, Arik Rofe, Alfred Lei-Bovitz, Moti Ashery
  • Patent number: 9076091
    Abstract: 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.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 7, 2015
    Assignee: Apple Inc.
    Inventors: Tyler Mincey, Andrew Hodge
  • Patent number: 9064196
    Abstract: An RFID tag is configured to adjust its current clock frequency to conserve tag power while receiving a reader signal and/or backscattering a signal. The tag may determine whether to adjust its current clock frequency based on one or more timing parameters, which may be determined from a reader command and/or from a signal to be backscattered. The counting rate and/or limit of a tag counter and/or the power supplied to a tag component may also be adjusted. The current tag clock frequency may be adjusted during the signal reception/backscattering process and optionally restored once the process is completed.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: June 23, 2015
    Assignee: Impinj, Inc.
    Inventors: Vadim Gutnik, Scott A. Cooper, John D. Hyde, Theron Stanford
  • Patent number: 9048696
    Abstract: A transmission-guard is disclosed for preventing an inductive power outlet from transmitting power in the absence of an inductive power receiver. A transmission lock is associated with an inductive power outlet and a transmission key is associated with an inductive power receiver. The transmission lock is configured to prevent a primary inductor from connecting to the power supply unless triggered by a release signal via the transmission key.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: June 2, 2015
    Assignee: POWERMAT TECHNOLOGIES, LTD.
    Inventors: Yossi Azancot, Amir Ben-Shalom, Oola Greenwald, Arik Rofe, Alfred Lei-Bovitz, Moti Ashery
  • Patent number: 9024803
    Abstract: A method for detecting a message provided with a preamble with a number of pulses in a signal sent by an interrogator or a transponder in mode S, said method including a step for decomposition of said signal into an amplitude signal and into a complex phase signal, a step for detection of said preamble by correlating the amplitude signal with a replica signal of the expected pulses, and a phase control step executed by adding together the samples of the phase signal for the duration of the pulses of said preamble and by comparing the sum obtained with a threshold. The method may include a step for time synchronization by correlation of the complex phase signal with a reference sequence formed by one or more known bits before the decoding of the data. The method applies notably to the decoding of interrogation messages borne by low-power signals.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: May 5, 2015
    Assignee: Thales
    Inventors: Dominique Robin, Laurent Belmon, Claude Provost
  • Patent number: 9024812
    Abstract: Systems and methods for providing antenna calibration can be used in a variety of applications. A method of calibrating an antenna array for use in a traffic advisory system or traffic alert and collision avoidance system provide a mechanism that renders complex combining circuitry unnecessary in the array. A method can include receiving an unsolicited reply that contains absolute position information of an intruder aircraft. The method can also include determining a bearing of a signal encoding the reply based on a phase relationship of the signals from an antenna array not configured to operate with an internal self-test phase calibration mechanism. The method can further include comparing the bearing based on the phase relationship with a bearing calculated by a comparison of the absolute positions of a host aircraft and the intruder aircraft. The method can additionally include calibrating the antenna array based on the result of the comparison.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 5, 2015
    Assignee: Aviation Communication & Surveillance Systems LLC
    Inventor: Mark D. Smith
  • Patent number: 9013347
    Abstract: An embodiment of the present invention relates to a radar apparatus, wherein a distance to a target and a velocity of the target are measured by transmitting a digitally modulated transmitting signal using a digital code and receiving and demodulating an echo signal returned due to reflection of the transmitting signal from the target.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 21, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Pil Jae Park, Cheon Soo Kim, Hyun Kyu Yu, Min Park, Ik Soo Eo
  • Patent number: 9007215
    Abstract: In the embodiments described herein, a RFID enabled license plate is constructed by using the license plate, or a retro-reflective layer formed thereon as part of the resonator configured to transmit signals generated by and RFID chip integrated with the license plate. Such an RFID enabled license plate can include a metal license plate with a slot formed in the metal license plate, and a RFID tag module positioned in the slot. The RFID tag module can include a chip and a loop, and the loop can be coupled with the metal license plate, e.g., via inductive or conductive coupling. In this manner, the metal license plate can be configured to act as a resonator providing increased performance.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Neology, Inc.
    Inventors: Jeffrey Zhu, Chih-chuan Yen, Jason Liu, Joe Mullis