Distance Patents (Class 342/458)
  • Patent number: 10311595
    Abstract: An image processing device includes an acquisition unit configured to acquire an image data and a depth data correspond to the image data; a calculating unit configured to calculate a position and attitude change for each depth from the image data and the depth data; and a determining unit configured to determine a position and attitude change of a whole image by a position and attitude change data calculated by the calculating unit based on a statistic of the position and attitude change calculated by the calculating unit.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: June 4, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuta Kawamura
  • Patent number: 10302763
    Abstract: Disclosed are an electronic device and method for detecting the proximity of an object. In an embodiment, the electronic device includes a communication module, a sound emitter, a sound receiver, and a processor. The processor receives at least one part of a voice signal from a calling party through the communication module, and determines whether there is a voice idle time in the at least one part of the voice signal. When the voice idle time is present in the at least one part of the voice signal, the processor outputs a sound wave in an inaudible frequency band through the sound emitter during the voice idle time. Then the processor receives, through the sound receiver, sound wave in the inaudible frequency band reflected from an object. Next, the processor may detect whether the object is proximate to the electronic device using the reflected sound wave in the inaudible frequency band.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 28, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seunggoo Kang, Jaehwan Lee, Yongjun Park, Gihoon Lee, Dongil Son
  • Patent number: 10215836
    Abstract: A geolocation system on a platform, for example, an airplane, to identify a location of a signal emitting site includes an inertial navigation system and an array of signal detectors. A first subset of the detectors is on a flexing portion of the platform and a second subset of detectors is on a rigid portion of the platform. An inertial measurement unit is disposed adjacent to each of the detectors on the flexing portion. A locator module is configured to: calculate a respective velocity and a respective position of each one of the detectors positioned on the flexing portion as a function of respective inertial measurement data; and determine a position of the emitter as a function of the calculated velocity, calculated position, inertial navigation data, the detected signal data and data defining a flexure relationship between the flexing and rigid portions of the platform.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: February 26, 2019
    Assignee: Raytheon Company
    Inventors: Albert Yoon, Phuoc T. Ho, Stanley I. Tsunoda
  • Patent number: 10111044
    Abstract: Localization systems and methods for transmitting timestampable localization signals from anchors according to one or more transmission schedules. The transmission schedules may be generated and updated to achieve desired positioning performance. For example, one or more anchors may transmit localization signals at a different rate than other anchors, the anchor transmission order can be changed, and the signals can partially overlap. In addition, different transmission parameters may be used to transmit two localization signals at the same time without interference. A self-localizing apparatus is able to receive the localization signals and determine its position. The self-localizing apparatus may have a configurable receiver that can select to receive one of multiple available localization signals. The self-localizing apparatuses may have a pair of receivers able to receive two localization signals at the same time.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: October 23, 2018
    Assignee: Verity Studios AG
    Inventors: Luca Gherardi, Raffaello D'Andrea, Markus Hehn, Markus Waibel
  • Patent number: 10104508
    Abstract: Systems and methods for determining locations of wireless sensor nodes in a tree network architecture having mesh-based features are disclosed herein. In one embodiment, a system includes a hub having one or more processing units and RF circuitry for transmitting and receiving communications with sensor nodes to enable bi-directional communications. The one or more processing units of the hub execute instructions to configure the system with a tree architecture for communications between the hub and the sensor nodes, and to configure the system temporarily with a mesh-based architecture for determining location information for the sensor nodes.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: October 16, 2018
    Assignee: LOCIX INC.
    Inventors: Lingkai Kong, Teymur Bakhishev, Tommi Ylamurto, Vivek Subramanian, Manu Seth
  • Patent number: 10088319
    Abstract: Method for determining states of a system by means of an estimation filter, in which first state values are determined by calculating a mean value of a probability distribution for the states, in which a probability for deviation for the case that the first state values deviate from the actual states of the system is calculated, and in which the states of the system are measured as state data. In the method the first state values are corrected by means of the state data then, if the probability for deviation is larger than a threshold.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 2, 2018
    Assignee: Northrop Grumman LITEF GmbH
    Inventors: Uwe Herberth, Tim Martin
  • Patent number: 10082583
    Abstract: A navigation module for providing a real-time INS/GNSS navigation solution for a moving object comprising a receiver for receiving absolute navigational information from an external source and an assembly of self-container sensors for generating navigational information. The module also contains a processor coupled to receive the output information from the receiver and sensor assembly, and integrate the output information in real-time to produce an overall navigation solution. The overall navigation solution will contain a main navigation solution task, and at least one other task, where the other task is used to enhance the overall navigation solution.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: September 25, 2018
    Assignee: InvenSense, Inc.
    Inventors: Jacques Georgy, Christopher Goodall, Mohamed Atia, Walid Abdelfatah, Zhi Shen, Aboelmagd Noureldin, Husain Syed
  • Patent number: 10060320
    Abstract: A system is provided for determining a parameter indicative of an amount of a reducing agent in a selective catalytic reduction (SCR) module of a vehicle, the system including: the SCR module having at least one passage for transporting a stream of gas and an SCR catalyst for converting NOx emissions, and having an extension in an axial direction, at least one first antenna unit configured to transmit and receive a microwave signal. Moreover, the first antenna unit is arranged outside the SCR module and configured to transmit microwave signals towards the SCR catalyst and to receive a microwave signal reflected within the SCR module.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 28, 2018
    Assignee: Volvo Truck Corporation
    Inventors: Fredrik Blomgren, Johan Dahl
  • Patent number: 10036636
    Abstract: The present disclosure relates to a position determining unit (800) for a land or sea based object and a method for determining a position. The position determining unit comprises or has access to a three dimensional map (802) comprising three dimensional geo-referenced position data. The position determining unit comprises further map part selector means (803) for selecting a part of the three dimensional map (802) so as to obtain a geo-referenced position associated to the selected part, at least one measurement instrument (805) arranged to obtain bearing and/or distance information related to the land or sea based object, and a computing and control unit (804) arranged to relate each obtained bearing and/or distance information to a corresponding obtained geo-referenced position and to determine a geographical position of the land or sea based object based on the bearing and/or distance information and the corresponding obtained geo-referenced positions.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: July 31, 2018
    Assignee: Vricon Systems Aktiebolag
    Inventors: Leif Haglund, Johan Bejeryd, Bard Frostad
  • Patent number: 9941950
    Abstract: A communication system uses multiple communications links, preferably links that use different communications media. The multiple communications links may include a high latency/high bandwidth link using a fiber-optic cable configured to carry large volumes of data but having a high latency. The communications links may also include a low latency/low bandwidth link implemented using skywave propagation of radio waves and configured to carry smaller volumes of data with a lower latency across a substantial portion of the earth's surface. The two communications links may be used together to coordinate various activities such as the buying and selling of financial instruments.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: April 10, 2018
    Assignee: Skywave Networks LLC
    Inventor: Kevin Babich
  • Patent number: 9906245
    Abstract: A communications system having two terminals, each including two antennas, the communications system using spatial multiplexing. One antenna of a first terminal transmits a tracking tone along with a data signal. Two antennas in a second terminal receive the tracking tone. The signals from the two antennas are processed by a feed circuit. The feed circuit includes a variable delay circuit and a combiner that forms, at a first difference output, a linear combination, of a signal from the first antenna and a signal from the second antenna, in which the tracking tone is canceled. The variable delay circuit is actively adjusted to maintain this cancellation.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: February 27, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: Kenneth W. Brown, Michael J. Sotelo, April R. Sanders
  • Patent number: 9885774
    Abstract: An approach to localization in an indoor environment makes use of a multiple antenna receiver (e.g., in a smartphone, tablet, camera) and knowledge of locations of one or more radio transmitters, which may be part of a data communication infrastructure providing data communication services to devices in the environment. Successive measurements of transmissions from the transmitters are recorded at the receiver as the device is translated and rotated in the environment. Rotation related measurements are also made at the device. The radio frequency and rotation related measurements are used to infer the location and orientation, together referred to as the pose, of the device. Phase synchronization of the transmitters and the receiver are not required. In general, accuracy of the pose estimate far exceeds that achievable using radio frequency measurements without taking into consideration motion of the device, and far exceeds that achievable using the inertial measurements alone.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: February 6, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Swarun Suresh Kumar, Stephanie Gil, Dina Katabi, Daniela Rus
  • Patent number: 9871736
    Abstract: A system and method for information delivery with multiple point transmission are provided. A method for detecting lost packets is provided. The method includes initiating a timer for a received packet at a receiving transmission point, where the timer is set according to a time value associated with the received packet. The method also includes determining that a delivery of the received packet has failed according to the timer elapsing, and transmitting a lost packet report to a primary transmission point that distributed the received packet to the receiving transmission point.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 16, 2018
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hao Bi, Yishen Sun
  • Patent number: 9846220
    Abstract: Systems and methods for determining locations of wireless sensor nodes in a network architecture having mesh-based features are disclosed herein. In one example, a computer-implemented method for localization of nodes in a wireless network includes causing, with processing logic of a hub, the wireless network having nodes to be configured as a first network architecture for a first time period for localization. The method further includes determining, with the processing logic of the hub, localization of at least two nodes using at least one of frequency channel overlapping communications, frequency channel stepping communications, multi-channel wide band communications, and ultra-wide band communications for at least one of time of flight and signal strength techniques. The method further includes causing the wireless network to be configured in a second network architecture having narrow-band communications upon completion of localization.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 19, 2017
    Assignee: Locix, Inc.
    Inventors: Lingkai Kong, Teymur Bakhishev, Tommi Ylamurto, Vivek Subramanian, Manu Seth
  • Patent number: 9791540
    Abstract: Systems and methods for identifying device location are provided. The method can include providing, by a mobile computing device, at least a first ultrasonic signal to a first and a second self-organizing beacon device. The method can include receiving, by the mobile computing device, a first radio frequency signal including the location of the first beacon device and a second radio frequency signal including the location of the second beacon device. The method can further include determining a first time-of-flight associated with the first beacon device and a second time-of-flight associated with the second beacon device. The method can include determining a location of the mobile computing device based at least in part on the first time-of-flight, the second time-of-flight, the location of the first beacon device, and the location of the second beacon device.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: October 17, 2017
    Assignee: Google Inc.
    Inventors: Roy Want, Ravi Jain
  • Patent number: 9763054
    Abstract: Systems and methods for determining locations of wireless sensor nodes in a tree network architecture having mesh-based features are disclosed herein. In one embodiment, a system includes a hub having one or more processing units and RF circuitry for transmitting and receiving communications with sensor nodes to enable bi-directional communications. The one or more processing units of the hub execute instructions to configure the system with a tree architecture for communications between the hub and the sensor nodes, to detect a change in range or position of at least one sensor node, and to configure the system temporarily with a mesh-based architecture for determining location information for the sensor nodes based on detecting a change in range or position.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: September 12, 2017
    Assignee: LOCIX Inc.
    Inventors: Lingkai Kong, Teymur Bakhishev, Tommi Ylamurto, Vivek Subramanian, Manu Seth
  • Patent number: 9730079
    Abstract: Disclosed are a joint positioning method and device, and the method includes: a positioning module is enabled after a terminal receives a positioning request; the positioning module determines a primary positioning submodule implementing a primary positioning mode and an auxiliary positioning submodule implementing an auxiliary positioning mode according to a communication scenario or a predetermined setting; implementing respectively positioning by the primary positioning submodule and by the auxiliary positioning submodule, and outputting respective positioning results to a comparison module of the terminal; the comparison module compares the positioning results, selects an optimal positioning result and sends the optimal positioning result and/or positioning results other than the optimal positioning result to the primary positioning submodule; and the primary positioning submodule reports the optimal positioning result and/or positioning results other than the optimal positioning result to a server or the
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: August 8, 2017
    Assignee: ZTE Corporation
    Inventor: Tao Xue
  • Patent number: 9713119
    Abstract: A position estimation apparatus acquires, for base devices, the number of hops from a target sensor node to a base device. The position estimation apparatus calculates, for each base device, a distribution of estimated distances corresponding to the total hops, based on the number of hops and a distribution of estimated distances stored in a storage device. The position estimation apparatus calculates, for each base device, a distribution of estimated positions within a given region, based on the distribution of estimated distances, information concerning a range of the given region, and information concerning a position of the base device. The position estimation apparatus calculates an index that indicates a probability of a position of the target sensor node within the given region, based on the sum of distributions of estimated positions concerning the base stations.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: July 18, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yuta Teranishi, Koichiro Yamashita, Takahisa Suzuki, Hiromasa Yamauchi, Koji Kurihara, Toshiya Otomo
  • Patent number: 9681408
    Abstract: A method and apparatus for determining a drift between a local clock of a movable device and a reference clock that is used by one or more reference devices. The local clock may be calibrated at a calibration location and then the movable device may be moved to an operating location that is different from the calibration location. The drift is determined by observing one or more signals transmitted by the respective one or more reference devices, when the device is at the calibration location and when it is at the operating location. These observations are used together with a model of the signals to determine the drift.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: June 13, 2017
    Assignee: U-BLOX AG
    Inventor: Christopher Brian Marshall
  • Patent number: 9651655
    Abstract: Method and system for obtaining positioning of nodes in a wireless local access network (WLAN), comprise, by an initiator node of the WLAN, calculating a compensated time-of-flight (ToF) of messages exchanged between the initiator node and a target node and calculating a distance of the target node relative to the initiator node using the compensated ToF, thereby obtaining relative positioning between the initiator and target nodes. The compensated ToF is calculated using OFDM symbol slope inputs measured at the initiator and target nodes. Each node is associated with an enhanced WLAN unit adapted to measure and calculate the compensated ToF.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: May 16, 2017
    Assignee: Autotalks Ltd.
    Inventors: Ariel Feldman, Alex Kobzancev, Leonid Menis, Onn Haran
  • Patent number: 9484980
    Abstract: Methods are provided for implementing a timing synchronization or a backup timing synchronization in a telecommunication network. Timing pulses are received from a celestial body such as a star, pulsar, or quasar. The timing pulses are periodic and repetitive and act as a primary reference source in place of GPS timing or an atomic clock. The telecommunication network is synchronized from the timing pulses.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: November 1, 2016
    Assignee: Sprint Communications Company L.P.
    Inventor: Eugene S. Mitchell, Jr.
  • Patent number: 9479905
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives, from a second UE, a first signal including a first expression code associated with the second UE, and determines at least a second expression code using the first expression code, the at least a second expression code associated with the second UE.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: October 25, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arthur Stephens, Michaela Vanderveen, Sajith Balraj
  • Patent number: 9479952
    Abstract: A first node of a radio network initiates a mode for finding the range to a second node. The first node transmits to the second node, with the address of the second node, a range finding command, which switches the second node into the range finding mode and controls a sequence. The first node transmits in a transmission time window a first signal, which is received by the second node in an associated reception time window, a first phase value of the first signal being measured. The second node transmits in a transmission time window a second signal, which is received by the first node in an associated reception time window, a second phase value of the second signal being measured. The first frequency is changed by a frequency difference and the second frequency is changed by the frequency difference in a subsequent time window of the sequence.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: October 25, 2016
    Assignee: Atmel Corporation
    Inventors: Eric Sachse, Tilo Ferchland, Wolfram Kluge
  • Patent number: 9395407
    Abstract: The enhanced dynamic range RF pulse measurement system accepts an RF source for spectral analysis. The system includes an RF splitter accepting the RF source under analysis as input. The split output connects to identical precision timing insertion units (TIU) 1 and 2, each time tagging its respective RF signal stream. TIU 1 feeds a first real-time spectrum analyzer (RSA 1) set for strong signals at an exemplary ?3.00 dBm reference level. TIU 2 feeds a second real-time spectrum analyzer (RSA 2) set for weak signals at an exemplary ?15.00 dBm reference level. Outputs of RSA 1 and RSA 2 are then fed to a multi-channel recorder which records the respective time tagged RF signal streams. For each signal stream real-time PDW processing is performed. Output of the recorder feeds a workstation that for any given time tag selects and processes the channel having the highest quality signal.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: July 19, 2016
    Assignee: X-COM SYSTEMS, LLC
    Inventors: David E. Erisman, Troy D. Calderwood, Marty R. Mosier
  • Patent number: 9384648
    Abstract: A marine emergency position indicating system that can communicate wirelessly between beacon and search engine is provided. When someone carrying the beacon falls into the water, power supply of the beacon opens through drowning automatic switch or manual switch, therefore the beacon can emit wireless SOS signals out. Rescue boat or aircraft installed with search engine can search and receive SOS signals sent from beacons over a 5-kilometer radius along the way to accidental site. The search engine can distinguish the beacons around this area and determine the direction and approximate distance between drowning persons carrying beacons and the search engine through wireless communication technology and wireless positioning technology to help rescuers implement fixed-point rescue. Therefore, the marine emergency position indicating system can overcome the bad weather impact on marine rescue, speed up the rescue process and improve the success possibilities of fixed-point rescue.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: July 5, 2016
    Assignee: SHANGHAI RADIO EQUIPMENT INSTITUTE
    Inventors: Xiaoshang Yan, Yi Liang, Peng Yan
  • Patent number: 9343809
    Abstract: An RF system comprising of outputs to an electronically scanning antenna for radiating electromagnetic energy; at least one waveform generator; two multiphase phase-locked loops integrated with the waveform generator, the phase locked loops operating to provide multiple shifted phases to a waveform. Optionally, the two multiphase phase-locked loops may each be divided down by a bank of frequency dividers to further increase the number of phase shifts. The phases generated from each multiphase phase-locked loops are selected with multiplexers then mixed together. These upper or lower sidebands are then mixed with the up converted waveform which results in a phase shift for the waveform associated with each antenna element.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: May 17, 2016
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Fa Foster Dai, Geoffrey Goldman
  • Patent number: 9331756
    Abstract: A multiple-user multiple input-multiple output wireless communication system uses a set of multiple subcarriers arranged in plural subsets or resource blocks. Precoding of signals transmitted from a base station to user terminals involves acquiring channel state information on the connection channel between the base station and user terminals in the plurality. Channel quality indicators are detected with user terminals for respective subsets of resource blocks to produce user/resource block pairs having associated channel quality indicators.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: May 3, 2016
    Assignee: TELECOM ITALIA S.p.A.
    Inventor: Paolo Priotti
  • Patent number: 9316717
    Abstract: Methods and systems for determining and utilizing spatial correlative information relating to two or more devices to determine device positioning are described. Using audio signals emitted from stereo speakers, for example, associated with a first device and a microphone associated with the second device, the distance and angle between the two devices and as their relative positions can be determined. No other sensors or specialized accessories are needed on either device to calculate the distance and angles. The devices need only be loaded with the appropriate software which, when executed, is able to carry out steps of the present invention. The usefulness of one or both of the devices may be enhanced by knowing the distance and angle data between the devices. For example, one device may be a TV having stereo speakers and the other device may be a handheld device, such as a smartphone, having a microphone.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: April 19, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Daniel P. Gicklhorn, Dang Van Tran
  • Patent number: 9310489
    Abstract: The present invention provides a transmitter comprising: a plurality of antennas; and a radio transmitting part transmitting from each of the antennas a positional information signal containing the same positional information, the positional information being transmitted from the antennas through channels which are different between the antennas. The transmitter enables prevention of the positioning error and the positioning time from increasing by solving problems of null points and signal interferences, problems relating to a positional information transmitter disposed indoors, in a positioning system for acquiring a current position both indoors and outdoors.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: April 12, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Takamasa Kawaguchi, Tomoichi Ebata, Takayoshi Fujioka
  • Patent number: 9300418
    Abstract: A method and apparatus for electronically locating and tracking persons, animals, or objects in a predetermined work area utilizing a number of base stations associated with the work area, provided with stationary transmitting-/receiving devices and a number of transponders added to the persons, animals, or objects to be located, provided with transmitting and receiving means, wherein the base stations generate interrogation fields which can be received by the transponders, wherein with the base stations low-frequency magnetic fields with a unique frequency for each base station are generated in the predetermined work area, and wherein transponders are used, which are provided with means to measure the field strength associated with each separate received frequency at the location of the transponder and then to transmit this as a position signal via high-frequency transmitting means of the transponder to high-frequency receiving means provided in the base stations.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: March 29, 2016
    Assignee: N.V. NEDERLANDSCHE APPARATENFABRIEK NEDAP
    Inventors: Jeroen Martin Van Dijk, Derk Jan Roosenboom
  • Patent number: 9234956
    Abstract: A transmission beam control unit 8 changes a main beam direction of a radar transmission beam every predetermined number of transmission periods. A radar transmitting unit Tx transmits a radar transmission signal using the radar transmission beam of which the main beam direction has been changed. In a radar receiving unit Rx, an estimation range selection unit 22 selects an estimation range of the direction of arrival of a reflected wave signal by limiting the estimation range to the approximate transmission beam width on the basis of the transmission beam width of the radar transmission beam and the output from the transmission beam control unit 8. The direction-of-arrival estimation unit 23 estimates the direction of arrival of the reflected wave signal on the basis of phase information between a plurality of antennas according to the selected range.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: January 12, 2016
    Assignee: Panasonic Corporation
    Inventors: Takaaki Kishigami, Yoichi Nakagawa
  • Patent number: 9173380
    Abstract: An animal indicator apparatus that tracks the locations of an animal and alerts nearby persons when the animal approaches a boundary includes a location determining component operable to determine a current geographic location of the apparatus; memory for storing cartographic data representative of at least one boundary; an indicator and a processor. The processor triggers the indicator when the current geographic location of the apparatus is near the location of the boundary.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: November 3, 2015
    Assignee: Garmin Switzerland GmbH
    Inventors: Bradley C. Trenkle, Timmy R. Walker
  • Patent number: 9154351
    Abstract: Degree of hierarchical modulation can be varied as a function of satellite position, where such hierarchical modulation can be a combination of phase and amplitude shifts. As each satellite in a multiple satellite system moves towards a D-node or an A-node position, the offset angle of a phase-based hierarchical modulation scheme can be varied. Starting with the lowest satellite position in the sky an offset angle for overlay bits can progressively increase as the position of the satellite in the sky increases. At a satellite's highest point in the sky, the overlay offset angle can be at its maximum. The value of a varying overlay offset angle (for each satellite) can be embedded in an Overlay Identification Marker (OIM) in the broadcast. The receiver can then appropriately correct MRC weightings (weighting more heavily the (higher lying) satellite).
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: October 6, 2015
    Assignee: Sirius XM Radio Inc.
    Inventor: Carl Scarpa
  • Patent number: 9148752
    Abstract: Techniques are presented herein to coordinate ranging exchanges between base stations in order to enable any number of wireless devices in the vicinity of the base stations to obtain signals associated with ranging exchanges between base stations, time-of-departure report messages transmitted by the base stations to each other and time-of-arrival report messages transmitted by the base stations to each other, for use in computing the location of the wireless devices. Based on the multi-channel time-of-arrivals computed for the wireless device with respect to each base station, the multi-channel time-of-arrivals contained in the time-of-arrival report messages transmitted between base stations and the known locations of the base stations, a physical location is computed for the wireless device.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: September 29, 2015
    Assignee: Cisco Technology, Inc.
    Inventor: Brian D. Hart
  • Patent number: 9136938
    Abstract: A communication system uses multiple communications links, preferably links that use different communications media. The multiple communications links may include a high latency/high bandwidth link using a fiber-optic cable configured to carry large volumes of data but having a high latency. The communications links may also include a low latency/low bandwidth link implemented using skywave propagation of radio waves and configured to carry smaller volumes of data with a lower latency across a substantial portion of the earth's surface. The two communications links may be used together to coordinate various activities such as the buying and selling of financial instruments.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 15, 2015
    Assignee: Tesla Wireless Company LLC
    Inventor: Kevin Babich
  • Patent number: 9130633
    Abstract: There is provided a wireless communication device includes a transmitter configured to transmit a known signal in each of a plurality of first directions different from each other, a receiver configured to receive a plurality of first reflected waves, each of the plurality of first reflected waves being generated by the known signal transmitted in each of the plurality of first directions and to detect each of a plurality of first reception intensities, each of the plurality of first reception intensities being associated with each of the plurality of first reflected waves; and a controller configured to determine a transmission direction of a radio signal addressed to a first wireless terminal, based on the plurality of first reception intensities and to control the transmitter to transmit the radio signal in the transmission direction.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: September 8, 2015
    Assignee: FUJITSU LIMITED
    Inventor: Teppei Oyama
  • Patent number: 9086472
    Abstract: The RF system for preventing hunting accidents comprising RF interrogator mounted on the firearm or hunter's hat and RF transponder attached to hunter's hat, wherein directional pattern of antennas of the hat-mounted interrogator is directed along the line of view of the hunter so matching with sightline of hunter's rifle; and RF transponder, which, to cover directional pattern of 360 arc degrees in azimuth, contains a number of RF transceiver evenly attached to the hunter's hat in horizontal plane and connected to the single electronic unit. The system provides alert information about “friendly targets” that could be under fire, such as other hunters or persons equipped with said transponder; and if they are, the system develops alert signal: “Do not shoot”.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: July 21, 2015
    Inventors: Gennadii Ivtsenkov, Evgeny Berik
  • Patent number: 9075125
    Abstract: Disclosed are systems, methods and devices for computing an estimated location of a mobile device based, at least in part, on an observed difference of time of arrival of messages arriving at the mobile device. In particular implementations, such observed time arrival may comprise a difference between receipt at the mobile device a first message transmitted from a first transceiver device to a second transceiver device and receipt at the mobile device of a second message transmitted by the second transceiver device in response to the first message.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: July 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventor: Carlos H. Aldana
  • Patent number: 9057771
    Abstract: Wireless local area networks (WLANs) provide wireless communication between various wireless devices. Frames are acknowledged (ACKed) after a short and predefined MAC idle time. The MAC idle time varies with 1) the physical distance between wireless devices, caused by the delay of wireless signal propagation, and 2) the time to detect the ACK at the local wireless device, which varies with the signal strength of the incoming ACK. Embodiments present CAESAR (CArriEr Sense-bAsed Ranging), which combines time of flight (TOF) and signal-to-noise ratio (SNR) measurements to calculate the distance between two wireless devices. CAESAR measures the distance by estimating the MAC idle time in a data/ACK communication at a particular clock resolution and the ACK detection time on a per-frame basis. Performance measurements confirm the accuracy of the solution and show the capability to track the distance to WLAN smart phones at pedestrian speeds.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: June 16, 2015
    Assignee: Disney Enterprises, Inc.
    Inventors: Domenico Giustiniano, Stefan Mangold
  • Publication number: 20150145721
    Abstract: An electronic apparatus includes a selection unit, a storage unit and a processing unit. The selection unit and the storage unit are coupled to the processing unit. The selection unit selects a first reference point proximate to the electronic apparatus. The storage unit stores a plurality of second locations of a plurality of second reference points. The processing unit executes a single-point distance measurement between the electronic apparatus and a first location of the selected first reference point, provides the electronic apparatus auxiliary positioning information by selecting the second locations stored in the storage unit and generates a speculative location of the electronic apparatus by further computing the results of the single-point distance measurement and the auxiliary positioning information.
    Type: Application
    Filed: December 19, 2013
    Publication date: May 28, 2015
    Applicant: INSTITUTE FOR INFORMATION INDUSTRY
    Inventors: CHIH-HUNG LI, DZE-MIN JOU, CHIA-CHYANG CHANG
  • Patent number: 9020681
    Abstract: A method of displaying navigation limits for a planned travel route of a vehicle is presented here. The method calculates estimated navigation limits for the vehicle using an onboard subsystem of the vehicle, where the estimated navigation limits represent self-assessed navigation accuracy of the vehicle relative to the planned travel route. Contracted navigation limits are acquired for the vehicle, where the contracted navigation limits represent specified navigation accuracy of the vehicle, relative to the planned travel route, as mandated by a third party navigation controller. A navigation display is rendered on an onboard display element such that it includes graphical representations of the planned travel route, at least one of the estimated navigation limits, and at least one of the contracted navigation limits.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: April 28, 2015
    Assignee: Honeywell International Inc.
    Inventors: Petr Krupansky, Jiri Vasek, Pavel Kolcarek, Tomas Neuzil, John A. Wise
  • Patent number: 9013353
    Abstract: Systems and methods for correcting a location of a terminal are provided. In various aspects, a processor in a position correction apparatus may associate a reference position with the terminal, and determine a range for the terminal based on the reference position. The processor may also associate a second position with the terminal, and determine if the second position associated with the terminal is outside the determined range for the terminal based on the reference position. Upon a determination that indicates that the second position is outside the determined range, the processor may correct the second position to a corrected position associated with the terminal.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: April 21, 2015
    Assignee: Sony Corporation
    Inventors: Masanori Katsu, Masatomo Kurata, Takashi Ogata, Yasutaka Fukumoto, Tomoharu Ohsumi
  • Patent number: 9007264
    Abstract: A method for tracking the object includes providing a motion detector on a first radio frequency device and detecting the motion of the first radio frequency device, transmitting radio frequency location signals from the first radio frequency device to a second radio frequency device with time intervals between the transmissions, decreasing the time intervals between the transmissions from the first radio frequency device to the second radio frequency device in response to the detection of motion by the motion detector, and periodically determining a separation distance between the first radio frequency device and the second radio frequency device based on the radio frequency location signals transmitted from the first radio frequency device to the second radio frequency device.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: April 14, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Jim Riley, Steve Markham, Michael Marriam
  • Patent number: 9002675
    Abstract: A method and system for locating the position of a source that emits a rotating magnetic field. Three or more receivers are deployed or positioned in known position relative to each other, which may be along a common axis in some cases. Phase differences between the magnetic fields measured by the receivers are detected. The phase shifts are used to determine the location of the source. With three receivers, a range and bearing angle relative to a middle receiver may be determined. With five or more receivers, a range and two bearing angles may be determined, thereby providing a three-dimensional position.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: April 7, 2015
    Assignee: Ultra Electronics Maritime Systems Inc.
    Inventors: Graham Mark McIntyre, Sebastien Bourdage, Olivier Beslin, Jean Pierre Quirion
  • Patent number: 8988285
    Abstract: Techniques and methodologies are disclosed for minimizing inaccuracies in distance measurements and location determinations for autonomous vehicles or targets ranging to subsets of beacons. Such techniques and methodologies can be used to better control (e.g., navigate) an autonomous vehicle in an area and/or along a pathway, or trajectory.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 24, 2015
    Assignee: Nav-Track, Inc.
    Inventors: Edzko Smid, Thomas Stiglich
  • Publication number: 20150070209
    Abstract: A moving signal receiver determines a plurality of signal receiver positions and corresponding ranges to the moving signal receiver from a first terrestrial transmitter by, while positioned at each of a plurality of distinct positions, determining a position of the moving signal receiver based on signals received from one or more respective sources distinct from the first terrestrial transmitter; and while determining the position of the moving signal receiver, concurrently obtaining a respective range to the moving signal receiver from the first terrestrial transmitter. The moving signal receiver computes a location of the first terrestrial transmitter based on the plurality of signal receiver positions and corresponding ranges.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 12, 2015
    Applicant: Deere & Company
    Inventors: Richard G. Keegan, Jerry E. Knight
  • Publication number: 20150070218
    Abstract: A method for locating wireless devices within a local region, comprising: determining respective global locations of two or more of the wireless devices; determining whether the wireless devices are within the local region by calculating respective distances between the global locations; determining respective ranges between the wireless devices within the local region; and, determining respective relative locations of the wireless devices within the local region by triangulation using the ranges.
    Type: Application
    Filed: February 21, 2014
    Publication date: March 12, 2015
    Applicant: TAG-COMM INC.
    Inventor: TAJINDER MANKU
  • Publication number: 20150029058
    Abstract: A method of obtaining an absolute time reference for a high-frequency (HF) sounding signal includes transmitting a reference signal at a first location and transmitting a sounding signal in close proximity to the transmitting of the reference signal at the first location. The method additionally includes receiving the reference signal at a second location and receiving the sounding signal at the second location. The method further includes determining a relative delay at the second location of the sounding signal in relation to the reference signal. The method also includes determining a propagation mode based upon the relative delay. The method additionally includes determining an absolute time reference based upon the propagation mode being observed. Additional methods and associated systems for implementing the methods are also provided.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 29, 2015
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventor: Frank C. Robey
  • Publication number: 20150022400
    Abstract: Techniques and methodologies are disclosed for minimizing inaccuracies in distance measurements and location determinations for autonomous vehicles or targets ranging to subsets of beacons. Such techniques and methodologies can be used to better control (e.g., navigate) an autonomous vehicle in an area and/or along a pathway, or trajectory.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 22, 2015
    Applicant: Nav-Track, Inc.
    Inventor: Nav-Track, Inc.
  • Patent number: 8938253
    Abstract: An application executed within a mobile station to be triggered only by a network element, such as a mobile positioning center (MPC) or a Mobile Center (MC). The network element is coupled to a base station. The network element is responsible for authorizing an application that is either resident within the mobile station or that is run in a device that is resident elsewhere in the network. The mobile station communicates with the network element over a communication link through the base station and other infrastructure components. The mobile station will only respond to attempts to trigger particular operations (e.g., run particular applications) if the mobile station receives a short message services (SMS) message as defined by Interim Specification 637A (IS-637A) which is published by the Telecommunication Industry Association (TIA)/Electronics Industry Association (EIA). More specifically, that SMS message must include an SMS Teleservice Identifier that has a particular pre-assigned value.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: January 20, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Douglas Rowitch, Kirk Burroughs