By Filtering (e.g., Digital) Patents (Class 375/350)
  • Patent number: 10742302
    Abstract: A wireless communication device for transceiving signals by using carrier aggregation is provided. The wireless communication device includes a first antenna configured to transmit a first signal to an outside of the wireless communication device or receive a second signal from the outside; a first transmitter connected to the first antenna via a first node and configured to generate the first signal by combining plural transmitting carrier signals received over a plural transmitting carriers; and a first receiver connected to the first antenna via the first node and configured to divide the second signal into a plural receiving carrier signals received over a plural receiving carriers. The first receiver includes a first receiving amplifier commonly connected to a plural carrier receivers configured to amplify the second signal received from the first antenna and to divide the receiving carrier signals, respectively.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: August 11, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chia-Hsin Wu, Thomas Byunghak Cho, Tae-wan Kim, Joung-hyun Yim, In-young Choi
  • Patent number: 10743203
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to minimizing interference by controlling beam width of a wireless device. In certain aspects, a method of minimizing interference by controlling beam width of a wireless device, such as a user equipment (UE), includes configuring antenna elements of the UE to communicate in a serving cell using a first beam, monitoring a channel quality metric in the serving cell, and re-configuring the antenna elements of the UE to perform mobility measurements of one or more neighboring cells using a second beam broader than the first beam if the metric falls below a threshold value.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: August 11, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sameh Guirguis, Kausik Ray Chaudhuri, Ming Yang, Atanu Halder
  • Patent number: 10727880
    Abstract: Otherwise incompatible crest factor reduction (CFR) and cable tilt compensation can be used together, such as in a cable television or other cable communication system having a frequency-dependent signal loss at higher frequencies. The CFR can be used to limit or reduce peaks of signals provided to a power amplifier, while additional tilt reference and tilt equalizer circuits are included to address deleterious peak regrowth effects that may otherwise arise by using conventional CFR together with cable tilt compensation.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: July 28, 2020
    Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
    Inventors: Patrick Pratt, David Jennings
  • Patent number: 10725682
    Abstract: A memory module includes a plurality of semiconductor memory devices associated with a same module board. The plurality of semiconductor memory devices configured to simultaneously perform a training operation, the plurality of semiconductor memory devices including a reception interface circuit configured to perform the training operation to search for selected equalization coefficients of an equalizer based on a training pattern from a memory controller, and transmit a training information signal to the memory controller in a training mode in response to a training command from the memory controller, the training information signal including the selected equalization coefficients.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: July 28, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wang-Soo Kim, Jung-Hwan Choi, Ki-Duk Park, Yoo-Chang Sung, Jin-Sung Youn, Chang-Kyo Lee, Ju-Ho Jeon, Jin-Seok Heo
  • Patent number: 10720999
    Abstract: A method and apparatus of a device that determines transmit and receive skew times between pairs of lanes of an electrical interface of a network element is described. In an exemplary embodiment, the device couple an optical loopback to transmit and receive interfaces of an optical interface, the optical loopback capable of transporting a first optical signal with a plurality of polarization and quadrature combinations. In addition, the device determines the receive skew time by transmitting a second optical signal on the optical loopback with one of the plurality of polarization and quadrature combinations. Furthermore, the device determines the transmit skew time by, tuning transmission delays on the transmit interface for a third optical signal with components corresponding to a pair of the plurality of polarization and quadrature combinations such that the third optical signal is recoverable on the receive interface.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 21, 2020
    Assignee: Arista Networks, Inc.
    Inventor: Andrew Ahern Tamoney, Jr.
  • Patent number: 10720936
    Abstract: A receiver having analog-to-digital converters (ADC) is disclosed. The ADCs may be reconfigured based on the data rate of the receiver. For example, more portions of each time-interleaved ADC may be enabled to support a higher data rate of the receiver and less portions of the ADCs may be used to support a lower data rate of the receiver.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: July 21, 2020
    Assignee: eTopus Technology Inc.
    Inventor: Danfeng Xu
  • Patent number: 10650648
    Abstract: Described herein is a method and system of distributed acoustic sensing, such as in an urban or metropolitan area involving a dedicated and established fibre optic communications network including a data centre. In general, the disclosed method and system includes the steps of (a) selecting an optical fibre cable installation having a path extending across a selected geographical area, the optical fibre cable installation including a bundle of optical fibres and forming part of a fibre-optic communications network, (b) determining characteristics associated with the optical fibre and/or the selected optical fibre installation, (c) transmitting outgoing light in the optical fibre, (d) receiving reflected light back scattered along the optical fibre, and (e) based on the reflected light and the determined characteristics, generating an alert signal representative of an acoustic event. The disclosed method and system is thereby configured to detect acoustic events near or within the selected geographical area.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 12, 2020
    Inventor: Mark Andrew Englund
  • Patent number: 10651930
    Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: May 12, 2020
    Assignee: INPHI CORPORATION
    Inventors: Shih Cheng Wang, Seyedmohammadreza Motaghiannezam, Matthew C. Bashaw
  • Patent number: 10651891
    Abstract: According to aspects of the disclosure, a method is disclosed comprising: detecting a first hop to a first frequency in a hopping sequence, the first hop being performed by a transmitter in accordance with the hopping sequence; identifying a weighting vector that corresponds to a second frequency in the hopping sequence; obtaining an equalizer vector for the second frequency based on the weighting vector and an equalizer matrix, the equalizer matrix including a plurality of equalizer vectors, each equalizer vector corresponding to a different frequency in the hopping sequence; detecting a second hop from the first frequency to the second frequency, the second hop being performed by the transmitter in accordance with the hopping sequence; receiving a signal that is transmitted by the transmitter at the second frequency; and equalizing the signal by using the equalizer vector for the second frequency.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 12, 2020
    Assignee: Raytheon Company
    Inventor: Thomas E. Gardiner
  • Patent number: 10644733
    Abstract: Methods and systems for crest factor reduction may comprise generating an original waveform, generating a distortion signal by reducing a crest factor of the original waveform, generating an error signal by subtracting out the original waveform from the distortion signal, and generating a conditioned waveform by adding the error signal to the original waveform. The crest factor of the original waveform may be reduced based on spectral mask requirements. The crest factor of the original waveform may be reduced using a limiter. The power amplifier may comprise a programmable gain amplifier (PGA). The distortion signal may be generated based on a PGA model and/or a predistortion model. A signal from an output of the PA may be fed back to the PGA model. The PGA model may be dynamically configured. The crest factor of the original waveform may be reduced in an analog domain and/or a digital domain.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: May 5, 2020
    Assignee: MAXLINEAR, INC.
    Inventors: Sridhar Ramesh, Timothy Gallagher, Shantha Murthy Prem Swaroop, Ali Shahed hagh ghadam
  • Patent number: 10630329
    Abstract: The invention described herein is directed to different embodiments of a wireless communications device that can be used in many different applications, such as but not limited to a digital oversampling receiver adapted to select desired signals and to reject undesired signals. In one embodiment, a wireless communications device is disclosed that comprises an architecture for a receiver front end that obviates the need for high order passive circuitry or RC active circuitry to select desired signals and to reject undesired signals.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: April 21, 2020
    Assignee: RFDirect Corp.
    Inventor: Ronald M. Hickling
  • Patent number: 10630523
    Abstract: Embodiments of the present disclosure describe systems, devices, and methods that may provide channel estimation and compensation in high speed scenarios, which may include user equipment carried on a high speed train. Embodiments may employ cell-specific reference signal (CRS)-based time-domain channel estimation and compensation.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: April 21, 2020
    Assignee: Apple Inc.
    Inventors: Shuang Tian, Yang Tang, Dae Jung Yoon
  • Patent number: 10623379
    Abstract: A system and method for providing physical layer security in a low power wireless communication system utilizing an analog finite impulse response filter to produce an analog representation of the electronic fingerprint that uniquely identifies a transmitting device. A decision logic circuit produces a digital representation of the electronic fingerprint of the RF signal, and digital storage stores the digital fingerprints of trusted wireless nodes. A learning mode allows the storage of digital fingerprints of trusted nodes, and recognition mode permits the passage of the RF signal through a receive-permissive switch only if the digital fingerprint of a trusted wireless node is recognized. One of several triggering events may disable the receive-permissive switch including passage a specified period of time, loss of RF signal for a specified time, reduction in the strength of RF signal below a specified threshold, loss of electrical power, and other system or operator input.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: April 14, 2020
    Assignee: Simmonds Precision Products, Inc.
    Inventor: Sanjay Bajekal
  • Patent number: 10608808
    Abstract: In certain embodiments, a method may include receiving one or more equalized samples of an input signal. The method may further include mitigating one or more excursions in the one or more equalized samples based on one or more current decisions of an iterative decoding process to generate compensated equalized samples. In addition, the method may include performing iterative decoding operations based on the compensated equalized samples, updating the current decisions of the iterative decoding process and outputting the current decisions as a converged result when the iterative decoding operations have converged for the compensated equalized samples.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: March 31, 2020
    Assignee: Seagate Technology LLC
    Inventors: Jason Vincent Bellorado, Marcus Marrow, Zheng Wu
  • Patent number: 10594869
    Abstract: Audio systems and methods of suppressing residual echo are provided that determine spectral mismatches by comparing a spectral density of a residual signal from an acoustic echo canceler to a spectral density of a program content signal. At least one spectral mismatch is stored in memory. The systems and methods select a spectral mismatch to use for calculating a filter coefficient, from among one or more of the stored or actively determined spectral mismatches, and filter the residual signal based upon the calculated filter coefficient.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: March 17, 2020
    Assignee: BOSE CORPORATION
    Inventors: Cristian M. Hera, Elie Bou Daher
  • Patent number: 10582505
    Abstract: A home system is provided. In a method of executing an application, information for executing the application is received from a device when accessing of the device is sensed, and the application is executed based on the received information. Accordingly, when a user merely brings a wireless guest device near to or in contact with an access point or a wired home device, it is possible to allow the wireless guest device to simultaneously automatically set an optimum security environment for a wireless network and execute an application that the user desires.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: March 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Min Lee, Se-Hee Han, Hyun-gyoo Yook, Seung-Jae Oh
  • Patent number: 10570801
    Abstract: A method and system for detecting whether a pressure line in a diesel exhaust fluid (DEF) delivery system has an obstruction. The system includes an electronic control unit with an electronic processor that is configured to receive an unfiltered pressure signal from a pressure sensor; to electronically filter the unfiltered pressure signal to determine a dosing pressure signal; to determine an integrated value based on the dosing pressure signal; and to determine whether the pressure line is obstructed by comparing the integrated value with a predetermined threshold.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: February 25, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Ashal J. Shah, Palanimuthu Thalamuthu, Oliver Wintersteller
  • Patent number: 10560111
    Abstract: A nested mixed-radix DDSM can guarantee zero systematic frequency error when used as a divider controller in a fractional-N frequency synthesizer is described. This disclosure presents a nested cascaded mixed-radix DDSM architecture which can also guarantee zero systematic frequency error. In addition, the disclosure allows one to use higher order auxiliary modulators and shaped dither signal to eliminate feedthrough spurs completely. By increasing the number of levels in the cascade, the moduli of the individual modulator stages can be reduced, thereby increasing the speed of the synthesizer.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: February 11, 2020
    Assignee: University College Cork-National University of Ireland, Cork
    Inventors: Hongjia Mo, Michael Peter Kennedy
  • Patent number: 10506565
    Abstract: A channel feedback information transmission method is disclosed. A terminal performs channel estimation on a subcarrier on which a downlink pilot is located, and obtains first channel information; the terminal performs a channel interpolation calculation on a channel of a data subcarrier according to the first channel information, and obtains second channel information according to a result of the channel interpolation calculation; the terminal determines a feedback factor; the terminal obtains third channel information from the second channel information according to the feedback factor, where an amount of the third channel information is less than an amount of the second channel information; and the terminal feeds back the third channel information to a base station. Some channel information is selected and fed back by means of a feedback factor.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: December 10, 2019
    Assignee: Huawei Technologies Co., LTD.
    Inventors: Tao Wu, Linjun Lv
  • Patent number: 10498312
    Abstract: A digital filtering method includes receiving a digital signal, and passing the digital signal through a Pth order comb cascade. The method includes beginning pre-computing of intermediate integrator states of a Pth order integrator cascade as a function of the digital signal, prior to receiving output from a last comb of the Pth order comb cascade. The outputs from each comb of the Pth order comb cascade are then applied to the pre-computed intermediate integrator states to thereby produce a filtered version of the digital signal. The Pth order comb cascade may operate at a sampling frequency, and the pre-computing of the intermediate integrator states is performed at the sampling frequency, while the application of the outputs from each comb of the Pth order comb cascade to the pre-computed intermediate integrator states is performed at a multiple of the sampling frequency.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: December 3, 2019
    Assignee: STMicroelectronics International N.V.
    Inventors: Mohit Singh, Ankur Bal
  • Patent number: 10432439
    Abstract: A wireless transmitter for transmitting bits to a wireless receiver. The wireless transmitter comprises: (i) circuitry for generating binary data bits; and (ii) circuitry for providing a first spreading sequence for a first bit in the binary data bits and for providing a second spreading sequence for a second bit in the binary data bits, wherein the second bit is complementary to the first bit. Each spreading sequence consists of an integer number N of bits, and the circuitry for providing provides a same bit value in an integer number M of bit positions in the first and second spreading sequences, where M<N.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: October 1, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Wenxun Qiu, Tomas Motos
  • Patent number: 10432390
    Abstract: The present invention is directed to a method, an apparatus and a system for error-free detection of bit values which are transmitted using a continuous data signal. For this purpose, a particularly advantageous metric is proposed, which makes a conclusion possible as to an optimum time for sampling the data signal and thus makes it possible to detect the bit value unambiguously.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: October 1, 2019
    Assignee: Inova Semiconductors GmbH
    Inventor: Roland Neumann
  • Patent number: 10382146
    Abstract: An initial phase of each output signal generated by a plurality of radio frequency (RF) front-end circuits is determined by mixing an input signal with a mixing signal in a mixer of the corresponding RF front-end circuit. To that end, a time difference for each of the plurality of RF front-end circuits is determined by measuring a time difference between a reference signal (common to all of the RF front-end circuits) and the mixing signal of each RF front-end circuit. The initial phase for each output signal is then determined based on the measured time difference for the corresponding RF front-end circuit. Determining the initial phase in this manner accounts for any uncertainty of the phase when the RF front-end circuits are activated, enabling the phase of the corresponding antenna element to be accurately controlled.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: August 13, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Samu Laaja, Jyri Sintonen
  • Patent number: 10367674
    Abstract: An array-based Compressed sensing Receiver Architecture (ACRA) includes an antenna array with two or more antennas connected to two or more ADCs that are clocked at two or more different sampling rates below the Nyquist rate of the incident signals. Comparison of the individual aliased outputs of the ADCs allows for estimation of signal component characteristics, including signal bandwidth, center frequency, and direction-of-arrival (DoA). Multiple digital signal processing (DSP) techniques, such as sparse fast Fourier transform (sFFT), can be employed depending on the type of detection or estimation.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: July 30, 2019
    Assignee: Massachusetts Institute of Technology
    Inventors: Andrew K. Bolstad, Jonathan D. Chisum, James E. Vian
  • Patent number: 10361734
    Abstract: A device and method for reducing intermodulation within a radio receiver. The device includes an intermodulation filter. The intermodulation filter is configured to receive a signal, apply a first filter and a second filter to the signal to generate a first and a second filtered signal. The intermodulation filter is configured to isolate a first intermodulation component located on a first side of a frequency spectrum of the signal within the second filtered signal, determine an estimated second intermodulation component based on a potential frequency band location, determine a correction factor based on an amplitude and phase relationship between the first and second intermodulation components, apply the correction factor to the estimated second intermodulation component, determine if the second intermodulation component exceeds a predetermined power threshold, and apply the adjusted estimated second intermodulation component to the first filtered signal, suppressing the second intermodulation component.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: July 23, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Jiun How Ng, Dongho Han, Moh Lim Sim
  • Patent number: 10361736
    Abstract: When a terminal aggregates three downlink carriers by using the carrier aggregation (CA) of the LTE-A technology and transmits an uplink signal on two uplink carriers while aggregating at least two uplink carriers, a harmonic component and an intermodulation distortion (IMD) component are generated, thereby influencing a downlink band of the terminal itself. Therefore, the present specification presents a scheme therefor.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: July 23, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Suhwan Lim, Jaehyuk Jang, Sangwook Lee, Manyoung Jung
  • Patent number: 10326469
    Abstract: Certain aspects of the present disclosure provide apparatus and techniques for segmenting a digital input signal for digital-to-analog conversion. For example, certain aspects provide a segmentation circuit for generating digital signal segments for a digital-to-analog converter. The segmentation circuit generally includes a modulo function logic circuit configured to generate a modulo output signal based on a digital input signal and a divisor input signal and a modulo range extension logic circuit configured to selectively direct the modulo output signal or the divisor input signal to an output of the segmentation circuit. In certain aspects, the output of the segmentation circuit may be used by the digital-to-analog converter to generate an analog signal based on the digital input signal.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: June 18, 2019
    Assignee: QUALCOMM Incorporated
    Inventor: William Cope
  • Patent number: 10326556
    Abstract: There is discloses a method of frequency correction during data transmission in a low-power wide-area network (LPWAN). The method is executable by a computing device coupled to the LPWAN. The method comprises: determining an actual frequency of the received message as a mid-point of a given spectrum section, based on the given spectrum section meeting a condition of: the message was successfully received in the given spectrum section, the signal quality metric has a maximum value in the given spectrum section in comparison with all other spectrum sections where that message was also received; calculating an expected frequency of the radio signal based on data contained in the message; determining a received radio signal frequency error as a difference between the actual frequency and the expected frequency of the signal; generating a message send frequency based on the received radio signal frequency error.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: June 18, 2019
    Assignee: WAVIOT INTEGRATED SYSTEMS, LLC
    Inventors: Danylo Sergeevich Batura, Vasiliy Vasilievich Anisimov
  • Patent number: 10326631
    Abstract: A multi-carrier cellular wireless network (400) employs base stations (404) that transmit two different groups of pilot subcarriers: (1) cell-specific pilot subcarriers, which are used by a receiver to extract information unique to each individual cell (402), and (2) common pilots subcarriers, which are designed to possess a set of characteristics common to all the base stations (404) of the system. The design criteria and transmission formats of the cell-specific and common pilot subcarriers are specified to enable a receiver to perform different system functions. The methods and processes can be extended to other systems, such as those with multiple antennas in an individual sector and those where some subcarriers bear common network/system information.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: June 18, 2019
    Assignee: Neocific, Inc.
    Inventors: Xiaodong Li, Titus Lo, Kemin Li, Haiming Huang
  • Patent number: 10311886
    Abstract: An apparatus for processing an audio signal includes a configurable first audio signal processor for processing the audio signal in accordance with different configuration settings to obtain a processed audio signal, wherein the apparatus is adapted so that different configuration settings result in different sampling rates of the processed audio signal. The apparatus furthermore includes n analysis filter bank having a first number of analysis filter bank channels, a synthesis filter bank having a second number of synthesis filter bank channels, a second audio processor being adapted to receive and process an audio signal having a predetermined sampling rate, and a controller for controlling the first number of analysis filter bank channels or the second number of synthesis filter bank channels in accordance with a configuration setting.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: June 4, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Lohwasser, Manuel Jander, Max Neuendorf, Ralf Geiger, Markus Schnell, Matthias Hildenbrand, Tobias Chalupka
  • Patent number: 10305589
    Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: May 28, 2019
    Assignee: INPHI CORPORATION
    Inventors: Shih Cheng Wang, Seyedmohammadreza Motaghiannezam, Matthew C. Bashaw
  • Patent number: 10298417
    Abstract: Methods and systems for obtaining improved channel estimates for frequency-multiplexed data transmissions such as OFDM, OFDMA, or SC-FDMA transmissions overcome the limitations of the static assumption by using a polynomial or other fitting function to fit and model the frequency dependence of the channel coefficients, so that estimates can be applied to larger subcarrier groups. Some embodiments provide channel estimates for a singular signal source, while other embodiments provide joint channel estimates for a plurality of signal sources. In embodiments, selection of the fitting functions is influenced by all previously determined channel estimates. In some embodiments, a tracking algorithm allows use of the lowest possible order of polynomial or other fitting function to model the frequency dependence of the channel coefficients, whereby the channel estimate is continually shifted in frequency while the order of the polynomial or other fitting function remains low.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: May 21, 2019
    Assignee: COLLISON COMMUNICATIONS, INC.
    Inventor: Brandon Hombs
  • Patent number: 10299201
    Abstract: Within many applications impulse radio based ultra-wideband (IR-UWB) transmission offers significant benefits for very short range high data rate communications when compared with existing standards and protocols. In many of these applications the main design goals are very low power consumption and very low complexity design for easy integration and cost reduction. Digitally programmable IR-UWB transmitters using an on-off keying modulation scheme on a 0.13 microns CMOS process operating on 1.2V supply and yielding power consumption as low as 0.9 mW at a 10 Mbps data rate with dynamic power control are enabled. The IR-UWB transmitters support new frequency hopping techniques providing more efficient spectrum usage and dynamic allocation of the spectrum when transmitting in highly congested frequency bands. Biphasic scrambling is also introduced for spectral line reduction.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: May 21, 2019
    Assignee: Transfert Plus, Societe en Commandite
    Inventors: Frederic Nabki, Dominic Deslandes, Alexandre Desmarais, Anhkiet Vuong, Anis Bounif, Wang Yu Hao, William Pham
  • Patent number: 10291363
    Abstract: Described is a method for joint confirmation of many messages in Low Power Wide Area Networks (LPWANs) including adding information on order of messages in transmitted data, parsing order data in messages on a receiving side, sending system message back to original transmitter where information on reception success is encoded bitwise in data field, so that each bit represents one successfully received message.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: May 14, 2019
    Assignee: WAVIOT INTEGRATED SYSTEMS, LLC
    Inventors: Danylo Batura, Vasiliy Anisimov
  • Patent number: 10291271
    Abstract: An adaptive analog parallel combiner circuit for receiver data recovery from a communication signal is provided. The circuit includes a summer that sums outputs of a plurality of filter taps in parallel, including zeroth and first through Nth filter taps, each filter tap having as input the communication signal or a version thereof, wherein N is a finite integer greater than or equal to two. The zeroth filter tap has an amplifier with gain controlled by a zeroth adaptive gain control coefficient, and each of the first through Nth filter taps having an all pass filter and gain controlled amplification, with gain controlled by a corresponding one of a first through Nth adaptive gain control coefficients and the all pass filter implementing a transfer function having a zero and a pole equaling each other and at a base frequency divided by a corresponding integer from one through N.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 14, 2019
    Inventors: Albert Vareljian, Vassili Kireev
  • Patent number: 10270520
    Abstract: A, method and apparatus for wirelessly transmitting data to a plurality of terminals in each of a plurality of beams through a plurality of transmit feeds includes selecting, for each beam, two or more terminals among the plurality of terminals in the beam as a subgroup of terminals, on the basis of channel state information of the plurality of terminals; determining, for each beam, equivalent channel state information representing the subgroup of terminals in the beam on the basis of the channel state information of the terminals of at least one of the plural subgroups of terminals; and determining a set of weight coefficients that relate the plurality of transmit feeds to a plurality of signals that are intended for transmission in the plurality of beams on the basis of the equivalent channel state information representing the plural subgroups of terminals.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 23, 2019
    Assignee: European Space Agency
    Inventors: Pantelis-Daniel Arapoglou, Alberto Ginesi, Giorgio Taricco, Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten, Miguel Angel Vazquez, Ana Isabel Perez-Neira, Stefano Andrenacci, Alessandro Vanelli Coralli
  • Patent number: 10248612
    Abstract: A simplified serial interface for a communications device. The serial interface includes an RF front end and a transmit block and at least one receive block located on different dies. The receive block is activated by a clock generator that is separate than the system clock. The at least one receive block can inhibit transmission of an enable signal to the receive block and inhibit operation of an oscillator of the interface.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 2, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: James Henry Ross, Matthew Lee Banowetz
  • Patent number: 10237016
    Abstract: A receiver, transmitter and system are programmed to communicate based on a signal including a plurality of signal components associated respectively with a plurality of subcarriers over a communications channel. The receiver is programmed to determine, from the plurality of subcarriers, a subcarrier subject to interference and erase the signal component associated with the subcarrier subject to interference. The receiver is further programmed to reconstruct the signal based on the plurality of first signal components excluding the erased first signal component.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: March 19, 2019
    Assignee: Hughes Network Systems, LLC
    Inventors: Bassel F. Beidas, Rohit Iyer Seshadri, Lin-Nan Lee, Liping Chen
  • Patent number: 10218971
    Abstract: Systems, methods, and instrumentalities are disclosed for adaptive upsampling for multi-layer video coding. A method of communicating video data may involve applying an upsampling filter to a video sequence to create encoded enhancement layer pictures. The upsampling filter may be applied at a sequence level of the video sequence to create the enhancement layer bitstream. The upsampling filter may be selected from a plurality of candidate upsampling filters, for example, by determining whether knowledge of a category related to the video sequence exists and selecting a candidate upsampling filter that is designed for the category related to the video sequence. Upsampling filter information may be encoded. The encoded upsampling information may comprise a plurality of coefficients of the upsampling filter. The encoded upsampling filter information and the encoded enhancement layer pictures may be sent in an output video bitstream. The method may be performed, for example, by an encoder.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: February 26, 2019
    Assignee: VID SCALE, Inc.
    Inventors: Jie Dong, Enming Luo, Yuwen He, Yan Ye
  • Patent number: 10219234
    Abstract: A method for long-term evolution (LTE) synchronization by a signal receiver in the presence of interference signals including providing multiple parallel adaptive filters to eliminate the contribution of an interference signal to a timing metric of an LTE signal; wherein coefficients of each of the parallel adaptive filters are determined using a linearly constrained minimum variance (LCMV) criterion to minimize output power of each filter subject to the LCMV criterion that preserves received signal vectors corresponding to all possible primary synchronization signal signatures; and wherein the LCMV criterion are updated iteratively using a recursive least squares (RLS) algorithm.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: February 26, 2019
    Assignee: Allen-Vanguard Corporation
    Inventors: Halim Yanikomeroglu, Amr El-Keyi, Oktay Ureten, Trevor Noel Yensen
  • Patent number: 10210601
    Abstract: The image processing apparatus is configured by including a palm luminance estimation unit and a surface reflected component enhancement unit that separate low-frequency components from a signal indicating luminance values of pixels of an input image, a denoising processing unit that executes a denoising process for the signal from which the low-frequency components have been separated, and a merging unit that generates an image by merging the signal after the denoising process and the low-frequency components.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: February 19, 2019
    Assignee: Fujitsu Frontech Limited
    Inventors: Tomoharu Suzuki, Shinichi Eguchi
  • Patent number: 10181916
    Abstract: A novel and useful apparatus and method for an image-interferer aware single quadrature RF downconversion (SQRD) low intermediate frequency (LIF) receiver and related power reduction techniques utilized therein. The invention applies zero-margin adaptive transceiver (ZMAT) design principles to considerably reduce the receiver's power consumption in an adaptive fashion in accordance with the instantaneous reception conditions. In a low IF dual-branch (i.e. quadrature) downconversion receiver, the radio monitors the image strength and shuts off the receiver's Q branch (or I branch) when image rejection is not needed (i.e. when the relative image strength is below a threshold), thus significantly reducing power consumption in the RF receiver. A zero IF receiver is switched to a SQRD low IF receiver of lower power consumption when the image interferer strength is low enough to allow for a given required level of performance.
    Type: Grant
    Filed: July 16, 2017
    Date of Patent: January 15, 2019
    Assignee: Short Circuit Technologies LLC
    Inventors: Sankalp Modi, Oren E. Eliezer
  • Patent number: 10177796
    Abstract: A receiver has a receiving unit to receive a radio signal, a signal detector to detect a reception signal in each of a plurality of set periods shifted in time to be overlapped in a partial period, and a demodulating unit to perform demodulation processing based on the reception signal. The signal detector has a smoothing unit to smooth the output signal of the receiving unit in each of the plurality of set periods, a comparing unit to output a signal obtained by comparing a level of the smoothed signal, with a threshold value, and an initializing unit to initialize the signal smoothed by the smoothing processing unit, every time the comparing unit compares the smoothed signal with the threshold value, and the demodulating unit performs the demodulation processing based on the smoothed signal determined to be the threshold value or more by the comparing unit.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: January 8, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Junya Matsuno, Hidenori Okuni, Masanori Furuta, Tetsuro Itakura
  • Patent number: 10168431
    Abstract: A method and a system for reducing undesired interference in a target zone. A set of M pickup sensors pick up undesired signals in real time and generate M pickup signals, M being an integer greater than or equal to 1. A beam forming network coupled to the M pickup sensors comprises a receiving beam forming module and a transmitting beam forming module. The receiving beam forming module receives the M pickup signals and generates K beam signals, K being an integer greater than or equal to 1. The transmitting beam forming module receives the K beam signals and generates N interference signals, N being an integer greater than 1. A set of N injectors coupled to the transmitting beam forming module receives the N interference signals, respectively, and radiates the N interference signals to the target zone.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: January 1, 2019
    Assignee: SPATIAL DIGITAL SYSTEMS, INC.
    Inventors: Donald C. D. Chang, Michael T. H. Lin, Steve Chen
  • Patent number: 10133435
    Abstract: A method and related processing system and input device are disclosed, the method comprising driving a first capacitive sensing signal having a predefined first sensing frequency onto a first group of a plurality of sensor electrodes, and acquiring first capacitive measurements of resulting signals received by a second group of the plurality of sensor electrodes. Acquiring first capacitive measurements comprises applying a first demodulation signal having a predefined mixing period defined within a sensing period associated with the first sensing frequency. The method further comprises operating, based on the first demodulation signal, one or more switching elements coupled with one or more sensor electrodes of the first group or the second group, wherein the one or more switching elements are in a conducting state during the mixing period.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: November 20, 2018
    Assignee: SYNAPTICS INCORPORATED
    Inventor: Eric Scott Bohannon
  • Patent number: 10091041
    Abstract: In some embodiments, a wireless communication apparatus may include, but is not limited to, a segment divider, a reference symbol inserter, a phase rotator, an adder, and a peak-to-average power ratio evaluator. The reference symbol inserter inserts at least one reference symbol having a phase into at least one of the subcarrier segments. The phase rotator performs respective phase rotations to the subcarrier segments, based at least in part on a plurality of different combination patterns, each of the different combination patterns identifying a respective phase rotation to the subcarrier segments. The peak-to-average power ratio evaluator calculates, for each of the plurality of different combination patterns, a peak-to-average power ratio of the transmission signals generated. The peak-to-average power ratio evaluator selects, from the transmission signals, a transmission signal having a smallest peak-to-average power ratio among the plurality of peak-to-average power ratios calculated.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: October 2, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Tanahashi, Toshiyuki Nakanishi, Noboru Taga
  • Patent number: 10090870
    Abstract: Various aspects of this disclosure describe detecting a signal and measuring power with a multi-band filter. Examples include a signal detection and power measurement module in a receiver capable of detecting a training signal and calculating a reliable power measurement in the presence of narrowband interference. A received signal is filtered by a multi-band filter comprising a plurality of sub-band filters. For instance, sub-band filters may be bandpass filters with non-overlapping pass-bands. A training signal is detected by comparing powers of each of the outputs of the sub-band filters to a plurality of thresholds. For example, each sub-band may be assigned a different threshold value. Responsive to detecting a training signal, a power measurement is determined from at least one sub-band filter output. A gain is set based on the determined power measurement, and applied in the receiver.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: October 2, 2018
    Assignee: Marvell International Ltd.
    Inventors: Shaoan Dai, Kok-Wui Cheong, Zhenzhong Gu, Junqing Sun
  • Patent number: 10027985
    Abstract: An improvement in efficiency in an image decoding process is intended. An image coding device codes a texture image and a depth image. In the coding, the image coding device performs coding of the texture image by using depth information and coding of the texture image without using the depth information while following a coding control parameter. Further, the image coding device codes use result information that indicates whether or not the depth information is used in coding the texture image. An image decoding device decodes the texture image and the depth image. In the decoding, the image decoding device decodes the depth image in a case where decoded use result information indicates that the depth information is used and skips a decoding process of the depth image in a case where the depth information is not used.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 17, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Yoshiya Yamamoto
  • Patent number: 10009839
    Abstract: This invention relates to ultra wideband wireless communications and more particularly communications systems exploiting mixerless transmitters and energy based receivers. The transmitter as an impulse radio with dynamic frequency and bandwidth hopping for dynamic setting of emitted power spectrum density. The receiver performs dynamic configuration by performing receipt of a wireless training pulse sequence.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: June 26, 2018
    Assignee: Transfert Plus, Societe En Commandite
    Inventors: Frederic Nabki, Dominic Deslandes, Alexandre Desmarais, Anhkiet Vuong, Anis Bounif, Wang Yu Hao, William Pham
  • Patent number: RE47792
    Abstract: A digital broadcast system including a broadcast receiving system and data processing method are disclosed. In the broadcast receiving system receiving broadcast signals, the broadcast receiving system includes a transmission parameter decoding unit, a known sequence detector, and a burst controller. The transmission parameter decoding unit detects information on a burst of a received signal from broadcast data having main service data and mobile service data multiplexed therein within a field of the received signal and outputs the detected information on the burst. The known sequence detector receives burst information from the transmission parameter decoding unit and uses the received burst information and known data position information included in the received data, so as to output burst control information. The burst controller uses the burst control information to control power supply of the broadcast receiving system.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: December 31, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jong Moon Kim, In Hwan Choi, Kook Yeon Kwak, Byoung Gill Kim, Won Gyu Song, Jin Woo Kim, Hyoung Gon Lee