Automatic Gain Control Patents (Class 375/345)
  • Patent number: 10897228
    Abstract: A detector circuit includes: a squaring circuit configured to receive an output of a power amplifier of a radio transmitter and to produce an output current, the output of the power amplifier including: a desired tone; a local oscillator leakage tone; and an image tone, and the output current of the squaring circuit including: a direct current (DC) component including a function of the desired tone and an alternating current (AC) component; and a DC current absorber electrically connected to an output terminal of the squaring circuit, the DC current absorber being configured to filter out the DC component of the output current of the squaring circuit to produce a filtered output of the squaring circuit, the filtered output including the AC component including functions of the local oscillator leakage tone and the image tone.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: January 19, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hariharan Nagarajan, Ashutosh Verma, Chung Lau, Tienyu Chang
  • Patent number: 10887033
    Abstract: The present invention relates to a method and a device 10 for processing mixed audio data, including decomposing in real-time with low latency, in which a continuous stream of mixed audio data is received from an audio source 14, a first chunk of the stream of mixed audio data is loaded into a buffer, the audio data contained in the buffer is decomposed to obtain first decomposed audio data representing audio signals of a predetermined timbre, and a first chunk of output data is obtained from the first decomposed audio data, preferably for direct playback via speaker 26.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: January 5, 2021
    Assignee: ALGORIDDIM GMBH
    Inventors: Federico Tessmann, Kariem Morsy, Christoph Teschner
  • Patent number: 10872054
    Abstract: An apparatus includes an interface and a plurality of impedance branches. The interface may be configured to receive a data signal and a plurality of selection signals. The plurality of impedance branches may comprise a group of branches and a separated branch. The plurality of impedance branches may be configured to adjust an impedance value and a gain of a data path for the data signal in response to the selection signals. The group of branches may be controlled in response to the selection signals to select the impedance value and a first gain value in a first mode. The separated branch may replace one of the plurality of impedance branches in the group of branches in response to the selection signals to select a second gain value in a second mode.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: December 22, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Yi Xie, Yue Yu, Yuan Zhang, Yu Min Zhang
  • Patent number: 10873868
    Abstract: An apparatus for measuring radio frequency power is described that comprises at least one measurement path for small bandwidth and at least one measurement path for wide bandwidth. Further, the apparatus has an analysis and measurement unit connected with the at least two measurement paths. The analysis and measurement unit is configured to process the at least one small bandwidth signal and the at least one wide bandwidth signal. Further, a method of analyzing a radio frequency signal is described.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: December 22, 2020
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Marcel Thraenhardt, Thomas Braunstorfinger, Georg Schnattinger
  • Patent number: 10830867
    Abstract: A radar unit (400) for detecting an existence of interference is described that includes: a millimetre wave (mmW) transceiver (Tx/Rx) circuit configured support a normal data acquisition mode of operation that comprises transmitting a radar signal waveform and receiving an echo signal thereof; a mixed analog and baseband circuit operably coupled to the mmW Tx/Rx circuit; and a signal processor circuit (452) operably coupled to the mixed analog and baseband circuit. An interference detection unit (448) is operably coupled to the mmW Tx/Rx circuit. The radar unit is configured to operate a time-discontinuous mode of operation that includes a first time portion used as an interference monitoring period and a second time portion used by the radar unit in the normal data acquisition mode of operation, whereby the mixed analog and baseband circuit, signal processor circuit (452) and interference detection unit (448) are configured to detect interference signals during the monitoring period.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: November 10, 2020
    Assignee: NXP B.V.
    Inventor: Yu Lin
  • Patent number: 10771293
    Abstract: Systems and methods for automatic level control (ALC) are provided.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 8, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Marco Parrucci, Enrico Maria Fabbri, Samuele Brighenti
  • Patent number: 10749729
    Abstract: A circuit includes an AGC adaptation circuit configured to receive a first signal generated based on an AGC output signal from an AGC circuit. The AGC circuit applies an AGC gain to an AGC input signal to generate the AGC output signal. The AGC adaptation circuit determines an observed value of the first signal, and determines a AGC adaptation step size based on the observed value and a predetermined target value associated with the first signal. The AGC adaptation circuit provides a second signal to adjust the AGC gain of the AGC circuit using the AGC adaptation step size.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: August 18, 2020
    Assignee: Xilinx, Inc.
    Inventors: Alan C. Wong, Hong Sik Ahn, Edward Lee, Christopher J. Borrelli
  • Patent number: 10698072
    Abstract: In an example, a method for correcting time-of-flight measurements includes receiving a plurality of time-of-flight measurements and determining whether the time-of-flight measurements relate to a strong signal client, a weak signal client, or a preferred signal client. If the time-of-flight measurements relate to a strong signal client or a weak signal client, the method determines whether the time-of-flight measurements constitute two distinct distributions. If the time-of-flight measurements constitute two distinct distributions, a mean value for each distribution is determined. If the mean values differ by a predetermined time delay attributable to automatic gain control processing, the time-of-flight measurements corresponding to the distribution having the lower mean value are used. If the mean values differ by less than the predetermined time delay attributable to automatic gain control processing, the time-of-flight measurements corresponding to both distributions are used.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: June 30, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Souvik Sen, Dongho Kim
  • Patent number: 10651953
    Abstract: A wireless communication device includes an antenna to receive a signal, a low noise amplifier, and circuitry that determines the power level of the signal. The circuitry also determines whether the signal includes a packet, and causes the low noise amplifier to amplify the signal when the signal includes a packet and the power level of the signal is below a threshold. The circuitry also causes the low noise amplifier to be bypassed when the signal does not include a packet, or the power level of the signal is above the predetermined threshold and the signal includes a packet.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 12, 2020
    Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
    Inventors: Marcellus Forbes, Vijay Sundararajan, Arya Behzad, Bijoy Bhukania, Rishabh Agarwal
  • Patent number: 10652009
    Abstract: Efficient codeword synchronization methods and systems for fiber channel protocol are disclosed. The method includes identifying a codeword boundary by detecting 100-bit known patterns in a bit codeword in a transmission.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: May 12, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yang Fan Liu, Kai Yang, Jilei Yin, Zhao Qing Zheng
  • Patent number: 10644909
    Abstract: A device includes a selection circuit that is configured to generate a bias level. The device also includes a combinational circuit coupled to the selection circuit. The combinational circuit is configured to generate a distortion correction factor used offset inter-symbol interference from a data stream on a distorted bit based on the bias level to generate a correction signal. The device additionally includes a latching element coupled to the combinational circuit and configured to receive the first correction signal.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: May 5, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Raghukiran Sreeramaneni, Jennifer E. Taylor
  • Patent number: 10623079
    Abstract: A base station includes a processor. The processor is configured to transmit, to each of terminal devices, a data signal and a reference signal used for demodulating the data signal while the data signal and the reference signal are spatially multiplexed, by forming a plurality of beams while using a plurality of antenna elements. The processor is configured to calculate an index value related to correlation among the terminal devices, on a basis of propagation path information between any of the terminal devices subject to the spatial multiplexing. The processor is configured to assign the reference signals to the terminal devices subject to the spatial multiplexing in accordance with the index values among the terminal devices.
    Type: Grant
    Filed: December 16, 2018
    Date of Patent: April 14, 2020
    Assignee: FUJITSU LIMITED
    Inventor: Shinya Kumagai
  • Patent number: 10581474
    Abstract: Wireless receivers and related methods with interferer immunity are disclosed. The receiver includes a receive (RX) front-end, a power level detector, and an automatic gain controller (AGC). The RX front-end includes circuit(s) having variable gains, and the power level detector outputs a power level indicator. The AGC receives the power level indicator and outputs the gain settings to the variable-gain circuits within the RX front-end. Further, the AGC is configured to adjust the gain settings within a first gain range when not receiving data frames and to adjust them within a second gain range when receiving data frames. The second gain range is a restricted version of the first gain range. Further, the AGC can be configured to detect and store gain settings within a sliding time window when data frames are not being received and to use these stored gain settings to determine the second gain range.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: March 3, 2020
    Assignee: NXP B.V.
    Inventors: Sebastien Robert, Fabian Riviere, Franck Bisson, Nguyen Trieu Luan Le
  • Patent number: 10560927
    Abstract: [Object] To provide a mechanism capable of efficiently operating vast millimeter-wave band resources. [Solution] Provided is an apparatus that operates a small cell, the apparatus including: a processing unit configured to improve a downlink quality of a unit frequency band used in the small cell by limiting resources used for downlink transmission.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 11, 2020
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Takano
  • Patent number: 10530609
    Abstract: Provided are a wireless communication apparatus and a channel estimation methods of the wireless communication apparatus. The channel estimation methods includes receiving a first sub-frame and a second sub-frame, the first sub-frame including a plurality of first reference signals pre-coded based on a first pre-coding matrix and the second sub-frame including a plurality of second reference signals pre-coded based on a second pre-coding matrix; determining whether the first pre-coding matrix and the second pre-coding matrix are the same, based on a channel variation in the time domain; and performing, in response to determining that the first pre-coding matrix and the second pre-coding matrix are the same, channel estimation with respect to a resource element included in the second sub-frame based on at least of the plurality of first reference signals and at least one of the plurality of second reference signals.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: January 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-ho Kim, Hyun-seung Joo, In-hyoung Kim, Young-seok Jung
  • Patent number: 10496587
    Abstract: An apparatus includes an interface and a plurality of impedance branches. The interface may be configured to receive a data signal and a plurality of selection signals. The plurality of impedance branches may comprise a group of branches and a separated branch. The plurality of impedance branches may be configured to adjust an impedance value and a gain of a data path for the data signal in response to the selection signals. The group of branches may be controlled in response to the selection signals to select the impedance value and a first gain value in a first mode. The separated branch may replace one of the plurality of impedance branches in the group of branches in response to the selection signals to select a second gain value in a second mode.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: December 3, 2019
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Yi Xie, Yue Yu, Yuan Zhang, Yu Min Zhang
  • Patent number: 10484996
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A base station operation method in a wireless communication system, according to an embodiment of the present invention, comprises the steps of: determining, on the basis of channel information received from each of a plurality of terminals, power to be used by each of the plurality of terminals with respect to resources allocated to be overlaid and used by the plurality of terminals; and transmitting resource information, which comprises information about the determined power, to each of the plurality of terminals.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: November 19, 2019
    Assignees: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and Technology
    Inventors: Sunheui Ryoo, Nam-I Kim, Sung-Jin Park, Dong-Ho Cho
  • Patent number: 10484029
    Abstract: A receiver of signals likely to be disturbed by an interfering signal, the receiver includes an interference rejection filter comprising a multiplying gain applied respectively to an in-phase channel and an in-quadrature channel of a signal received by the receiver, the value of the multiplying gain being determined by a nonlinear function Ki(?) of the modulus ? of the received signal, the function Ki(?) being determined so as to maximize the signal-to-noise ratio after application of the multiplying gain and demodulation of the received signal.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: November 19, 2019
    Assignee: THALES
    Inventors: Nicolas Martin, Jean-Michel Perre, Nicolas Bastien
  • Patent number: 10462757
    Abstract: Disclosed herein is a method for automatic gain control based on signal spectrum sensing. Spectral sensing techniques may be employed to detect the presence or absence of interference and also determine a frequency location of the interference and power level estimates of a desired signal. The method includes running an algorithm to measure the energy periodically to track the changes as blockers that were not prominent while experiencing deep fade and those that will affect performance when it is out of the deep fade. The method enables predicting a level of degradation for various front-end settings and enables selection of an optimum setting. In an embodiment, the spectral sensing may be performed either in analog domain using narrowband tunable filters. In an embodiment, the spectral sensing may be performed digitally using Fast fourier transform (FFT), Goertzel algorithm, or power detection techniques.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: October 29, 2019
    Inventors: Aravind Ganesan, Himamshu Gopalakrishna Khasnis
  • Patent number: 10447400
    Abstract: A gain level control circuit in a wireless distribution system (WDS) is provided. The digital level control circuit receives a number of first digital communications signals having a number of first digital amplitudes and generates a number of second digital communications signals having a number of second digital amplitudes. When a selected second digital amplitude approaches a full-scale digital amplitude represented by a predefined number of binary bits, the gain level control circuit determines a selected first digital communications signal having a selected first digital amplitude causing the selected second digital amplitude to exceed the full-scale digital amplitude and adjusts the selected first digital amplitude to reduce the selected second digital amplitude to lower than or equal to the full-scale digital amplitude.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: October 15, 2019
    Assignee: Corning Optical Communications LLC
    Inventor: Dror Harel
  • Patent number: 10447427
    Abstract: A receiver frontend having a high-frequency AC-coupled path in parallel to a low-frequency feed-forward path for baseline correction. The low-frequency path blocks the DC common-mode voltage of the input differential signal pair, but passes low-frequency differential signal components (e.g., long strings of a single value, or disparities in the number of 1's and 0's over a long period of time.) The low-frequency path can include a passive network for level shifting and extending the range of acceptable common-mode input voltages. The low-frequency path can also include a differential (e.g., transconductance) amplifier to isolate the common-mode input voltage from the output of the baseline wander correction circuit.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 15, 2019
    Assignee: Rambus Inc.
    Inventor: Reza Navid
  • Patent number: 10439669
    Abstract: Disclosed is an electronic device that includes first and second radio modules using the same radio frequency band. The electronic device includes a first and second programmable radio attenuator and is arranged for: (1) determining a value of attenuation associated with each radio module according to a maximum power acceptable to the radio module, a transmission power of the other radio module and isolation between the first and second radio interfaces, (2) determining, for each radio module, a value of a quality indicator of a communication established with said radio module, and, when, for a radio module, the value of the quality indicator is higher than a predetermined threshold value that's dependent on the value of the attenuation associated with the radio module and a minimum power acceptable to the radio module, and (3) programming the radio attenuator corresponding to the value of the attenuation associated with the radio module.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: October 8, 2019
    Assignee: SAGEMCOM BROADBAND SAS
    Inventor: Romain Dejardin
  • Patent number: 10432434
    Abstract: Systems and methods directed towards reducing noise introduced into a signal when processing the signal are discussed herein. In embodiments a signal may initially be split by a multiplexer into two or more frequency bands. Each of the frequency bands can then be forwarded through an assigned channel. One or more channels may include an amplifier to independently boost the signal band assigned to that channel prior to a noise source within the assigned channel. This results in boosting the signal band relative to noise introduced by the noise source. In some embodiments, a filter may also be implemented in one or more of the channels to remove noise from the channel that is outside the bandwidth of the signal band assigned to that channel. Additional embodiments may be described and/or claimed herein.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 1, 2019
    Assignee: Tektronix, Inc.
    Inventors: John J. Pickerd, Kan Tan, Pirooz Hojabri
  • Patent number: 10404448
    Abstract: A communication device includes a sampler configured to sample an input signal, wherein the sampler is configured to generate a sampled value for each sampling time of a sequence of sampling times, a sequence value generator configured to generate an output value for each sampling time of the sequence of sampling times based on the sampled values, wherein the sequence value generator is configured to set the output value for a sampling time based on the sampled value for the sampling time and based on a limitation of the difference between the output value for the sampling time and the output value for the preceding sampling time in the sequence of sampling times, and an edge detector configured to detect an edge in the input signal based on the output values.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: September 3, 2019
    Assignee: Infineon Technologies AG
    Inventors: Marco Bucci, Raimondo Luzzi
  • Patent number: 10341892
    Abstract: The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. The method by which a transmission terminal transmits a reference signal for interference measurement in a wireless communication system supporting FDR, according to one embodiment of the present invention, comprises the steps of: a transmission terminal configuring a measurement subframe for measuring inter-device interference; mapping a preamble to the measurement subframe; and transmitting, to a reception terminal, a reference signal through the measurement subframe to which the preamble has been mapped.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: July 2, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Kwangseok Noh, Jaehoon Chung, Genebeck Hahn, Eunjong Lee, Jinmin Kim, Kukheon Choi
  • Patent number: 10299228
    Abstract: The technology described herein enhances the operation of a wireless Radio Frequency (RF) system to dynamically modify Automatic Gain Control (AGC) based on RF characteristics of a received data signal. In one implementation, a method of operating a wireless RF system includes receiving a data signal and applying AGC based on AGC thresholds. The method further includes determining an RF characteristic of the data signal, determining signal inflections and signal magnitudes of the RF characteristic during a time window, and comparing the signal inflections and signal magnitudes to an AGC signal inflection threshold and AGC signal magnitude threshold, respectively. The method further provides widening the AGC thresholds if the signal inflections and signal magnitudes exceed the AGC inflection and magnitude thresholds, respectively.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: May 21, 2019
    Assignee: Sprint Communications Company L.P.
    Inventors: Andrew Mark Wurtenberger, Sreekar Marupaduga
  • Patent number: 10248427
    Abstract: A semiconductor device includes one or more internal circuits; a nonvolatile memory circuit including a first region suitable for storing first data for the nonvolatile memory circuit and a second region suitable for storing second data for the internal circuits; a first register suitable for temporarily storing the first data; one or more second registers suitable for temporarily storing the second data; and a control circuit suitable for controlling the nonvolatile memory circuit to transmit the first data and the second data to the first register and to the second registers, respectively, when a boot-up operation is performed.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 2, 2019
    Assignee: SK hynix Inc.
    Inventor: Kang-Seol Lee
  • Patent number: 10237100
    Abstract: Methods and systems for digitization of broadband analog signals may comprise in a radio frequency (RF) transceiver comprising a diplexer, first and second automatic gain and slope control (ASCS) modules, and a combiner): receiving an input RF signal comprising at least two signals, splitting the input RF signal in the frequency domain into first and second signals of different frequency utilizing the diplexer, configuring a frequency-dependent gain level for each of the first and second signals utilizing the first and second ASCS modules, and combining output signals from the first and second ASCS modules utilizing the combiner. The frequency dependent gain levels of the first and second signals may be configured to enable an ADC receiving the combined signal to operate with an effective number of bits (ENOB) of approximately 10.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: March 19, 2019
    Assignee: Entropic Communications LLC
    Inventors: Branislav Petrovic, Itzhak Gurantz
  • Patent number: 10237725
    Abstract: A receiver for digital signals includes a radiofrequency stage. A feedback loop controls a variable attenuation resistance applied to a modulated radiofrequency signal passing through the radiofrequency stage as a function of a comparison of an amplitude of the modulated radiofrequency signal with a reference value. A baseband stage includes an RC network cascaded to the radiofrequency stage and coupled to a baseband detector that generates the baseband signal. The feedback loop includes a circuit for detecting a range of variation of the comparison. The value of the variable resistance is controlled as a function of an end value (e.g., maximum or minimum) of the detected range of variation.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: March 19, 2019
    Assignee: STMicroelectronics S.r.l.
    Inventors: Ranieri Guerra, Roberto Larosa, Giuseppe Palmisano
  • Patent number: 10230926
    Abstract: The present invention provides a wireless video signal transmitter, a receiver, a transmission system and a display system, which relates to the technical field of WiGig wireless transmission. According to an embodiment of the present invention, the wireless video signal transmitter comprises a frequency multiplication unit and a wireless transmitting unit. The frequency multiplication unit is operable to implement the frequency multiplication of a video signal, so as to obtain a first signal and transmit the first signal to the wireless transmitting unit. The wireless transmitting unit is operable to process the first signal to obtain a second signal suitable for wireless transmission, and to transmit the signal wirelessly. The display system of the present invention may receive and process the ultra high-definition video signal processed and transmitted by the wireless video signal transmission system.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: March 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE MULTIMEDIA TECHNOLOGY CO., LTD.
    Inventors: Peng Cheng, Shuhuan Yu
  • Patent number: 10200002
    Abstract: Systems, devices, and techniques for performing peak detection are described. A described receiver includes a first amplifier to amplify an input signal to generate a first amplified signal; a mixer to downconvert the first amplified signal to generate a downconverted signal; a second amplifier to amplify the downconverted signal to generate a second amplified signal; a filter, being selectably engageable by the receiver, a peak detector configured to perform voltage measurements of the second amplified signal; and switch circuitry. The switch circuitry is configured to selectably disengage the filter during a first measurement phase during which a first voltage measurement performed by the peak detector is indicative of an output voltage swing of the first amplifier, and to selectably engage the filter during a second measurement phase during which a second voltage measurement performed by the peak detector is indicative of an output voltage swing of the second amplifier.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: February 5, 2019
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Shadi Youssef, Renaldi Winoto
  • Patent number: 10193583
    Abstract: An RF tuner is described for handling RF signals in a broad frequency range and a broad power range while maintaining high linearity and tolerating high power blockers. A continuous feedback loop comprising a substantially linear LNA and an RF RSSI can adjust the power of the RF signal on the RF side. A substantially linear, variable gain transconductor may convert and amplify the voltage of the RF signal to a current signal. The converted signal may be down converted and filtered to an IF or baseband signal. An IF or baseband RSSI may measure the power of the down converted and filtered signal. The measured power may be compared against a preferred value to adjust the amplification of the transconductor.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: January 29, 2019
    Assignee: SiTune Corporation
    Inventors: Vahid Mesgarpour Toosi, Mohammad Bagher Vahidfar, Saeid Mehrmanesh
  • Patent number: 10181906
    Abstract: A gain level control circuit in a wireless distribution system (WDS) is provided. The digital level control circuit receives a number of first digital communications signals having a number of first digital amplitudes and generates a number of second digital communications signals having a number of second digital amplitudes. When a selected second digital amplitude approaches a full-scale digital amplitude represented by a predefined number of binary bits, the gain level control circuit determines a selected first digital communications signal having a selected first digital amplitude causing the selected second digital amplitude to exceed the full-scale digital amplitude and adjusts the selected first digital amplitude to reduce the selected second digital amplitude to lower than or equal to the full-scale digital amplitude.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 15, 2019
    Assignee: Corning Optical Communications Wireless Ltd
    Inventor: Dror Harel
  • Patent number: 10178587
    Abstract: The present disclosure relates to systems, methods, and non-transitory computer-readable media for offloading data packets from a first radio access network to a second radio access network. The method comprises monitoring first values of first performance parameters of the first radio access network at different instants of time prior to a predetermined transmission time interval. Then the second values of the one or more first performance parameters are predicted based on the first values. Further, the second values are compared against corresponding predetermined threshold values of the one or more first performance parameters and based on the comparison offloading of the data packets are triggered.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: January 8, 2019
    Assignee: WIPRO LIMITED
    Inventors: Saptarshi Chaudhuri, Irfan Baig, Guruprasad Irappa Naik
  • Patent number: 10175655
    Abstract: An apparatus is provided which comprises: a first clock line to provide a first clock; a second clock line to provide a second clock; a delay line having a plurality of delay cells, wherein the delay line is coupled to the first and second clock lines, wherein the first clock is to sample the second clock; and circuitry coupled to the delay line, wherein the circuitry is to determine first or latest edge transitions from the outputs of the plurality of delay cells.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: January 8, 2019
    Assignee: Intel Corporation
    Inventors: Tarun Mahajan, Dheeraj Shetty, Ramnarayanan Muthukaruppan
  • Patent number: 10176041
    Abstract: A method is disclosed for performing LDPC soft decoding of data stored in a flash storage device. Upon occurrence of a hard read failure, one or more retries with soft decoding after each retry are performed until soft decoding is successful or a maximum iteration count is reached. For each retry thresholds for sensing a level of a cell are adjusted according to a specific sequence. Likewise, the LLR table for each retry is selected from pre-determined LLR tables each corresponding to a retry attempt and the thresholds used for the retry attempt. The LLR table is not adjusted between retries or based on outcomes of any retries. A step size by which thresholds adjusted may be tuned to improve performance.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: January 8, 2019
    Assignee: Tidal Systems, Inc.
    Inventors: Yingquan Wu, Armin Banaei
  • Patent number: 10177730
    Abstract: A packet-based radio receiver (10) comprises an automatic gain control system (17) and a signal-level detector (18, 19, 20) for monitoring an analog signal derived from radio signals received by the radio receiver. The signal-level detector (18, 19, 20) comprises a binary memory cell (22, 24) and a monitoring system. The monitoring system comprises a comparator (21, 23) arranged to receive a reference voltage at a first input and the analog signal at a second input. The monitoring system is arranged to (i) continuously monitor the voltage of the analog signal, (ii) detect when the monitored signal exceeds the reference voltage, and (iii) store a predetermined binary value in the memory cell (22, 24) in response to such a detection. The automatic gain control system (17) is arranged to control the gain of a variable-gain component (12, 13, 14) of the radio receiver in dependence on the contents of the binary memory cell (22, 24).
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 8, 2019
    Assignee: Nordic Semiconductor ASA
    Inventor: Phil Corbishley
  • Patent number: 10172101
    Abstract: Embodiments herein relate to a method performed by a first network node for enabling at least one second network node to perform a transmission in a wireless communications network. The first network node and the at least one second network node performs transmissions using contention-based transmission resources of the same frequency. The first network node determines an indication of a maximum transmit power for the transmission by the at least one second network node to be used by the at least one second network node when the contention-based transmission resources of the same frequency is available for transmissions by the first network node in the wireless communications network. Then, the network node transmits the determined indication of a maximum transmit power to the at least one second network node. Embodiments of the first network node are also described.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: January 1, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Kazmi, Chrysostomos Koutsimanis
  • Patent number: 10097224
    Abstract: An AGC circuit for a radio receiver includes a detector converting a high frequency signal into a baseband signal. To reduce generation of a DC offset, the AGC circuit includes: a variable gain amplifier having an amplifier circuit and a high-pass filter, the amplifier circuit amplifying the baseband signal with a variable gain and the high-pass filter coupled to the amplifier circuit and having a cut-off frequency which is variable; a controller supplying a gain control signal; and a blocker temporarily blocking the high frequency signal. Using the block control signal, the controller causes the blocker to start blocking the high frequency signal, before the cut-off frequency of the high-pass filter is switched from high to low.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 9, 2018
    Assignee: SOCIONEXT INC.
    Inventors: Koichiro Tanaka, Takeaki Watanabe
  • Patent number: 10044470
    Abstract: Representative implementations of devices and techniques provide communication between networked nodes operating on a communication network medium. In an implementation, a node generates a broadcast frame that includes at least a preamble and a payload. The preamble of the broadcast frame may include supplemental information. The supplemental information may be associated with one or more symbols of the preamble. The supplemental information may contain predetermined header information for use by nodes operating on the communication network medium.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: August 7, 2018
    Assignee: Lantiq Deutschland GmbH
    Inventors: Vladimir Oksman, Joon Bae Kim
  • Patent number: 10039066
    Abstract: This automatic gain control circuit is provided with a variable gain amplifier for amplifying a received signal, has a small circuit size, and makes it possible to reduce the effect of superimposed external noise input within the frequency bandwidth of a received signal. The automatic gain control circuit supplies the output of the variable gain amplifier to an analog/digital converter and comprises: a frequency selection circuit that is connected to the output of the analog/digital converter and that selects a signal within the frequency bandwidth of a received signal, said signal having a narrower bandwidth than the frequency bandwidth; and a control signal generation circuit that generates a control signal for the variable gain amplifier on the basis of the strength of the signal selected by the frequency selection circuit.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: July 31, 2018
    Assignee: NEC SPACE TECHNOLOGIES, LTD.
    Inventors: Satoko Kawakami, Susumu Kumagai
  • Patent number: 10014904
    Abstract: Disclosed is a system for mitigating co-channel interference (CCI) caused due to narrow multiband signal in white space (WS) modems. The system includes a base-station that includes a base-station transmitter and a base-station receiver. The base-station receiver receives an orthogonal frequency division multiplexing signal (OFDM) from one or more customer premises equipment (CPE) transmitters. An interference detection module detects a presence of co-channel interference in carriers of the OFDM signal and determines co-channel interference affected carriers. A dynamic notch filter module receives the central interference carriers from interference detection module and mitigates the co-channel interference of co-channel interference affected carriers without affecting frame detection capability of the system.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: July 3, 2018
    Inventors: Sudeep Mirpadi Anand, Shrinivas Subramania Bhat, Anindya Saha
  • Patent number: 10003478
    Abstract: A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal generator generates wireless packet including a short-preamble sequence used for a first automatic gain control (AGC), a first long-preamble sequence, a signal field used for conveying a length of the wireless packet, an AGC preamble sequence used for a second AGC to be performed after the first AGC, a second long-preamble sequence, and a data field conveying data. The AGC preamble sequence is transmitted in parallel by the plurality of antennas.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: June 19, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tsuguhide Aoki, Daisuke Takeda, Takahiro Kobayashi, Yasuhiko Tanabe
  • Patent number: 9917607
    Abstract: Embodiments include systems and methods for baseline wander correction gain adaptation in receiver circuits. Some embodiments operate in context of an alternating current coupled transceiver communicating data signals over a high-speed transmission channel, such that the receiver system includes an AC-coupled data input and a feedback loop with a data slicer and an error slicer. A baseline wander correction (BWC) circuit can be part of the feedback loop and can generate a feedback signal corresponding to low-pass-filtered bits data from the data slicer output and having a gain generated according to pattern-filtered error data from the error slicer output. For example, gain adaptation is performed according to error information corresponding to a detected relatively high-frequency data pattern following a long low-frequency pattern.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: March 13, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Xun Zhang, Dawei Huang, Jianghui Su, Chaitanya Palusa
  • Patent number: 9917670
    Abstract: A communication device receives a trigger frame from an access point, the trigger frame configured to prompt the communication device to simultaneously transmit with one or more other communication devices as part of a multi-user uplink transmission. The communication device determines carrier frequency offset (CFO) information based on the trigger frame, and transmits the CFO information to the access point in response to the trigger frame so that the access point can use the CFO to process the multi-user uplink transmission.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: March 13, 2018
    Assignee: Marvell International Ltd.
    Inventors: Hongyuan Zhang, Rui Cao
  • Patent number: 9853752
    Abstract: Embodiments of a method and a system for generating a received signal strength indicator (RSSI) value that corresponds to a radio frequency (RF) signal are disclosed. In an embodiment, a method for generating an RSSI value that corresponds to an RF signal involves obtaining an attenuation factor code in response to applying an automatic gain control (AGC) operation to the RF signal, obtaining an analog-to-digital converter (ADC) code in response to applying an ADC operation to a signal that results from the AGC operation, and combining the attenuation factor code and the ADC code to generate an RSSI value. Other embodiments are also described.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 26, 2017
    Assignee: NXP B.V.
    Inventors: Jingfeng Ding, Helmut Kranabenter, Stefan Mendel, Gernot Hueber, Josef Zipper
  • Patent number: 9820141
    Abstract: A receiver for digital signals includes a radiofrequency stage. A feedback loop controls an amplitude of a modulated radiofrequency signal passing through the radiofrequency stage as a function of a comparison of a baseband signal with a reference value. A baseband stage includes an RC network cascaded to the radiofrequency stage and coupled to a baseband detector that generates the baseband signal. The feedback loop includes a circuit for detecting a range of variation of the comparison. The amplitude of the modulated radiofrequency signal is controlled as a function of an end value (e.g., maximum or minimum) of the detected range of variation. A switching circuit operates to selectively short circuit a resistive component of the RC network during receiver start-up.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 14, 2017
    Assignee: STMicroelectronics S.r.l.
    Inventors: Ranieri Guerra, Roberto Larosa, Giuseppe Palmisano
  • Patent number: 9807712
    Abstract: A method for dynamic sizing of a blocker margin by a receiver automatic gain control (AGC) is described. The method includes measuring a wanted signal level and a blocker signal level. The method also includes adjusting a linear target for the wanted signal level at the output of an analog-to-digital converter (ADC) of the receiver based on the blocker signal level. The linear target is adjusted to optimize a wanted signal signal-to-noise ratio (SNR) and the blocker margin. The method further includes adjusting a receiver front-end gain based on the adjusted linear target.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: October 31, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Yann Ly-Gagnon, Le Nguyen Luong
  • Patent number: 9800279
    Abstract: Examples provide a method of performing automatic gain control (AGC) in a wireless receiver, the method including computing, by an energy detection (ED) circuit, a variance in an output signal of an analog-to-digital converter (ADC), and activating, by the ED circuit, an AGC circuit to adjust a gain of at least one component in a radio frequency integrated chip (RFIC) in response to the variance exceeding a threshold. Examples also provide for a wireless receiver that implements such a method.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: October 24, 2017
    Assignee: Samsung ELectronics Co., Ltd.
    Inventors: Ashutosh Deepak Gore, Jinesh P. Nair, Chang Soon Park, Kiran Bynam, Seok Ju Yun, Young Jun Hong
  • Patent number: 9799961
    Abstract: A compensation circuit in a MIMO system includes a phase shifting circuit and an attenuation circuit. The phase shifting circuit includes a plurality of phase shifters coupled in parallel which apply compensation to signals. The attenuation circuit includes a plurality of attenuators coupled in parallel to apply compensation to signals.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: October 24, 2017
    Assignees: NANNING FUGUI PRECISION INDUSTRIAL CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Kwo-Jyr Wong