With Indicator Patents (Class 375/228)
  • Patent number: 10425311
    Abstract: A packet monitoring apparatus includes a memory and a processor configured to capture a plurality of packets transmitted through a communication line and belonging to a first session, specify capturing time intervals between the plurality of packets, acquire, from each of the plurality of packets, a clock number of clocks generated by a transmission apparatus and counted when each of the plurality of packets is transmitted from the transmission apparatus, specify a difference of the clock numbers between each of the plurality of packets and a packet captured immediately prior to each of the plurality of packets, specify a frequency of the clock based on the specified capturing time interval and the specified difference, and specify a jitter of the capturing time intervals based on the specified capturing time interval, the specified frequency, and the specified difference.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: September 24, 2019
    Assignee: FUJITSU LIMITED
    Inventor: Junichi Higuchi
  • Patent number: 10382186
    Abstract: In a centralized radio access network, a system in a remote radio unit combines signals from multiple radios and independently attenuates uplink and downlink signals for multiple antennas connected to the multiple radios. The system includes two or more antennas; a radio set including a first analog front end configured for a first channel of a first frequency band and a second analog front end configured for a second channel of a second frequency band; and a signal combining and conditioning (SCC) unit coupled in series between the radio set and the two or more antennas. The SCC unit includes downlink passive attenuators for downlink signals from the radio set to each of the two or more antennas and uplink passive attenuators for uplink signals from each of the two or more antennas to the radio set.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: August 13, 2019
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Francisco X. Sevilla R., Ronald A. Goldschmidt
  • Patent number: 10180927
    Abstract: A device to process data packets for communication across PHY layers which are of different respective communication protocols. In an embodiment, the device includes a first protocol stack and a second protocol stack which are each for a PCIe™ communication protocol. The first protocol stack and a second protocol stack may interface, respectively, with a first physical (PHY) layer and a second PHY layer of the device. The first protocol stack and the second protocol stack may exchange packets to facilitate communications via both the first PHY layer and the second PHY layer. In another embodiment, the first PHY layer is for communication according to the PCIe™ communication protocol and the second PHY layer is for communication according to another, comparatively low power communication protocol.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 15, 2019
    Assignee: Intel Corporation
    Inventors: Akshay G. Pethe, Mahesh Wagh, Manjari Kulkarni
  • Patent number: 10090941
    Abstract: A remote apparatus includes: a plurality of sub amplification units amplifying radio frequency (RF) signals of different frequency bands, respectively; a test signal generation unit generating test signals of a frequency band for any one sub amplification unit among the plurality of sub amplification units; a conversion unit converting intermodulation (IM) signals generated in response to the test signals into a plurality of conversion IM signals by using a conversion signal of which a frequency is swept; and a control unit determining a degree of an intermodulation distortion by the any one sub amplification unit based on signal levels of the plurality of the conversion IM signals.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: October 2, 2018
    Assignee: SOLiD, INC.
    Inventor: Youngju You
  • Patent number: 10090982
    Abstract: Certain aspects of the present disclosure relate to a technique for communicating Channel State Information (CSI) feedback. In some aspects, the CSI feedback is communicated in a very high throughput (VHT) wireless communications system.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: October 2, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Santosh Paul Abraham, Simone Merlin, Sameer Vermani, Hemanth Sampath
  • Patent number: 9900248
    Abstract: A user station for a bus system implementing broadband CAN communication includes: a communication control device for creating or reading at least one message for/from at least one further user station of the bus system, in which exclusive, collision-free access of a user station to a bus of the bus system is ensured at least intermittently; and a data interleaving device for interleaving data packets of at least two messages into a single message, so that the data packets are situated in one data segment of the single message. The single message has a shared outer frame header for the data packets in front of the data segment and a shared outer frame end for the data packets after the data segment.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: February 20, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventor: Patrick Nickel
  • Patent number: 9837066
    Abstract: A system and method for adaptive active noise reduction measure the acoustic response for each user to adaptively adjust and customize the ANR operation using adaptive filters to correct for any differences between the measured response and a targeted response. The system and method of various embodiments incorporate a closed loop control system with a feedforward input. The acoustic measurement and adaptation procedure is performed to adapt or tune at least one of the closed loop and feedforward control loops to provide adaptive ANR customized for each user and current ambient environment.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: December 5, 2017
    Assignee: Light Speed Aviation, Inc.
    Inventor: Michael J. Wurtz
  • Patent number: 9804224
    Abstract: An integrated circuit comprises a first functional unit and one or more other functional units. The first functional unit has an input for receiving data and an output for providing data. The integrated circuit tests and operates the first functional unit. Testing comprises: connecting the input of the first functional unit to the output of the first functional unit, thereby generating a loopback path from the output of the first functional unit to the input of the first functional unit; loading a test pattern onto the first functional unit; feeding a test clock signal comprising one or more clock edges, thereby prompting the first functional unit to transform the test pattern; and reading the transformed test pattern. Operating the first functional unit comprises: connecting the input of the first functional unit to an output of the other functional units; and feeding a normal clock signal to the first functional unit.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: October 31, 2017
    Assignee: NXP USA, Inc.
    Inventors: Eyal Melamed-Kohen, Ilan Cohen, Shlomi Sde-Paz
  • Patent number: 9781709
    Abstract: Rank indicator and channel quality indicator (CQI) estimation and reporting functionalities are discussed with regard to heterogeneous networks to reduce the number of inconsistent CQI estimates transmitted to an evolved node B (eNB), where the CQI is defined as inconsistent when the rank indicator, on which the CQI is conditioned, is from a different subframe type than the subframe on which the CQI is to be estimated.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: October 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Alan Barbieri, Tingfang Ji
  • Patent number: 9753823
    Abstract: A data processing system has a system bus, an analog-to-digital converter (ADC), a signal processor, a memory, compression and packing units, and a debug unit. The ADC samples a baseband signal, and provides a digitized signal representative of the baseband signal the system bus. The signal processing block converts the digitized signal to a processed signal in the frequency domain. The memory is coupled to the system bus and is for storing the processed signal. The compression unit is coupled to the system bus and is for capturing the processed signal and compressing the processed signal to produce a compressed signal. The packing unit is coupled to the compression unit and is for packing the compressed signal to produce a packed signal. The debug unit is coupled to the packing unit and is for converting the compressed and packed signal to a diagnostic message. The disclosed data processing system and method provides diagnostic messages in near real-time.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: September 5, 2017
    Assignee: NXP USA, INC.
    Inventor: Curtis L. Hillier
  • Patent number: 9584203
    Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas. According to one embodiment of the present invention, a method for transmitting channel status information, CSI, for a downlink transmission through uplink comprises: generating a rank indicator (RI), a first precoding matrix indicator (PMI), a second PMI anc channel quality indicator (CQI) as the CSI for the downlink transmission; and transmitting at least one of the RI, the first PMI, the second PMI and the CQI according to a predetermined order, wherein, when the RI or the first PMI is dropped, the CSI following the dropped CSI is generated based on a RI or a first PMI transmitted previously, wherein a precoding matrix used for the downlink transmission is determined based on a combination of the first PMI and the second PMI.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: February 28, 2017
    Assignee: LG Electronics Inc.
    Inventors: Hyunsoo Ko, Jaehoon Chung, Moonil Lee
  • Patent number: 9571142
    Abstract: An apparatus to detect interference in wireless signals, comprising an antenna for receiving a wireless signal; and wherein the apparatus is operable to identify a dominant waveform in the received signal; subtract the dominant waveform from the received signal to create a modified received signal; and repeat the above steps, recursively substituting the modified received signal for the received signal, until all adjusted reference waveforms have been subtracted.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: February 14, 2017
    Assignee: ANRITSU COMPANY
    Inventors: Kee-dyi Huang, Bhaskar Thiagarajan, Randy L Lundquist, Vaidyanathan Venugopal
  • Patent number: 9571308
    Abstract: Systems and methods for high speed communications are described herein. In certain aspects, the systems and methods include innovative transceiver architectures and techniques for re-timing, multiplexing, de-multiplexing and transmitting data. The systems and methods can be used to achieve reliable high-speed point-to-point communication between different electronic devices, computing devices, storage devices and peripheral devices.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: February 14, 2017
    Assignee: ClariPhy Communications, Inc.
    Inventors: Marcel Louis Lugthart, Jeffrey Zachan, Linghsiao Jerry Wang, Paul Voois, Neel H. Patel, Norman L. Swenson, Scott Powell
  • Patent number: 9532235
    Abstract: A spacecraft, having a satellite receiver, that is configured so that the direction of the downlink beams transmitted from the satellite receiver depends on the location of the uplink signals transmitted from the ground and not the attitude of the spacecraft in space.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: December 27, 2016
    Assignee: The Boeing Company
    Inventor: Michael A. Whelan
  • Patent number: 9491858
    Abstract: This wiring board is provided with: a plurality of metal wires disposed upon an insulating substrate; and a transparent adhesive agent layer which is disposed upon the metal wires, and which is in direct contact with the metal wires. The metal wires include: a first metal wire which has a pulse signal supplied thereto; and a second metal wire which has a fixed electric potential applied thereto. The pulse signal has a reference level identical to the fixed electric potential, and has a pulse train in which a plurality of pulses having a pulse width of not more than 3 msec are arranged, the integral time of the pulses in a period of 600 seconds being less than 60 seconds.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: November 8, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Yasushi Endo, Nobuyuki Tada, Kenji Naoi, Tomohito Asai, Hideo Ikeda, Michihiro Shibata
  • Patent number: 9391815
    Abstract: A management data area including a plurality of pulsed signals is provided in a series of pulsed signals outputted from the main station to the common data signal line, the area being different from a control/monitoring data area including data of a control data signal and data of a monitoring data signal. The substation sets random number data generated by its own station as an original number, generates pieces of comparison/collation data having a plurality of bits based on the original number, and superimposes a signal including the pieces of comparison/collation data on the management data area. The main station determines existence of address overlap of the substations based on a result of comparing the pieces of comparison/collation data complying with a predetermined rule.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 12, 2016
    Assignees: Mitsubishi Electric Corporation, ANYWIRE CORPORATION
    Inventors: Shigeru Hiroi, Mitsuhiro Tsunoo, Kenji Nishikido, Youichi Hoshi, Kazuo Itani, Hidemi Yamazaki
  • Patent number: 9307431
    Abstract: Rank indicator and channel quality indicator (CQI) estimation and reporting functionalities are discussed with regard to heterogeneous networks to reduce the number of inconsistent CQI estimates transmitted to an evolved node B (eNB), where the CQI is defined as inconsistent when the rank indicator, on which the CQI is conditioned, is from a different subframe type than the subframe on which the CQI is to be estimated.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: April 5, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Alan Barbieri, Tingfang Ji
  • Patent number: 9215047
    Abstract: It is an object to provide signal processing device and method by use of wireless communication, which is capable of analyzing status of the wireless communication in detail at a later date, compressing a wireless signal such that it can be reproduced, and reproducing the compressed signal to perform its re-reception. The signal processing device includes a reception processing unit that performs reception processing of a received signal wirelessly, a signal recording unit that records the signal, a signal compression unit that compresses an information amount of the received signal, and a signal output unit that stores the received signal that has been compressed or outputs the same to an external device.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: December 15, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Ryota Yamazaki, Ken Takei, Tsutomu Yamada
  • Patent number: 9161256
    Abstract: Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: October 13, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eko N. Onggosanusi, Runhua Chen, Tarik Muharemovic
  • Patent number: 9148796
    Abstract: A resilient antenna disturbance detector is provided. A signal generator generates an unclonable integrity test signal. The antenna reflects a signal in response to the integrity test signal. A comparator determines whether the reflected signal matches the integrity test signal and a controller signals the disturbance of the antenna to a monitoring device if the energy level of the reflected signal is greater than a predetermined threshold and the reflected signal matches the integrity test signal. The detector provides the advantage of preventing an external receiver and transmitter from predicting and transmitting the integrity test signal to the antenna to interfere with disturbance detection. Also provided is a security system with resilient antenna disturbance detection.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: September 29, 2015
    Assignee: NINVE JR. INC.
    Inventor: Benoit Leveille
  • Patent number: 9059774
    Abstract: The present invention relates to a tilt correction method and a corresponding apparatus for correcting tilt of RF signals in a wanted channel having a predetermined frequency range, in a signal path of a communication equipment, wherein the RF signals are down-converted to an intermediate frequency of an IF domain. The method comprises the steps of: providing a predetermined RF signal having a particular frequency to the signal path, detecting an output signal in the intermediate frequency (IF) domain and outputting a detection result, repeating the providing step and the detecting step for plural RF signals of different frequencies within the channel frequency range, determining the tilt of the RF signals in the frequency range by comparing the detection results, and correcting the tilt to obtain a minimized tilt of the wanted channel depending upon the determined tilt.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: June 16, 2015
    Assignee: NXP, B.V.
    Inventors: Vincent Rambeau, Frederic Mercier, Luca Lo Coco
  • Patent number: 9036753
    Abstract: A method for calibrating mismatches of an in-phase signal path and a quadrature signal path of a transmitter, including: additionally configuration at least one mixer calibration coefficient at a transmitting part of the transmitter; obtaining at least one mixer testing signal from the transmitting part via loopback for spectrum analysis to derive at least one mixer spectrum analysis result; adjusting the mixer calibration coefficient of the transmitting part according to the mixer spectrum analysis result; and additionally utilizing an in-phase signal path finite impulse response filter and a quadrature signal path finite impulse response filter to calibrate mismatches between a low pass filter of the in-phase signal path of the transmitting part of the transmitter and a low pass filter of the quadrature signal path of the transmitting part of the transmitter. A similar mismatch calibration operation may be applied to a receiver.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: May 19, 2015
    Assignee: Realtek Semiconductor Corp.
    Inventors: Yuan-Shuo Chang, Ching-Chia Cheng
  • Patent number: 9036758
    Abstract: A method and apparatus for detecting an envelope are provided. The method and apparatus may detect an envelope of a modulating signal based on a low calculation complexity and a simple circuit configuration, by detecting an envelope for a plurality of sampling signals with equal time intervals.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: May 19, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung Keun Yoon, Ui Kun Kwon, Sang Joon Kim
  • Publication number: 20150117506
    Abstract: An impedance tuner system, usable in a measurement system including at least one measurement system device, the tuner system comprising the impedance tuner having a signal transmission line, and an impedance-varying system coupled to the transmission line, and responsive to command signals to selectively vary the impedance presented by the impedance tuner. An impedance tuner controller is configured to generate the command signals, and wherein measurement device drivers and at least one of characterization, calibration and measurement algorithms are embedded into the tuner controller, the tuner controller configured to allow a user to control execution of said at least one of the characterization, calibration and measurement algorithms using the tuner controller.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Gary R. Simpson, Steven M. Dudkiewicz
  • Patent number: 9014238
    Abstract: A method and apparatus of synchronizing pulsed wireless communication between a first transceiver and a second transceiver. It includes the steps of transmitting a pulse signal from a first transceiver to a second transceiver; transmitting a reflection signal from the second transceiver to the first transceiver if the transmitted pulse signal is received at the second transceiver within an active reception period of the second transceiver; and detecting the reflection pulse to determine synchronization between the first transceiver and the second transceiver. Embodiments of the invention also relate to an apparatus for carrying out the method. In one embodiment, the reflection signal is generated by a super-regenerative oscillator.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: April 21, 2015
    Assignees: Nokia Corporation, Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Joni Jantunen, Jarmo Arponen, Iiro Jantunen, Michaël Pelissier, Bertrand Gomez, Jaakko Varteva
  • Patent number: 8995517
    Abstract: The present invention relates to a device for the location of passive intermodulation faults in a coaxial cable network. The test apparatus (100) according to one embodiment of the present invention utilizes a pair of high-power, frequency-synthesized, unmodulated RF carriers v1(t) (101) and v2(t) (102) are generated inside the HPA module of the apparatus. The power and frequency of v1(t) (101) and v2(t) (102) can be independently set to a range of values, v1(t), v2(t) are combined inside the instrument and then applied to the input of the device under test (DUT). The PIM signals (107,108,109) generated in the DUT are combined to produce the primary PIM signal vIM(t) (103). The apparatus also includes two receivers (110,111, 112,113,114,115) for the detection of vIM(t) 103 and vREF(t) (104). These signals are downconverted to 455 kHz.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: March 31, 2015
    Assignee: Kaelus Pty Ltd
    Inventors: Greg Delforce, Brendan Horsfield
  • Patent number: 8989244
    Abstract: A receiver is provided that receives signals from a device under test (DUT) for one or more modes of operation. For each mode, the system detects beacon transmission signals from the DUT, and counts the number of beacons for a period of time. If the count is not consistent with an expected count, e.g. a stored value, the system may preferably provide an output to indicate that there is a problem with the DUT. If the count is consistent with the expected count, the system may preferably perform further testing for other modes of operation. If the count output of the DUT is consistent with expected counts over each of the operation modes, the system may provide an indication that the DUT has passed the beacon tests.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 24, 2015
    Assignee: NETGEAR, Inc.
    Inventors: Joseph Amalan Arul Emmanuel, Jonathan M. Hummel, Shahrokh M. Zardoshti
  • Patent number: 8989248
    Abstract: To detect a victim signal in an ultra wideband communication system, fast Fourier transform of a received signal including a plurality of time symbols is performed to generate a signal including a plurality of frequency symbols, it is determined whether a first signal is present in a first region of the signal, and if a first signal is present, the first signal is detected as a first victim signal. Next, an error signal is generated based on the signal including the plurality of frequency symbols, it is determined whether a second signal is present in a second region of the error signal, and if a second signal is present, the second signal is detected as a second victim signal.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 24, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Cheol-ho Shin
  • Patent number: 8989246
    Abstract: A clock and data recovery circuit with built in jitter tolerance test is disclosed. Imposing jitter on a filter inside a CDR loop to cause phase disturbances to the clock and data recovery circuit, thereby to test the jitter tolerance of the clock and data recovery circuit. Accordingly, IC test cost is significantly reduced by increasing few circuit sizes.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: March 24, 2015
    Assignee: Realtek Semiconductor Corp.
    Inventor: Pei-Si Wu
  • Patent number: 8976850
    Abstract: Provided is a channel state information (CSI) sharing method and apparatus in a Multiple User Multiple Input Multiple Output (MU-MIMO) environment. Each node may use network-coding to reduce overhead necessary for sharing CSI between all nodes in the MU-MIMO environment. A transmitter may dynamically select, based on the CSI between receivers, a path used for transmitting data to each receiver and a receiver to be used as a relay based on the global CSI. A decoding performance may be improved based on the CSI between the transmitter and the receivers.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 10, 2015
    Assignees: Samsung Electronics Co., Ltd., Purdue Research Foundation
    Inventors: Bruno Clerckx, Jun Il Choi, Taejoon Kim, Obadamilola Aluko, David J. Love
  • Patent number: 8964824
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 24, 2015
    Assignee: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Publication number: 20150049796
    Abstract: An approach for the graphic display of I/Q values of a baseband signal by means of a constellation diagram is provided. The approach comprises: selecting a subset of I/Q values from a set of I/Q values of a baseband signal, wherein the non-selected I/Q values of the set form a non-selected subset; calculating a frequency of occurrence of each I/Q value of the selected subset; assigning display information to each I/Q value of the selected subset, wherein the display information at least corresponds to the respective frequency of occurrence; and displaying, on a display device, the set of I/Q values of the baseband signal in a constellation diagram, based at least in part on the display information, wherein the I/Q values of the non-selected subset is displayed in a different manner from the I/Q values of the selected subset.
    Type: Application
    Filed: August 9, 2014
    Publication date: February 19, 2015
    Inventor: Jochen KRAUS
  • Publication number: 20140369395
    Abstract: In one embodiment, a radio receiver has a first downconverter, a second downconverter, first and second analog-to-digital converters, and an error detector. The first downconverter downconverts a received RF signal into a first baseband-frequency signal using a first downconversion technique, and the second downconverter downconverts the received signal into a second baseband-frequency signal using a second downconversion technique, different from the first downconversion technique. The first and second analog-to-digital converters convert the first and second baseband-frequency signals into first and second baseband digital signals, respectively. The error detection logic detects errors in at least one of the first and second baseband digital signals based on a comparison of the first baseband digital signal to the second baseband digital signal.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventor: Roger A. Fratti
  • Publication number: 20140369396
    Abstract: Provided is a wired communication apparatus which communicates using a cable. The wired communication apparatus includes: a signal output unit and a bi-directional low-speed communication unit which transmit data to the cable; and a cable characteristic determining unit which measures the capacitance of the cable, and determines whether the cable is normal or abnormal according to the measured capacitance.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 18, 2014
    Applicant: FUNAI ELECTRIC CO., LTD.
    Inventor: Hideyuki TANAKA
  • Patent number: 8885696
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: November 11, 2014
    Assignee: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Publication number: 20140321522
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Applicant: DGS GLOBAL SYSTEMS, INC.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Patent number: 8873610
    Abstract: The first and second outputs of a signal generation system are coupled to the first and second inputs of a signal digitizing system via respective electrical conductors. A controller directs the generation system to generate a first calibration signal, and the digitizing system responsively captures a first set of vector samples. The conductors are then reconfigured so they connect the first and second outputs of the generation system respectively to the second and first inputs of the digitization system. The controller then directs the generation system to generate a second calibration signal, and the digitizing system responsively captures a second set of vector samples. The controller or other processing agent computes gain and/or phase impairments using the first and second vector sample sets. Digital filter parameters may be computed based on the computed impairment(s), and used to correct the impairment(s) of the generation system and/or the digitizing system.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: October 28, 2014
    Assignee: National Instruments Corporation
    Inventor: Stephen L. Dark
  • Publication number: 20140314135
    Abstract: Disclosed in the present invention is a vector signal analyzer, which relates to communication technology. The vector signal analyzer comprises: a radio frequency front end splitting module, for splitting the received signals to at least, two signals; an analog signal processing module, for performing radio frequency/micro wave processing and analog-digital conversion for each signal separately; a digital signal processing module, fir performing spectrum analyze and signal demodulation analyze separately for each digital signals, which are outputted from the analog signal processing module.
    Type: Application
    Filed: October 22, 2012
    Publication date: October 23, 2014
    Applicant: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD
    Inventors: Tao Duan, Xiaoyu Lei, Hongwei Wang
  • Patent number: 8867597
    Abstract: The present invention discloses a clock dejitter method comprising: a data sending adapter module inputting data with a system clock and using a sending clock to send data; a clock dejitter module associating the system clock with the sending clock of the data sending adapter module using; and the clock dejitter module tracking variations in the system clock and a data enable signal reflecting data sending state by referring to the system clock, and dynamically generating the sending clock varying with the data sending state. The present invention also discloses a clock dejitter apparatus and a data transmission system. The present invention greatly improves the free scheduling processing ability of services and reduces the bit error rate of data transmission while increasing efficiency of large capacity data switch transmission by dynamically adjusting the sending clock.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: October 21, 2014
    Assignee: ZTE Corporation
    Inventor: Xiaoyi Wei
  • Publication number: 20140269877
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Application
    Filed: November 18, 2013
    Publication date: September 18, 2014
    Applicant: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Publication number: 20140269875
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Application
    Filed: June 7, 2013
    Publication date: September 18, 2014
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Patent number: 8837568
    Abstract: A method of transmitting feedback information in a wireless communication system includes transmitting a channel quality indicator (CQI) for a first frequency band and transmitting a precoding matrix indicator (PMI) and a rank for a second frequency band that is wider than the first frequency band. Overhead incurred by transmission of feedback information such as CQI, PMI and a rank may be reduced.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: September 16, 2014
    Assignee: LG Electronics Inc.
    Inventors: Bong Hoe Kim, Dong Wook Roh, Dong Youn Seo
  • Patent number: 8824588
    Abstract: Systems, processes, and structures provide near-field transmit power measurement for MIMO wireless devices (DUT), such as for any of product development, product verification, and/or production testing. A test signal, such as comprising a pulse train signal, is provided to a MIMO device under test (DUT), wherein portions of the test signal controllably steered and sequentially transmitted from each of the device antennas, to one or more test antennas that are positioned in close proximity to the MIMO DUT. The near-field power of the received test signals is measured, to quickly and efficiently determine if one or more data streams of the MIMO DUT has a problem.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: September 2, 2014
    Assignee: Netgear, Inc.
    Inventors: Joseph Amalan Arul Emmanuel, Jonathan M. Hummel
  • Patent number: 8824536
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: September 2, 2014
    Assignee: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Publication number: 20140219326
    Abstract: The present invention relates to a wireless communication system, and more specifically, to a method and a device for reporting channel state information. According to one embodiment of the present invention, a method for allowing a terminal to report channel state information (CSI) in a wireless communication system comprises the steps of: reporting a rank indicator (RI); dropping a report of a precoding matrix indicator (PMI) after the RI has been reported; and reporting a channel quality indicator (CQI) after the PMI report has been dropped. Here, a rank value corresponding to the RI may be a changed rank value compared to a rank value corresponding to the most recently reported RI before the RI report. Furthermore, the CQI can be determined on the basis of another precoding matrix, rather than a precoding matrix corresponding to the dropped PMI.
    Type: Application
    Filed: September 28, 2012
    Publication date: August 7, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyunsoo Ko, Jaehoon Chung, Minseok Noh
  • Patent number: 8780966
    Abstract: A method for testing data packet reception characteristics, such as sensitivity and throughput, of a data packet signal transceiver. By monitoring responsive data packet signals returning from a device under test (DUT), it can be determined whether and when the DUT has successfully received valid data packets, received faulty data packets, received valid data packets in a faulty manner, or not received valid data packets. When any of such events are detected, the stimulus data packet signals can be provided in such a manner as to determine whether possible DUT reception problems are related to power level, duration or data rate of the stimulus data packet signals, or to circuitry within DUT without requiring external controls over or querying of the DUT.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 15, 2014
    Assignee: Litepoint Corporation
    Inventors: Christian Volf Olgaard, Ruizu Wang
  • Patent number: 8780968
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: July 15, 2014
    Assignee: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Patent number: 8774257
    Abstract: A method of tuning a driving current of a data transmission interface includes: utilizing a driving current with a present current value to continuously send a test data to a receiving end; accumulating a number of times that the test data is sent to generate a transmission counting result; determining whether a transmission error occurs while the test data is sent to the receiving end and accumulating a number of times that the transmission error occurs to generate a transmission error counting result; and when the transmission counting result reaches a predetermined value, determining how to tune the present current value of the driving current according to the transmission error counting result.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: July 8, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventors: Kuang-Yu Yen, Chih-Hung Tsai
  • Patent number: 8761325
    Abstract: A clock generator generates a clock signal used for sampling a received signal by a comparator which compares the received signal to a reference. A phase shifter adjusts the phase of the first clock signal and a controller adjusts the phase of the clock signal to maximize the vertical eye opening of the signal at the sampling time. In an example embodiment, the phase of the clock signal is adjusted in a first direction and a measure of vertical eye opening of the signal is compared to a previous measure. If the measure of vertical eye opening has increased the signal another phase adjustment is made in the same direction and if the vertical eye opening of the signal has decreased a further phase adjustment in the opposite direction is made. By increasing the vertical eye opening of the signal the signal-to-noise ratio of the received signal is improved.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: June 24, 2014
    Inventors: Ben Willcocks, Chris Born, Miguel Marquina, Andrew Sharratt, Allard Van Der Horst
  • Patent number: RE47463
    Abstract: A wireless communication system includes a number of base stations capable of communicating with a plurality of subscriber stations. The base station coordinates transmission of resource blocks with a transmission of resource blocks from a second base station. The resource blocks include at least one reference signal (RS) patterns. In addition, base station punctures a plurality of resource elements in the resource blocks that might overlap with one of the CRS patterns in another resource block transmitted by the second base station such that no data is transmitted in the plurality of punctured resource elements. The subscriber station receives the resource blocks from at least two base stations and can avoid reading data from the resource elements that might overlap.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: June 25, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lingjia Liu, Jianzhong Zhang