Signal Quality (e.g., Timing Jitter, Distortion, Signal-to-noise Ratio) Patents (Class 702/69)
  • Patent number: 11874657
    Abstract: An unmanned aerial vehicle (UAV) control system and a UAV control method are provided. The UAV control method includes: storing a reporting configuration by a UAV; communicatively connecting to the UAV and storing at least one historical status information corresponding to the UAV by a server; reporting to the server at least one current status information according to the reporting configuration by the UAV; calculating a variance between the at least one historical status information and the at least one current status information by the server; and updating the reporting configuration of the UAV according to the variance by the server.
    Type: Grant
    Filed: May 23, 2021
    Date of Patent: January 16, 2024
    Assignee: Far EasTone Telecommunications Co., Ltd.
    Inventors: Herman Chunghwa Rao, Chen-Tsan Yu, Hua-Pei Chiang, Chien-Peng Ho, Chyi-Dar Jang, Yao-Ming Chang, Che-Yu Liao
  • Patent number: 11860751
    Abstract: Test packets may be received at a design under test (DUT) from an automated test equipment (ATE) over a serializer/deserializer (SERDES) connection between the ATE and the DUT. The test packets may include test pattern data to test the DUT. The test pattern data may be applied to the DUT using a set of scan chains and test response data corresponding to the test pattern data may be obtained. The test response data may be received by a circuit in the DUT at irregular time intervals. Response packets may be sent to the ATE by the circuit in the DUT at regular time intervals, where the response packets may include a portion of the test response data (which may be encoded using an encoding technique), and where the response packets may be sent to ATE over the SERDES connection.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: January 2, 2024
    Assignee: Synopsys, Inc.
    Inventors: Abhijeet Samudra, Ajay Nagarandal, Anubhav Sinha, Luis M. Cruz, Milin Kaushik Raijada, Ramalingam Kolisetti, Naresh Thakur, Saransh Nagaich, Jatin Verma
  • Patent number: 11699459
    Abstract: According to one embodiment, a magnetic disk includes a disk, first and second heads which write data to the disk and read data from the disk, a first actuator includes the first head, a second actuator includes the second head, first and second controllers which control the first head, the second head, the first actuator and the second actuator, an auxiliary power supply which supplies power when power from a power supply is shut off, and a power supply detection unit which makes power supplied from the auxiliary power supply to the first controller higher than the power supplied from the auxiliary power supply to the second controller when shutoff of power from the power supply is detected.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: July 11, 2023
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Yuki Kawamitsu
  • Patent number: 11646602
    Abstract: A system for detecting the topology and phase information of an electrical power distribution system is provided. For example, the system includes a group of meters connected to an electrical power distribution system and can communicate with each other through local network connections such as a mesh network. Each of the meters is configured to generate and transmit voltage data to a correlator of the group of meters. The correlator calculates the correlations between each pair of meters in the group based on the voltage data received and further transmits the calculated correlations to a mapper through the mesh network. The mapper determines the topological or phase relationship between at least the group of meters based on the received correlations.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: May 9, 2023
    Assignee: Landis+Gyr Innovations, Inc.
    Inventors: Ruben E. Salazar Cardozo, David Decker
  • Patent number: 11626944
    Abstract: There are provided a data comparison unit that detects an FEC symbol error of a signal under test output from a DUT in accordance with an input of a jitter signal, an error counting unit that counts the number of detected FEC symbol errors for each codeword for each phase modulation amount, a codeword classification unit that classifies a plurality of codewords included in the signal under test into a plurality of groups based on the counted number of FEC symbol errors, a codeword number counting unit that counts the number of codewords in each group for each phase modulation amount, and a display control unit that controls a display of a first graph having a horizontal axis as the phase modulation amount and a vertical axis as a ratio of the number of codewords in each group, on a display screen.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: April 11, 2023
    Assignee: ANRITSU CORPORATION
    Inventor: Tatsuya Iwai
  • Patent number: 11604213
    Abstract: A method and system are provided for reducing noise in a time domain waveform of a signal under test (SUT). The method includes performing cross-correlation of multiple first complex signals and multiple second complex signals, respectively, from the SUT to provide multiple cross-correlated signals, respectively, where the cross-correlated signals have amplitude components and no phase components from the SUT, and where the first and second complex signals include uncorrelated noise, respectively. The method further includes determining an average of the cross-correlated signals to provide an average cross-correlated signal with reduced uncorrelated noise; obtaining a representative phase component from one of the first complex signals or the second complex signals; and combining the representative phase component with the average cross-correlated signal to provide a representative complex signal corresponding to the SUT with reduced uncorrelated noise.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: March 14, 2023
    Assignee: Keysight Technologies, Inc.
    Inventors: Steven Draving, Marlin E. Viss
  • Patent number: 11539355
    Abstract: Systems, methods, and devices are provided for a circuit for generating a pulse output having a controllable pulse width. Systems and methods may include a delay line having a plurality of stages. A delay per stage calculation circuit is configured to determine a per-stage delay of the delay line using a first clock input. A pulse generation circuit is configured to generate the pulse output using the delay line based on the per-stage delay using a second clock input, the second clock input having a lower frequency than the first clock input.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: December 27, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ruey-Bin Sheen, Ming Hsien Tsai, Chih-Hsien Chang, Tsung-Hsien Tsai
  • Patent number: 11451830
    Abstract: Techniques and tools for reducing latency in video encoding and decoding by constraining latency due to reordering of video frames, and by indicating the constraint on frame reordering latency with one or more syntax elements that accompany encoded data for the video frames. For example, a real-time communication tool with a video encoder sets a syntax element that indicates a constraint on frame reordering latency, which is consistent with inter-frame dependencies between multiple frames of a video sequence, then outputs the syntax element. A corresponding real-time communication tool with a video decoder receives the syntax element that indicates the constraint on frame reordering latency, determines the constraint on frame reordering latency based on the syntax element, and uses the constraint on frame reordering latency to determine when a reconstructed frame is ready for output (in terms of output order).
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: September 20, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Gary J. Sullivan
  • Patent number: 11435260
    Abstract: A vibration data collection device monitors vibration of a machine, generates original machine vibration waveform data based on the monitored vibration, and removes portions of the original machine vibration waveform data that do not indicate an occurrence of a vibration event related to a potential fault in the machine. The vibration data collection device then stores thinned waveform data that includes blocks of the original machine vibration waveform data and excludes the portions that have been removed. A data analysis computer generates a thinned waveform plot based on the thinned waveform data. In some embodiments, the thinned waveform plot includes the blocks of original machine vibration waveform data separated in time by gaps representing the portions that have been removed.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 6, 2022
    Assignee: Computational Systems, Inc.
    Inventors: Anthony J. Hayzen, Christopher G. Hilemon, John W. Willis
  • Patent number: 11307059
    Abstract: A life detection device of an encoder is used for the encoder including a scale and a head. The scale is housed in a scale frame. The head relatively moves along the scale to detect an amount of relative movement with the scale. The life detection device includes environmental condition detection means, life determination means, and informing means. The environmental condition detection means is configured to detect an environmental condition related to life detection in the encoder. The life determination means is configured to determine a life of a component constituting the encoder based on a detection result by the environmental condition detection means. The informing means is configured to inform the life based on a determination result by the life determination means.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 19, 2022
    Assignee: MITUTOYO CORPORATION
    Inventor: Miyako Mizutani
  • Patent number: 11280830
    Abstract: Provided is an apparatus including a generating section that generates an altered test candidate obtained by adding an alteration shortening an execution time of a test to a target test for testing a device under test; a test processing section that causes a test apparatus to perform the altered test candidate on the device under test; and a comparing section that compares an altered test result of the device under test resulting from the altered test candidate to a target test result of the device under test resulting from the target test; and a judging section that judges whether the target test can be replaced by the altered test candidate, based on the comparison result of the comparing section.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: March 22, 2022
    Assignee: ADVANTEST CORPORATION
    Inventor: Shunichi Kanamaki
  • Patent number: 11249114
    Abstract: A trigger method for triggering a measurement device on a signal pattern in a signal is provided. The trigger method comprises the steps of receiving the signal pattern, receiving the signal, computing a first cross-correlation of the signal pattern and the signal, and triggering the measuring device, based upon the first cross-correlation.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: February 15, 2022
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Bendix Koopmann, Johann Tost
  • Patent number: 11231459
    Abstract: An apparatus and method for analyzing phase noise in a signal. A plurality of signal samples, each signal sample representing a value of phase noise in a signal-under-test at a corresponding offset frequency, and filter data representing filter characteristics on a first side of a spectrum boundary, are used to derive filtered signal samples. A measure of noise is derived from the filtered signal samples. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: January 25, 2022
    Assignee: JitterLabs LLC
    Inventor: Gary Giust
  • Patent number: 11121734
    Abstract: A passive intermodulation elimination method, an apparatus, and a base station are disclosed. The method includes: receiving, by a network device, N pieces of backhauled information, where one piece of the backhauled information includes initial phase information of each carrier on one transmit channel, and N is an integer greater than or equal to 1; and eliminating, by the network device, a PIM of a received signal on a receive channel on the network device based on the N pieces of backhauled information.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: September 14, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yong Jiang, Jia Lv, Yuxiang Xiao
  • Patent number: 11029388
    Abstract: A method is described that, according to one exemplary embodiment, involves the following: generating a first radio frequency (RF) signal by a first RF oscillator and a second RF signal by a second RF oscillator, mixing the first RF signal and the second RF signal by a mixer to generate a mixer output signal, digitizing the mixer output signal to generate a digitized signal, and calculating an estimate for a power spectral density of the mixer output signal from the digitized signal. Based on the estimate for the power spectral density of the mixer output signal, an estimate for a noise power spectral density characterizing the noise contained in the first and the second RF signals is calculated.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: June 8, 2021
    Inventors: Alexander Melzer, Michael Gerstmair, Mario Huemer, Alexander Onic, Christian Schmid, Rainer Stuhlberger
  • Patent number: 11031927
    Abstract: Systems, methods, and devices are provided for a circuit for generating a pulse output having a controllable pulse width. Systems and methods may include a delay line having a plurality of stages. A delay per stage calculation circuit is configured to determine a per-stage delay of the delay line using a first clock input. A pulse generation circuit is configured to generate the pulse output using the delay line based on the per-stage delay using a second clock input, the second clock input having a lower frequency than the first clock input.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: June 8, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ruey-Bin Sheen, Ming Hsien Tsai, Chih-Hsien Chang, Tsung-Hsien Tsai
  • Patent number: 10868617
    Abstract: A band division timing adjustment unit aligns timings of a plurality of signals, which are generated by dividing a received signal according to a plurality of frequency bands, in a time domain and combines the plurality of signals for which the timings have been aligned. A chromatic dispersion compensation unit compensates chromatic dispersion of an output signal of the band division timing adjustment unit for each of the plurality of frequency bands.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: December 15, 2020
    Assignees: NTT Electronics Corporation, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Mitsuteru Yoshida, Etsushi Yamazaki, Yoshiaki Kisaka, Masahito Tomizawa
  • Patent number: 10866311
    Abstract: A distance measuring device according to an embodiment includes a light source, an irradiation optical system, a light-receiving optical system, a sensor, an extractor, an adjuster, a signal generator, and a distance measurer. The light source intermittently emits laser light. The irradiation optical system reflects the laser light. The light-receiving optical system receives reflected light of the laser light via the mirror. The sensor includes a plurality of light receiving elements. The extractor extracts light receiving elements used for measurement of a distance to the measurement target object. The adjuster adjusts, according to an amplification factor corresponding to the light receiving elements extracted by the extractor, signal values of the electric signals of the light receiving elements. The signal generator generates time-series signals for measurement on the basis of the electric signals adjusted by the adjuster. The distance measurer measures the distance to the measurement target object.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: December 15, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Hiroshi Kubota, Nobu Matsumoto, Yutaka Oota, Saki Sato
  • Patent number: 10769338
    Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) a real capacitor, whose value exactly emulates the value of the quantum constant ? termed a Planck capacitor; 2) a ‘quantum admittance’ element, which has no classical equivalent, but which can be emulated by approximately 18 transistors of a coupled transconductor system; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple quantum admittances to each other under the control of an input. These four parts can be composed together to create arbitrary discrete-state, traveling-wave, spectral, or other quantum systems.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: September 8, 2020
    Assignee: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventor: Rahul Sarpeshkar
  • Patent number: 10746649
    Abstract: A method for determining a corrosion rate includes receiving an input signal including corrosion data from a sensor. A signal-to-noise ratio (SNR) and a type of noise is determined from the input signal. A corrosion rate computation method is selected based on the SNR and the type of noise. The corrosion rate is determined, using a processor, based on a selected corrosion rate computation method.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: August 18, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levente I. Klein, Dennis G. Manzer
  • Patent number: 10728427
    Abstract: Described herein are apparatus, systems and methods for synchronizing a reference video with an input video. A method comprises extracting first motion data from the input video having a first set of frames, extracting second motion data from the reference video having a second set of frames, computing motion descriptors for each frame in the first set of frames and the second set of frames based on the first and second motion data, respectively, and non-linearly mapping the first set of frames to the second set of frames based on the motion descriptors, respectively.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 28, 2020
    Assignee: Disney Enterprises, Inc.
    Inventors: Jean-Charles Bazin, Alexander Sorkine-Hornung
  • Patent number: 10656270
    Abstract: This object detection device is provided with: an output unit; a plurality of detection units; a data acquisition unit; and an object information confirmation unit. The output unit outputs measurement light Lm towards an object. Each of the plurality of detection units detects, as a signal representing the distance to the object present in an observed area and the shape of the object, the reflected light generated as a result of the measurement light being reflected by the object. The data acquisition unit acquires detection signal waveforms W representing changes in the intensities of second signals over time. The object information confirmation unit confirms the range of the presence of the object by determining that any two or more of the detection units correspond to the same object, or correspond to different objects, on the basis of the detection signal waveforms.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 19, 2020
    Assignee: OMRON Corporation
    Inventor: Yukiko Yanagawa
  • Patent number: 10603114
    Abstract: The present invention proposes an electromagnetic (EM) tracking technology that can be used to track devices with embedded EM sensors over time. If these objects move too fast, tracking signals are lost because of the motion induced potential differences. It is therefore proposed to add a processing mechanism incorporating additional processing algorithms to enable tracking of the EM sensors. An embodiment of the invention is for performing biopsies using a biopsy gun. The additional processing algorithms incorporate dedicated prior information on the expected signal obtained from the embedded EM sensor and are introduced to allow processing the signals from the moving sensors. The prior information can be incorporated in a heuristic or statistical model to process the EM signal.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: March 31, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Guillaume Leopold Theodorus Frederik Hautvast, Gernot Joseph Pieter Marie Eggen
  • Patent number: 10564742
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Ki Duk Kim, Sung Yong Cho, Eun Jung Kim
  • Patent number: 10459032
    Abstract: A test switch signal analyzer comprising: an analyzer hub operably couplable to a test switch base that includes test switch conductors; signal probe(s) couplable to the analyzer hub and to the plurality of test switch conductors when the analyzer hub is coupled to the test switch base, a signal processing unit coupled to the analyzer hub; the signal processing unit, the analyzer hub, and at least a portion of the at least one signal probe being positionable within a test switch cover that mates with the test switch base when the signal probe is coupled to the test switch conductor(s) and the test switch cover is secured to the test switch base.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: October 29, 2019
    Assignee: FISCHER BLOCK, INC.
    Inventors: Margaret Wolfe, Gregory Wolfe
  • Patent number: 10436882
    Abstract: Embodiments of the present disclosure propose analog-to-digital conversion (ADC) systems particularly suitable for Light Detection and Ranging (LIDAR) implementations. An exemplary proposed ADC system is configured to determine whether an absolute value of an analog value is greater than a threshold, and, upon positive determination, assign a predetermined digital value as a digital value corresponding to the analog value, without proceeding with the analog-to-digital conversion of the analog value. Because the ADC system only proceeds with the analog-to-digital conversion, using an ADC, when the input analog value is smaller than the threshold, and otherwise the input analog value is simply assigned some predefined digital value, design complexity and power consumption of the system may be significantly reduced, compared to conventional ADCs used in LIDAR applications.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 8, 2019
    Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANY
    Inventors: Libo Meng, Jun Mo, Yu Liu, Wei Wang, Ke Yun
  • Patent number: 10122361
    Abstract: An electronic device includes a transmission interface, a driving circuit, a receiving circuit, a sampling circuit, a detecting circuit, a timing control circuit and a processing circuit. The transmission interface is for connecting to another electronic device via a connecting cable. The driving circuit outputs a backward signal via the transmission interface to the another electronic device. The receiving circuit receives a received signal including the backward signal and a forward signal from the transmission interface. The sampling circuit samples the received signal to obtain a plurality of sample results. The detecting circuit detects transitions of the sample results to obtain a plurality of detection results. The processing circuit generates a control signal according to the detection results, and adjusts a time point at which the driving circuit outputs the backward signal through the timing control circuit.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: November 6, 2018
    Assignee: MSTAR SEMICONDUCTOR, INC.
    Inventors: Wei-Ling Chen, Chun Wen Yeh, Yan-Cheng Lin
  • Patent number: 10090938
    Abstract: For wireless cellular communications, a “smart” multi-band combiner system has a multi-band combiner and a passive inter-modulation (PIM) detection sub-system. The multi-band combiner combines multiple transmit signals in different downlink frequency bands into a single, multi-band transmit signal for transmission from a cell tower antenna. The PIM detection sub-system characterizes the frequency components in the multi-band transmit signal to predict PIM products and determine if any predicted PIM products might interfere with any receive signals in any uplink frequency bands. If so, the PIM detection sub-system generates a signal indicating the presence of such predicted interfering PIM products, and the system installer and/or the network administrator can take remedial action to prevent the PIM products from interfering with user communications.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: October 2, 2018
    Assignee: CommScope Italy, S.r.l.
    Inventors: Sammit A. Patel, Ray K. Butler, John W. Brunner, Xiaohua Hou
  • Patent number: 10068626
    Abstract: A clock timing adjust circuit is incorporated in a clocked integrated circuit to detect an input clock frequency and to adjust the timing latency of an internal control signal for accessing a memory element in the clocked integrated circuit. The clock timing adjust circuit introduces an adjustable timing latency to an internal control signal derived from the command signal. The clock timing adjust circuit operates to adjust the timing latency of the control signal to cause clock based operations to either be advanced or delayed by one or more clock cycles in response to the clock frequency detection. In one embodiment, the clock timing adjust circuit includes a clock frequency detect circuit and a latency adjust circuit. The clock timing adjust circuit can operate at both high and low clock frequencies to ensure that undesired data collision events are obviated without introducing unnecessary delays.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: September 4, 2018
    Assignee: Integrated Silicon Solution, Inc.
    Inventors: Steven Eaton, Matthew Manning
  • Patent number: 9973276
    Abstract: An apparatus includes a receiver configured to receive a signal that has traveled an optical transmission line without returning output from an optical transmitting device and synchronize with the optical transmitting device in order to demodulate the signal; a dispersion compensator configured to compensate for wavelength dispersion caused by transmission of the signal; an acquisition circuit configured to acquire a transmitting timing at which the signal has been transmitted from the optical transmitting device; a calculation circuit configured to calculate a transmission time period from the optical transmitting device to the receiver from the transmitting timing and a receiving timing at which the signal has been received with the receiver; and an amount setting circuit configured to adjust a dispersion compensation amount of the dispersion compensator in accordance with the transmission time period.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: May 15, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Yutaka Kai, Tomoo Takahara, Toshiki Tanaka, Masato Nishihara, Ryou Okabe
  • Patent number: 9955215
    Abstract: The present technology concerns cell phones and other portable devices, and more particularly concerns use of such devices in connection with media content (electronic and physical) and with other systems (e.g., televisions, digital video recorders, and electronic program directories). Some aspects of the technology allow users to easily transfer displayed content from cell phone screens onto a television screens for easier viewing, or vice versa for content portability. Others enable users to participate interactively in entertainment content, such as by submitting plot directions, audio input, character names, etc., yielding more engaging, immersive, user experiences. Still other aspects of the technology involve a program directory database, compiled automatically from information reported by network nodes that watch and identify content traffic passing into (and/or out of) networked computers. By identifying content resident at a number of different repositories (e.g.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: April 24, 2018
    Assignee: Digimarc Corporation
    Inventors: Bruce L. Davis, Tony F. Rodriguez
  • Patent number: 9729199
    Abstract: A method is for processing an analog signal coming from a transmission channel. The analog signal may include a useful signal modulated on a sub-set of carriers. The method may include analog-to-digital converting of the analog signal into a digital signal, and synchronization processing the digital signal. The synchronizing may include determining, in a time domain, a limited number of coefficients of a predictive filter from an autoregressive model of the digital signal, and filtering the digital signal in the time domain by a digital finite impulse response filter with coefficients based upon the limited number of coefficients to provide a filtered digital signal. The method may include detecting of an indication allowing a location in the frame structure to be identified, using the filtered digital signal and a reference signal.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: August 8, 2017
    Assignee: STMICROELECTRONICS (ROUSSET) SAS
    Inventors: Mark Wallis, Yoann Bouvet, Pierre Demaj
  • Patent number: 9690930
    Abstract: Sequences of discrete events, such as clicks on a website, are evaluated for periodic behavior, a period is calculated, and the sequence is scored to determine the confidence that the sequence really exhibits periodicity. The random variations on the timing of the discrete events due to transmission delays or other factors may be reduced or eliminated from the evaluation. An apparatus for performing the method of evaluation may include a computer programmed to carry out the method.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: June 27, 2017
    Assignee: EMC IP Holding Company LLC
    Inventors: Eugene Gulko, Andreas Wittenstein, Richard Chiles
  • Patent number: 9685173
    Abstract: A system and method for non-intrusive acoustic parameter estimation is included. The method may include receiving, at a computing device, a first speech signal associated with a particular user. The method may include extracting one or more short-term features from the first speech signal. The method may also include determining one or more statistics of each of the one or more short-term features from the first speech signal. The method may further include classifying the one or more statistics as belonging to one or more acoustic parameter classes.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: June 20, 2017
    Assignee: Nuance Communications, Inc.
    Inventors: Dushyant Sharma, Patrick Naylor, Pablo Peso Parada
  • Patent number: 9651705
    Abstract: A first broadband magnetic field is induced at a first transmitter position in a well bore drilled through a formation. A first formation magnetic field induced by the first broadband magnetic field is detected at a first receiver position. A second formation magnetic field induced by the first broadband magnetic field is detected at a second receiver position. A second broadband magnetic field is induced at a second transmitter position in the well bore. A third formation magnetic field induced by the second broadband magnetic field is detected at the first receiver position. A fourth formation magnetic field induced by the second broadband magnetic field is detected at the second receiver position. A formation property is computed using a function of the first, second, third, and fourth formation magnetic fields, wherein the function reduces the effect of a casing on the computation of the formation property.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 16, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Dagang Wu, Michael S. Bittar
  • Patent number: 9437203
    Abstract: Provided is a system, method, and computer program product for improving the quality of speech reproduction in wireless applications where the received speech frames are subject to transmission and packet losses. The speech decoding process is dynamically delayed by at least one frame period in order to perform additional error correction and concealment techniques during times when the wireless link quality if below a predetermined threshold. The wireless link is monitored and if the link quality falls below a predetermined threshold, the decoding process is delayed by at least one frame period so that one or more error correcting techniques can be performed to increase the quality of the reconstructed speech.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: September 6, 2016
    Assignee: QOSOUND, INC.
    Inventor: Huan-Yu Su
  • Patent number: 9429603
    Abstract: A method for detecting at least two amplitude-modulated transmitted signals contained in a received signal within the same frequency channel with respectively different frequency displacements, which determines from the received signal a modified received signal by means of a nonlinear signal processing. Following this, the spectrum of the modified received signal is determined by means of Fourier transform, and at least two transmitted signals contained in the received signal are detected if at least two first spectral lines each associated with carrier signals are significantly distinguishable within the determined spectrum from spectral components associated with noise signals and payload signals.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: August 30, 2016
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventor: Thorben Detert
  • Patent number: 9189752
    Abstract: Described is a machine learning system for binary classifications. The system improves interpolation schemes used in isotonic regressions by providing a continuous function that also is monotonic. The system outputs a probability estimating function on a signal space that is both monotonic and varies continuously with the input signals. More specifically, described is an interpolation function that is continuous and piecewise linear on Delaunay simplices. Accordingly, the resulting probability estimation function may more accurately match actual probabilities especially when training data is sparse.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 17, 2015
    Assignee: Google Inc.
    Inventor: Thomas Fischbacher
  • Patent number: 9119249
    Abstract: A light-emitting diode (LED) driving circuit includes an LED control circuit and a power stage circuit. The LED control circuit shifts an input pulse width modulation (PWM) signal toward a higher frequency direction in a frequency domain to generate an output PWM signal having a duty cycle substantially the same as a duty cycle of the input PWM signal. The power stage circuit outputs an LED driving current according to the output PWM signal.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: August 25, 2015
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Hsing-Chien Yang, Wen-Hsin Cheng, Ying-Hao Hsu, Lan-Ting Hsu, Tsung-Hau Chang
  • Patent number: 9074932
    Abstract: An object of the invention is to automatically remove noise out of an input spectrum data while rounding in spectral shape is being suppressed. The spectrum data correction system wherein a noise quantity is detected on the basis of a difference in value between an extremal point of measurement data-blocks making up input spectrum data, and a mean value of measurement data-blocks in the vicinity of the extremal point, and a count of moving-average points of measurement data-blocks subjected to moving average processing is controlled according to the noise quantity, the spectrum data correction system comprises means for using an optical power, detected by a photo-detector of an optical spectrum analyzer, as the measurement data-block, thereby controlling the count of the moving-average points of the measurement data-blocks according to magnitude of a signal level of the measurement data-block.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: July 7, 2015
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Manabu Kojima, Gentarou Ishihara
  • Patent number: 9048943
    Abstract: A method is provided for communicating signals at a low power level in an electromagnetic interference (EMI) environment. A first device transmits a modulated signal having a first carrier frequency, including the encoded information via a hardwire transmission medium. In one aspect, the power level of the modulated signal can be adjusted to minimize power consumption or reduce the generation of EMI. The modulated signal may be in one of the following formats: frequency modulation (FM) or phase modulation (PM) to name a few examples. A second device including a logarithmic detector amplifier (LDA) demodulator circuit receives the signal, which may be mixed with EMI. The LDA demodulator circuit amplifies the modulated signal, without amplifying the EMI, to supply a demodulated baseband signal, which may be an n-ary digital signal, or an audio signal. A low-power, noise insensitive communication channel is also provided.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 2, 2015
    Assignee: DockOn AG
    Inventors: Patrick Rada, Forrest Brown
  • Patent number: 9037431
    Abstract: An apparatus for computing a coupling noise voltage occurring in a plurality of cells arranged on a plurality of word lines and a plurality of bit lines in a flash memory device includes: a coupling ratio computing unit and a coupling voltage computing unit. The coupling ratio computing unit can compute coupling ratios between a cell and neighboring cells wherein each of the coupling ratios have a value such that the difference between two coupling noise voltage values is minimized. The coupling voltage computing unit computes the coupling noise voltage value occurring in the cell using the computed coupling ratios.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: May 19, 2015
    Assignee: Foundation of Soongsil—University Industry Cooperation
    Inventors: Jae-Jin Lee, Dong-Hyuk Park
  • Patent number: 9026391
    Abstract: A distortion estimation apparatus for estimating distortion includes a feedback element, a nonlinearity determiner, and a distortion simulator. The feedback element provides a feedback signal derived from a distorted output signal of the distorting element. A signal processing quality of the feedback element is lower than an associated signal property of the distorted output signal. The nonlinearity determiner receives the feedback signal and an input signal to the distorting element or a signal derived from the input signal. The nonlinearity determiner determines an estimated transmission characteristic of the distorting element by relating signal properties of the feedback signal and the input signal or the signal derived from the input signal. The distortion simulator estimates the distortion caused by the distorting element based on the input signal or the signal derived from the input signal and the estimated transmission characteristic.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: May 5, 2015
    Assignee: Intel Mobile Commnications GmbH
    Inventors: Bernhard Sogl, Alexander Belitzer, Andrea Camuffo, Jan-Erik Mueller
  • Patent number: 9014996
    Abstract: A system to aggregate, filter, and share energy data for analysis receives first data associated with a first electrical circuit where the first data has a first protocol. The system samples the first data at a first sampling rate to generate first digital data where the first sampling rate is substantially continuous. Further, the system transmits at a reporting rate that is decoupled from the first sampling rate at least the first digital data over a network having a third protocol that is different from the first protocol. The network can be accessed by wired or wireless access and includes one or more servers in cloud configuration.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: April 21, 2015
    Assignee: eXcorda, LLC
    Inventors: Michel Roger Kamel, Paul W. Donahue
  • Patent number: 8988495
    Abstract: A method for controlling an image display apparatus includes determining a type of a video signal included in an input signal, determining whether three-dimensional (3D) format information is included in the input signal, if the video signal is a 3D video signal, requesting 3D format information about the video signal to a server that stores 3D format information, if the input signal does not include the 3D format information about the video signal, and processing, upon receipt of 3D format information from the server in response to the 3D format information request, the video signal according to the 3D format information and displaying a 3D image based on the processed video signal.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: March 24, 2015
    Assignee: LG Eletronics Inc.
    Inventor: Jeongsim Kim
  • Patent number: 8982938
    Abstract: Methods and test equipment for measuring jitter in a Pulse Amplitude Modulated (PAM) transmitter. Under one procedure, a first two-level PAM signal test pattern is used to measure clock-related jitter separated into random and deterministic components, while a second two-level PAM signal test pattern is used to measure oven-odd jitter (EOJ). Under another procedure, A four-level PAM signal test pattern is used to measure jitter-induced noise using distortion analysis. Test equipment are also disclosed for implementing various aspects of the test methods.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 17, 2015
    Assignee: Intel Corporation
    Inventor: Adee O. Ran
  • Patent number: 8982218
    Abstract: A system and method for detecting media source quality are provided. The system includes a data store comprising a computer readable medium storing a program of instructions for the detection of media source quality; a processor that executes the program of instructions; a video data receiver to receive video raw data, the video raw data corresponding to an uploaded and transcoded video; a video improver to apply a video improvement technique to the received video raw data to produce a modified version of the video raw data; and a video quality assessor to compare the received video raw data and the modified version of the video raw data, and based on the modified version of the video raw data improving on a factor associated with the video improvement technique, the video quality assessor indicates a phenomenon affecting the quality of the uploaded and transcoded video.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: March 17, 2015
    Assignee: Google Inc.
    Inventors: Meng Wang, Sang-Uok Kum, Chen Wu
  • Patent number: 8965726
    Abstract: A sensor circuit enables detection of DC offset in a sensor output signal. The sensor circuit includes a sensor that generates a sensor output signal corresponding to a physical signal coupled to an input of the sensor, and a modulator that generates a modulation signal, the modulator being coupled to the sensor to modulate a physical parameter of the sensor and to enable a DC offset to be separated from the sensor output signal. To enable the circuit to measure the DC offset even though the sensor output signal is inversely proportional to the output signal, the circuit includes a feedback circuit configured to generate a feedback signal. The feedback signal is coupled to the input of the sensor to enable the physical parameter of the sensor to be modulated without modulating a portion of the sensor output signal attributable to the physical signal being converted to an electrical signal by the sensor.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: February 24, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Pedram Lajevardi, Vladimir Plamenov Petkov, Christoph Lang
  • Patent number: 8918295
    Abstract: A distributed reflectometry device for diagnosing a network is disclosed. According to one aspect, the device includes at least one transmission line and several reflectometers connected to the network. A transmission portion of the device includes a first memory configured to store at least one test signal and a second memory configured to store weighting coefficients. The transmission portion may also include a first multiplier of a test signal (s) with a coefficient ?m, for producing a measurement m and a digital-to-analog converter connected to the line. A reception portion of the device includes an analog-to-digital converter configured to receive a signal from the line and provide a vector for the measurement m, a second multiplier of configured to multiply the vector with the coefficient ?m, an averaging module, and a post-processing and analysis module.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: December 23, 2014
    Assignee: Commissariat à l'énergie Atomique et aux Énergies alternatives
    Inventor: Adrien Lelong
  • Patent number: 8892380
    Abstract: Methods are described for measuring data in a test setup including an impedance tuner. In an exemplary embodiment, the data is data for measuring noise parameters. The data is measured versus a sweep parameter for one tuner state at a time.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: November 18, 2014
    Assignee: Maury Microwave, Inc.
    Inventor: Gary R. Simpson