Receiver Circuitry Patents (Class 367/135)
  • Patent number: 10658996
    Abstract: The invention relates to a method for rendering ultrasonic signals audible that is characterized in that the temporal dynamic range of the ultrasonic signal is maintained. The amplitude profile of the ultrasonic signal picked up in the time domain remains unaltered. The frequency shift from the ultrasonic range to the audible range is possible up to a factor of 32 using the present invention.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: May 19, 2020
    Assignee: SONOTEC Ultraschallsensorik Halle GmbH
    Inventors: Peter Holstein, Sebastian Uziel, David Januszko, Andreas Tharandt, Ronald John, Nicki Bader
  • Patent number: 10634784
    Abstract: A device and a method for detecting main acoustic indexes of multi-beam sonar pertaining to the field of hydrographic surveying and charting technology. The device includes a rotating device and a lifting gear installed in an anechoic tank. The bottom of the rotating device is equipped with a multi-beam sonar that has its rotating plane perpendicular to the direction of track line and transmits signals along the horizontal direction. A standard hydrophone is equipped at the bottom of the lifting gear, and is connected with a signal collector. The device utilizes the standard hydrophone to receive the pulse signals transmitted by the multi-beam sonar and employs the multi-beam sonar to receive the standard sound source signals, designs the detection process for data collection for analysis and research, thereby achieving the detection of the frequency, source level and beam angle of multi-beam sonar.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 28, 2020
    Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Fanlin Yang, Xiankun Wang, Donghui Li, Qianqian Li, Bo Shi, Dong Jing, Xiushan Lu, Xiaodong Cui
  • Patent number: 10622969
    Abstract: The acoustic wave element of the present invention includes a multi-mode type filter and a capacitance part. The multi-mode type filter includes a substrate comprised of a piezoelectric crystal; a first IDT to which a signal is input and a second IDT which is adjacent to this, each IDT including a first comb-shaped electrode and a second comb-shaped electrode which is connected to a reference potential, each comb-shaped electrode being located on the upper surface of the substrate and including a plurality of electrode fingers. The capacitance part is located on the upper surface of the substrate and includes a first counter electrode which is electrically connected to the first IDT at the first comb-shaped electrode side, and a second counter electrode which is arranged at a distance from the first counter electrode and is connected to the reference potential.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: April 14, 2020
    Assignee: KYOCERA Corporation
    Inventor: Tetsuya Kishino
  • Patent number: 10601523
    Abstract: The embodiments herein disclose an apparatus and method developed for the direct application in data transmission between the user devices with computational power, without requiring an additional hardware or any other connectivity. The method comprises the following steps of receiving a digital data and a carrier signal as input; encoding the digital data into digital acoustic signal; transmitting the digital acoustic signal; capturing the acoustic signal by the microphone; demodulating the acoustic signal and decoding the digital sound data for recovering the original data.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: March 24, 2020
    Assignee: NAFFA INNOVATIONS PRIVATE LIMITED
    Inventor: Kumar Abhishek
  • Patent number: 10579633
    Abstract: Systems and techniques for reducing probabilistic filter query latency are described herein. A query for a probabilistic filter that is stored on a first media may be received from a caller. In response to receiving the query, cached segments of the probabilistic filter stored on a second media may be obtained. Here, the probabilistic filter provides a set membership determination that is conclusive in a determination that an element is not in a set. The query may be executed on the cached segments resulting in a partial query result. Retrieval of remaining data of the probabilistic filter from the first media to the second media may be initiated without intervention from the caller. Here, the remaining data corresponds to the query and data that is not in the cached segment. The partial query results may then be returned to the caller.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: March 3, 2020
    Assignee: Micron Technology, Inc.
    Inventors: David Boles, John M. Groves, Steven Moyer, Alexander Tomlinson
  • Patent number: 10547359
    Abstract: Apparatus is provided for: storing at least one three-dimensional matrix C[M][N][K] of calibration data; performing singular value decomposition of each at least one three-dimensional matrix C[M][N][K] of calibration data to produce at least one first unitary rotation matrix U, at least one diagonal scaling matrix S and at least one second unitary rotation matrix V; and resizing each of the at least one first unitary rotation matrix U, the at least one diagonal scaling matrix S and the at least one second unitary rotation matrix V by removing dimensions therefrom, thereby producing resized matrices U, S and V. Corresponding decompression is also provided.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: January 28, 2020
    Assignee: Provenance Asset Group LLC
    Inventor: Xianjun Jiao
  • Patent number: 10534083
    Abstract: Systems and methods for color Doppler imaging in an ultrasound imaging system are disclosed herein. An ultrasound imaging system includes color Doppler imaging circuitry. The color Doppler imaging circuitry is configured to estimate flow parameters. The imaging circuitry includes a radio frequency (“RF”) demodulator configured to produce in-phase and quadrature components of an ultra-sound data vector. The RF demodulator includes a table in memory that stores interleaved sine and cosine values. The RF demodulator maintains an index value for the table having higher precision than is used to index the table. The RF demodulator rounds the index value for each access of the table. Each table access retrieves a sine value and a cosine value.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: January 14, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Udayan Dasgupta, David P. Magee, Murtaza Ali
  • Patent number: 10499151
    Abstract: A system and method for processing and enhancing utility of a sound mask noise signal, including generating, by a signal processor, the sound mask noise signal by modulating a noise signal with embedded additional information; outputting, by a plurality of audio speakers, sound signals comprising the sound mask noise signal with the embedded additional information; and receiving, by one or more microphones, the outputted sound signals comprising the sound mask noise signal, wherein an impulse response between each audio speaker and each microphone is measured in real time based on the embedded additional information.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: December 3, 2019
    Assignee: Nureva, Inc.
    Inventor: Grant Howard McGibney
  • Patent number: 10426352
    Abstract: An object information acquiring apparatus is provided that includes: a plurality of receiving elements which receive an acoustic wave that propagates from an object, and which convert the acoustic wave to a reception signal; an adaptive beamformer that performs adaptive beamforming of adjusting reception directionality in accordance with the reception signal in use of the reception signal; a delay-and-sum beamformer that performs delay-and-sum beamforming having preset directionality in use of the reception signal; an amplitude modulator that uses one output signal of one of the adaptive beamformer and the delay-and-sum beamformer, to perform amplitude modulation on an output signal of the other one of the beamformers; and a generator that, on the basis of a signal outputted by the amplitude modulator, generates image data on the interior of the object.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: October 1, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Haruo Yoda
  • Patent number: 10413279
    Abstract: The disclosure provides a color ultrasound system and a method and a device thereof for obtaining beam-forming line data. The method comprises: a processor sending a control command according to a currently triggered color ultrasonograph mode; the processor receiving the digital ultrasonic echo signal data obtained according to the control command, wherein the digital ultrasonic echo signal data is a digital signal obtained by performing analog-to-digital conversion on an analog ultrasonic echo signal; and the processor performing beam-forming processing on the digital ultrasonic echo signal data to obtain corresponding beam-forming line data. With the disclosure, the color ultrasound system hardware is simple in design and flexible, and resource conservation and cost reduction are achieved during technical update.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: September 17, 2019
    Assignee: BEIJING EAST WHALE IMAGE TECHNOLOGY CO., LTD.
    Inventors: Xun Zhu, Zongmin Zhao, Fubing Li, Shiyu Wei, Peter Pihsien Chang
  • Patent number: 10352912
    Abstract: According to an embodiment, a structure evaluation system has a plurality of sensors, a signal processor, and an evaluator. The sensors detect an elastic wave generated from a structure. The signal processor acquires a reliability from a source of the elastic wave to the plurality of sensors by performing signal processing on the elastic wave detected by the plurality of sensors. The evaluator evaluates the soundness of the structure on the basis of the acquired reliability.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: July 16, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Sanae Iida, Takashi Usui
  • Patent number: 10350639
    Abstract: An ultrasonic device includes an element substrate provided with an ultrasonic transducer array in which a plurality of ultrasonic transducers are arranged in an array, a sealing plate (array counter plate) that is bonded to the element substrate and covers at least the ultrasonic transducer array, and a support substrate that supports at least one of the element substrate and the sealing plate, and the support substrate has a through hole (insertion section) into which at least part of the sealing plate is inserted.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: July 16, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Kanechika Kiyose
  • Patent number: 10305488
    Abstract: A circuit device includes an oscillation signal generation circuit that generates an oscillation signal having an oscillation frequency set by the frequency control data by using a resonator, and a processor that is configured to perform a signal process on input frequency control data to output frequency control data. The processor is configured to obtain a pre-estimated value x^?(k) at a time step k by adding a post-estimated value x^(k?1) and a correction value D(k?1) at a time step k?1 together during a process of updating a pre-estimated value in a Kalman filter process, and perform aging correction on the frequency control data on the basis of a result of the Kalman filter process.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 28, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takemi Yonezawa
  • Patent number: 10305489
    Abstract: A circuit device includes an oscillation signal generation circuit that generates an oscillation signal having an oscillation frequency, the oscillation frequency being a frequency set by using frequency control data, and a processor that is configured to perform a signal process on input frequency control data, and. The processor is configured to acquire the frequency control data from which an environmental change component is removed of the environmental change component and an aging change component by using environmental change component information, and perform aging correction on the basis of the frequency control data from which the environmental change component is removed.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 28, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takemi Yonezawa
  • Patent number: 10298175
    Abstract: A circuit device includes an oscillation signal generation circuit that generates an oscillation signal having an oscillation frequency using a resonator, the oscillation frequency being a frequency set by using frequency control data, and a processor configured to perform a signal process on input frequency control data based on a phase comparison result between an input signal based on the oscillation signal and a reference signal. The processor is configured to estimate a true value for an observed value of the frequency control data based on the phase comparison result through a Kalman filter process in a period before a hold-over state is detected, and generate aging-corrected frequency control data, in a case where the hold-over state is detected, by holding the true value at a timing corresponding to a timing of detecting the hold-over state, and by performing a calculation based on the true value.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 21, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takemi Yonezawa
  • Patent number: 10126443
    Abstract: A new adaptive filtering technique to reduce microphonic noise in radiation detectors is presented. The technique is based on system identification that actively cancels the microphonic noise. A sensor is used to measures mechanical disturbances that cause vibration on the detector assembly, and the digital adaptive filtering estimates the impact of these disturbances on the microphonic noise. The noise then can be subtracted from the actual detector measurement. In this paper the technique is presented and simulations are used to support this approach.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: November 13, 2018
    Assignee: The Regents of the University of California
    Inventor: Sergio Zimmermann
  • Patent number: 10116370
    Abstract: A number LR of receive beamforming circuits provided in a receive beamformer execute receive beamforming (NR/LR) times with respect to a received signal vector received by NR reception antennas AR, thereby generating a receive beamforming (BF) output vector having NR receive BF output components. A calculation processor calculates a reception power for each of the NR receive BF output components, selects LR receive BF output components in decreasing order of reception power, and determines a suitable receive BF weight matrix including LR reception orthogonal BF weight vectors corresponding to the selected receive BF output components.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 30, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Tatsunori Obara, Satoshi Suyama, Jiyun Shen, Yukihiko Okumura
  • Patent number: 10097049
    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: March 31, 2016
    Date of Patent: October 9, 2018
    Assignee: uBeam Inc.
    Inventor: Meredith Perry
  • Patent number: 10097050
    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: March 31, 2016
    Date of Patent: October 9, 2018
    Assignee: uBeam Inc.
    Inventor: Meredith Perry
  • Patent number: 10094917
    Abstract: Circuitry for ultrasound devices is described. A multilevel pulser is described, which can provide bipolar pulses of multiple levels. The multilevel pulser includes a pulsing circuit and pulser and feedback circuit. Symmetric switches are also described. The symmetric switches can be positioned as inputs to ultrasound receiving circuitry to block signals from the receiving circuitry.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 9, 2018
    Assignee: Butterfly Network, Inc.
    Inventors: Kailiang Chen, Tyler S. Ralston, Keith G. Fife
  • Patent number: 10091694
    Abstract: In some embodiments a pairing system is configured to obtain first fingerprint data from a media playback device operating on a first network and second fingerprint data from a mobile device operation on the second network. The pairing system can, based on the fingerprint data, determine whether to pair the media playback device on the first network to the mobile device on the second network. The first and second fingerprint data may be generated during an interaction between the media playback device and the mobile device. In one embodiment, the pairing system creates a data conduit for connecting the media playback device on the first network to the mobile device on the second network.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: October 2, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventor: Matthew Bennion
  • Patent number: 10078003
    Abstract: A sensor device includes a communication transmitter configured to transmit a sensor device identifier. The sensor device includes a communication receiver configured to receive a sensor configuration associated with the sensor device identifier. The sensor device includes an interrogation signal transmitter configured to transmit an interrogation signal based at least in part on the received sensor configuration to determine an identifier associated with an amount of content included in a container engaged by the sensor device.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: September 18, 2018
    Assignee: Nectar, Inc.
    Inventors: Prabhanjan C. Gurumohan, Aayush Phumbhra
  • Patent number: 10066962
    Abstract: A method includes receiving an output signal from a sensor, recovering a noise signal from the output signal, comparing the noise signal with a stored baseline noise signature, and reporting authentication of the sensor if the comparison is within a pre-determined error limit. A sensor authentication apparatus, comprises a processor and a memory operably coupled with the processor. Instructions, when executed, cause the processor to separate a noise signal from a measured signal, and detect a noise signature match by comparing the noise signal with at least one stored baseline noise signature associated with the sensor. A sensor authentication system comprises a sensor authentication unit and a data acquisition unit. At least one of the sensor authentication unit and the data acquisition unit is configured to compare a noise signal with a baseline noise signature to authenticate the at least one sensor from among a plurality of sensors.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 4, 2018
    Assignee: Battelle Energy Alliance, LLC
    Inventors: John M. Svoboda, Mark J. Schanfein
  • Patent number: 10064601
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment include a transmitter/receiver, a signal processor, and an image generator. The transmitter/receiver causes an ultrasonic probe to transmit on each scanning line at least three ultrasonic pulses, the three ultrasonic pulses being: a first ultrasonic pulse including at least one frequency component and being transmitted with a first phase; a second ultrasonic pulse including the frequency component and being transmitted with a second phase different from the first phase by 180 degrees; and a third ultrasonic pulse including the frequency component and being transmitted with a third phase different from the first phase and the second phase by 90 degrees and generates a plurality of reception signals corresponding to the respective ultrasonic pulses. The signal processor combines the plurality of the reception signals and generates a composite signal. The image generator generates ultrasonic image data.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: September 4, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takeshi Fukasawa, Tetsuya Kawagishi, Akihiro Kakee, Makoto Hirama
  • Patent number: 10044384
    Abstract: A data transmission terminal according to the present invention comprises: a communication unit which performs communication with a server; a noise collection unit which collects a peripheral noise; a data transmission unit which transmits data to a data reception terminal through an audible frequency band; and a control unit which analyzes the collected noise to generate a noise analysis result and controls the communication unit to transmit the noise analysis result to the server.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 7, 2018
    Assignee: SK PLANET CO., LTD.
    Inventors: Jong Il Kim, Ki Cheol Kim
  • Patent number: 10019564
    Abstract: Pairing data associated with a second device may be received at a first device. The pairing data may be received from a server. A first authentication proof may be generated based on the pairing data received from the server. A second authentication proof may be received from the second device. Furthermore, an authentication status of the second device may be updated based on a comparison of the first authentication proof that is based on the pairing data received from the server and the second authentication proof that is received from the second device.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: July 10, 2018
    Assignee: Cryptography Research, Inc.
    Inventors: Benjamin Che-Ming Jun, Matthew Evan Orzen, Joel Patrick Wittenauer, Steven C. Woo
  • Patent number: 10015589
    Abstract: A telephone includes at least two microphones and a circuit for processing audio signals coupled to the microphones. The circuit processes the signals, in part, by providing at least one statistic representing maximum normalized cross-correlation of the signals from the microphones, doaEst, dirGain, or diffGain and comparing the at least one statistic with a threshold for that statistic. At least one of noise reduction and speech enhancement is controlled by an indication of near-field sounds in accordance with the comparison. Indication of near-field speech can be further enhanced by combining statistics, including a statistic representing inter-microphone level difference, each of which have their own threshold. dirGain and diffGain are derived from signals incident upon the microphones such that the desired near-field signal is not suppressed.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 3, 2018
    Assignee: Cirrus Logic, Inc.
    Inventor: Samuel Ponvarma Ebenezer
  • Patent number: 9973010
    Abstract: A control circuit, resonant circuit, electronic device, control method, control program, and a semiconductor element, which enable a circuit to be measured and tuned within a short time even in consideration of a time constant when a control voltage is applied to a variable capacitance capacitor. A control circuit for a variable capacitance capacitor includes: a digital-analog converter that outputs a control voltage consisting of a variable DC voltage; the variable capacitance capacitor that has a capacitance varying with an application of the control voltage; a phase detector that acquires a characteristic of a circuit containing the variable capacitance capacitor; an analog-digital converter that subjects an analog signal from the phase detector to a digital conversion; a comparing section that compares a target value with a detected value; and a control section that sets the control voltage for the digital-analog converter on the basis of the comparison result.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 15, 2018
    Assignee: DEXERIALS CORPORATION
    Inventor: Masayoshi Kanno
  • Patent number: 9972357
    Abstract: An audio and video synchronizing perceptual model is described that is based on how a person perceives audio and/or video (e.g., how the brain processes sound and/or visual content). The relative emotional impact associated with different audio portions may be employed to determine transition points to facilitate automatic synchronization of audio data to video data to create a production that achieves a particular overall emotional effect on the listener/viewer. Various processing techniques of the perceptual model may utilize perceptual characteristics within the audio portions to determine a transition point for automatic synchronization with video data.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: May 15, 2018
    Assignee: ADOBE SYSTEMS INCORPORATED
    Inventor: Peter Merrill
  • Patent number: 9949020
    Abstract: Systems and methods are disclosed, which include or present “soundscapes” in or for online mapping utilities. To obtain the data for such soundscapes, along with cameras for visual images, a microphone array can be mounted on a vehicle to record sounds along the streets travelled for linking to an online map. A speech recognition algorithm is used to identify private conversations and remove them from the recording. The systems and methods for accomplishing this task include use of an array of microphones mounted in a special pattern with special materials on top of the vehicle to record sounds as the vehicle travels through space and time. A set of signal processing algorithms is also used to process the microphone signals autonomously in real-time, allowing the operator to immediately review them for quality assurance.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: April 17, 2018
    Assignee: Ocean Acoustical Services and Instrumentation System
    Inventors: Charles Gedney, Vincent E. Premus, Philip Abbot
  • Patent number: 9900708
    Abstract: A hearing instrument includes: a microphone comprising a microphone transducer element, wherein the microphone transducer element is configured to provide a transducer signal in response to receipt of sound; a microphone amplification circuit configured to generate an amplified microphone signal based on the transducer signal; a control and processing circuit for receipt and processing of the amplified microphone signal according to a hearing loss of a user; and a level detector configured to detect a level of the amplified microphone signal; wherein the microphone amplification circuit is coupled to a switchable power supply, and wherein the switchable power supply is configured to selectively connect a first power supply voltage, having a first DC voltage level, or a second power supply voltage, having a second DC voltage level higher than the first DC voltage level, to the microphone amplification circuit based on the detected level of the amplified microphone signal.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: February 20, 2018
    Assignee: GN Hearing A/S
    Inventor: Martin Vinter
  • Patent number: 9891641
    Abstract: Equipment having a noise elimination function according to embodiments includes a signal generator configured to generate a signal in which a noise component other than thermal noise is discretely included, a noise detecting unit configured to detect the noise component other than the thermal noise discretely included in output of the signal generator, and a signal correcting unit configured to eliminate the noise component detected by the noise detecting unit from the output of the signal generator, and generation of noise other than thermal noise is detected, and a signal from which noise is reliably eliminated is generated.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: February 13, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yuji Satoh
  • Patent number: 9867050
    Abstract: A system and method of regulating access to a short-range wireless communications network using an ultrasonic audible signal includes: receiving a handheld wireless device identifier at a short-range wireless network from a handheld wireless device that is within a communication range of the short-range wireless network; determining that the handheld wireless device is authorized to access the short-range wireless network using the handheld wireless device identifier; and broadcasting an audio signal at an ultrasonic frequency through an audio system, wherein the audio signal includes information used by the handheld wireless device for authentication to the short-range wireless communications network in response.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: January 9, 2018
    Assignee: General Motors LLC
    Inventors: Aditya S. Kamini, Hassan Elnajjar, Nathaniel H. Williams, Marco Carnevale, Dwayne Crocker
  • Patent number: 9823158
    Abstract: A system for ultrasonic leak detection employs a number of ultrasonic signal generators, each of which include an ultrasonic transducer generating an ultrasonic signal and an audio transducer generating an audio signal in the frequency range of human hearing that is a replica of the ultrasonic waveform. The ultrasonic signal generators are activated and placed at selected locations within the enclosure to be tested. The operator can listen for the audio signal to verify operation and the output waveform type of the ultrasonic signal generators. A mobile ultrasonic leak detector can then be employed outside the enclosure to detect any leakage of the ultrasonic signal through the enclosure wall to identify any leak paths.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 21, 2017
    Assignee: Radiaulics, Inc.
    Inventors: Nikolaos I. Komninos, Arthur Ray Hughes
  • Patent number: 9810771
    Abstract: An adaptive finite impulse response (FIR) filter for filtering an I/Q data stream having a sample period. The FIR filter comprises at least one sample-period tap delay configured to delay the I/Q data stream by an integer multiple of the sample period of the I/Q data stream, and at least one sub-sample-period tap delay configured to delay the I/Q data stream by a non-integer multiple of the sample period of the I/Q data stream. A set of adaptive weights is provided and configured to weight samples of the delayed I/Q data stream. An adder is responsive to the weighted samples and configured to combine the weighted samples of the delayed I/Q data streams to generate a filtered I/Q data stream.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: November 7, 2017
    Assignee: Lockheed Martin Corporation
    Inventor: Richard Wasiewicz
  • Patent number: 9807631
    Abstract: A handheld wireless transmitter network analysis tool has a transceiver for detecting wireless signals from a transceiver of a smart device used in an automated process control. The tool has a processor with program modules for analyzing the spectrum of received wireless signals and noise. Another memory module includes a device description protocol program for reading tag and primary variable data carried by the wireless signals from smart device. The network tool displays the frequency and spectrum of the wireless signal from smart device, the tag and primary variables for device, the signal to noise ratio and the possible identity of the sources of noise.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: October 31, 2017
    Assignee: Fluke Corporation
    Inventor: Nikola Mrvaljevic
  • Patent number: 9793764
    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 6, 2015
    Date of Patent: October 17, 2017
    Assignee: uBeam Inc.
    Inventor: Meredith Perry
  • Patent number: 9755864
    Abstract: An apparatus for performing fractionally spaced adaptive equalization with non-integer sub-symbol sampling has an adaptive equalizer that receives a continuous stream of input data having a non-integer, fractional delay between consecutive samples at a non-integer, sub-symbol rate and outputs a stream of equalized data based on tap weights of taps of the adaptive equalizer that are spaced at an interval corresponding to the non-integer, sub-symbol rate. The tap weights are updated independently of the fractional delay between consecutive samples of the input data using an error signal. An equalizer output alignment component downstream of the adaptive equalizer aligns the stream of equalized data with a corresponding transmitted symbol.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: September 5, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD
    Inventors: Syed Faisal Ali Shah, Chuandong Li, Zhuhong Zhang
  • Patent number: 9729176
    Abstract: A data transmission terminal according to the present invention comprises: a communication unit which performs communication with a server; a noise collection unit which collects a peripheral noise; a data transmission unit which transmits data to a data reception terminal through an audible frequency band; and a control unit which analyzes the collected noise to generate a noise analysis result and controls the communication unit to transmit the noise analysis result to the server.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: August 8, 2017
    Assignee: SK PLANET CO., LTD.
    Inventors: Jong Il Kim, Ki Cheol Kim
  • Patent number: 9614658
    Abstract: In one embodiment, a method for determining self-interference in radio full duplex includes transmitting, by a first radio transmitter and an antenna, a first signal and receiving, by a first radio receiver and the antenna, a reflection of the first signal. The method also includes estimating a channel in accordance with the first signal and the reflection of the first signal to produce an estimated channel and determining a second signal in accordance with the estimated channel. Additionally, the method includes transmitting, by a second radio transmitter, the second signal and removing a self-interference component of the reflection of the first signal to produce a corrected signal.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: April 4, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Michael Moher
  • Patent number: 9602221
    Abstract: A system for data transmission for an explosive environment comprises an ultrasonic transmitter coupled to a Class 1 device disposed inside an explosive risk zone and adapted to generate an electric signal in response to a predetermined condition, the ultrasonic transmitter being configured to generate and transmit an ultrasonic signal in response to receiving the electric signal, an ultrasonic receiver disposed outside the explosive risk zone configured to receive the ultrasonic signal, and an uplink communication device adapted to communicate an alert to a remote operator in response to the ultrasonic receiver receiving the ultrasonic signal.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: March 21, 2017
    Assignee: ZACKAT, INC.
    Inventors: Mark A. Weinzierl, Scott D. Constien, Chek S. Poh
  • Patent number: 9592534
    Abstract: An ultrasonic transducer element chip includes a substrate, a plurality of ultrasonic transducer elements and a plate-shaped member. The substrate includes a partition wall section defining a plurality of openings arranged in an array pattern. A wall thickness of the partition wall section is smaller than a wall height of partition wall section. Each of the ultrasonic transducer elements is provided in each of the openings. The plate-shaped member is fixed on a surface of the substrate opposite to a surface of the substrate on which the ultrasonic transducer elements are provided. The plate-shaped member covers at least one of the openings in a plan view seen along a thickness direction of the substrate.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 14, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Tomoaki Nakamura, Jiro Tsuruno, Kanechika Kiyose
  • Patent number: 9560439
    Abstract: Methods, systems, and computer readable media for supporting source or listener directivity in a wave-based sound propagation model are disclosed. According to one method, the method includes computing, prior to run-time, one or more sound fields associated with a source or listener position and modeling, at run-time and using the one or more sound fields and a wave-based sound propagation model, source or listener directivity in an environment.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: January 31, 2017
    Assignee: The University of North Carolina at Chapel Hills
    Inventors: Ravish Mehra, Lakulish Shailesh Antani, Dinesh Manocha
  • Patent number: 9514763
    Abstract: An embodiment provides a method, including: accessing a tuned corrective mask stored in a memory device; forming, using a processor, a tuned acoustic echo cancellation mask utilizing the tuned-corrective mask; applying, using a processor, the tuned acoustic echo cancellation mask to a digital audio signal; and outputting an echo-cancelled audio signal. Other aspects are described and claimed.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: December 6, 2016
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventor: Robert James Kapinos
  • Patent number: 9513727
    Abstract: Processing an audio signal is disclosed. The audio signal is received from a sensor coupled to a touch input medium. An indication of an event where the touch input medium has been contacted at a location on the touch input medium is received. The event has been captured as an audio signal component of the received audio signal. At least a portion of the audio signal component is reduced from the audio signal.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 6, 2016
    Assignee: Sentons Inc.
    Inventors: Samuel W. Sheng, Shih-Ming Shih, Lapoe E. Lynn
  • Patent number: 9470779
    Abstract: A wideband sonar receiver is provided that includes: a selectable bandpass filter adapted to filter a received sonar signal to produce a filtered signal and a correlator adapted to correlate the baseband samples with baseband replica samples to provide a correlated signal. In addition, the wideband sonar receiver may include a shaping filter to shape unshaped received pulses. Finally, a variety of sonar processing algorithms are described with regard to reducing clutter and interference, target detection, and bottom detection.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: October 18, 2016
    Assignee: FLIR Systems, Inc.
    Inventors: Paul Stokes, Phil Webb
  • Patent number: 9439628
    Abstract: A method of controlling an output voltage of an ultrasound signal that is output by an ultrasound signal generating unit to a target object via a probe, the method including acquiring a target output voltage to be output by the probe to the target object and transmission conditions; acquiring property information regarding the probe; and controlling a voltage of the ultrasound signal output by the ultrasound signal generating unit based on the target output voltage, the transmission conditions, and the property information regarding the probe.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: September 13, 2016
    Assignee: SAMSUNG MEDISION CO., LTD.
    Inventors: Yoon-chang Lee, Tae-hyeong Oh
  • Patent number: 9384447
    Abstract: A system and method involve acoustic source localization using passive sonar and capitalizing on the sparse nature of a source location map (SLM). Two types of sparsity are exploited, namely sparsity in the support of the SLMs and sparsity in the innovations across consecutive SLMs. The first type is motivated by the desire to construct SLMs whose non-zero entries corresponded to locations where sources are present. The second type of sparsity is motivated by the observation that few changes occur in the support of consecutive SLMs. Per time instant, an SLM is obtained as the solution of a regularized least-squares problem, where the regularization terms are chosen to encourage the desired sparse structures in each SLM and the innovations. Each SLM may be obtained via a specifically-tailored, computationally-efficient proximal gradient algorithm.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: July 5, 2016
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventors: Pedro A. Forero, Paul A. Baxley
  • Patent number: 9354295
    Abstract: Systems, methods, and apparatus for matching pair-wise differences (e.g., phase delay measurements) to an inventory of source direction candidates, and application of pair-wise source direction estimates, are described.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 31, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Lae-Hoon Kim, Erik Visser
  • Patent number: 9331792
    Abstract: A receiver of the present invention includes a microphone, an unnecessary signal remover, and an FM detector. The microphone receives a transmission signal generated by frequency modulating a signal in a frequency band that is receivable by the microphone, on the basis of transmission data. The unnecessary signal remover removes unnecessary signal components by processing the received signal from the microphone. The FM detector restores transmission data by performing FM detection of the received signal from which unnecessary signal components were removed by the unnecessary signal remover.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: May 3, 2016
    Assignees: ADC TECHNOLOGY INC., SYSTEM DESIGN CORP.
    Inventors: Mitsuhiro Iida, Tsutomu Adachi, Tomoyoshi Yokoi, Shigeru Hayashi, Takezumi Kondo, Tatsumi Kuroda, Takeo Nozawa, Hiroshi Maekawa, Kenshi Takenaka, Tsuyoshi Kawanishi, Kenji Mizuno, Hideya Fujimaki