Patents Examined by Dao Phan
  • Patent number: 9829558
    Abstract: Technology for determining a geographical location of a ground receiver is disclosed. A plurality of radio frequency (RF) signals from a plurality of RF signal carriers may be received at the ground receiver. The plurality of RF signal carriers may include satellites operated by a foreign entity or non-global positioning system (non-GPS) satellites. The ground receiver may measure a Doppler shift associated with each of the plurality of RF signals. The geographical location of the ground receiver may be determined in X, Y and Z coordinates based in part on the Doppler shift associated with each of the plurality of RF signals.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: November 28, 2017
    Assignee: Raytheon Company
    Inventors: Ian S. Robinson, Andrew M. Hautzik, Brandon Crow
  • Patent number: 9829574
    Abstract: Systems and methods for performing distance and velocity measurements, such as by using carrier signals, are disclosed. A measurement system device may include a first antenna configured to receive a first signal from a transmitting device, the first signal having a carrier frequency, and a second antenna configured to receive the first signal from the transmitting device. The measurement system device may also include a processor configured to determine a first differential distance between the first antenna and the second antenna from the transmitting device and to determine a rate of change of the first differential distance. The processor may also be configured to estimate a geometry of the measurement system device relative to the transmitting device using the rate of change of the first differential distance.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 28, 2017
    Assignee: ENSCO, INC.
    Inventors: David W. A. Taylor, Jr., Bradley David Farnsworth, Edward Joseph Kreinar
  • Patent number: 9832749
    Abstract: An embodiment of the invention provides a method of determining a location of a mobile target that processes locations for the target provided by a wireless location technology tracker system to determine moving averages of velocity of the target, determines if the locations are outliers responsive to the moving averages, discards locations that are determined to be outliers, and uses locations determined not to be outliers as locations for the target.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: November 28, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Benny Schlesinger, Vadim Kuper
  • Patent number: 9829560
    Abstract: Some embodiments use scanning devices to characterize radio signals received at a number of locations within a geographical area of interest. The signal characteristics along with the location information associated with the characteristics are stored in a centralized reference database. A mobile device characterizes signals it receives at a certain location and compares the characteristics with the signal characteristics stored in the reference database to obtain accurate location information of the certain location.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 28, 2017
    Assignee: GOLBA LLC
    Inventor: Mehran Moshfeghi
  • Patent number: 9810765
    Abstract: A femtocell calibration solution is provided that uses the known location of the femtocell to calibrate timing based locating systems. The calculated time differences of different signals sent between macrocells and a mobile device can be used to solve for a reference time difference that accounts for the timing differences of the unsynchronized macrocells. The reference time difference can then be used to solve for the location of another mobile device if the calculated time differences between that mobile device and the macrocells are known. The solution can include taking many measurements of the calculated time difference at the first mobile device in order to average them to get a more accurate reference time difference. The solution can further include ceasing measurements at the first mobile device when the mobile device is no longer within range of the femtocell.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: November 7, 2017
    Assignee: AT&T MOBILITY II LLC
    Inventors: Jeremy Fix, Brandon Bowers Hilliard, Sheldon Meredith
  • Patent number: 9813129
    Abstract: An apparatus substantially updates all the phase shifter values of a phased array antenna by using “global write” to update these parameters to all phased-array transformation circuits simultaneously via a serial bus. Antenna elements, each controlled by a phased-array transformation circuit, are individually configured to transform phase and gain according to a register array. The register array has a local register group and a central register group, the local registers physically placed close in proximity to RF chains which each correspond to an element of array antenna, whereby each set of local registers control an individual antenna element and a central register controlling overall beam steering function. The apparatus is configured to efficiently elaborate phase shift weights into a submodule of a phase array antenna system with low noise and bandwidth.
    Type: Grant
    Filed: December 15, 2013
    Date of Patent: November 7, 2017
    Assignee: TUBIS TECHNOLOGY
    Inventors: James Wang, Chak Chie
  • Patent number: 9806397
    Abstract: Embodiments disclosed herein relate to a communication system. Particularly disclosed are systems and methods for locating and tracking radio frequency signals and for automatically positioning an antenna to receive a desired radio frequency signal.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: October 31, 2017
    Assignee: Troll Systems Corporation
    Inventors: Jeff Hopkins, Julian Scott
  • Patent number: 9804266
    Abstract: A device management system is comprised of a server-side proxy component and at least one back-end computer. The server-side proxy component is configured to receive ephemeris and almanac data from a source and information from at least one client describing the geographic location of the client. The server-side proxy component is configured to send the ephemeris and almanac data and the information from the client to a back-end computer. Responsive to receiving this data and information, the computer compiles it into GPS data relevant to the location of the client.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: October 31, 2017
    Assignee: Honeywell International Inc.
    Inventor: James Timothy Sauerwein, Jr.
  • Patent number: 9806428
    Abstract: Various embodiments of a communication system operative to form, direct, and narrow communication beams using an array of electromagnetic radiators and a beam-narrowing architecture. A beam-width of an electromagnetic beam is narrowed, thereby increasing the concentration of electromagnetic energy in the beam and achieving a significant antenna gain. In various embodiments, the direction of an electromagnetic beam may be altered to improve communication between a transmitter and a receiver. In various embodiments, the system is a millimeter-wave system with a millimeter-wave array and millimeter-wave beams.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: October 31, 2017
    Assignee: Siklu Communication Ltd.
    Inventors: Ovadia Haluba, Naftali Chayat, Yigal Leiba, Itzik Ben Bassat, Boris Maysel
  • Patent number: 9804255
    Abstract: A position estimation method for indoor positioning includes filtering an initial position estimate that includes a corresponding covariance that reflects the quality of the geometry of the reference points and a previous initial position estimate that includes a corresponding covariance that reflects the quality of the geometry of the reference points by a Kalman filter to generate an updated previous position estimate, analyzing the updated previous position estimate to determine if the value is outside of a range, and constraining the updated previous position estimate based on the value being outside of the range.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: October 31, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Mohamed Farouk Mansour
  • Patent number: 9798009
    Abstract: A method and an apparatus for acquiring a signal of a global navigation satellite system (GNSS) are provided. The method includes: performing a first satellite signal acquiring operation based on an initially set Doppler frequency search start value and an initially set Doppler frequency search interval value; and changing the initially set Doppler frequency search start value and performing a second satellite signal acquiring operation when a satellite signal is not found through the first satellite signal acquiring operation.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: October 24, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jeong-sang Lee
  • Patent number: 9793979
    Abstract: A method for reducing expected switchovers in antennas tracking at least one satellite. The method predicts an operation of a predetermined number of subsets of antennas during a simulated time interval. The subsets are derived from at least three antennas. Each of the at least three antennas has a field of view and is operative to selectively receive signals from and selectively transmit signals to a satellite in the respective field of view. The method determines, based on the predicted operation, an expected number of switchovers for each of the subsets during the simulated time interval. The method selects a selected subset from the subsets for communicating with the satellite. The selection of the selected subset is based on the expected number of switchovers.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: October 17, 2017
    Assignee: ORIBT COMMUNICATION SYSTEMS LTD.
    Inventors: Azriel Yakubovitch, Peter Bronshtein, Stav Gizunterman
  • Patent number: 9791574
    Abstract: Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving a medium Earth orbit (MEO) satellite signal and/or a LEO signal in a receiver of the communication device. The MEO or LEO signal may be down-converted, and a position of the communication device may be calculated utilizing the down-converted signal. The signal may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signal may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signal may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: October 17, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar, Anand Anandakumar
  • Patent number: 9784845
    Abstract: A method and apparatus for processing navigational signals with reduced bandwidth by receiving a combination of two navigational signals, reducing the frequency of the combined two navigational signals to an intermediate frequency (IF); converting the IF signal to digital signals; translating the frequency of the IF signal to near baseband; filtering the near baseband signal; reducing the sample rate of the filtered near-baseband signal by a factor; translating a selection of the reduced, filtered, near-baseband signal to a single sidelobe; storing the single sidelobe in memory; and processing the single sidelobe for navigational purposes.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: October 10, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Gary Lennen
  • Patent number: 9787391
    Abstract: Vessel communications systems and methods are described. According to one aspect, a vessel communications method includes receiving a first communication including first positional data which indicates a location of a first vessel, receiving a second communication including second positional data which indicates a location of a second vessel, using the first and second positional data, identifying a wireless communications range of the first vessel overlapping with a wireless communications range of the second vessel at a moment in time, as a result of the identifying, controlling only one of the first and second vessels to output wireless communications which include both of the first and second positional data.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: October 10, 2017
    Assignee: Boatracs Inc.
    Inventors: Alan Yu, J. Joel Faul
  • Patent number: 9787000
    Abstract: A control system connected to a plurality of array antenna performs beamforming. The control system comprises a beam radiation controller for requesting a predetermined first antenna group to radiate beams and requesting a second antenna group including the first antenna group to radiate beams to an optimized sector, a beam receiver for receiving response beams from the first antenna group and the second antenna group, and a sector selector for setting up an optimized sector based on the received beams for the first antenna group, and transmitting information on the optimized sector to the beam radiation controller in order to control the second antenna group to radiate beams to the optimized sector.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: October 10, 2017
    Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Ki Jin Kim, Kwang Ho Ahn, Sanghoon Park, Jong-Won Yu, Hyun Sung Tae
  • Patent number: 9778371
    Abstract: A system and method for determining transmission delay in a communications system. In some embodiments, satellite positioning information having System Frame Number (SFN) information may be received for a mobile device and observed time difference of arrival (OTDOA) measurements may be received for a mobile device. A location of the mobile device may be determined as a function of the received satellite positioning information. A Global Positioning System (GPS) time estimate may be determined as a function of the determined location of the mobile device. Transmission delay between a node serving the mobile device and an antenna serving the mobile device may be determined as a function of the received OTDOA measurements and determined GPS time estimate.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 3, 2017
    Assignee: CommScope Technologies LLC
    Inventors: Ariful Hannan, Khalid W. Al-Mufti, Tariqul Islam
  • Patent number: 9780448
    Abstract: The present invention is an apparatus for shifting the phase of an radiofrequency signal. The device has an input line and an output line. An input switch is connected to the input line. The input switch is has several input throws. An output switch is connected to the output line. The output switch has several output throws which correspond to the input throws. The apparatus also has several phase shift lines. Each phase shift line has a true path length that is different from the true path lengths of the other phase shift lines.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: October 3, 2017
    Assignee: The United States of America as represented by Secretary of the Navy
    Inventors: Christopher J. Meagher, Randall B. Olsen
  • Patent number: 9766322
    Abstract: A geolocation system includes an originator device configured to transmit a first wireless signal to a transponder device. The transponder device is configured to transmit a second wireless signal to the originator device. The system includes at least one observer device configured to receive the first wireless signal from the originator device and receive the second wireless signal from the transponder device. The system also includes a first processor configured to calculate a transactional difference range at the at least one observer device based on the first wireless signal received at the observer device and the second wireless signal received at the observer device. A corrected transactional difference range value may be calculated by subtracting a time-of-flight of the first wireless signal from the originator device to the transponder device from the transactional difference range. A method of performing geolocation using a transactional difference range is also disclosed.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 19, 2017
    Assignee: ENSCO, INC.
    Inventors: David W. A. Taylor, Jr., Bradley David Farnsworth, William Todd Faulkner
  • Patent number: 9766341
    Abstract: The system includes a reconfigurable GNSS antenna subsystem that dynamically reconfigures one or more antenna parameters to change one or more operating characteristics of an antenna based on environmental conditions and/or the presence of interfering signals to improve the quality of GNSS satellite signal reception. The system analyzes the received signals to determine if the GNSS satellite signals are sufficiently above received noise, if interfering signals are present, and/or if multipath signals are adversely impacting position calculations. Based on the analysis, the reconfigurable antenna subsystem selectively and dynamically reconfigures one or more parameters to change one or more operating characteristics of the antenna. As the conditions change, the reconfigurable antenna subsystem may dynamically reconfigure one or more of the antenna parameters accordingly.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: September 19, 2017
    Assignee: NovAtel Inc.
    Inventor: Ahmad Chamseddine