Network Synchronizing More Than Two Stations Patents (Class 375/356)
  • Patent number: 10651793
    Abstract: Techniques are described for reducing frequency pulling in voltage-controlled oscillator (VCO) circuits. Some embodiments operate in context of a transmitter having a VCO and a power amplifier (PA), where resonant components of the VCO are impacted by magnetically coupled feedback from resonant components of the PA. The VCO and PA are coupled via a set of signal path components that cause signal path delay, such that the feedback signal is phase-delayed with respect to the signal generated by the VCO. A coupling delay matching system is used to introduce additional delay, thereby further phase-shifting the feedback signal to an integer multiple of the oscillation period of the VCO signal; thereby reducing frequency pulling of the VCO.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 12, 2020
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Ahmed Emira, Faisal Hussein
  • Patent number: 10574186
    Abstract: Techniques are described for reducing frequency pulling in voltage-controlled oscillator (VCO) circuits. Some embodiments operate in context of a transmitter having a VCO and a power amplifier (PA), where resonant components of the VCO are impacted by magnetically coupled feedback from resonant components of the PA. The VCO and PA are coupled via a set of signal path components that cause signal path delay, such that the feedback signal is phase-delayed with respect to the signal generated by the VCO. A coupling delay matching system is used to introduce additional delay, thereby further phase-shifting the feedback signal to an integer multiple of half of the oscillation period of the VCO signal; thereby reducing frequency pulling of the VCO.
    Type: Grant
    Filed: December 8, 2018
    Date of Patent: February 25, 2020
    Assignee: SHENZHEN GOODIX TECHNOLOGYCO., LTD.
    Inventors: Ahmed Emira, Faisal Hussein
  • Patent number: 10554323
    Abstract: An optical reception apparatus (1) of the present invention includes: a local oscillator (11) outputting local oscillation light (22); an optical mixer (12) receiving a multiplexed optical signal (21) and the local oscillation light, and selectively outputting an optical signal (23) corresponding to the wavelength of the local oscillation light from the multiplexed optical signal; a photoelectric converter (13) converting the optical signal (23) output from the optical mixer into an electric signal (24); a variable gain amplifier (15) amplifying the electric signal (24) to generate an output signal (25) whose output amplitude is amplified to a certain level; a gain control signal generating circuit (16) generating a gain control signal (26) for controlling the gain of the variable gain amplifier (15); and a monitor signal generating unit (17) generating a monitor signal (27) corresponding to the power of the optical signal (23) using the gain control signal (26).
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: February 4, 2020
    Assignee: NEC Corporation
    Inventor: Yusuke Yamauchi
  • Patent number: 10505653
    Abstract: The present disclosure describes methods and apparatuses for fine timing measurement with frequency domain processing. In some aspects, a first device receives a frame that is transmitted by a second device via a wireless medium. A degree to which the frame is affected by multipath propagation in the wireless medium is determined based on frequency power and linear phase of the frame, which can be calculated using frequency domain processing. Based on the degree to which the frame is affected, a time of arrival calculation for the frame can be compensated for effects related to the multipath propagation. By so doing, the effects of multipath propagation can be addressed without time domain processing, which is typically complex and more expensive to implement.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: December 10, 2019
    Assignee: Marvell International Ltd.
    Inventors: Christian R. Berger, Niranjan Grandhe, Sudhir Srinivasa
  • Patent number: 10425135
    Abstract: In a coordinated multipoint system, geographically distributed base transceiver stations employ overlapping coverage areas in a Radio Access Network (RAN) to serve multiple User Equipments (UEs). A fronthaul network communicatively couples the base transceiver stations to a central processor. The central processor comprises a cooperative multiple-input, multiple-output (MIMO) processor configured to select multiple antennas residing on multiple ones of the base transceiver stations to serve each of the UEs; compute baseband pre-coding weights for signals to be transmitted by the antennas, the baseband pre-coding weights computed from RAN channel state information between the antennas and the UEs; and coordinate transmissions of pre-coded signals from the antennas to exploit multipath in the RAN to coherently combine at each of the UEs. Since each UE can be provided with its own localized coherence zone, this enables the UEs to concurrently employ the same frequency spectrum.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: September 24, 2019
    Assignee: Genghiscomm Holdings, LLC
    Inventor: Steve Shattil
  • Patent number: 10405287
    Abstract: A signal is emitted by an unrelated, non-cooperating party. The SA scans this spectrum, and selects and filters to a portion of the signal emitted. The SA, using its internal clock, time tags a sequence of peaks of the time domain of the filtered signal. The SA sends (over the internet or other method) the time tagged peaks, frequency and location of the emission to the IN. The IN receives the message from the SA. It compares the peaks with its own data, collected using its local antenna at the specified frequency. The IN uses its location, and the location encoded in the message, to compute the different time of arrival of the signal, and uses the locally found peaks at that frequency to determine a “phase shift.” The phase shift is used to calculate the local clock skew. The SA repeats step 2, selecting a different frequency.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: September 3, 2019
    Inventors: Alberto Daniel Lacaze, Karl Murphy
  • Patent number: 10341946
    Abstract: In order to improve cell detection in NR, a user equipment apparatus performs a PSS search on a first frequency raster from a group of frequency rasters. When the UE detects a PSS on the first frequency raster corresponding to a PSS hypothesis, the UE searches for an SS on a second frequency raster based at least on part on the detected PSS hypothesis on the first frequency raster. The UE may search for a plurality of hypotheses of the SS corresponding to the detected PSS hypothesis on the first frequency raster and the second frequency raster. The second frequency raster may be selected from the group of frequency rasters based at least in part on the detected PSS hypothesis or the first frequency raster on which the PSS was detected.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: July 2, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Navid Abedini, Sundar Subramanian, Muhammad Nazmul Islam, Tao Luo, Bilal Sadiq, Hung Ly, Heechoon Lee, Haitong Sun
  • Patent number: 10299266
    Abstract: A wireless device network comprises: an unsynchronized wireless device in a time division multiple access based system; and a cognitive master in communication with the device, wherein the master processor is configured to: determine a number of time slots required for the master to transmit a message to and receive a response from the device, each time slot is a portion of a radio frequency spectrum over a frame period; when the number of time slots required are consecutively available, broadcast an announcement message indicating start of discovery of the unsynchronized device; wherein the device processor is configured to: generate a response message including a device ID; and broadcast the response message to the master; wherein the master processor is configured to: generate a correction factor based on at least one of a master transmit time and a master received time; and broadcast the correction factor to the device.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 21, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Steven L. Timm, Kelly P. Muldoon, Michael R. Franceschini
  • Patent number: 10236993
    Abstract: A transmission apparatus that produces, generates and/or transmits a unipolar signal representative of an original bipolar signal having one or more data frames, wherein each of the one or more frames of the original bipolar signal are converted into and/or transmitted as a plurality of unipolar portions, frames or frame portions of one or more information streams; and the transmission apparatus is configured to concurrently transmit the one or more information streams and at least one other information stream. Preferably, the different information streams are transmitted simultaneously on the same channel/link. Advantageously, one or more of the information streams are optionally arranged such that the interference due to the at least one other information stream on the at least one information stream does not adversely affect the information carried in the at least one information stream. The present invention also includes a corresponding receiver, system device and methods.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: March 19, 2019
    Assignee: THE UNIVERSITY COURT OF THE UNIVERSITY OF EDINBURGH
    Inventors: Harald Haas, Dobroslav Tsonev
  • Patent number: 10206239
    Abstract: Disclosed is a relay for a simultaneous data transmission using multiple networks including: a connection control unit configured to control a terminal equipment to connect to multiple networks, when sensing entrance of the terminal equipment currently connected with a macro base station of the mobile communication network into simultaneous transmission service coverage serviced by the multiple networks, at least one of the multiple networks including at least one micro base station; and a relay processing unit configured to partition data transmitted or received to/from the terminal equipment into partial data corresponding to each of the multiple networks, and transmit and/or receive the partitioned partial data through each of the multiple networks.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: February 12, 2019
    Assignee: SK TELECOM CO., LTD.
    Inventors: Gyumin Lee, Jeongsu Kim
  • Patent number: 10168432
    Abstract: A distributed electromagnetic method synchronization system and method involving a satellite communication and navigation system. The method includes the following steps: the transmitter and the receiver establish connection with the satellite respectively to realize the position and time synchronization; the transmitter and the receiver acquire the second-pulse-signal, and according to the second-pulse-signal to adjust their own temperature compensation crystal, so that the frequency reaches the preset value; in the field of operation, the transmitter and receiver through the satellite mutual communication, timely adjustment of the operation process. In the above-mentioned way, the communication function can be set in one place to facilitate the timely adjustment of the data acquisition process so as to ensure the quality of the collected data and improve the efficiency of the field operation.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: January 1, 2019
    Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Yongyou Yang, Zhongxing Wang, Qingyun Di, Wenxiu Zhang, Binbin Chen, Renzhong Pei, Shujun Wu
  • Patent number: 10148411
    Abstract: The present disclosure provides a secure one-step IEEE 1588 clock using either a symmetric or asymmetric protection scheme. Clocks of mission-critical or highly-available devices in industrial automation systems connected to a communication network are synchronized by sending, by a master clock, a synchronization message, e.g., a single message of the one-step-clock type according to IEEE 1588, including a time stamp, and by receiving and evaluating, by a slave clock, the synchronization message. A synchronization component or module of the master clock prepares, or composes, prior to a projected send time, a synchronization message including a time stamp of the projected send time, and secures the synchronization message in advance of the projected send time. Securing the synchronization message occurs by suitable cryptographic means allowing for authentication of the time stamp at a receiving slave clock. At the projected send time, the secured synchronization message is transmitted.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: December 4, 2018
    Assignee: ABB Research Ltd
    Inventors: Hubert Kirrmann, Jean-Charles Tournier
  • Patent number: 10064148
    Abstract: Embodiments provided herein are directed to an ultra-wide broadband system configured to produce positioning estimates for a user device. To ensure the high quality of this positioning service, the ultra-wide broadband system is configured to prevent signal collision, and eliminate the need for inconvenient cable connections for base station deployment. Further, the one way communication nature of the ultra-wide broadband system enables low power operation of the user device.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: August 28, 2018
    Assignee: M2 Robots, Inc.
    Inventor: Peiqing Xia
  • Patent number: 10004979
    Abstract: Example apparatus and methods concern a first off-the-shelf device (e.g., game console, laptop) that may lack a sensor interacting with a second off-the-shelf device(s) (e.g., smart phone, tablet) that has a sensor. The first device may ask remote devices to expose sensors, may select a remote device and sensor to work with, may control communications between the devices and may use the sensor data provided by the second data to run an application on the first device. The application may be acquired from a consumer-oriented application repository, may require sensor data, and may run unmodified on the first device due to the availability of the sensor data from the second device. The combination of devices improves the capability of the first device, saves energy, and reduces computing complexity. A game console or application written for the game console may perform better using sensor data from a remote device.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: June 26, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Justin Ayers, George Roussos, Paul Wang, Chunshui Zhao
  • Patent number: 9973330
    Abstract: A technique includes (i) receiving a first pilot signal from a base station via a receiver of a client device, or (ii) transmitting a second pilot signal from the client device to the base station via a transmitter of the client device. First time differences and signal quality values for N samples of N respective packets in the first pilot signal are determined. Second time differences and signal quality values are received via the receiver. The second time differences and signal quality values are generated for M samples of M respective packets in the second pilot signal. An offset value is determined based on (i) the first time differences and signal quality values, or (ii) the second time differences and signal quality values. Activation or deactivation times of the receiver or the transmitter or transmission times of the transmitter are adjusted based on the offset value.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: May 15, 2018
    Inventors: Yuan Yuan, Carroll Gossett
  • Patent number: 9954363
    Abstract: A load controller is connected with a residential electric load to regulate electric power drawn by the load from a residential a.c. electric power distribution system via power input terminals of the load. A voltmeter is connected to measure voltage at the power input terminals, and an ammeter is connected to measure electric current at the power input terminals. A microprocessor or microcontroller is programmed to compute a source impedance of the power distribution system as seen from the power input terminals using measured voltage and electric current at the power input terminals. The source impedance may be computed by determining an equivalent source voltage as equal to measured voltage at the power input terminals when the electric current at the power input terminals is zero, and computing the source impedance from measured non-zero electric current at the power input terminals in combination with at least the equivalent source voltage.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: April 24, 2018
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Jason McCullough, Eric Rehberg
  • Patent number: 9948447
    Abstract: Provided is a communication apparatus usable for any case where a time synchronization function is necessary or unnecessary by attaching or detaching a synchronization model for realizing the time synchronization function. A clock generation unit, a logic circuit unit including a synchronization module monitoring unit, a clock selection unit, and a main circuit unit configured by a switch LSI are integrally formed on the same substrate, and the synchronization module is detachably mounted on the substrate via connectors. The connectors each have a mounting determination pin that indicates a different signal level depending on whether the synchronization module is mounted. The synchronization module monitoring unit monitors connection signals indicating signal levels of the mounting determination pin, and causes the clock selection unit to select a synchronization clock when the synchronization module is mounted, and an internal clock when the synchronization module is not mounted.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: April 17, 2018
    Assignee: APRESIA Systems, Ltd.
    Inventor: Daisuke Fujiu
  • Patent number: 9880902
    Abstract: A method begins by a processing module of a computing device receiving a most current revision value for a data element, where a revision value for the data element is generated based on a current time of a storing device. The method continues with the processing module generating a new revision value for a currently revised version of the data element based on a current time of the computing device and comparing the current time of the new revision value with the current time of the most current revision value. When the current time of the new revision value precedes the current time of the most current revision value, the method continues with the processing module adjusting the new revision value to produce an adjusted revision value and facilitating storage of the currently revised version of the data element having the adjusted revision value.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: January 30, 2018
    Assignee: International Business Machines Corporation
    Inventors: Andrew Baptist, Greg Dhuse, Ilya Volvovski, Jason K. Resch, Zachary J. Mark, Bart Cilfone
  • Patent number: 9859926
    Abstract: This disclosure relates to a devices and methods related to satellite information broadcasting. Example embodiments may include frequency shifting an intermediate frequency (IF) signal down-conversion from the microwave-band. As an example, down-conversion involving local oscillators may lead to frequency drift due to varying temperature and/or humidity conditions. Correcting for the frequency drift may provide an opportunity to remove or filter excess bandwidth. Further embodiments may include receiving, in a tuning request, information about a transponder type. A frequency translation module may be adjusted based, at least in part, on the transponder type related to the IF signal being input into the frequency translation module. Such frequency-shifting and transponder-specific filtering may allow Single-Wire Multiswitch (SWM) devices to provide output signals with narrower bandwidth, which may improve signal quality, cable run length, reduce power demands, etc.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: January 2, 2018
    Assignee: The DIRECTV Group, Inc.
    Inventors: Kushan Shah, Benjamin Mui
  • Patent number: 9801073
    Abstract: Self-coexistence of first and second wireless communication networks (200) is improved by transmitting a coexistence beacon from a first station (210, 220) of the first wireless communication network (200) to a first station (210, 220) of the second wireless communication network (200. The coexistence beacon includes information about a traffic reservation of the first station (210, 220) of the first wireless communication network (200). The first station (210, 220) of the second wireless communication network (200) may then use this information in a variety of ways to reduce data collisions between the two networks (200). It can communicate this information to a base station (210) of the second wireless communication network (200). The base station (210) of the second wireless communication network (200) can then use this information to more efficiently allocate frequency channels and/or time slots for future traffic reservations of the first station (220) of the second wireless communication network (200).
    Type: Grant
    Filed: September 16, 2006
    Date of Patent: October 24, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Carlos Cordeiro, Kiran Challapali
  • Patent number: 9801202
    Abstract: A system and method for charging a wireless device is described. A charging apparatus includes a power delivery circuit to provide power to the wireless device and a wireless radio to communicate wirelessly with the wireless device. For example, the information about the wireless device may include at least a device type. The charging apparatus further includes a controller to receive information about the wireless device via the wireless radio and to control an amount of current provided by the power delivery circuit, when powering the wireless device, based at least in part on the received information. For example, the controller may determine that the device type is one of a plurality of recognized device types and subsequently enable the power delivery circuit to provide an amount of current to the wireless device that is optimized for the device type.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: October 24, 2017
    Assignee: Uber Technologies, Inc.
    Inventor: Joshua Sakwa
  • Patent number: 9736271
    Abstract: Described herein are improved systems, methods, and devices for delivering and managing metadata in a distributed computing platform such as a content delivery network (CDN) so as to configure content servers to handle client requests. The teachings hereof provide, among other things, scalable and configurable solutions for delivering and managing metadata, preferably by leveraging dynamically obtained control information. For example, in one embodiment, a given content server may store metadata, e.g., in a configuration file, that references dynamic, late-bound control information for use in satisfying dependencies. This dynamic control information can be requested by the CDN content server, typically from a remote host, when needed to parse and execute the metadata.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 15, 2017
    Assignee: AKAMAI TECHNOLOGIES, INC.
    Inventors: Matthew J. Stevens, Frederick R. Shotton, Vaishnav Janardhan
  • Patent number: 9727306
    Abstract: A bi-synchronous electronic device may include a FIFO memory circuit configured to store data, and a first digital circuit coupled to the FIFO memory circuit and configured to operate based upon a first clock signal and a write pointer, write a data burst to the FIFO memory circuit, thereby causing a jump in the write pointer to a new position, and write a burst indicator associated with the new position in the FIFO memory circuit. The bi-synchronous electronic device may include a second digital circuit coupled to the FIFO memory circuit and configured to operate based upon a second clock signal different from the first clock signal, read from the FIFO memory circuit based upon a read pointer, and synchronize the read pointer to the write pointer based upon the burst indicator.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: August 8, 2017
    Assignee: STMicroelectronics S.r.l.
    Inventors: Giuseppe Guarnaccia, Salvatore Marco Rosselli
  • Patent number: 9697171
    Abstract: A method begins by a processing module of a computing device receiving a most current revision value for a data element, where a revision value for the data element is generated based on a current time of a storing device. The method continues with the processing module generating a new revision value for a currently revised version of the data element based on a current time of the computing device and comparing the current time of the new revision value with the current time of the most current revision value. When the current time of the new revision value precedes the current time of the most current revision value, the method continues with the processing module adjusting the new revision value to produce an adjusted revision value and facilitating storage of the currently revised version of the data element having the adjusted revision value.
    Type: Grant
    Filed: July 20, 2014
    Date of Patent: July 4, 2017
    Assignee: INTERNAITONAL BUSINESS MACHINES CORPORATION
    Inventors: Andrew Baptist, Greg Dhuse, Ilya Volvovski, Jason K. Resch, Zachary J. Mark, Bart Cilfone
  • Patent number: 9677908
    Abstract: An advanced metering infrastructure (AMI) system includes a meter data management system, an AMI network, a network communication module and metering devices. The AMI network connects to a reference time clock and the meter data management system. The network communication module connects to the AMI network and is in communication with the reference time clock via the AMI network. Each metering device is connected to the network communication module and has a metrology device and a communication module device. The communication module device provides clock adjustments to the metrology clock and/or its own clock. The metrology device provides clock adjustments to the communications module clock and/or its own clock. Methods for use in an advanced metering infrastructure (AMI) system provide clock adjustments.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: June 13, 2017
    Assignee: Aclara Technologies LLC
    Inventor: David Haynes
  • Patent number: 9571942
    Abstract: A hearing device includes: a processing unit; a filter; and a wireless receiver; wherein the processing unit is configured to determine a time difference between a start of the wireless receiver and a reception of a corresponding data packet from a transmitter; wherein the filter is configured to determine a time period as a function of a plurality of time differences that include the time difference determined by the processing unit; and wherein the processing unit is further configured to control the wireless receiver such that the wireless receiver is started in the time period before reception of a subsequent data packet from the transmitter.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: February 14, 2017
    Assignee: GN HEARING A/S
    Inventors: Brian Dam Pedersen, Karsten Filsø Jørgensen
  • Patent number: 9521599
    Abstract: The present invention relates to a method of, and device in the form of a radio access network supervising entity for, adapting to delay in a communication link established between the radio access network supervising entity and at least one radio base station communicating with a mobile terminal. The method comprises associating a target Connection Frame Number (CFN) to each transmitted data frame, said target CFN being calculated by offsetting an expected CFN with a counter value corresponding to a current communication link delay, repeatedly determining delay of the communication link, and adapting to the delay of the communication link by adjusting transmission time of the transmitted frame, and/or adjusting the target CFN of the transmitted frame, said target CFN being calculated by offsetting the expected CFN with a counter value corresponding to a determined new delay.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: December 13, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Aleksandar Jovanovic, Johan Magnusson, Fredrik Sonnevi
  • Patent number: 9485612
    Abstract: A method and an apparatus for providing a Peer-to-Peer (P2P) service in a wireless communication system. A method of a server for providing the P2P service includes receiving a P2P service request signal comprising information of contents desired by a particular Mobile Station (MS); selecting at least one MS from MSs having the contents; establishing a traffic path between the particular and the selected MS; and transmitting information of the selected MS to the particular MS.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: November 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Shin Park, Jung-Je Son, Ji-Cheol Lee, Se-Hoon Kim
  • Patent number: 9471121
    Abstract: An electronic system is disposed on a single integrated circuit including a plurality of power domains and a power control manager. Each power domain may be independently powered. The power control manager includes a set of control registers storing individual control bits, a power switch for each power domain and a programmable microprocessor. The programmable microprocessor controls the digital state of individual bits within the control registers thereby controlling the ON and OFF state of the corresponding power domain.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: October 18, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Arindam Saha, Ish Kumar Dham, Vijay Sarathy, William B Bonnett
  • Patent number: 9414253
    Abstract: A method of discarding logged measurements in a wireless communication system is provided. A user equipment in a Radio Resource Control (RRC) connected mode receives a Minimization of Drive Tests (MDT) configuration from a base station and starts a validity timer upon receiving the MDT configuration. The user equipment in an RRC idle mode logs measurements based on the MDT configuration to collect logged measurements while the validity timer is running. When the validity timer is expired, the user equipment discards the MDT configuration and starts a conservation timer. When the conservation timer is expired, the logged measurements are discarded.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: August 9, 2016
    Assignee: LG Electronics Inc.
    Inventors: Sung Hoon Jung, Sung Duck Chun, Seung June Yi, Young Dae Lee, Sung Jun Park
  • Patent number: 9377771
    Abstract: A numerical controller is chain-connected with a plurality of I/O units so that it transmits DI/DO signals to and receives DI/DO signals from the I/O units by master-slave communication. The numerical controller counts signals generated by a timer circuit up to a predetermined number and sets, from among the plurality of I/O units, an I/O unit with which transfer of the DI/DO signals is to be performed for each count value. The DI/DO signals of the set I/O units are transferred according to the count value.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: June 28, 2016
    Assignee: FANUC Corporation
    Inventors: Yoshito Miyazaki, Hiroshige Ando
  • Patent number: 9342471
    Abstract: A memory device that includes an input interface that receives instructions and input data on a first plurality of serial links. The instructions and input data are deserialized on the memory device, and are provided to a memory controller. The memory controller initiates accesses to a memory core in response to the received instructions. The memory core includes a plurality of memory partitions, which are accessed in a cyclic and overlapping manner. This allows each memory partition to operate at a slower frequency than the serial links, while properly servicing the received instructions. Accesses to the memory device are performed in a synchronous manner, wherein each access exhibits a known fixed latency.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: May 17, 2016
    Assignee: MoSys, Inc.
    Inventors: Michael J. Miller, Richard S. Roy
  • Patent number: 9306694
    Abstract: Methods, apparatus, and computer program products are disclosed for clock signal synchronization among computers in a network, including designating, as a primary clock signal for all the computers in a network, a clock signal from one of the computers in the network; providing the primary clock signal, simultaneously and in parallel, from the computer whose clock signal is designated as the primary clock signal to all the other computers in the network; and providing the primary clock signal, simultaneously and in parallel, from each computer in the network to all computers in the network through multiplexers and phase locked loops, with the primary clock signal locked in phase across all the computers by a phase locked loop on each computer.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: April 5, 2016
    Assignee: Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
    Inventors: Daniel N. de Araujo, James T. Hanna, James O. Nicholson, Bruce J. Wilkie
  • Patent number: 9287920
    Abstract: A circulator based transceiver sharing a common antenna between a receive signal path and a transmit signal path is disclosed. Techniques to reduce coupled transmit signals and coupled transmit noise in a receive signal path, implemented in a variety of embodiments is disclosed allowing elimination of a diplexer, simplification of circulator design and reduction of transceiver cost. The transceiver includes means to generate and couple a correction signal into the receive signal path to attenuate coupled transmit signal in the receive path. Furthermore, the transceiver includes echo cancellation techniques to attenuate transmit noise in the receive signal path. Methods to utilize the transceiver to attenuate coupled transmit signal and transmit noise may improve transceiver efficiency, for example, in demodulation techniques and processing of data signal.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: March 15, 2016
    Assignee: Broadcom Corporation
    Inventors: Yaacov Sturkovich, Igal Yahuda Kushnir, Ronen Shaked
  • Patent number: 9286855
    Abstract: Embodiments of an apparatus for implementing a display port interface are disclosed. The apparatus may include a source processor and a sink processor coupled through an interface. The sink processor may be operable to send a synchronization signal to the source processor through the interface. The source processor may be operable, dependent upon the synchronization signal, to send data to the sink processor.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: March 15, 2016
    Assignee: Apple Inc.
    Inventor: Brijesh Tripathi
  • Patent number: 9271171
    Abstract: A technique includes (i) receiving a first pilot signal from a base station via a receiver of a client device, or (ii) transmitting a second pilot signal from the client device to the base station via a transmitter of the client device. First time differences and signal quality values for N samples of N respective packets in the first pilot signal are determined. Second time differences and signal quality values are received via the receiver. The second time differences and signal quality values are generated for M samples of M respective packets in the second pilot signal. An offset value is determined based on (i) the first time differences and signal quality values, or (ii) the second time differences and signal quality values. Activation or deactivation times of the receiver or the transmitter or transmission times of the transmitter are adjusted based on the offset value.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: February 23, 2016
    Assignee: Google Inc.
    Inventors: Yuan Yuan, Carroll Philip Gossett
  • Patent number: 9258106
    Abstract: A communication apparatus (13) according to the present invention is provided with: a storage unit (131) that stored in advance difference information (1311), which is the difference between first time information (t1) and second time information (t2), said first time information (t1) being received from a synchronization source communication apparatus (11) as a time synchronization source connected to a transmission system (12) wherein transmission delay time is different depending on the direction of transmission, and said second time information (t2) obtained from a time synchronization origin (14) other than the transmission system (12); and a time synchronization means (132) that carries out, when the second time information (t2) cannot be obtained from the time synchronization origin (14), time synchronization with the synchronization source communication apparatus (11) using the difference information (1311) read out from the storage unit (131).
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: February 9, 2016
    Assignee: NEC Corporation
    Inventor: Takatoshi Ogawa
  • Patent number: 9253003
    Abstract: Frequency shifting a communications signal(s) in a multiple frequency (multi-frequency) distributed antenna system (DAS) to avoid or reduce frequency interference is disclosed. Related devices, methods, and DASs are disclosed. Non-limiting examples of frequency interference include frequency band interference and frequency channel interference. As a non-limiting example, frequency interference in a multi-frequency DAS may result from non-linearity of a signal processing component generating an out-of-band harmonic of a first, in-use communications signal in a first frequency band, within different frequency band(s) of other in-use communications signal(s). To avoid or reduce such interference, embodiments disclosed herein involve predicting frequency interference that may result from processing received, in-use communications signals in multiple frequency bands to be distributed in a multi-frequency DAS.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: February 2, 2016
    Assignee: Corning Optical Communications Wireless Ltd
    Inventor: Dror Harel
  • Patent number: 9247412
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives discovery resource information from a base station, sends a discovery signal based on the discovery resource information, and receives from at least one user equipment (UE) a request for relaying with the base station based on the discovery signal. The apparatus may also receive a discovery signal from a relay, and send to the relay a request for relaying with a base station based on the discovery signal. The apparatus may further receive a discovery signal from each of a plurality of relays, determine to select one of the plurality of relays based on the discovery signal from each relay, and send to a selected relay a request for relaying with a base station based on the discovery signal when one of the plurality of relays is determined to be selected.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: January 26, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Saurabha Rangrao Tavildar, Junyi Li, Libin Jiang, Bilal Sadiq
  • Patent number: 9232242
    Abstract: Techniques to automatically switch among video signals in a television broadcast are disclosed. A trigger decoder may receive a network video signal for a network program. The network video signal may be comprised of a video signal and a trigger control signal. The trigger control signal may comprise a time period indicative of how long until a station break is to occur within the network program. The trigger decoder may separate the video signal from the trigger control signal. A latency adjuster may determine a delay between the transmission of the network video signal and the reception of the network video signal. A master control switcher clock may be reset based on the delay. The master control switcher may receive the video signal for the network program, and one or more video signals from one or more video servers containing video content.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: January 5, 2016
    Assignee: CBS INTERACTIVE, INC.
    Inventor: James M. Chase
  • Patent number: 9214985
    Abstract: Aspects of the present disclosure are also directed towards a method that includes maintaining a transmission period which has a start time and an end time synchronized to metrological time. Further, this method, in response to the start time, begins transmission of a frame, which includes a plurality of symbols. This transmission occurs over power distribution lines that carry power using alternating current (AC). This method also includes synchronizing a transmission time for each symbol of the plurality of symbols according to a time-based parameter of the AC. In response to reaching an end of the frame, a synchronization symbol period is determined for a synchronization symbol, as a function of the transmission times, for the plurality of symbols and time from the end of the frame to the end time. The synchronization symbol is then transmitted on the power distribution lines.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: December 15, 2015
    Assignee: Landis+Gyr Technologies, LLC
    Inventors: Chad Wolter, Rolf Flen, Damian Bonicatto
  • Patent number: 9198210
    Abstract: There is stored a database of registration information associating UEs with cells under control of different network operators. In response to a inquiry from a first network operator that a first UE desires direct communications with a second UE, the registration information is used to coordinate between the first network operator and the second network operator to facilitate establishment of a direct communication link between the first UE and the second UE. In various embodiments the facilitating is enhancing the inquiry/page by adding a cell ID of the first UE's cell and adding pre-allocated radio resources in the first UE's cell for use by the second UE in responding to the page, and determining a single network which is not highly loaded and which can allocate resources for the D2D communications and directing one or both UEs to that single network.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: November 24, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Vinh V. Phan, Ling Yu, Kari Horneman, Sami-Jukka Hakola
  • Patent number: 9178640
    Abstract: User equipment (UE) associated with synchronous networks operate in a synchronous mode while UEs associated with asynchronous networks operate in an asynchronous mode. When operating in a synchronous mode, a UE can significantly improve performance of synchronization signal detection, data decoding, and tracking loop management by using the interference cancellation (IC) techniques that are not available in an asynchronous mode of operation. Obtaining synchronization indicators and determining the synchronization status of the current network by UE is disclosed. The determination may be based on the synchronization indicator, whether detected through signal detection, signal measurements, signal analysis, or the like.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: November 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Tao Luo, Taesang Yoo, Xiaoxia Zhang, Xiliang Luo, Ke Liu, Durga Prasad Malladi
  • Patent number: 9170869
    Abstract: Systems, methods, and apparatuses for error checking are disclosed. In one embodiment, an error checking system is used on a device that has a plurality of parallel data lanes as inputs. It may be desired to provide an error checking system with sufficient resolution to detect single-bit errors, determine how many bits are in error, and/or determine which bit(s) of a parallel data lane are in error. In one embodiment, the present disclosure provides for switchable error checking through the use of a multiplexor configured to select a particular data lane for error checking. This switchable error checking may provide benefits such as low cost, low power consumption, and/or low size.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: October 27, 2015
    Assignee: Oracle International Corporation
    Inventors: Paul Rotker, Bikram Saha, Jason Miller
  • Patent number: 9137763
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with enabling distributed frequency synchronization based on an average clock rate. In one example, a UE is equipped to receive a synchronization signal from each of one or more UEs, perform an averaging process to generate an average clock rate based at least on the received synchronization signals, and adjust an internal clock rate based on the average clock rate. In another example, a UE is equipped to adjust an internal clock rate of a UE based on timing information provided by a GPS, select a sequence to communicate a synchronization signal transmission from a subset of sequences reserved for GPS connected UEs, and transmit the synchronization signal based on the adjusted internal clock rate.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: September 15, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Saurabh R. Tavildar, Thomas J. Richardson, Junyi Li
  • Patent number: 9112626
    Abstract: A stratum-1 configuration for a timing network is defined. The stratum-1 configuration includes a single active stratum-1 server usable in ensuring that the servers in the network use the same primary reference time to synchronize their clocks. The servers in the network are synchronizing to the same root primary reference time and synchronization accuracy is not dependent on the quality of an external time source or of the existence of an external time source at the stratum-1 server.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: August 18, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Scott M. Carlson, Donald Crabtree, Dennis J. Dahlen, Denise M. Sevigny, Judith A. Wierbowski
  • Patent number: 9110860
    Abstract: A computing method includes accepting a notification of a computing task for execution by a group of compute nodes interconnected by a communication network, which has a given interconnection topology and includes network switching elements. A set of preferred paths, which connect the compute nodes in the group via at least a subset of the network switching elements to one or more root switching elements, are identified in the communication network based on the given interconnection topology and on a criterion derived from the computing task. The network switching elements in the subset are configured to forward node-level results of the computing task produced by the compute nodes in the group to the root switching elements over the preferred paths, so as to cause the root switching elements to calculate and output an end result of the computing task based on the node-level results.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: August 18, 2015
    Assignee: MELLANOX TECHNOLOGIES TLV LTD.
    Inventor: Yiftah Shahar
  • Patent number: 9106365
    Abstract: Particular embodiments are directed towards a method for communicating time-based data in a power line communication system. The communication system utilized in the method includes: a command center; a collector device; and a plurality of endpoint devices. The method includes communicating, from the collector device, downstream data to the plurality of endpoint devices. This downstream communication utilizes a communication protocol that is relative to a collector network time, and is over a set of power distribution lines carrying alternating current (AC). The collector network time uses the local oscillator. The AC zero-crossing event can be used as a time base for other versions of the network time. Conceptually, the AC can be thought of as acting as a reference clock for maintaining these other network times, although the clocking function can be carried out in the digital realm, e.g., using a digital-signal processor (DSP).
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 11, 2015
    Assignee: Landis+Gyr Technologies, LLC
    Inventors: Damian Bonicatto, Rolf Flen, Stuart L. Haug, Chad Wolter, Verne Olson
  • Patent number: 9088970
    Abstract: The present invention relates to a wireless communication system, More specifically, the present invention relates to a method and an apparatus for direct communication between terminals. The method for performing communication between terminals using a first terminal in a wireless communication system comprises the steps of: transmitting request information for communication between terminals to a base station; receiving, from the base station, control information necessary for setting a link for communication between the terminals after transmitting the request information; setting a direct link between the terminals for data flow between the first and second terminals using the control information; and the first and second terminals performing communication for data transmission using the direct link between the terminals when the control information is not transmitted from the base station.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: July 21, 2015
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Ji Woong Jang, Hyun Woo Lee, Han Gyu Cho
  • Patent number: 9088954
    Abstract: The present invention relates to a wireless communication system. In particular, for the transmission of a locating zone configured across one or more superframes for transmitting a locating synchronizing signal for determining the location of a terminal in a wireless communication system, the wireless communication system of the present invention transmits, to a terminal, a superframe header including information indicating whether or not to transmit the locating zone. Thus, the terminal can discern a terminal belonging to the location zone form among superframes received by the terminal.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: July 21, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Soo Choi, Han Gyu Cho, Jin Sam Kwak, Seung Hee Han