With Beam Steering, Scanning, Or Focussing Patents (Class 367/103)
  • Patent number: 11320534
    Abstract: An ultrasonic detecting device may include a transmitter, a receiver, a motor, and processing circuitry. The transmitter may transmit a sequence including a first pulse wave and a second pulse wave separated by a time interval shorter than a time required for an ultrasonic wave to make a round trip underwater to a detection range. The receiver may convert reflection waves of the first and second pulse waves into echo signals. The motor may rotate the receiver. The processing circuitry may acquire, from the echo signals, a first echo signal and a second echo signal, generate first image data based on the first echo signals and second image data based on the second echo signals, and generate synthesized image data based on an angular position of the receiver when the first image data is generated, and an angular position of the receiver when the second image data is generated.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: May 3, 2022
    Inventor: Kohei Kozuki
  • Patent number: 11129595
    Abstract: According to one embodiment, an ultrasonic diagnostic apparatus includes at least a memory circuitry, a processing circuitry, a data interpolation circuitry, and an image generating circuitry. The memory circuitry stores a plurality of pieces of reception data in an order of reception, the plurality of pieces of reception data being received continuously in a time series by a plurality of transducers, and specifies reading positions in an order different from the order of reception. The processing circuitry calculates a delay time, and calculates, based on the delay time, reading positions for acquiring reception data being used for calculating interpolation data from the memory circuitry. The data interpolation circuitry calculates interpolating data based on the plurality of pieces of reception data acquired from the calculated reading positions of the memory circuitry. The image generating circuitry generates an ultrasonic image based on a reception beam formed by using the interpolation data.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 28, 2021
    Assignee: Canon Medical Systems Corporation
    Inventors: Teruki Hagihara, Wataru Kameishi, Hiroyuki Shibanuma, Masaaki Ishitsuka, Shuta Fujiwara, Satoshi Kamiyama, Tomohiro Fujita
  • Patent number: 11035938
    Abstract: An ultrasound scanning system includes a probe adaptor, a plurality of channel modules and a backend controller. The probe adaptor is connected to an ultrasound probe and has a plurality of frontend channels. Each of the channel modules has an identification code and includes a switch, a transmitter, a transmitter beamformer, a receiver and a receiver beamformer, wherein the switch is coupled to the probe adaptor, the transmitter is coupled to the switch, the transmitter beamformer is coupled to the transmitter, the receiver is coupled to the switch, and the receiver beamformer is coupled to the receiver. The backend controller is coupled to the probe adaptor, the transmitter beamformer of each of the channel modules and the receiver beamformer of each of the channel modules.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 15, 2021
    Inventor: Chia-En Chuang
  • Patent number: 11016185
    Abstract: The application relates to bi-static or multi-static holographic navigation systems, including methods of localizing an emitter or receiver with high precision relative to the sea floor. The system and methods can be used with a fully active sonar or radar system using well synchronized transmitters and receivers. The system and methods can be used with a passive sonar or radar system localizing a transmitter or a receiver based on poorly timed received signals.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 25, 2021
    Assignee: HADAL, INC.
    Inventor: Richard J. Rikoski
  • Patent number: 10914827
    Abstract: An electronic device includes a first portion, a second portion, and a joint moveably coupling the first and second portions for angular adjustment between the first and second portions. A speaker is fixed on the first portion at a first known distance from the joint, and a microphone is fixed on the second portion at a second known distance from the joint. An angle sensing machine is configured to emit a known sound from the speaker, detect the known sound at the microphone, and measure a transmission time of the known sound from speaker to microphone. Based on the transmission time, a current angle of the first portion relative to the second portion is calculated.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: February 9, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Jeffrey Michael Davis
  • Patent number: 10914711
    Abstract: The present invention relates to a method for making a device for monitoring the structural integrity of structures such as beams, plates and shells, made of isotropic, anisotropic and/or laminated material, and to such a device. The method provides to define a asymmetric directivity function D(k1,k2) that has, in the domain of wave numbers, a plurality of maxima arranged on different concentric circumferences having center in the origin of the axes. Then a load distribution in spatial coordinates f(x1,x2) is computed by inverse Fourier transform of the directivity function D(k1,k2). Then therefore the device is made with the electrodes, whose shape is obtained by gathering the values of the load distribution f(x1,x2) in the plane having for coordinates the set of real numbers and imaginary numbers, defining at least two sectors of said plane that comprise at least one real value and one imaginary value.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: February 9, 2021
    Inventors: Luca De Marchi, Nicola Testoni, Alessandro Marzani
  • Patent number: 10877156
    Abstract: A system having a transceiver and a receiver. The transceiver may be configured to generate a light signal having a plurality of bands of light across a number of defined angles. Each of the light bands relates to a height of the transceiver relative to a road. The receiver may be configured to (i) receive the light signal and (ii) calculate a distance to the transceiver based on a detected one of the bands of light. The distance is used to provide localization in an autonomous vehicle application.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 29, 2020
    Assignee: VEONEER US INC.
    Inventor: Jin Jin
  • Patent number: 10848865
    Abstract: A method and device for sound source positioning using a microphone array. The method comprises: determining a horizontal axis that a microphone array rotates around as a reference axis; calculating, according to a sound emitted by a sound source that is collected by the microphone array, to obtain a first sound source estimated value indicating a sound source position in a three-dimensional space; acquiring an inclination angle between a plane in which the microphone array is located when it is rotating and a horizontal plane in which the reference axis is located; and according to the first sound source estimated value and the inclination angle, calculating out a second sound source estimated value on a horizontal plane corresponding to the first sound source estimated value, and using the second sound source estimated value as the determined sound source position.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 24, 2020
    Assignee: Weifang Goertek Microelectronics Co., Ltd.
    Inventors: Jian Zhu, Xiangdong Zhang, Zhiping Luo, Dong Yan, Zhuo Chen
  • Patent number: 10838059
    Abstract: An acoustic phased array antenna system comprising a plurality of omnidirectional receiving elements for addressing close-in fields and a plurality of non-omnidirectional receiving elements for addressing remote fields with the combined elements used to extend the maximum range of the antenna system. The non-omnidirectional receiving elements can be formed by adding focusing structures such as cylindrical or oval lenses in the receiving path of omnidirectional receiving elements. Antennas with a plurality of isotropic radiating and a plurality of non-isotropic radiating elements can be utilized for sonar and ultrasound systems. An acoustic phased array antenna system comprising a first plurality of receiving elements with a first field of view and a second plurality of receiving elements with a second field of view that is at least 50% narrower. An acoustic phased array with a plurality of isotropic radiators and a plurality of non-isotropic radiators to extend the range of the system.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: November 17, 2020
    Inventor: Raymond Albert Fillion
  • Patent number: 10799213
    Abstract: Provided are an ultrasound probe, an element circuit thereof, and an ultrasound diagnostic device, whereby high image quality is possible and reduced size and lower cost are made possible. Provided is an ultrasound probe, comprising: a 2-D array transducer wherein a plurality of transducers are arrayed two-dimensionally; and a 2-D array IC in which are formed, upon an IC substrate, drive circuits which are disposed upon each of the transducers of the 2-D array transducer to drive each of the transducers at different timings with a prescribed delay quantity, and common current sources which supply drive current to the transducers of the 2-D array transducer. The number n of the common current sources which are formed upon the IC substrate is fewer than the number N of the drive circuits which are formed upon the IC substrate.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: October 13, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Takuma Nishimoto, Yutaka Igarashi, Toru Yazaki, Kengo Imagawa, Yusaku Katsube
  • Patent number: 10746707
    Abstract: A UT method includes steps of: placing multiple sensors on a test object, the sensors each having multiple elements; connecting the sensors to a UT device such that multiple elements each selected one by one from each of the sensors are set as one group, and the multiple elements belonging to a same group are selectively connected to a common connector of the UT device via a switcher; inputting to the UT device a collection of UT conditions used for the multiple sensors; causing the UT device to perform UT operations sequentially while switching the sensors connected to the UT device with the use of the switcher; and storing UT data in which the sensors used for UT match UT conditions on the basis of the order of execution of UT conditions included in the collection of UT conditions.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: August 18, 2020
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventor: Yutaka Suzuki
  • Patent number: 10725158
    Abstract: An ultrasonic device provides a wider image to a user of the device and includes a transducer for transmitting a plane wave; and a processor for controlling the transducer to sequentially transmit plane waves in a plurality of different travelling directions and thereby extend a transmission range in which the plane waves travel, where the transducer receives a plurality of ultrasonic signals which are reflected from an object by each of the transmitted plane waves, and the processor synthesizes the plurality of received ultrasonic signals so as to image at least a predetermined partial region in the extended transmission range.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: July 28, 2020
    Assignee: Sogang University Research & Business Foundation
    Inventors: Mun-kyeong Hwang, Tai-kyong Song, Yong-sup Park, Hyun-taek Lee, Kang-won Jeon, Sua Bae
  • Patent number: 10698107
    Abstract: Improved two-dimensional planar array transducer and beamformer apparatus and methods. In one embodiment, the two-dimensional planar array transducer is capable of simultaneously or sequentially forming multiple acoustic beams in two axes and at two or more widely separated acoustic frequencies from a single flat planar array transducer. The transducer planar array consists of two or more electrically and acoustically independent two dimensional planar transducer array structures operating at different frequencies that are physically integrated onto a single multi frequency configuration. In an exemplary embodiment, a second higher frequency transducer array is positioned within the aperture area of a lower frequency planar array transducer. Methods of using the aforementioned two-dimensional planar array transducer and beamformer are also disclosed.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 30, 2020
    Assignee: Rowe Technologies, Inc.
    Inventors: Francis Dale Rowe, John Romeo
  • Patent number: 10637153
    Abstract: Embodiments of the present disclosure provide a reflector antenna and an antenna alignment method. The reflector antenna includes: a feed array, including N feeds, where N is an integer greater than 1; a reflector, configured to: reflect a signal from the feed array or reflect a signal to the feed array; and M radio frequency channels, where the radio frequency channel includes at least one of an adjustable gain amplifier or a phase shifter, configured to control a signal, M is an integer greater than 1 and less than N, each radio frequency channel corresponds to one of the N feeds, a correspondence between the radio frequency channel and the feed is changeable, and the radio frequency channel transmits or receives a signal by using a corresponding feed.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: April 28, 2020
    Inventors: Yanxing Luo, Hao Long, Fusheng Tang, Zhuo Zeng
  • Patent number: 10602266
    Abstract: The present technology relates to an audio processing apparatus and method capable of improving localization of an audio image at lower cost, and a program. A microphone array picks up a planar wave of the audio from a sound source. A drive signal generation unit generates a speaker drive signal of a spatial domain on the basis of a spatial frequency spectrum of a sound pickup signal acquired by the sound pickup by the microphone array. An orientation information acquisition unit acquires talker's orientation information on an orientation of a talker. A spatial filter application unit performs a filter processing on the speaker drive signal by use of a spatial filter defined by the talker's orientation information thereby to reduce spatial aliasing. The present technology can be applied to a spatial aliasing controller.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: March 24, 2020
    Assignee: Sony Corporation
    Inventor: Yuhki Mitsufuji
  • Patent number: 10560781
    Abstract: Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: February 11, 2020
    Inventors: David Allan Anderson, Mark F. Bocko
  • Patent number: 10502820
    Abstract: The invention generally relates to sonar devices that integrate forward-looking sensors with down-looking echosounders, side scanning sonar, or both. The invention provides a sonar system that includes a forward-looking sonar device that operates in an integrated fashion with one or more other sonar devices so that a boater can have a reliable navigation tool while also using sonar for finding fish and other features on the seafloor. The forward-looking sonar can include a transducer array that takes a three-dimensional acoustic reading of the objects and seafloor ahead. The electronics that process the acoustic data can also process data from down-looking sonar, side-scanning sonar, or both and can integrate the information to present an expansive display in the boat, revealing the contents and the floor of the sea in front of around, and under the boat.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: December 10, 2019
    Assignee: FarSounder, Inc.
    Inventors: Matthew Jason Zimmerman, Alexander Yakubovskiy, Nabin Sharma
  • Patent number: 10426441
    Abstract: Method and device for performing ultrasonic imaging on a region of interest are disclosed. The method comprises: emitting a first ultrasonic pulse and receiving a first ultrasonic echo signal; emitting a second ultrasonic pulse and receiving a second ultrasonic echo signal; emitting a third ultrasonic pulse and receiving a third ultrasonic echo signal; extracting echo signal components from the first ultrasonic echo signal, the second ultrasonic echo signal and the third ultrasonic echo signal; and producing an ultrasonic image of the region of interest according to the echo signal component; wherein, amplitude weighting of the third ultrasonic pulse is equal to the sum of amplitude weightings of the first ultrasonic pulse and the second ultrasonic pulse in magnitude. The method processes and modulates the plurality of ultrasonic echo signals, so as to separate nonlinear components and linear components in the ultrasonic echo signals.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: October 1, 2019
    Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
    Inventors: Maodong Sang, Zuhua Mao, Tinglan Ji
  • Patent number: 10345506
    Abstract: A waveguide comprises a first surface and a second surface. At least one of the first surface or the second surface comprises a plurality of grating structures. The waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface. The grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: July 9, 2019
    Assignee: Shenzhen Guangjian Technology Co., Ltd.
    Inventor: Fanglu Lyu
  • Patent number: 10306169
    Abstract: A pixel in an integrated-circuit image sensor is enabled to output, throughout a sampling interval, an analog signal having an amplitude dependent, at least in part, on photocharge integrated within a photosensitive element of the pixel. A plurality of samples of the analog signal are generated during an initial portion of the sampling interval that is shorter than a settling time for a maximum possible level of the analog signal.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 28, 2019
    Assignee: Rambus Inc.
    Inventors: Michael Guidash, Craig M. Smith, Jay Endsley
  • Patent number: 10104291
    Abstract: An imaging device includes an optical system including a movable lens, an image capture unit configured to capture a subject image through the optical system, a sound-collecting microphone, and a control unit configured to control the optical system and the image capture unit and to receive an sound signal from the microphone. The imaging device has a first mode and a second mode as moving-image shooting modes. The control unit makes the movable lens move faster in the first mode than in the second mode when a moving image is captured. The control unit filters the sound signal with a narrower-band filter in the first mode than in the second mode.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 16, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Yoshio Ohtsuka
  • Patent number: 10056915
    Abstract: A digital-to-analog converter (DAC) circuit includes a first DAC that produces a first analog output signal based upon a received multi-bit digital signal and upon a received clock. A second DAC that produces a second analog output signal based upon the received multi-bit digital signal and upon the received clock, wherein the first and second DACs are connected in parallel and process the same multi-bit digital signal. In one embodiment, the DACs produce differential signals. A low pass filter connected to receive the first and second analog outputs is configured to sum the first and second analog outputs and to filter the summed first and second analog outputs to produce an ingoing analog signal. An amplifier is connected to receive the ingoing analog signal to produce an amplified ingoing analog signal.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 21, 2018
    Inventor: Akinobu Onishi
  • Patent number: 10033473
    Abstract: A multiple-input multiple-output (MIMO) over-the-air (OTA) test system and method are provided that enable a device under test (DUT) to be tested that has no antenna connectors for interfacing antenna elements of the DUT with the MIMO OTA test system. The MIMO OTA test system and method can include a lens system that allows the OTA tests to be performed in a radiating near-field zone, thereby allowing a relatively small and less expensive anechoic chamber to be used in the MIMO OTA test system.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 24, 2018
    Assignee: Keysight Technologies, Inc.
    Inventors: Jukka Kyrolainen, Pekka Kyosti
  • Patent number: 10031226
    Abstract: An ultrasonic measurement apparatus includes a transmission processing unit that performs processing for transmitting an ultrasonic wave at a given transmission angle, a reception processing unit that performs reception processing of an ultrasonic echo with respect to the transmitted ultrasonic wave in first to Nth (N is an integer equal to or greater than 2) ultrasonic transducers; and a processing unit that performs processing with respect to first to Nth reception signals corresponding to the first to Nth ultrasonic transducers. The processing unit performs first phasing processing when a signal processing target point exists in a plane wave propagation region, and performs second phasing processing when the signal processing target point exists in a spherical wave propagation region, as phasing processing with respect to each of the reception signals of the first to Nth reception signals.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: July 24, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Hiroyuki Masuda
  • Patent number: 9936324
    Abstract: A novel system and method for spatial sound generation is disclosed. A system and method for generating bodiless mid-air speakers includes the steps of: generating a modulated signal by modulating an ultrasonic carrier signal with an audio signal, determining a phase delay value for each ultrasonic transducer of an array of ultrasonic transducers with respect to one or more focal points, and driving each such ultrasonic transducer with the modulated signal in accordance with the phase delay value determined for each ultrasonic transducer to generate audible sound at the one or more focal points.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: April 3, 2018
    Assignee: Pixie Dust Technologies, Inc.
    Inventors: Yoichi Ochiai, Takayuki Hoshi
  • Patent number: 9784832
    Abstract: Provided are a sonar system and transducer assembly for producing a 3D image of an underwater environment. The sonar system may include a housing having a transmit transducer that may transmit sonar pulses into the water. The system may include at least one sidescan transducer array in the housing that receives first and second sonar returns with first and second transducer elements and converts the first and second returns into first and second sonar return data. The first sidescan element may also transmit second sonar pulses, and at least one of the sidescan elements may receive the second sonar pulses to generate sidescan sonar return data. A sonar signal processor may then generate a 3D mesh data and sidescan image data and generate a 3D image data based on the 3D mesh data and sidescan image data. An associated method of using the sonar system is also provided.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: October 10, 2017
    Inventors: Alan Lee Proctor, David Austin Parks, Ronald Joe Horner, Matthew David Hunt
  • Patent number: 9778228
    Abstract: A self-contained monitor array for measuring at least one type of electromagnetic emission and at least one type of mechanical wave emission from a marine-based and/or terrestrial human activity or installation such as alternate energy sources. A multi-modal monitor system includes at least two such arrays, at least one clock, and at least one data storage unit. The monitor system is employed at the site of a turbine installation to measure at least one type of emission generated by the turbine and may comprise a controller to compare the emission signals with pre-determined acceptable value ranges and adjust the performance of the turbine accordingly.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: October 3, 2017
    Inventors: Paul D. Fucile, Glenn E. McDonald, Edward L. Hobart
  • Patent number: 9760986
    Abstract: An automated measurement system includes multi-axis imager configured to receive images of a workpiece wherein the images include visual information about the workpiece at a plurality of focus planes or visual information about the workpiece between at least two focus planes. The multi-axis imager is also configured to determine a point cloud of a plurality of 3 D data points wherein each of the plurality of 3 D data points represents an intersection of one of the plurality of focus planes with a surface of the workpiece or positional information of the workpiece in a de-focused area between the at least two focus planes. The multi-axis imager is further configured to determine a plurality of dimensions of features of the workpiece and compare the determined plurality of dimensions of the features to manufacturing specifications corresponding to at least some of the determined plurality of dimensions of the features.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: September 12, 2017
    Assignee: General Electric Company
    Inventors: Rajesh Ramamurthy, Kevin George Harding, Yi Liao, Ratnadeep Paul, Tao Jia, Xiaoming Du
  • Patent number: 9722671
    Abstract: A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: August 1, 2017
    Assignee: uBeam Inc.
    Inventors: Meredith Perry, Matthew Angle, Jonathan Bolus, Brian Kang, Paul Reynolds, Andrew Joyce, Sean Taffler, Alex Whittemore
  • Patent number: 9704474
    Abstract: An ultrasound transducer probe (104) includes a transducer array (108) of elements (110) that emit an ultrasound signal and receive analog echo signals produced in response thereto and a beamformer (112), housed by the probe, that converts the analog echo signals to digital signals, applies delays to the digital signals, and sums the delayed digital signals, produces a value of a bit stream, wherein the beamformer apodizes the signals.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: July 11, 2017
    Assignee: B-K Medical Aps
    Inventors: Martin C. Hemmsen, Borislav G. Tomov, Matthias B. Stuart, Jorgen Arendt Jensen
  • Patent number: 9693753
    Abstract: Provided are an ultrasonic probe capable of forming an image without degradation even when the frequency band of a photoacoustic wave and the frequency band of an ultrasonic wave used in ultrasonography are separated from each other, and an inspection object imaging apparatus including the ultrasonic probe. The ultrasonic probe includes a first array device capable of transmitting and receiving an ultrasonic wave; and a second array device capable of receiving a photoacoustic wave. The first array device includes plural electromechanical transducers arranged in a direction perpendicular to a scanning direction, the second array device includes plural electromechanical transducers arranged in a two-dimensional manner, and the first array device and the second array device are provided on the same plane and in the scanning direction.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 4, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Someda, Keishi Saito, Yasufumi Asao, Katsumi Nakagawa, Shigeru Ichihara
  • Patent number: 9658318
    Abstract: A system and a method involve acoustic source localization for multiple acoustic sources using passive sonar. Tracks are constructed based on source location maps (SLMs) that reveal the locations of the sources over a grid of tentative source locations. The proposed estimator for the SLMs performs coherent processing of broadband acoustic measurements, capitalizes on the sparse structure of the SLMs, and uses the prior SLM estimate to capture temporal information about the locations of the sources.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: May 23, 2017
    Inventors: Pedro A. Forero, Paul A. Baxley
  • Patent number: 9551610
    Abstract: A Remotely Powered Underwater Acoustic Sensor Networks (RPUASN) paradigm and the node architecture for RPUASN are disclosed. In RPUASN, sensor nodes harvest and store power supplied by an external acoustic source, extending their lifetime indefinitely. Necessary source characteristics are determined. The ability of an RPUASN sensor to harvest its required power is disclosed with respect to source parameters and distance to the source. Performance of RPUASN is directly related to the sensing coverage and communication connectivity over the field the sensor nodes are deployed. The required number of RPUASN nodes and the volume which is guaranteed to be covered by the nodes is disclosed in terms of electrical power, range, directivity and transmission frequency of the external acoustic source, and node power requirements.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: January 24, 2017
    Inventors: Semih Bilgen, Alper Bereketli
  • Patent number: 9548632
    Abstract: A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: January 17, 2017
    Assignee: UBEAM INC.
    Inventor: Meredith Perry
  • Patent number: 9542198
    Abstract: A dynamically reconfigurable framework manages processing applications in order to meet time-varying constraints to select an optimal hardware architecture. The optimal architecture satisfies time-varying constraints including for example, supplied power, required performance, accuracy levels, available bandwidth, and quality of output such as image reconstruction. The process of determining an optimal solution is defined in terms of multi-objective optimization using Pareto-optimal realizations.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: January 10, 2017
    Assignee: STC. UNM
    Inventors: Marios Stephanou Pattichis, Yuebing Jiang, Daniel Rolando Llamocca Obregon
  • Patent number: 9427137
    Abstract: A system (100) is provided for imaging a patient's interior. The system comprises an imaging sensor (120) for acquiring a series of images of a region of interest (020) in the patient's interior, and a plurality of light sources (140) for illuminating the region of interest in the patient's interior from different light source directions (152-156). A light controller (160) is provided for controlling individual ones (142-146) of the plurality of light sources (140) to dynamically vary the light source directions (152-156) during said acquiring. Moreover, a processor (180) is provided for obtaining lighting data (164) indicative of the dynamically varying light source directions. The processor (180) is further arranged for using the lighting data to apply a photometric stereo technique to the image data so as to establish a three-dimensional [3D] surface profile of the region of interest.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: August 30, 2016
    Inventors: Shankar Mosur Venkatesan, Pallavi Vajinepalli, Vipin Gupta, Sushanth Govinahallisathyanarayana, Mandar Shirikant Kulkarni
  • Patent number: 9395338
    Abstract: A self-contained monitor array for measuring at least one type of electromagnetic emission and at least one type of mechanical wave emission from a marine-based and/or terrestrial human activity or installation such as alternate energy sources. A multi-modal monitor system includes at least two such arrays, at least one clock, and at least one data storage unit.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: July 19, 2016
    Assignee: Woods Hole Oceanographic' Institution
    Inventors: Paul Dominic Fucile, Glenn Elwin McDonald, Edward Leo Hobart
  • Patent number: 9339258
    Abstract: There is provided an ultrasonic diagnosis apparatus capable of reducing an unnecessary signal component in a reception signal. A plurality of sign bits arranged in the channel direction are extracted from a plurality of element reception signals. A binarization circuit applies binarization processing to the plurality of sign bits to thereby generate a sign data array. An evaluation value computing unit computes an evaluation value (GSCF) based on a DC vicinity component contained in the sign data array on the frequency axis. This evaluation value is used to adjust the gain of the reception signal in a multiplier. With application of the binarization processing, excessive reduction of the reception signal can be prevented. Further, as the DC vicinity component is referenced, the side-lobe component can be appropriately reduced even if a certain degree of fluctuation exists in the main-lobe component.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: May 17, 2016
    Inventor: Masanori Hisatsu
  • Patent number: 9307325
    Abstract: There is disclosed a transducer apparatus for acoustic communications through a substrate at a predetermined center frequency, the apparatus comprising:—an active piezoelectric element for generating an acoustic signal; an intermediate layer, having a surface for accommodating the piezoelectric element, and having a first array of protrusions on a surface opposite the surface for accommodating the piezoelectric element; and a second array of protrusions at the substrate, wherein the active piezoelectric element is mounted onto the intermediate layer, and the intermediate layer is secured in position relative to the substrate such that the first array of protrusions faces the second array of protrusions such that the acoustic signal may propagate through the first and second arrays. There are further disclosed a method of mounting such an apparatus and a plate suitable for use in the transducer apparatus.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: April 5, 2016
    Assignee: BAE SYSTEMS plc
    Inventors: Lionel William John Kent, John Martin Bagshaw, Duncan Peter Rowe
  • Patent number: 9286418
    Abstract: A method for designing an acoustic array includes establishing a desired beam pattern, acoustic wavelength and beamwidth for the array. Geometric parameters are calculated from these constraints. The array is modeled as a plurality of elements positioned in accordance with the geometric parameters. An amplitude shading function is calculated. An array of acoustic elements is constructed having an area calculated from the calculated amplitude shading function. An acoustic array designed by this process is further provided.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: March 15, 2016
    Inventors: Stephen C Butler, Thomas A Frank, Jackeline D Diapis
  • Patent number: 9232933
    Abstract: A low-loss high-voltage multiplexer is implemented using a transformer that is connected to one transmitter, one receiver and transducer elements. At least one primary winding is magnetically coupled at least two secondary windings. For example, a first transducer element and a second transducer element are connected to the secondary windings of a multiplexer that multiplexes between these transducer elements via the secondary windings. The multiplexer also optionally switches between the transmitter and the receiver during the transmission and the reception.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: January 12, 2016
    Inventors: David Oaks, Daniel Brueske
  • Patent number: 9209909
    Abstract: The position of a mobile unit (12) within a detection zone is determined. An acoustic signal is emitted from the mobile unit and received along a first path (54). An echo of the signal is received after reflection from a surface (46) within said detection zone. The position of the mobile unit (12) within the detection zone is determined from the times of arrival of the signal and echo.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: December 8, 2015
    Inventors: Wilfred Edwin Booij, Oystein Haug Olsen
  • Patent number: 9157982
    Abstract: An ultrasonic locationing system includes an emitter operable to emit at least two ultrasonic frequency tones sequentially in one ultrasonic burst. These tones, which may contain multiple frequency components, define a unique regional address. A mobile device with a microphone is operable to receive the ultrasonic burst and have a processor determine the sequential tones. A location of the device can be found from a table of predefined tones assigned to known regional addresses.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 13, 2015
    Assignee: Symbol Technologies, LLC
    Inventor: Richard J. Lavery
  • Patent number: 9081084
    Abstract: Embodiments of performing beam forming processing based on sampling data in an ultrasound system are disclosed. The ultrasound system includes an ultrasound data acquisition unit configured to form a receive signal based on an ultrasound signal reflected from a target object, perform an analog-to-digital conversion on the receive signal to form sampling data, select pixels, which the respective sampling data are used as pixel values thereof among the plurality of pixels, cumulatively assign the corresponding sampling data to the selected pixels and perform beam forming upon the cumulatively assigned sampling data for the respective pixels to form receive-focused data.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: July 14, 2015
    Inventor: Min Woo Kim
  • Patent number: 8988970
    Abstract: The dereverberation of signals in reverberating environments is carried out via acquiring the representation (image) of spatial distribution of the signals in space of interest and automatic identification of reflections of the source signal in the reverberative space. The technique relies on identification of prominent features at the image, as well as corresponding directions of propagation of signals manifested by the prominent features at the image, and computation of similarity metric between signals corresponding to the prominent features in the image. The time delays between the correlated signals (i.e., source signal and related reflections) are found and the signals are added coherently. Multiple beamformers operate on the source signal and corresponding reflections, enabling one to improve the signal-to-noise ratio in multi-path environments.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: March 24, 2015
    Assignee: University of Maryland
    Inventors: Adam O'Donovan, Ramani Duraiswami, Dmitry N. Zotkin
  • Publication number: 20150077285
    Abstract: The subject matter disclosed herein relates to determining a distance from a mobile device to a remote object or a size of the remote object.
    Type: Application
    Filed: June 24, 2014
    Publication date: March 19, 2015
    Inventor: Manish Mahajan
  • Patent number: 8968205
    Abstract: Sub-aperture control is provided for high intensity focused ultrasound. Test transmissions are made sequentially from different sub-apertures. The tissue response at the focal regions is determined and used to select sub-apertures. For example, one or more sub-apertures are not used where temperature does not rise above certain threshold or tissue displacement is weak, such as associated with intervening bone or attenuating tissue. Other factors may be used instead or in addition to tissue response at the focal region. Relative proximity of the sub-apertures to a lesion, angular distribution of the sub-apertures, shape or size of the sub-aperture focal regions as compared to the tissue to be treated, or combinations thereof may be used. Once selected, the relative weight for each sub-aperture may be adjusted based on measured tissue response for each sub-aperture, such as to provide more equal treatment contribution from different sub-apertures.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: March 3, 2015
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Xiaozheng Zeng, Kevin Michael Sekins, Stephen Barnes
  • Patent number: 8964507
    Abstract: Acoustic arrays transmitting and/or receiving multiple, angularly dispersed acoustic beams are used to generate 2D and 3D images. The acoustic arrays may comprise frequency-steered acoustic arrays provided in one-dimensional linear and two dimensional planar and curvilinear configurations, which may be operated as single order or multiple order arrays, may employ periodic or non-periodic transducer element spacing, and may be mechanically scanned to generate 2D and 3D volumetric data. Methods and systems for operating acoustic arrays in a frequency-steered mode in combination a mechanical beam steering mode, electronic time-delay and phase shift beam forming modes, and phase comparison angle estimation modes are also provided. Methods for generating two and three dimensional images of underwater target scenes using multi-beam acoustic imaging systems are disclosed.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: February 24, 2015
    Assignee: Teledyne Blueview, Inc.
    Inventors: Scott T. Bachelor, R. Lee Thompson, Jason L. Seawall
  • Patent number: RE45379
    Abstract: A sonar array for forming multiple transmit and/or receive acoustic beams by a frequency beamforming technique. In frequency division beamforming, beam steering direction is made a function of frequency by driving (receiving) each element of a uniformly spaced line array by a signal which leads or lags its nearest neighbor by a fixed phase shift, ??. This permits scanning a transmit and/or receive beam through a range of angles by changing its frequency. The same principle can be used to form multiple simultaneous transmit and/or receive beams. This is accomplished by transmitting a wide bandwidth signal and receiving the echoes through a spectrum analyzer. Each frequency bin of the spectrum analyzer then corresponds to a beam pointing in its own unique direction. Advantages of such a sonar system include improved cost, weight, and size versus performance for a variety of systems including ahead looking sonars and bottom mapping sonars.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: February 17, 2015
    Assignee: Teledyne Blueview, Inc.
    Inventor: Francis D. Rowe
  • Patent number: RE46931
    Abstract: A system and method for ultrasonic imaging utilizing multiple sets of transmit pulses differing in amplitude, frequency, phase, and/or pulse width. One embodiment has phase differences between the k transmit signal as 360 k degrees providing for constructive interference of the kth order harmonic pulse, while an amplitude modulation of each transmit profile is constant between sets. These sets of pulses are transmitted into media of interest and received echoes from these pulses are combined to form an averaged signal. The averaged pulses represent the net common mode signal received from each of the transmit sets. This combined signal set is used to reconstruct an ultrasound image based on broad beam reconstruction methodology.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: July 3, 2018
    Inventors: Glen McLaughlin, Ting-Lan Ji