Patents Examined by Erin F Heard
  • Patent number: 11555920
    Abstract: Methods and systems for estimating vehicle velocity based on radar data. The methods and systems include receiving a set of range-Doppler-beam, RDB, maps from radars located on a vehicle and performing an optimization process that adjusts an estimate of vehicle velocity so as to optimize a correlation score. The optimization process includes iteratively: spatially registering the set of RDB maps based on the current estimate of vehicle velocity, determining the correlation score based on the spatially registered set of RDB maps, and outputting an optimized estimate of vehicle velocity from the optimization process when the correlation score has been optimized. The methods and systems control the vehicle based at least in part on the optimized estimate of vehicle velocity.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: January 17, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Oren Longman, Igal Bilik
  • Patent number: 11555908
    Abstract: A method includes generating a first modulated continuous wave from a generating location; transmitting the first modulated continuous wave to an object positioned at a distance from the generating location; generating a second modulated continuous wave from the generating location, wherein the second modulated continuous wave is generated at a predetermined time that is different from a predetermined time at which the first modulated continuous wave is generated; receiving, at a mixer, the first modulated continuous wave from the object; receiving, at the mixer, the second modulated continuous wave from the generating location; mixing the received first modulated continuous wave with the second modulated continuous wave to produce a beat signal to determine a range of the object from the generating location; and outputting the determined range of the object from the generating location.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: January 17, 2023
    Assignee: International Business Machines Corporation
    Inventor: Asaf Tzadok
  • Patent number: 11555885
    Abstract: An embodiment of the present invention is a method of transmitting a multibeam jamming signal of an array antenna and including: a signal receiving operation of receiving a radar signal from a plurality of radars; a signal analysis operation of analyzing the received radar signal and identifying an angle and frequency of the signal; a control phase value calculating operation of calculating a control phase value of each array path of the array antenna for each of the identified angles; and a multibeam jamming signal transmission operation of calculating a multibeam jamming signal based on the calculated control phase value and transmitting the multibeam jamming signal for each identified frequency.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 17, 2023
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Yeon Soo Jang, In Seon Kim, Sang Won Kim, Beom Jun Park, Un Seob Jeong
  • Patent number: 11550049
    Abstract: Radar based HR and BR measurements by simultaneous decoding is a technical problem due to presence of intermodulation of BR and HR harmonics, which degrades simultaneous decoding. Embodiments herein provide a method and system for unobtrusive liveliness detection and monitoring of a subject using a Dual Frequency Radar (DFR) in an IOT network. The system has the capability to completely process the captured raw signals onboard to by applying required signal conditioning and extraction of relevant information using unique signal processing techniques for determining the HR and the BR of the subject accurately. The intermodulation of BR and HR harmonics is eliminated by the system by performing frequency spectrum averaging of both radars signals, which improves the accuracy. Further, the system is configured with a light MQTT protocol and encoding modules for any data to be shared for off board processing, ensuring data security and privacy compliance.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: January 10, 2023
    Assignee: Tata Consultancy Services Limited
    Inventors: Anwesha Khasnobish, Arindam Ray, Smriti Rani, Amit Swain, Chirabrata Bhaumik, Tapas Chakravarty
  • Patent number: 11550030
    Abstract: In a frequency-offset self-injection-locked (FOSIL) radar, a first mixer is provided to mix a first oscillation signal of a first injection-locked oscillator (ILO) and a second oscillation signal of a second ILO so as to cancel out the frequency drifts of the first and second oscillation signals. Accordingly, the transmit frequency of the FOSIL radar can remain constant to mitigate the EMI issue.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: January 10, 2023
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Fu-Kang Wang, Kuan-Hung Chen, Pin-Hsun Juan
  • Patent number: 11550064
    Abstract: An apparatus and a method for providing a global localization output are provided. When the apparatus receives navigation signals, the apparatus processes the signals to determine, based on a fixed earth-centered, earth-fixed (ECEF) reference pose of a reference point in an ECEF coordinate, a new ECEF pose, and to convert the fixed ECEF reference pose to an east-north-up (ENU) reference pose in an ENU coordinate. When the apparatus determines that a jump occurs in the new ECEF pose based on a pose change between the new ECEF pose and a previous ECEF pose, the apparatus calculates a reference shift of the ENU reference pose based on the pose change to absorb the jump in the ENU coordinate, and updates the ENU reference pose based on the reference shift. Thus, a new ENU local pose may be obtained using the ENU reference pose.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 10, 2023
    Assignee: GUANGZHOU XIAOPENG AUTOPILOT TECHNOLOGY CO., LTD.
    Inventors: Hairuo Zhuang, Amit Bansal, Venkatesan Nallampatti Ekambaram, Vignesh Sethuraman
  • Patent number: 11550027
    Abstract: A radar system is disclosed that provides joint object detection and communication capabilities. The radar system includes a communication signal generator that provides a communication signal, a pre-distortion module that applies a pre-distortion to the communication signal to provide a pre-distorted communication signal, a linear frequency modulation (LFM) signal generator that provides a LFM signal, and a mixer that mixes the pre-distorted communication signal onto the LFM signal to provide a radar signal to be transmitted by the radar system. The radar system further includes an all-pass filter that filters a plurality of de-ramped reflected images of the radar signal to provide a filtered signal. Each de-ramped reflected image includes an associated image of the pre-distorted communication signal. The all-pass filter provides a linear group delay, and a non-linear phase response. The pre-distortion is an inverse of the non-linear phase response of the all-pass filter.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: January 10, 2023
    Assignee: NXP B.V.
    Inventors: Francesco Laghezza, Franz Lampel
  • Patent number: 11543518
    Abstract: A vehicle radar apparatus and a method of controlling the vehicle radar apparatus, including a transmission array antenna that radiates a radar signal for forward detection; a reception array antenna that operates at N (N is an integer greater than zero) reception channels for receiving the radar signal that is radiated by the transmission array antenna, reflects from a target, and returns; an azimuth angle estimation unit that estimates an azimuth angle of the target using each non-offset reception channel of the N reception channels; and an elevation angle estimation unit that estimates an elevation angle of the target in a diagonal direction in which each non-offset channel of the N reception channels is tilted with respect to an azimuth angle of an offset reception channel thereof.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: January 3, 2023
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Se Yoon Kim
  • Patent number: 11536831
    Abstract: An autonomous vehicle (AV) includes a radar sensor system and a computing system that computes velocities of an object in a driving environment of the AV based upon radar data that is representative of radar returns received by the radar sensor system. The AV can be configured to compute a first velocity of the object based upon first radar data that is representative of the radar return from a first time to a second time. The AV can further be configured to compute a second velocity of the object based upon second radar data that includes at least a portion of the first radar data and further includes additional radar data representative of a radar return received subsequent to the second time. The AV can further be configured to control one of a propulsion system, a steering system, or a braking system to effectuate motion of the AV based upon the computed velocities.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: December 27, 2022
    Assignee: GM CRUISE HOLDINGS LLC
    Inventor: Zhi Yuan Sherwin Lau
  • Patent number: 11531083
    Abstract: Techniques are disclosed for systems and methods to provide a staggered multichannel transducer in a ranging system configured to perform remote sensing. The staggered multichannel transducer may extend in a first direction and one or more transducer elements of the array may offset from the other transducer elements in a second direction perpendicular to the first direction. The staggered arrangement of the transducer elements may improve remote sensing performance to produce accurate remote sensing data and/or imagery. The staggered arrangement also may reduce a number of transducer elements used in the transducer array which reduce the cost and complexity of the transducer array. Further, the staggered arrangement in a linear transducer array also allows for two-dimensional beam forming.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: December 20, 2022
    Assignee: Teledyne FLIR, LLC
    Inventors: Paul Stokes, Patrick Lamontagne, Pierre Poitevin
  • Patent number: 11531099
    Abstract: Systems and methods for detection and reporting of small targets to an operational area. Exemplary embodiments are presented to detect targets such as avian species, UAS, UAV, and drones, and transmit unique small target identifier information via data link, such as ADS-B, to an operational area.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: December 20, 2022
    Assignee: Ohio University
    Inventors: Chris G. Bartone, Anthony Milluzzi
  • Patent number: 11525909
    Abstract: A measurement method performed at a receiving device involves sequentially receiving RF signals, each comprising a different set of at least first and second tones at differing frequencies. Complex gain responses (CGRs) for each of the first and second tones of each of the RF signals are measured. A phase offset is determined between: i) a phase of the CGR of the second tone of a first RF signal, and ii) a phase of the CGR of the first tone of a second RF signal. A coherent channel frequency (CCF) response of the second tone of the second RF signal is computed by adjusting a phase of the CGR of the second tone of the first RF signal by the phase offset. A processor executes a signal paths calculation algorithm using the CCF response of the second tone of the second RF signal to determine an angle or time of arrival of the first RF signal.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: December 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Fei Tong, Jacob Christopher Sharpe
  • Patent number: 11525886
    Abstract: A novel and useful system and method by which radar angle and range resolution are significantly improved without increasing complexity in critical hardware parts. A multi-pulse methodology is described in which each pulse contains partial angular and range information consisting of a portion of the total CPI bandwidth, termed multiband chirp. Each chirp has significantly reduced fractional bandwidth relative to monoband processing. Each chirp contains angular information that fills only a portion of the ‘virtual array’, while the full virtual array information is contained across the CPI. This is done using only a single transmission antenna per pulse, thus significantly simplifying MIMO hardware realization, referred to as antenna-multiplexing (AM). Techniques for generating the multiband chirps as well as receiving and generating improved fine range-Doppler data maps. A windowing technique deployed in the transmitter as opposed to the receiver is also disclosed.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: December 13, 2022
    Inventors: Yoram Stettiner, Noam Arkind
  • Patent number: 11525911
    Abstract: Systems and methods to control a radar system to perform cross-traffic management in a vehicle with a trailer involve determining a location of the trailer behind the vehicle, and adjusting an initial field of view of the radar system to a modified field of view that excludes the location of the trailer. One or more other vehicles are detected with the radar system having the modified field of view. A cross-traffic alert is implemented based on the detecting the one or more other vehicles.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: December 13, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jay H. Sim, Justin K. Francisco, Kevin G. Korchmaros
  • Patent number: 11525928
    Abstract: Provided is an electronic device capable of suitably determining whether a user is moving or stationary. The electronic device includes a speed acquisition unit that acquires a user's moving speed and a processor that determines whether the user is in a moving state or in a pause state. In the moving state, the processor determines that a transition from the moving state to the pause state has occurred in the case where the moving speed acquired by the speed acquisition unit is less than the pause speed threshold. In the pause state, the processor determines that a transition from the pause state to the moving state has occurred in the case where the moving speed acquired by the speed acquisition unit is equal to or more than the moving speed threshold.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: December 13, 2022
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Keiichi Imamura
  • Patent number: 11525908
    Abstract: Embodiments are directed to a method for determining velocity of an object. The method includes in response to two interleaved chirp sequences being sent towards the object, processing responsive chirps of each of the two interleaved chirp sequences independently from one another to produce respective Doppler-spectrum data sets, and calculating the velocity of the object based on the respective Doppler-spectrum data sets. Each of the interleaved chirp sequences being characterized by a common time spacing between respective chirps of the respective chirp sequence, and each chirp of one of the chirp sequences being offset by an amount of time that is different than the common time spacing.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 13, 2022
    Assignee: NXP B.V.
    Inventors: Francesco Laghezza, Feike Guus Jansen
  • Patent number: 11520032
    Abstract: A method and electronic device for object detection. The electronic device includes at least a first antenna pair comprising a first transmitter antenna configured to transmit signals and a first receiver antenna configured to receive signals, a memory, and a processor. The processor is configured to control the first transmitter antenna to transmit a first signal, generate a channel impulse response (CIR) based on receiving, by the first receiver antenna, a reflection of the first signal, determine a location of at least one leakage peak in the CIR, compare a first segment of taps in the CIR prior to the at least one leakage peak with a second segment of taps in the CIR after the leakage peak, and determine an object is present based on symmetry between the first and second segments of taps.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: December 6, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pengda Huang, Vutha Va, Wenxun Qiu, Boon Loong Ng
  • Patent number: 11513206
    Abstract: Exemplary aspects are directed to circuitry that assesses and differentiates a set of targeted data and updates a high-level bin with a numerical value indicating the number of data elements that compared successfully with a predefined value range defined for each bin. A cumulative sum of the high-level bins may then be calculated. Following, a target threshold may be compared to the cumulative sum at each bin and then providing an indication upon discovering a cumulative sum exceeding the threshold. The targeted data may be further refined by changing (through circuitry or other intervention) the predefined range values and then reprocessing the targeted data.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: November 29, 2022
    Assignee: NXP B.V.
    Inventors: Marco Jan Gerrit Bekooij, René Geraets
  • Patent number: 11513209
    Abstract: Embodiments of the present disclosure describe mechanisms for radio frequency (RF) ranging between pairs of radio units based on radio signals exchanged between units. An exemplary radio system may include a first radio unit, configured to transmit a first radio signal, and a second radio unit configured to receive the first radio signal, adjust a reference clock signal of the second radio unit based on the first radio signal, and transmit a second radio signal generated based on the adjusted reference clock signal. Such a radio system may further include a processing unit for determining a distance between the first and second radio units based on a phase difference between the first radio signal as transmitted by the first radio unit and the second radio signal as received at the first radio unit. Disclosed mechanisms may enable accurate RF ranging using low-cost, low-power radio units.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: November 29, 2022
    Assignee: ANALOG DEVICES, INC.
    Inventor: Tao Yu
  • Patent number: 11513212
    Abstract: The invention relates to a method and a motor vehicle comprising a sensor assembly for a 360° detection of the motor vehicle surroundings. The sensor assembly has multiple sensors of the same type, wherein each of the multiple sensors has a specified detection region and the sensors are distributed around the exterior of the motor vehicle such that the detection regions collectively provide a complete detection zone which covers the surroundings in a complete angle about the motor vehicle at a specified distance from the motor vehicle. The sensors are each designed to detect the surroundings in their respective detection region as respective sensor data in respective successive synchronized time increments. The sensor assembly has a pre-processing mechanism which fuses the sensor data of each of the sensors in order to generate a three-dimensional image of the surroundings for a respective identical time increment and provides same in a common database.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: November 29, 2022
    Assignee: AUDI AG
    Inventors: Tim Kubertschak, Thomas Bock