Adjusting For Phase Or Jitter Patents (Class 370/516)
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Patent number: 10193779Abstract: An operation method of a server in a communication system, an operation method of an electronic device, the server, and the electronic device are provided. The operation method of the server includes determining a variation type of a buffering delay based on a packet transmission delay of a terminal, determining control information for controlling an uplink transmission rate of the terminal according to the variation type, and transmitting the control information.Type: GrantFiled: April 25, 2016Date of Patent: January 29, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Seongryong Kang, Jonghyune Kim, Dongjin Lee, Jungah Choi
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Patent number: 10192610Abstract: A memory controller receives data and phase-providing signals from a memory device. The phase-providing signal is not a clock signal, but is used by the memory controller to phase align a local data-sampling signal with the incoming data. The memory controller samples the data signal with the data-sampling signal. The memory controller can perform maintenance operations to update the phase relationship between the phase-providing and data-sampling signals.Type: GrantFiled: August 3, 2017Date of Patent: January 29, 2019Assignee: Rambus Inc.Inventors: Scott C. Best, Richard E. Warmke, David B. Roberts, Frank Lambrecht
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Patent number: 10177899Abstract: A receiver receives a first data stream and a second data stream from a transmitting device over a packet-based communication network, the first data stream being of a first media type (e.g. audio) and the second data stream being of a second media type (e.g. video). The first jitter buffer will buffer each of a plurality of portions of the first data stream as they are received via the receiver, and apply a de-jittering delay before outputting each portion of the first data stream (e.g. audio stream) to be played out through the receiving device. The jitter buffer controller receives information on the second data stream (e.g. video stream), and adapts the de-jittering delay of the first jitter buffer (e.g. audio jitter buffer) in dependence on the information on the second data stream (e.g. information on the video stream).Type: GrantFiled: February 19, 2014Date of Patent: January 8, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Ermin Kozica, Wei Chen, David Yuheng Zhao, Christopher Asgaard Rödbro, Jesus de Vicente Peña
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Patent number: 10129161Abstract: A method for handling network jitter is provided. The method includes: receiving a plurality of data packets and recording a receiving time of each data packet; calculating time intervals between all adjacent data packets according to the receiving time of each data packet; identifying a probability distribution of the time intervals according to a plurality of preset intervals; calculating a target size of a buffer according to the probability distribution and an allowable jitter probability; and adjusting the buffer according to the target size of the buffer.Type: GrantFiled: December 20, 2016Date of Patent: November 13, 2018Assignee: Xiaomi Inc.Inventors: Jing Li, Linzhang Wang, Shangui Liang, Zijing Wu
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Patent number: 10103999Abstract: Some implementations involve controlling a jitter buffer size during a teleconference according to a jitter buffer size estimation algorithm based, at least in part, on a cumulative distribution function (CDF). The CDF may be based, at least in part, on a network jitter parameter. The CDF may be initialized according to a parametric model. At least one parameter of the parametric model may be based, at least in part, on legacy network jitter information.Type: GrantFiled: April 8, 2015Date of Patent: October 16, 2018Assignee: Dolby Laboratories Licensing CorporationInventors: JiaQuan Huo, Xuejing Sun, Kai Li
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Patent number: 10103792Abstract: For example, a wireless station may be configured to generate a plurality of time-domain streams in a time domain, the plurality of time-domain streams comprising at least a first time-domain stream comprising a first data sequence in a first interval and a second time-domain stream comprising a second data sequence in the first interval, the first time-domain stream comprises a time-inverted and sign-inverted complex conjugate of the second data sequence in a second interval subsequent to the first interval, and the second time-domain stream comprises a time-inverted complex conjugate of the first data sequence in the second interval; to convert the plurality of time-domain streams into a respective plurality of frequency-domain streams in a frequency domain; and to transmit a Multiple-Input-Multiple-Output (MIMO) transmission based on the plurality of frequency-domain streams.Type: GrantFiled: March 30, 2016Date of Patent: October 16, 2018Assignee: INTEL CORPORATIONInventors: Artyom Lomayev, Alexander Maltsev, Carlos Cordeiro, Michael Genossar
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Patent number: 10104206Abstract: A network module for sending and/or receiving of data packages from a network arrangement located in a network with ring structure, wherein the data package includes at least one data package segment, a source address, a destination address and an identification number. The network module includes a first network interface and a second network interface, for receiving and/or sending of data packages via the ring structure, a processor configured to determine, based on the destination address, if data packages received are directed to the network module and to determine if the source address and/or the destination address are contained in a predefined list of the network participants, to determine, based on the source address and the identification number, if a copy of a data package directed to the network module is already created in a memory, to create a copy of the data package in the memory.Type: GrantFiled: August 24, 2016Date of Patent: October 16, 2018Assignee: Airbus Defence and Space GmbHInventors: Ulrich Schneider, Jürgen Meilinger
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Patent number: 10050765Abstract: Systems and methods for providing an efficient and configurable port interface in an avionics data transfer system are provided. For instance, in one embodiment a set of virtual ports associated with an avionics data transfer system can be defined. At least as a subset of the virtual ports can be mapped to one or more addresses in a memory space associated with the data transfer system, such that each virtual port has a fixed definition in the memory space. One or more of the virtual ports can then be associated with one or more physical ports associated with an interface between a host computing device and an end system in the data transfer system by specifying for the one or more virtual ports a plurality of port parameters that define the respective one or more physical ports.Type: GrantFiled: January 8, 2016Date of Patent: August 14, 2018Assignee: GE Aviation Systems LLCInventors: Jonathan Paul Van Stensel, Colin Holmwood, Harry Molling
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Patent number: 10028259Abstract: There is provided a communication control device including a radio communication unit which communicates with one or more terminal devices in a cell over a channel in which a link direction is allowed to be dynamically set for each sub-frame which is a unit of time in radio communication, and a control unit which controls allocation of communication resources to the terminal device based on the setting of the link direction of the channel and a location of the terminal device in the cell.Type: GrantFiled: October 11, 2017Date of Patent: July 17, 2018Assignee: Sony CorporationInventors: Hiroaki Takano, Nishiki Mizusawa
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Patent number: 9998386Abstract: A more robust and efficient flow of voice or other content packets can be achieved by leveraging an adaptive dejitter buffer. The dejitter buffer can be dynamically adjusted according to network conditions including handover. The dejitter buffer memory/depth can be adjusted in accordance with a delay interruption length associated with various handover types. Thereafter, the dejitter buffer memory can be filled with packet data to decrease a packet delay variation associated with handover.Type: GrantFiled: May 21, 2015Date of Patent: June 12, 2018Assignee: AT&T Mobility II LLCInventors: Arthur Richard Brisebois, Sanjay Gupta
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Patent number: 9997167Abstract: A jitter buffer control for controlling a provision of a decoded audio content on the basis of an input audio content is configured to select a frame-based time scaling or a sample-based time scaling in a signal-adaptive manner. An audio decoder uses such a jitter buffer control.Type: GrantFiled: December 18, 2015Date of Patent: June 12, 2018Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Reuschl, Stefan Doehla, Jeremie Lecomte, Manuel Jander
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Patent number: 9989989Abstract: A system and method for measuring time delays in a non-periodic system can include receiving a first host signal including transitions deviating from a true periodic signal, removing deviations from the true periodic signal to form a second host signal, detecting a phase of the first host signal and the second host signal relative to a common stable clock signal, and comparing the detected phase of the first host signal and the second host signal to produce a signal indicative of the deviation of the first host signal from the true periodic signal.Type: GrantFiled: April 28, 2017Date of Patent: June 5, 2018Assignee: Raytheon CompanyInventor: Andrew Kowalevicz
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Patent number: 9992118Abstract: A system and method for efficient transfer of data over a network. A data source and a destination are coupled to one another via a network. The data source is configured to transmit data to the destination and determine a network latency associated with the transmission. In response to determining a first transmission parameter may not be optimized, the source is configured to modify the first transmission parameter and evaluate its effect on data throughput. The source may repeat such modifications as long as throughput is increased. Once the first transmission parameter is deemed optimized, the source may perform a similar procedure for a second transmission parameter. In various embodiments, the first transmission parameter may correspond to a packet size and the second transmission parameter may correspond to a number of streams being processed by the source.Type: GrantFiled: October 27, 2014Date of Patent: June 5, 2018Assignee: Veritas Technologies LLCInventors: Yingsong Jia, Hongxing Guan, Xinbao Jin
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Patent number: 9992740Abstract: There is provided a communication device including (1) a communication controller that causes a control frame for synchronization to be transmitted during a control frame transmission period to a transmission destination of a data frame such that the data frame is transmitted after transmission of the control frame has completed, (2) a transmission section that continuously transmits the control frame for the control frame transmission period, (3) a reception section that receives a frame transmitted by a communication device of the transmission destination, (4) a control frame transmission information saving section that saves information for respective destination addresses, (5) a control frame transmission controller that references the information saved in the control frame transmission information saving section, and determines the control frame transmission period for when to transmit the next control frame, based on the control frame transmission period from the past and the data frame transition resulType: GrantFiled: January 14, 2016Date of Patent: June 5, 2018Assignee: Oki Electric Industry Co., Ltd.Inventor: Toshihiko Matsunaga
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Patent number: 9935832Abstract: Mechanisms for designating particular nodes in a network as measurement endpoint (MEP) nodes are disclosed. Network topology information that identifies a plurality of nodes and communication links in a network is accessed. An initial chromosome generation is established. Each chromosome in the chromosome generation comprises a structure that identifies each node in the plurality of nodes that has an MEP capability and that includes an MEP state indicator for each node. A succession of a plurality of chromosome generations are generated by evolving each chromosome generation into a successive chromosome generation based on a genetic selection function and a fitness function until a threshold condition is met. An optimal chromosome from a successive chromosome generation is determined. A configuration command is sent to each node in a subset of the nodes that configures each node to operate as a MEP node.Type: GrantFiled: June 19, 2014Date of Patent: April 3, 2018Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Andreas Johnsson, Catalin Meirosu
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Patent number: 9930627Abstract: A method for executing a network command using synchronized timers. The method includes obtaining, by a first device, a first current time value from a first timer of the first device, determining, by the first device, a time-to-execute value based on the first current time value, sending, from the first device to a second device, a first network command message including the network command and the time-to-execute value, repetitively obtaining, by the second device, a second current time value from a second timer of the second device, comparing, by the second device and in response to receiving the first network command message, the second current time value to the time-to-execute value extracted from the first network command message, and executing, by the second device and in response to the second current time value matching the time-to-execute value, the network command, wherein the first timer and the second timer are synchronized.Type: GrantFiled: June 29, 2015Date of Patent: March 27, 2018Assignee: Ciena CorporationInventors: Gerard Leo Swinkels, Steve Clarke, Sharon Margaret Chisholm
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Patent number: 9847800Abstract: A transmitter includes estimation circuitry and correction circuitry. The estimation circuitry is configured to estimate, based at least on a phase error between a local oscillator and a reference frequency, values for parameters that describe a frequency deviation experienced by a phase locked loop (PLL) during transmission of the data sample, wherein the PLL includes a local oscillator. The correction circuitry is configured to generate a correction term based at least on the estimated parameters; adjust the data sample with the correction term to generate a compensated data sample; and provide the compensated data sample for modulation of a carrier wave generated by the local oscillator.Type: GrantFiled: May 25, 2016Date of Patent: December 19, 2017Assignee: Intel IP CorporationInventors: Giuseppe Li Puma, Victor Da Fonte Dias
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Patent number: 9825745Abstract: Methods, systems, and devices are described for supporting common reference signaling in wireless communications systems. Some configurations introduce a phase discontinuity between common reference signal (CRS) transmissions on different subframes. This may address issues that may arise when a reduced CRS periodicity is utilized. Indicators may also be transmitted from base stations to user equipment (UEs) to indicate whether phase continuity may be assumed or not. Some configurations may support CRS sequence initialization. These tools and techniques may utilize an extended CRS sequence periodicity, which may increase the number of CRS sequences transmitted by a cell.Type: GrantFiled: May 20, 2016Date of Patent: November 21, 2017Assignee: QUALCOMM IncorporatedInventors: Aleksandar Damnjanovic, Wanshi Chen, Peter Gaal, Durga Prasad Malladi, Tao Luo, Yongbin Wei, Hao Xu
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Patent number: 9824717Abstract: The respective occupancies of a set of audio buffers are controlled via a common target occupancy value common to all the buffers in the set. This common target may take non-integral values. For each buffer, the difference is taken between the occupancy value of the buffer and the common target occupancy value. A sample is dropped or repeated as the difference exceeds half a sample. A recursive sum is formed of the fractional parts of the difference measures from the set of buffers and the recursive sum is used to adjust the common target occupancy value, within a selected range of values.Type: GrantFiled: October 23, 2014Date of Patent: November 21, 2017Assignee: Snell Advanced Media LimitedInventor: Jeff Butters
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Patent number: 9806976Abstract: A method is provided for performing a time measurement on a packet flow to be transmitted from a first node to a second node of a communication network. The method includes calculating a medium transmission time parameter indicative of an average of transmission time parameters relating to packets transmitted during a given block period; calculating a medium reception time parameter indicative of an average of reception time parameters relating to the same packets; and calculating a medium time measurement indicative of an average performance of the packet flow during the block period using the medium transmission time parameter and the medium reception time parameter.Type: GrantFiled: May 22, 2012Date of Patent: October 31, 2017Assignee: Telecom Italia S.p.A.Inventor: Mauro Cociglio
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Patent number: 9807738Abstract: There is provided a communication control device including a radio communication unit which communicates with one or more terminal devices in a cell over a channel in which a link direction is allowed to be dynamically set for each sub-frame which is a unit of time in radio communication, and a control unit which controls allocation of communication resources to the terminal device based on the setting of the link direction of the channel and a location of the terminal device in the cell.Type: GrantFiled: September 20, 2016Date of Patent: October 31, 2017Assignee: Sony CorporationInventors: Hiroaki Takano, Nishiki Mizusawa
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Patent number: 9767106Abstract: In an embodiment, a method can include loading a first snapshot of data stored on a storage device, the first snapshot being verified. The method can further include capturing a second snapshot of data stored on the store device after waiting an interval of time from creation of the first snapshot. The method can further include generating a list of closed files between the two snapshots by differentiating the first snapshot and the second snapshot. The method can additionally include verifying the second snapshot by comparing the closed files in the list of closed files by in the second snapshot to the closed files in the storage device, which is an active snapshot. The method can also include deleting the first snapshot.Type: GrantFiled: June 30, 2014Date of Patent: September 19, 2017Assignee: EMC IP Holding Company LLCInventors: Abhinav Duggal, Dheer Moghe
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Patent number: 9769843Abstract: A method and system for providing control information for supporting high speed downlink and high speed uplink packet access are disclosed. A Node-B assigns at least one downlink control channel and at least one uplink control channel to a wireless transmit/receive unit (WTRU). The downlink control channel and the uplink control channel are provided to carry control information for both the downlink and the uplink. Conventional control channels, for downlink and uplink are combined into a reduced set of control channels for uplink and downlink. The Node-B and the WTRU communicate control information via the downlink control channel and the uplink control channel. The WTRU receives downlink data and transmits uplink data, and the Node-B receives uplink data and transmits downlink data based on the control information transmitted via the downlink control channel and the uplink control channel.Type: GrantFiled: May 26, 2015Date of Patent: September 19, 2017Assignee: InterDigital Technology CorporationInventors: Arty Chandra, Stephen E. Terry
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Patent number: 9749212Abstract: A multi-mainframe system problem determination method includes receiving, in a first computing system, a data collection trigger, coordinating, in the first computing system, synchronized diagnostic data collection with a second computing system, and delivering the diagnostic data to a storage medium.Type: GrantFiled: September 30, 2014Date of Patent: August 29, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David D. Chambliss, Joshua W. Knight, Ronald K. Kreuzenstein, John J. Lee, James A. Ruddy, John G. Thompson, Harry M. Yudenfriend
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Patent number: 9713125Abstract: A method and apparatus for fast control channel feedback for multiple downlink carrier operations are disclosed. A wireless transmit/receive unit (WTRU) receives signals over a plurality of downlink carriers, generates feedback for each of the plurality of downlink carriers based on the received signals, and transmits via a plurality of antennas, the feedback for at least one of the plurality of downlink carriers over a first physical channel and feedback for another of the plurality of downlink carriers over a second physical channel.Type: GrantFiled: April 22, 2013Date of Patent: July 18, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Diana Pani, Benoit Pelletier, Lujing Cai, Paul Marnier, Christopher R. Cave, Rocco DiGirolamo
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Patent number: 9705663Abstract: Disclosed are a communication system and a synchronization method for enabling synchronization of units included in the communication system in case of a communication line failure. In the communication system according to the present invention, all units are synchronized with the period of an ADSYNC outputted from a master unit when the ADSYNC, in which a data transmission preparation period and a data transmission period make a single cycle, is outputted from the master unit; slave units output a free-run ADSYNC when an ADSYNC is not outputted from the master unit; and, when a plurality of the slave units output free-run ADSYNCs, the slave units are synchronized with any one free-run ADSYNC from among the outputted free-run ADSYNCs.Type: GrantFiled: October 16, 2014Date of Patent: July 11, 2017Assignee: LG CHEM, LTD.Inventors: Ju-Hyun Kang, Yasuhito Eguchi, Shoji Tanina
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Patent number: 9703316Abstract: An information processing apparatus that is capable of correcting a time-of-day management function in the information processing apparatus even in an environment where the time of day cannot be properly measured in the information processing apparatus in a power-saving mode. A first time of day is obtained from an external apparatus on a network. A second time of day is identified based on the number of input CPU clocks per prescribed time period. The number of input CPU clocks per prescribed time period is corrected based on the first time of day and the second time of day.Type: GrantFiled: November 12, 2014Date of Patent: July 11, 2017Assignee: CANON KABUSHIKI KAISHAInventor: Tomohiro Kimura
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Patent number: 9699083Abstract: A frame search processing apparatus includes a frame information extraction unit (1) that extracts frame information from an input frame, a search processing unit (2) that compares the frame information with entry information, and a frame information output control unit (3) that controls output of the frame information to the search processing unit (2). The search processing unit (2) includes a plurality of comparison units that read out N pieces of entry information from a search table, and perform comparison between the entry information and the frame information at once.Type: GrantFiled: February 12, 2013Date of Patent: July 4, 2017Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yuki Arikawa, Kenji Kawai, Yukikuni Nishida, Masami Urano, Keiichi Koike
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Patent number: 9680507Abstract: A method includes determining, at a decoder of a first device, an offset value corresponding to an offset between a first particular packet and a second particular packet. The first device includes a de-jitter buffer. The method also includes transmitting the offset value to an encoder of a second device to enable the second device to send packets to the first device based on the offset value.Type: GrantFiled: June 24, 2015Date of Patent: June 13, 2017Assignee: QUALCOMM IncorporatedInventors: Subasingha Shaminda Subasingha, Venkatesh Krishnan, Vivek Rajendran, Venkatraman S. Atti, Chandra Mouli Polisetty
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Patent number: 9613665Abstract: A method for performing memory interface control of an electronic device and an associated apparatus are provided, where the method includes the steps of: when it is detected that a phase difference between a data signal and a clock signal reaches a predetermined value, controlling the clock signal to switch from a first frequency to a second frequency, wherein both of the clock signal and the data signal are signals of a memory interface circuit of the electronic device, and the memory interface circuit is arranged for controlling a random access memory (RAM) of the electronic device; applying at least one phase shift to the data signal until a condition is satisfied; and controlling the clock signal to switch from the second frequency to the first frequency; wherein the memory interface circuit is calibrated with aid of the at least one phase shift.Type: GrantFiled: November 6, 2014Date of Patent: April 4, 2017Assignee: MEDIATEK INC.Inventors: Shang-Pin Chen, Bo-Wei Hsieh
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Patent number: 9602366Abstract: A system and method for correcting clock discrepancy in simultaneous network traffic data captures in a multi-tiered, multi-session environment. The invention uses intrinsic constraints imposed by the nature of the traffic onto the possible temporal sequence of the packets, The invention uses the intrinsic restraints of the network architecture and the protocols used at each segment along with the time stamps in the various segments to determine both an offset and scale correction to the clock readings (timestamps) in the traces in order to obtain a correct temporal sequence of packets when using multiple capture agents/engines/network monitors.Type: GrantFiled: March 3, 2010Date of Patent: March 21, 2017Assignee: NetScout Systems, Inc.Inventor: Dmitrii Yurievich Manin
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Patent number: 9584305Abstract: A source-synchronization interface circuit includes: a sender synchronous-to-asynchronous protocol converter that receives sender data and a sender clock and that has regenerative gain to resolve metastability during phase synchronization of the sender clock and a receiver clock; an asynchronous FIFO buffer with multiple stages that conveys phase information and data from the sender synchronous-to-asynchronous protocol converter to a receiver synchronous-to-asynchronous protocol converter; and a receiver synchronous-to-asynchronous protocol converter that receives the receiver clock and that has regenerative gain to resolve metastability during the phase synchronization.Type: GrantFiled: December 10, 2015Date of Patent: February 28, 2017Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Suwen Yang, Mark R. Greenstreet, Tarik Ono
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Patent number: 9544215Abstract: A method and an apparatus for evaluating performance of a wireless network capillary channel are described, and relate to the field of mobile communications. The method may include: it is determined whether a network packet includes a payload or not, after obtaining the network packet on the wireless network capillary channel; when determining that the network packet includes the payload, retransmission rate and packet loss rate statistic processing, disorder rate statistic processing, and packet capture process packet loss rate statistic processing are performed; and when determining that the network packet does not include the payload, the packet capture process packet loss rate statistic processing is directly performed. The disclosure can evaluate channel performance better in a finer layer.Type: GrantFiled: September 9, 2013Date of Patent: January 10, 2017Assignee: ZTE CorporationInventor: Jianhua Yin
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Patent number: 9528412Abstract: An exhaust gas purification catalyst is recovered from the sulfur poisoning more appropriately.Type: GrantFiled: June 19, 2012Date of Patent: December 27, 2016Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Sakurai, Yuji Miyoshi, Toru Kidokoro
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Patent number: 9526037Abstract: A method for providing indication of an SRVCC handover is disclosed. The method can include a first wireless communication device participating in a voice call with a second wireless communication device via a connection between the first wireless communication device and a first network. The method can further include the first wireless communication device determining a condition indicative of an impending SRVCC handover of the first wireless communication device from the first network to a legacy network. In response to the condition, the method can additionally include the first wireless communication device formatting a message including an indication that the first wireless communication device is going to perform the SRVCC handover and sending the message to the second wireless communication device prior to performance of the SRVCC handover.Type: GrantFiled: January 30, 2014Date of Patent: December 20, 2016Assignee: Apple Inc.Inventors: Samy Khay-Ibbat, Sarma V. Vangala, Sreevalsan Vallath, Navid Damji, Luciano Miguel Verger, Srinivasan Vasudevan, Shivesh Makharia, Sree Ram Kodali, Madhusudan Chaudhary, Jianxiong Shi
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Data reception apparatus and method of determining identical-value bit length in received bit string
Patent number: 9509491Abstract: A data reception apparatus calculates an integrated number of bits by integrating the number of bits in a received bit string; calculates an integrated number of samples by integrating the number of samples obtained by oversampling each bit; obtains a fitting line indicating correspondence between the integrated number of bits and the integrated number of samples based on a plurality of points of which each point corresponds to either only a rise edge or only a fall edge of each bit in the received bit string; and determines a bit length in the received bit string based on the fitting line.Type: GrantFiled: July 8, 2014Date of Patent: November 29, 2016Assignee: DENSO CORPORATIONInventors: Keita Hayakawa, Hironobu Akita, Hirofumi Yamamoto -
Patent number: 9497493Abstract: A video communication system having: an encoder coding input video data and outputting a video stream; and a packet processing part grouping into packets the output video stream from said encoder and outputting the same to a communication path; wherein said packet processing part generates an original data cluster consolidating a packet for each group of a prescribed number of MB processes and redundant data for correcting data errors of said original data cluster; and controls the insertion quantity of redundant data so that the combined number of bits of said original data cluster and said redundant data works out to be equal to or less than the target number of bits.Type: GrantFiled: November 29, 2010Date of Patent: November 15, 2016Assignee: Hitachi Maxell, Ltd.Inventors: Mitsuhiro Okada, Hironori Komi, Taku Nakamura, Tomoyuki Myojin, Hiroki Mizosoe, Yusuke Yatabe
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Patent number: 9490977Abstract: A method and apparatus for generating physical layer security keys is provided. Channel impulse response (CIR) measurements are recorded. Each CIR measurement is associated with a time-stamp. Where possible, the time-stamps are paired with time-stamps that are associated with another plurality of CIR measurements. The CIR data associated with the paired time-stamps is aggregated. Each of the aggregated CIR measurements is aligned, and at least one CIR measurement is selected for use in secret key generation.Type: GrantFiled: November 6, 2008Date of Patent: November 8, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Chunxuan Ye, Alexander Reznik, Yogendra C. Shah, Julien Closs, Frederic H. Truco
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Patent number: 9479573Abstract: The present disclosure is related to transmitting and receiving media channels, such as audio and video channels. These channels may be transmitted as packets from one or more transmitting devices to one or more receiving devices for playout. Certain embodiments of the present disclosure include systems, methods, and computer-readable media for determining latency of a data network for synchronized playout of received signals. Additionally, certain embodiments of the present disclosure include a systems, methods, and computer-readable media for synchronizing playout among devices connected to a data network.Type: GrantFiled: January 21, 2015Date of Patent: October 25, 2016Assignee: Audinate Pty LimitedInventors: Andrew White, Aidan Williams
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Patent number: 9480053Abstract: There is provided a communication control device including a radio communication unit which communicates with one or more terminal devices in a cell over a channel in which a link direction is allowed to be dynamically set for each sub-frame which is a unit of time in radio communication, and a control unit which controls allocation of communication resources to the terminal device based on the setting of the link direction of the channel and a location of the terminal device in the cell.Type: GrantFiled: March 13, 2013Date of Patent: October 25, 2016Assignee: Sony CorporationInventors: Hiroaki Takano, Nishiki Mizusawa
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Patent number: 9462270Abstract: Systems, apparatus and methods can operate to generate frame aligned digital video streams encoded at different bitrates from a common digital video stream. To provide uninterrupted playback of video content when a device switches from one stream encoded at one bit rate to the same digital video stream encoded at another bitrate, the video frames of the digital video streams can be aligned. To provide for proper frame alignment between fragments representing the same frame of a digital video stream encoded at different bitrates, video encoding device(s) can mark decoded digital pictures for subsequent encoding at different bit rates when the division of a program reference clock value by the fragment period approaches an integer value.Type: GrantFiled: December 10, 2012Date of Patent: October 4, 2016Assignee: ARRIS Enterprises, Inc.Inventors: John Lan, Santhana Chari
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Patent number: 9432312Abstract: In one embodiment, a message is received at a node in a network indicating that the node is classified as a critical node, and requesting the node to proactively time-stamp data packets. Data packets are received from one or more child nodes of the node, and the node selects a data packet of the received data packets to time-stamp. Then, the node proactively inserts a time-stamp in the selected data packet. The time-stamped data packet is sent toward a central management node.Type: GrantFiled: July 3, 2013Date of Patent: August 30, 2016Assignee: Cisco Technology, Inc.Inventors: Sukrit Dasgupta, Jean-Philippe Vasseur, Grégory Mermoud
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Patent number: 9420475Abstract: A radio communication device may be provided. The radio communication device may include: a receiver configured to receive data; a buffer configured to buffer a variable amount of the data; a reception condition determiner configured to determine a reception condition indicating a condition under which the receiver receives the data; and a buffer amount setter configured to set the amount of the data based on the determined reception condition.Type: GrantFiled: February 8, 2013Date of Patent: August 16, 2016Assignee: INTEL DEUTSCHLAND GMBHInventors: Jerome Parron, Peter Kroon
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Patent number: 9398091Abstract: A networked system is provided for transporting digital media packets, such as audio and video. The network includes network devices interconnected to send and receive packets. Each network device can receive and transmit media signals from media devices. A master clock generates a system time signal that the network devices use, together with a network time protocol to generate a local clock signal synchronized to the system time signal for both rate and offset. The local clock signal governs both the rate and offset of the received or transmitted media signals. The system, which can be implemented using conventional network equipment enables media signals to be transported to meet quality and timing requirements for high quality audio and video reproduction.Type: GrantFiled: March 3, 2015Date of Patent: July 19, 2016Assignee: Audinate Pty LimitedInventors: Aidan Williams, Varuni Witana
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Patent number: 9369135Abstract: Systems and methods for generating gapped signals comprising a Delta Sigma Modulator (DSM) configured to generate gapping control signals used to control gap removal rates of an associated gapping unit. The DSM is configured to generate a gapping control signal based on a value of an overflow resulted from performing adding a first number with a remainder of a stored value modulo a second number. The gap removal rates as well as the gap removal resolutions can be adjusted by selecting appropriate values of the first number, the stored value, and the second number. The gapping resolution can be a portion of a pulse. The first number and the second number may be derived from an intended frequency ratio between a gapped signal and a corresponding input signal. The gapping unit may comprise a gapping circuit or a multi-modulus divider.Type: GrantFiled: March 18, 2013Date of Patent: June 14, 2016Assignee: Applied Micro Circuits CorporationInventors: Yehuda Azenkot, Michael Grosner, Timothy P. Walker
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Patent number: 9363187Abstract: A jitter buffering system and a method of jitter buffering. The jitter buffering system may be embodied in a quality of service (QoS) management server, including: (1) a network interface controller (NIC) configured to receive one-way-delay statistics regarding a video stream transmitted to a client, and (2) a processer configured to employ the one-way-delay statistics to calculate and recognize jitter and subsequently generate a command for the client to enable jitter buffering.Type: GrantFiled: March 18, 2013Date of Patent: June 7, 2016Assignee: Nvidia CorporationInventor: Atul Apte
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Patent number: 9338208Abstract: A system for event-based synchronized multimedia playback, comprising a media source device and a plurality of destination devices, each destination device comprising a local clock, and a synchronization module on one of the devices. The synchronization module transmits common events, En, each with a unique event number, to each of the plurality of destination devices. Each destination device records time Dxn when event En is received and transmits an acknowledgement message back to the synchronization module comprising time Dxn and event number n. The synchronization module determines phase and frequency differences between clocks of respective destination devices; computes a frequency adjustment to compensate for phase and rate differences; and directs each respective destination device to adjust its clock phase and frequency accordingly. Each destination device adjusts its local clock as directed or may perform a sample rate conversion on sample data in order to enable synchronized media playback.Type: GrantFiled: October 2, 2014Date of Patent: May 10, 2016Assignee: Blackfire Research CorporationInventor: Ravi U Rajapakse
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Patent number: 9323794Abstract: Disclosed herein is a method and system for accelerating the generation of pattern indexes. In exemplary embodiments, regular expression pattern matching can be performed at high speeds on data to determine whether a pattern is present in the data. Pattern indexes can then be built based on the results of such regular expression pattern matching. Reconfigurable logic such a field programmable gate arrays (FPGAs) can be used to hardware accelerate these operations.Type: GrantFiled: November 27, 2012Date of Patent: April 26, 2016Assignee: IP Reservoir, LLCInventors: Ronald S. Indeck, Naveen Singla, David E. Taylor
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Patent number: 9292468Abstract: In an embodiment, a processor includes a core to execute instructions and a logic to receive memory access requests from the core and to route the memory access requests to a local memory and to route snoop requests corresponding to the memory access requests to a remote processor. The logic is configured to maintain latency information regarding a difference between receipt of responses to the snoop requests from the remote processor and receipt of responses to the memory access requests from the local memory. Other embodiments are described and claimed.Type: GrantFiled: December 17, 2012Date of Patent: March 22, 2016Assignee: Intel CorporationInventors: Ankush Varma, Krishnakanth V. Sistla
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Patent number: 9282174Abstract: A system and method for detecting a transient outage of an Internet Protocol (IP) network. A probe sending device sends probe packets over the IP network. A probe packet includes a probe sequence number and a timestamp value issued by the probe sending device. A probe receiving device receives a current probe packet. The probe receiving device overwrites probe packet data obtained from a last received probe packet with the current probe packet when the current probe sequence number exceeds the sequence number of the last received probe packet by one. The probe receiving device stores the current probe packet data obtained from the current probe packet when the current probe sequence number exceeds the sequence number of the last received probe packet by more than one.Type: GrantFiled: February 20, 2013Date of Patent: March 8, 2016Assignee: TIME WARNER CABLE ENTERPRISES LLCInventors: Kamil Ince, Jeff Aitken, Wes George