By Filtering (e.g., Digital) Patents (Class 375/350)
  • 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: 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: 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: 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: 9992000
    Abstract: An aspect of the disclosure provides a wireless frame transmission method. Such a method includes duplicating a preamble in the frequency domain to form at least one duplicate preamble, each preamble having multiple fields. The method further includes puncturing at least one of the preamble fields in the preamble with a first puncturing pattern and puncturing corresponding preamble fields in the at least one duplicate preamble with at least one additional puncturing pattern. The method further includes transmitting a frame including the preamble, the at least one duplicate preamble and a payload. In some embodiments the preamble and the duplicate preambles are each at different frequencies.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: June 5, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jung Hoon Suh, Yan Xin, Osama Aboul-Magd, Sheng Sun
  • Patent number: 9983680
    Abstract: A method is described including performing gestural training to extract training signals representing a gesture from each sensor in a sensor array, storing the training signals for each signal corresponding to the gesture in a library, receiving real time signals from the sensor array and comparing the real time output signals to corresponding training signals within the library to determine if a gesture has been recognized.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 29, 2018
    Assignee: INTEL CORPORATION
    Inventors: Alberto Alcocer Ochoa, David Arditti Ilitzky, Hector A. Cordourier Maruri, Jose R. Camacho Perez
  • Patent number: 9971018
    Abstract: An interference removal filter that includes a combination of a first filter and a second filter, where the first filter passes signals over a frequency range of size B with a variation of less than +/?3 dB, where the peak value of the impulse response of the second filter is displaced in time from the peak value of the impulse response of the first filter by at least 2/B time units, and where the combination of the first filter and the second filter produces a notch in frequency at a frequency location within the frequency range.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 15, 2018
    Assignee: NextNav, LLC
    Inventor: Norman F. Krasner
  • Patent number: 9965100
    Abstract: A sensor panel device that can generate and use a stimulus signal having multiple different waveforms for detecting events on or near the sensor panel is disclosed. Among other things, such a stimulus signal can be used to reject environmental noise present in the device. In some embodiments, the stimulus signal has multiple waveforms having different frequencies. Logic circuitry can generate representative values from output of the different waveforms applied to one or more sensing nodes in the sensor panel device. From the representative values, a final value can be generated that represents whether an event occurred at or near the one or more sensing nodes.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: May 8, 2018
    Assignee: Apple Inc.
    Inventors: Christoph Horst Krah, Minh-Dieu Thi Vu
  • Patent number: 9941986
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: April 10, 2018
    Assignee: Maxlinear, Inc.
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Patent number: 9927905
    Abstract: Disclosed herein is an electronic device having a force sensing device. The force sensing device receives a continuous force input which is translated into a discrete event. In order to more accurately determine when the discrete event is to occur, the electronic device includes a two low-pass filters that concurrently receive a force signal from the force sensing device. The first low-pass filter has a first bandwidth and the second low-pass filter has a second bandwidth that is greater than the first bandwidth. The two low-pass filters filter the force signal to provide a user interface with a precise feel for slower more deliberate input while also providing fast response times for stronger, shorter input.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: March 27, 2018
    Assignee: Apple Inc.
    Inventor: John Stephen Smith
  • Patent number: 9883203
    Abstract: In general, techniques are described for performing adaptive overlapped block motion compensation when coding video data. A video coding device configured to code video data may implement the techniques. The video coding device may comprise one or more processors configured to determine an adaptation metric from a region of support for one of a first partition and a second partition of one or more blocks of the video data separated by a partition boundary. The region of support may not be the entire one or more blocks of video data. The one or more processors may further be configured to adapt, based on the adaptation metric, application of an overlapped block motion compensation process to determine predicted pixel values near the partition boundary for a first predicted block representative of the first partition of the video block.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: January 30, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Wei-Jung Chien, In Suk Chong, Liwei Guo, Marta Karczewicz
  • Patent number: 9864465
    Abstract: The present invention is applicable to the technical field of touch control. Provided are a touch detection system and a noise suppression method therefor. The method includes the steps of: sequentially driving a touch detection system with all driving frequencies that the touch detection system supports, and detecting a currently existing interference strength value when driving with each driving frequency; and frequency-hopping to the driving frequency corresponding to the minimum interference strength value, and driving the touch detection system with the driving frequency corresponding to the minimum interference strength value to perform a normal operation. By detecting an interference strength value at each driving frequency and then using the driving frequency corresponding to the minimum interference strength value as an operating frequency of a touch terminal, the present invention minimizes the signal interference of a touch detection system.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: January 9, 2018
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Jinchun Ye, Haolei Wang, Bin Ruan
  • Patent number: 9860870
    Abstract: Techniques are described herein that enhance the following: (1) how a wireless device conveys a change of its downlink (DL) coverage class (CC) to a network; and (2) how the network and the wireless device each perform a new paging group procedure to align coverage class paging groups within a given Extended Discontinuous Receive (eDRX) cycle for the wireless device. In addition, devices namely a wireless device, a radio access network node (e.g., Base Station Subsystem), and a core network node (e.g., Serving GPRS Support Node) that implement these techniques are described herein.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: January 2, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mårten Sundberg, Nicklas Johansson, Paul Schliwa-Bertling, John Walter Diachina
  • Patent number: 9847085
    Abstract: A method for processing a signal in the form of consecutive sample blocks, the method comprising filtering in a transformed domain of sub-bands, and particularly equalization processing, applied to a current block in the transformed domain, and filtering-adjustment processing that is applied in the transformed domain to at least one block adjacent to the current block.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: December 19, 2017
    Assignee: Orange
    Inventors: Pierrick Philippe, David Virette
  • Patent number: 9829580
    Abstract: A system for reducing undesired interference in a target zone is disclosed. The system comprises a set of M pickup sensors, a beam forming network coupled to the M pickup sensors, and a set of N injectors coupled to the beam forming network. The 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. The beam forming network comprises a set of M beam forming modules. Each of the M beam forming modules receives a respective one of the M pickup signals and generates N intermediate signals, N being an integer greater than 1. The N intermediate signals generated by each of the M beam forming modules are combined correspondingly with remaining intermediate signals generated by remaining M?1 beam forming modules to generate N interference signals. The N injectors receive and radiate the N interference signals to the target zone.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: November 28, 2017
    Assignee: Spatial Digital Systems, Inc.
    Inventors: Donald C. D. Chang, Michael T. H. Lin, Steve Chen
  • Patent number: 9786254
    Abstract: In a method of capacitive sensing using an integrated capacitive sensor device and display device, a transmitter signal is transmitted with a combination electrode of the integrated capacitive sensor device and display device. The combination electrode is configured for both capacitive sensing and display updating. The transmitter signal transitions at least twice during a non-display update time period associated with row update of the display device. A display of the display device is updated during an update time period. A resulting signal is received with a receiver electrode of the integrated capacitive sensor device and display device during the non-display update time period. The resulting signal corresponds to the transmitter signal.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 10, 2017
    Assignee: Synaptics Incorporated
    Inventors: Joseph Kurth Reynolds, Shahrooz Shahparnia, Adam Schwartz, Joel Jordan
  • Patent number: 9780815
    Abstract: Various embodiments relate to a device for reducing noise in a received signal, the device including a memory; a processor configured to: receive a signal containing narrow band noise which was transmitted over a channel and received at an analog front end; add two separate delays to the signal to generate a first delayed signal and a second delayed signal; apply an adaptive noise cancellation using the first delayed signal and the second delayed signal to estimate the narrow band noise; and remove the narrow band noise based upon the estimated narrow band noise.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: October 3, 2017
    Assignee: NXP B.V.
    Inventor: Sujan Pandey
  • Patent number: 9749168
    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: June 22, 2015
    Date of Patent: August 29, 2017
    Assignee: Neocific, Inc.
    Inventors: Xiaodong Li, Titus Lo, Kemin Li, Haiming Huang
  • Patent number: 9741332
    Abstract: A noise reducing device includes: an acoustic-to-electric conversion section for collecting noise and outputting an analog noise signal; an analog-to-digital conversion section for converting the analog noise signal into a digital noise signal; and a digital processing section for generating a digital noise reducing signal on a basis of the digital noise signal and a desired parameter. The device further includes: a retaining section for retaining a plurality of parameters corresponding to a plurality of kinds of noise characteristics; a setting section for setting one of the plurality of parameters as the desired parameter of the digital processing section; a digital-to-analog conversion section for converting the digital noise reducing signal into an analog noise reducing signal; and an electric-to-acoustic conversion section for outputting noise reducing sound on a basis of the analog noise reducing signal.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: August 22, 2017
    Assignee: SONY CORPORATION
    Inventor: Kohei Asada
  • Patent number: 9712345
    Abstract: A communication device and method of controlling the same are provided. A communication device includes a transceiver that receives a radio signal and a processor electrically connected to the transceiver, and is configured to store a data signal including data received through the radio signal in a first buffer according to a first delay period, store a channel signal including channel estimation information on a transmission channel of the radio signal in a second buffer according to a second delay period, determines a coefficient of a low pass filter and a group delay related to the low pass filter based on information related to the radio signal, and output at least one of the channel signals stored in the second buffer based on the determined group delay and the first delay period to perform equalizing.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 18, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jin-Hyun So, Soo-Bok Yeo, Se-Jin Kong, Seok-Joong Heo, Min-Goo Kim, Chae-Hag Yi
  • Patent number: 9686628
    Abstract: An audio channel control circuit includes a filter module and a determining module. The audio channel control circuit receives a first audio signal and a second audio signal from an audio device. The first audio signal loads a first carrier signal, while the second audio signal loads a second carrier signal. The first carrier signal and the second carrier signal have different phases. The filter module filters the first audio signal and the second audio signal, separating the first carrier signal from the first audio signal and the second carrier signal from the second audio signal. According to the phases of the first carrier signal and the second carrier signal, the determining module chooses a speaker of the left audio channel or a speaker of the right audio channel to output the first audio signal or the second audio signal.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: June 20, 2017
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chun-Te Wu
  • Patent number: 9651670
    Abstract: A method and apparatus for improving anti-jamming performance are provided. A threshold value level estimated in a GPS (global positioning system) receiver RF/IF stage, a threshold value weight, a median value of a median value of a 2˜8 MHz bandwidth is estimated as a threshold value with respect to a frequency component exceeding the estimated threshold value level, and an adjustable K-median threshold scheme is provided in a multi-jamming environment.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: May 16, 2017
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Jun O Kim, Jun Seoung Bae, Ki Won Song
  • Patent number: 9647679
    Abstract: Various embodiments of the present technology may comprise a method and device for a delta-sigma ADC. The method and device may comprise receiving an input signal to at least two parallel-connected first-stage integrators and corresponding feedback DACs, and simultaneously integrating the input signal by each of the first-stage integrators. The method and device may further comprise a second stage integrator connected in series with the first-stage integrators, a quantizer, and digital to analog converters, coupled between the output of the quantizer and the inputs of the first-stage integrators.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: May 9, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Akinobu Onishi
  • Patent number: 9641372
    Abstract: A method for controlling a combined waveform, representing a combination of at least two signals having orthogonal frequency multiplexed signal components, comprising: receiving information defining the at least two signals; transforming the information defining each signal to a representation having orthogonal frequency multiplexed signal components, such that at least one signal has at least two alternate representations of the same information, and combining the transformed information using the at least two alternate representations, in at least two different ways, to define respectively different combinations; analyzing the respectively different combinations with respect to at least one criterion; and outputting a respective combined waveform or information defining the waveform, representing a selected combination of the transformed information from each of the at least two signals selected based on the analysis.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: May 2, 2017
    Assignee: Plusn LLC
    Inventor: John David Terry
  • Patent number: 9621206
    Abstract: An RF receiver comprising: an RF signal processing unit for receiving an RF signal, wherein the RF signal processing unit comprises a dynamically reconfigurable RF filter for filtering the RF signal; an analog-to-digital converter for converting the filtered RF signal to a digital signal; and a digital signal processing unit for processing the digital signal to provide at least one channel; wherein the digital signal processing unit is adapted to adjust a respective transfer function of at least one said channel when the RF filter is reconfigured, to at least partially compensate a change in the transfer function of the RF filter.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: April 11, 2017
    Assignee: NXP B.V.
    Inventors: Olivier Jamin, Fabien Lefebvre, Gilles Seferian
  • Patent number: 9614696
    Abstract: Common wave and sideband mitigation communication systems and methods are provided that can be used with both wireless and wired communication links. The systems and methods provided can enable faster data rates, greater immunity to noise, increased bandwidth/spectrum efficiency and/or other benefits. Applications include but are not limited to: cell phones, smartphones (e.g., iPhone, BlackBerry, etc.), wireless Internet, local area networks (e.g., WiFi type applications), wide area networks (e.g., WiMAX type applications), personal digital assistants, computers, Internet service providers and communications satellites.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: April 4, 2017
    Assignee: FALCON NANO, INC.
    Inventors: William A. Hastings, III, James Horn
  • Patent number: 9590757
    Abstract: An equalizer for equalizing a composite signal originating from a given number of simultaneous data streams able to be received over a communication channel, on a given number of antennas, at one or more radio units, in a wireless communication system. The equalizer performs matrix operations when the number of receiving antennas associated with the composite signal is lower than the number of antennas supported by the equalizer. The channel matrix and the signal and interference covariance matrices are manipulated. The antenna dimension is increased, padding is then added and the transmitted signal vector is finally determined based on the altered matrices. A baseband processing unit, a method and a computer program are also claimed.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: March 7, 2017
    Assignee: NXP USA, INC.
    Inventors: Igor Levakov, Haim Ben-Lulu, Vincent Pierre Martinez
  • Patent number: 9590688
    Abstract: Cellular processors are cascaded to provide different configurations, which result in higher-capacity base stations, increased numbers of simultaneous users over one frequency band, and/or aggregation of several carriers while still using only one radiofrequency (RF) chipset. The processors are aligned in both time and frequency, with each processor having a data port that allows data exchange with the other processors. The data alignment and exchange allow the processors, in the aggregate, to act as a single unit, resulting in a scalable architecture that can accommodate different system configurations.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: March 7, 2017
    Assignee: BROADCOM CORPORATION
    Inventor: Rafael Carmon
  • Patent number: 9591657
    Abstract: Techniques are described for wireless communication. A first method includes measuring, by a first device, a condition of a wireless channel; and generating at least one channel side information feedback message based on the measured condition of the wireless channel. The at least one channel side information feedback message provides information on a relationship of a set of parameters, including a data rate parameter, an error probability parameter, and at least one of a deadline parameter or a transmission link parameter. A second method includes measuring, by a first device, interference on a wireless channel; identifying an interfering device for the wireless channel based on the measurement; and generating a channel side information feedback message based on the measured interference on the wireless channel. The channel side information feedback message indicates the interfering device for the wireless channel and a correlation of interference from the interfering device with time or frequency.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: March 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, John Edward Smee, Joseph Soriaga, Naga Bhushan, Kambiz Azarian Yazdi, Krishna Kiran Mukkavilli, Alexei Yurievitch Gorokhov, Peter Gaal
  • Patent number: 9582104
    Abstract: A sensor panel device that can generate and use a stimulus signal having multiple different waveforms for detecting events on or near the sensor panel is disclosed. Among other things, such a stimulus signal can be used to reject environmental noise present in the device. In some embodiments, the stimulus signal has multiple waveforms having different frequencies. Logic circuitry can generate representative values from output of the different waveforms applied to one or more sensing nodes in the sensor panel device. From the representative values, a final value can be generated that represents whether an event occurred at or near the one or more sensing nodes.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: February 28, 2017
    Assignee: Apple Inc.
    Inventors: Christoph Horst Krah, Minh-Dieu Thi Vu
  • Patent number: 9571182
    Abstract: Systems and methods for canceling cross-coupled satellite signals in a LNB IC include receiving a first satellite signal at a first pin of the LNB IC and adjusting the first satellite signal by applying a first adaptive filter to the first satellite signal signal, the first adaptive filter having first filter coefficients; combining the adjusted first satellite signal with a second satellite signal received at a second pin of the LNB IC to generate a first combined satellite signal; measuring the total output power of the combined satellite signal; changing the filter coefficients of the first adaptive filter; remeasuring the total output power of the first combined satellite signal after the changing of the first filter coefficients to determine whether the total power of the first combined satellite signal has decreased.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: February 14, 2017
    Assignee: Entropic Communications, LLC
    Inventors: Branislav Petrovic, Tommy Yu, Troy Brandon, Ralph Duncan
  • Patent number: 9520139
    Abstract: A method for reducing disturbing tone signals from acoustic echoes or background noises in speech/audio signal enhancement processing comprises decomposing a full-band input microphone speech signal into plurality of sub-band component channel signals by using a filter-bank; disturbing tone signal in each sub-band component channel signal is detected by using parameters such as a second reflection coefficient from LPC analysis, a time domain sharpness parameter, a normalized pitch correlation, and/or a SNR parameter; the energy of the current sub-band component channel signal is reduced by multiplying a reduction gain if the disturbing tone signal is detected in the current sub-band component channel signal; all the component channel signals are summed back to output a tone-reduced full band speech signal.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: December 13, 2016
    Inventor: Yang Gao
  • Patent number: 9496905
    Abstract: A receiver architecture optimizes receiver performance in the presence of interference. In various embodiments, power estimation circuits are used with variable selectivity to determine the exact nature of the interference and to optimize the performance correspondingly. The variable selectivity is achieved using stages of filtering with progressively narrower bandwidths. Also, the actual method of optimizing the receiver performance is an improvement compared to the traditional techniques in that the gain settings and the baseband filter order (stages to be used) will be optimized based on the nature of the interference as determined by the power detector measurements. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: November 15, 2016
    Assignee: Spreadtrum Communications USA Inc.
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Patent number: 9451639
    Abstract: Methods and apparatus are provided for a User Equipment (UE) and a base station in communication with each other to determine parameters for a Random Access (RA) process. The base station informs the UE through a System Information Block (SIB) of a number of resource sets for RA preamble transmission by the UE. Each resource set is associated with a number of repetitions for a RA preamble transmission, with a maximum number of RA preamble transmissions, and with a number of repetitions the base station transmits a response to a RA preamble reception. The SIB also informs an association between a range of path-loss values and a number of RA preamble repetitions. The UE determines a number of repetitions for a first RA preamble transmission from its path-loss measurement.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: September 20, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ying Li, Aris Papasakellariou, Boon Loong Ng