Patents Issued in September 30, 2014
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Patent number: 8848712Abstract: A network device includes a multi-chassis system in which each chassis includes a RSVP-TE protocol stack that may provide RSVP-TE services for LSP tunnels associated with each chassis. The multi-chassis system may include an administrative chassis. The administrative chassis may forward RSVP messages to other chassis of the network device. The administrative chassis may encapsulate the RSVP messages with a chassis address. The other chassis may de-encapsulate the RSVP messages and process the RSVP messages according to the RSVP-TE protocol. The administrative chassis may obtain session information associated with other chassis based on RSVP messages received. The administrative chassis may manage adjacency mechanisms and failure and recovery mechanisms. The multi-chassis system including the distributed RSVP-TE protocol stacks may minimize scalability issues and improve performance when high-capacity routing and/or switching services are needed.Type: GrantFiled: August 10, 2009Date of Patent: September 30, 2014Assignee: Infinera CorporationInventors: Ashok Kunjidhapatham, Rajan Rao, Biao Lu, Mohit Misra, Sri Mohana Satya Srinivas Singamsetty
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Patent number: 8848713Abstract: Systems, devices and methods for improving network performance are disclosed. In particular, in one embodiment, a method of processing data packets in an electronic network is provided. The method includes receiving data packets at a receive stack of an electronic network device and creating a first packet from at least a portion of each of the set of data packets. The first packet includes an indicator that the first packet is a first packet type. Additionally, the method includes passing the first packet to one of a bridge and IP layer of the receive stack. A first packet inhibitor at the one of the bridge and IP layer is bypassed upon recognizing the first packet as a first packet type. The first packet is routed to a transmit stack of the electronic network device from the one of the bridge and IP layer.Type: GrantFiled: October 13, 2009Date of Patent: September 30, 2014Assignee: Apple Inc.Inventor: Francesco DiMambro
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Patent number: 8848714Abstract: An edge router measures a traffic volume inputted into a network, and the measurement result is notified to a network management server. If the network management server judges that the notified traffic volume is “smaller” than a capacity of a second core router, it will direct a first core router to shift to a power saving mode. The first core router notifies the edge router of the shift to the power saving mode, and the edge router updates a routing table so that the packet to the first core router may be bypassed to the second core router. The first core router shifts to the power saving mode that does not perform packet transfer, and reduction in electric power is realized.Type: GrantFiled: December 17, 2009Date of Patent: September 30, 2014Assignee: Alaxala Networks CorporationInventors: Takeki Yazaki, Tomoyuki Oku, Mitsuru Nagasaka
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Patent number: 8848715Abstract: A forwarding system comprises a identification engine, a hardware forwarding engine configured to process an ingressing packet, a software forwarding engine configured to process the ingressing packet, and a selection engine. The selection engine is configured to select one of the hardware forwarding engine or the software forwarding engine to process the ingressing packet. The selection is based on at least one of an indication of resource availability or a classification of the ingressing packet based on a priority of a flow as determined by the identification engine. In some embodiments, the selection engine selects different forwarding engines to process different packets of a same flow based on changes in resource availability or classification of the ingressing packet.Type: GrantFiled: March 1, 2011Date of Patent: September 30, 2014Assignee: Marvell Israel (M.I.S.L) Ltd.Inventors: Erez Izenberg, Alon Pais, Ruven Torok, Dimitry Melts, Yuval Caduri, Dmitri Epshtein
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Patent number: 8848716Abstract: In one embodiment, line cards of packet switching or other network devices are configured for terminating pseudowires. Typically, this includes multiple line cards being configured for terminating a same pseudowire, which allows the corresponding pseudowire traffic to be received by any one of these multiple line cards. Each of these pseudowire-terminating line cards is typically configured to apply one or more features to a pseudowire packet. Examples of these features include, but are not limited to: Access Control List, Quality of Service, Netflow, and Lawful Intercept. For a received packet to be sent out one of these pseudowires, a two-stage lookup operation can be used to first identify the pseudowire over which to forward the packet; and a second lookup operation based on the pseudowire to identify forwarding information corresponding to a path through a network over which a corresponding pseudowire is configured.Type: GrantFiled: April 11, 2011Date of Patent: September 30, 2014Assignee: Cisco Technology, Inc.Inventors: Vijayan Ramakrishnan, Sami Boutros, Leo Chun-Chuen Chan, Reshad Rahman, Sundar Siddaramaiah Bettadahalli, Sivakumar Subramaniyan Ganapathy
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Patent number: 8848717Abstract: The present invention relates to network communications technologies, and discloses a method, an apparatus, and a network system for multi-port load sharing. The method includes: receiving packets destined for a destination; searching an address port mapping table for corresponding logical egress port information according to destination address information carried in the packets; searching a logical port table for information about a corresponding load sharing group according to the logical egress port information, where the load sharing group includes at least two physical ports and each physical port corresponds to at least two subchannels; and encapsulating the packets into at least one subchannel corresponding to each physical port in the load sharing group respectively according to a preset load sharing policy, and forwarding the packets to the destination through the corresponding physical port. The embodiments of the present invention are applicable to network communications.Type: GrantFiled: August 12, 2011Date of Patent: September 30, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Qinghua Yan, Lu Bai
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Patent number: 8848718Abstract: Methods and systems are provided for applying metering and rate-limiting in a virtual router environment and supporting a hierarchy of metering/rate-limiting contexts per packet flow. According to one embodiment, multiple first level metering options and multiple second level metering options associated with a hierarchy of metering levels are provided. A virtual routing engine receives packets associated with a first packet flow and packets associated with a second packet flow. The virtual routing engine performs a first type of metering of the first level metering options on the packets associated with the first packet flow using a first metering control block (MCB) and performs a second type of metering of the second level metering options on the packets associated with the first packet flow and the packets associated with the second packet flow using a second MCB.Type: GrantFiled: May 18, 2009Date of Patent: September 30, 2014Assignee: Google Inc.Inventors: Zahid Hussain, Sachin Desai, Naveed Alam, Joseph Cheng, Tim Millet
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Patent number: 8848719Abstract: In one or more embodiments of the disclosed technology, an Access Point (AP) schedules communication traffic flows or service tasks between an Access Point (AP) and one or more member stations in a Wireless Local Area Network (WLAN). The communication traffic flows or service tasks may include both control and management flows and data traffic flows. The communication traffic flows or service tasks may include traffic flows or streams of different types, each of which may have different service intervals. The order of service tasks can be changed from cycle to cycle, randomly, by rotation, or based on historical delay records.Type: GrantFiled: December 22, 2008Date of Patent: September 30, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Lusheng Ji, Bo Han, Robert R. Miller, II
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Patent number: 8848720Abstract: A propagation delay in the transmission of a frame from an initiator node to a peer node is determined by initially identifying a frame number and byte offset of a first incoming frame from the peer node at a time when the initiator node outputs a portion of a transmitted frame. The portion of the transmitted frame may be the first byte of a sub-frame within the transmitted frame. At the peer node, the frame number and byte offset of a second frame to be supplied to the initiator node is identified at a later time when the frame portion transmitted by the initiator node is received by the peer node, and such information is transmitted to the initiator node. Thus, since the frames output and received by the initiator node are typically of fixed duration, the frame number and byte offset of the incoming frame represent the time when the initiator node outputs the frame portion (a transmit time).Type: GrantFiled: March 25, 2010Date of Patent: September 30, 2014Assignee: Infinera CorporationInventors: Vinod Narippatta, Edward E. Sprague, Ting-Kuang Chiang, Chung Kuang Chin
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Patent number: 8848721Abstract: An approach is provided for coordinating information request messages over an ad-hoc mesh network. A module receives at least one request to transmit one or more information request messages over an ad-hoc mesh network. The module determines context information associated with at least a portion of the ad-hoc mesh network, one or more nodes within the at least a portion of the ad-hoc mesh network, or a combination thereof. The module then determines to transmit the one or more information request messages over the ad-hoc mesh network based, at least in part, on the context information.Type: GrantFiled: November 30, 2011Date of Patent: September 30, 2014Assignee: Nokia CorporationInventors: Markku Tapio Turunen, Kari Juhani Leppanen, Francis Pak Kwan Tam, Kimmo Tapani Ramo
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Patent number: 8848722Abstract: A method and apparatus (“utility”) for facilitating connection of rack-mounted data devices (50) to a data network is provided. The utility includes a distribution strip (42) and a number of network ports (44), disposed on the distribution strip (42), for use in connecting the rack-mounted data devices (50) to the network. The distribution strip (42) has a longitudinal axis, and is disposed on a rack (40) such that a length of the distribution strip (42), defined relative to the longitudinal axis, extends primarily or exclusively along a vertical axis of the rack (40). The distribution strip may further include a data network switch device. A utility is also provided that provides improved redundancy with regard to connections of rack-mounted data devices by including a distribution strip (42) that includes first and second ports (46) for connecting the distribution strip (42) to a network device (56).Type: GrantFiled: September 29, 2009Date of Patent: September 30, 2014Assignee: Zonit Structured Solutions, LLCInventors: Steve Chapel, William Pachoud
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Patent number: 8848723Abstract: Described embodiments provide for dynamically constructing a scheduling hierarchy of a network processor. A traffic manager generates a tree scheduling hierarchy having a root scheduler and N scheduler levels. The network processor generates tasks corresponding to received packets. The traffic manager queues the received task in the associated queue, the queue having a corresponding parent scheduler at each of one or more next levels of the scheduling hierarchy up to the root scheduler. A parent scheduler selects, starting at the root scheduler and iteratively repeating at each of the corresponding N scheduling levels until a queue is selected, a child node to transmit at least one task. The traffic manager forms output packets for transmission based on the at least one task from the selected queue.Type: GrantFiled: September 30, 2011Date of Patent: September 30, 2014Assignee: LSI CorporationInventors: Balakrishnan Sundararaman, Shashank Nemawarkar, David Sonnier, Shailendra Aulakh
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Patent number: 8848724Abstract: Methods and systems consistent with the present invention provide dynamic buffer allocation to a plurality of queues of differing priority levels. Each queue is allocated fixed minimum number of buffers that will not be de-allocated during buffer reassignment. The rest of the buffers are intelligently and dynamically assigned to each queue depending on their current need. The system then monitors and learns the incoming traffic pattern and resulting drops in each queue due to traffic bursts. Based on this information, the system readjusts allocation of buffers to each traffic class. If a higher priority queue does not need the buffers, it gradually relinquishes them. These buffers are then assigned to other queues based on the input traffic pattern and resultant drops. These buffers are aggressively reclaimed and reassigned to higher priority queues when needed.Type: GrantFiled: April 16, 2012Date of Patent: September 30, 2014Assignee: Juniper Networks, Inc.Inventors: Sreenivas Voruganti, Atul Mahamuni
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Patent number: 8848725Abstract: A network (60) within a residence or other building, including both wired (5) and non-wired segments (53). The wired segments are based on new or existing wires (5a, 5b, 5c, 5d, 5e) in the building, wherein access to the wires is provided by means of outlets (61a, 61d), such as a telephone system, electrical power distribution system, or cable television wiring system. The non-wired segments are based on communication using propagated waves such as radio, sound, or light (e.g. infrared). The wired and non-wired segments interface in the outlet, using a module (50) that serves as mediator between the segments. The module can be integrated into the outlet, partially housed in the outlet, or attached externally to the outlet. Such a network allows for integrated communication of data units (24b) connected by wires and data units (24a, 24d) connected without wires.Type: GrantFiled: September 14, 2012Date of Patent: September 30, 2014Assignee: Conversant Intellectual Property Management IncorporatedInventor: Yehuda Binder
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Patent number: 8848726Abstract: Systems and methods to process packets of information use an on-chip information processing system configured to receive, resolve, convert, and/or transmit packets of different packet-types in accordance with different protocols. A first packet-type may use a protocol for wired local-area-networking (LAN) technologies, such as Ethernet. A second packet-type may use a proprietary protocol. The proprietary protocol may be used to exchange information with one or more packet processing engines, such as neural processing engines.Type: GrantFiled: January 24, 2013Date of Patent: September 30, 2014Assignee: The Intellisis CorporationInventor: Douglas A. Palmer
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Patent number: 8848727Abstract: A Small Computer System Interface (SCSI) transport for fabric backplane enterprise servers provides for local and remote communication of storage system information between storage sub-system elements of an ES system and other elements of an ES system via a storage interface. The transport includes encapsulation of information for communication via a reliable transport implemented in part across a cellifying switch fabric. The transport may optionally include communication via Ethernet frames over any of a local network or the Internet. Remote Direct Memory Access (RDMA) and Direct Data Placement (DDP) protocols are used to communicate the information (commands, responses, and data) between SCSI initiator and target end-points. A Fiber Channel Module (FCM) may be operated as a SCSI target providing a storage interface to any of a Processor Memory Module (PMM), a System Control Module (SCM), and an OffLoad Module (OLM) operated as a SCSI initiator.Type: GrantFiled: December 11, 2009Date of Patent: September 30, 2014Assignee: Oracle International CorporationInventors: Nakul Pratap Saraiya, Ganesh Sundaresan, William E. Fisher
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Patent number: 8848728Abstract: A forwarding system includes a first processor coupled to connecting devices using a plurality of uplinks, and a second processor coupled to the connecting devices using a plurality of downlinks. The first processor includes, in a memory, one or more queues each corresponding to the second processor, a priority, and/or to a packet cast type (e.g., unicast or multicast). The first processor is configured to select a particular queue, select a particular uplink based on a comparison of measurements corresponding to respective loads of the plurality of uplinks, and cause a fragment or the entirety of a packet in the particular queue to be forwarded to the second processing device using the selected uplink and corresponding connecting device. The second processor is configured to reassemble the packet, reorder the packet into a flow, and forward the packet from the forwarding system.Type: GrantFiled: April 6, 2011Date of Patent: September 30, 2014Assignee: Marvell Israel (M.I.S.L) Ltd.Inventors: Yoram Revah, Aviran Kadosh
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Patent number: 8848729Abstract: The present invention discloses a method for configuring a Physical Downlink Control Channel (PDCCH), a base station and a UE, wherein the base station configures a component carrier or component carriers for monitoring the PDCCH for the UE and notifies the UE about information on the configured component carrier or component carriers so that the UE monitors the PDCCH only over the configured component carrier or component carriers. Stated otherwise, in this way, the UE will operate only over a necessary component carrier or component carriers without monitoring respective component carriers in an LTE-A system to thereby reduce the number of concurrently monitored component carriers, and in the case of nonconsecutive component carriers, also reduce the number of consequently enabled receivers and consequently the amount of consumed power of the UE for monitoring the PDCCH.Type: GrantFiled: January 14, 2010Date of Patent: September 30, 2014Assignee: China Academy of Telecommunications TechnologyInventors: Li Chen, Zhuo Gao, Guooing Li
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Patent number: 8848730Abstract: In a communication system wherein a plurality of electronic devices connect and disconnect from communication over a medium and wherein the communication system has a protocol such that it is followed by the plurality of electronic devices when using the communication system, a probing device attempts to detect presence of a listening device and parameters associated with a connection to be set up between the probing device and the listening device by sending a probe request packet directed to the listening device and sending, from the listening device, a probe response packet in response to the probe request packet, wherein the listening device bypasses at least one step of the protocol when sending the probe response packet.Type: GrantFiled: June 9, 2006Date of Patent: September 30, 2014Assignee: Atmel CorporationInventors: Katelijn Vleugels, Barry Thompson, Nils Bunger, Ilya Minkin
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Patent number: 8848731Abstract: System and method for facilitating data transfer between logic systems and a memory according to various conditions. Embodiments include systems and methods for facilitating and improving throughput of data transfers using a shared non-deterministic bus, a system and method for managing a memory as a circular buffer, and a system and method for facilitating data transfer between a first clock domain and a second clock domain. Embodiments may be implemented individually or in combination.Type: GrantFiled: July 19, 2011Date of Patent: September 30, 2014Assignee: QUALCOMM IncorporatedInventors: Srinjoy Das, Philip Crary, Alexander Raykhman
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Patent number: 8848732Abstract: A method of controlling connection between nodes in a digital interface whereby a first node that is a master node determines a second node to be the master and controls a point-to-point connection or a broadcast connection to another node. The first node having the display device determines the second node to be the master in accordance with a user selection, and transmits a connection command of a predetermined format for transmitting a data stream to the second node. The second node determined as the master in accordance with the transmitted connection command of the predetermined format is allocated with a channel and a bandwidth from an isochronous resource manager (IRM), and performs a point-to-point connection between the second node and the first node to transit the data stream. Thus, the transmission/reception, reproduction, and control of the data stream of the program can be smoothly performed.Type: GrantFiled: January 6, 2014Date of Patent: September 30, 2014Assignee: LG Electronics Inc.Inventors: Chang Hwan Jang, Jae Yoon Jeong
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Patent number: 8848733Abstract: A dual channel mode of operation (DCM) for a home entertainment network that can provide aggregate throughput associated with channel bonding without requiring that every device in the network be capable of channel bonding.Type: GrantFiled: April 27, 2012Date of Patent: September 30, 2014Assignee: Broadcom CorporationInventors: Avi Kliger, Yitshak Ohana
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Patent number: 8848734Abstract: A system and method for providing telecommunications special services to customers of a communications service provider includes receiving first communications signals from customer premise equipment. The first communications signals may be processed using a special services card to generate second communications signal. The second communications signal may be communicated to a line termination unit operating externally from a BBDLC. The second communications signal may be processed by the line termination unit to generate a third communications signal. The third communications signal may be communicated to a transport card operating in the BBDLC. By externally processing special services signals from the BBDLC, bandwidth of the BBDLC may be utilized more efficiently.Type: GrantFiled: October 22, 2008Date of Patent: September 30, 2014Assignee: CenturyLink Intellectual Property LLCInventors: Mark L. Wilmoth, Kendra Dwyer, Kelsyn D. S. Rooks, Jeffery Sweeney, Shekhar Gupta
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Patent number: 8848735Abstract: A method and device for MIMO transmission in high speed packet access evolution system, the method includes: determining each signaling in high speed shared information channel HS-SICH; duplexing all signaling as HS-SICH signaling; carrying channel coding for HS-SICH signaling, and mapping to the allocated channelization code resource.Type: GrantFiled: September 4, 2009Date of Patent: September 30, 2014Assignee: China Academy of Telecommunications TechnologyInventor: Yu Yang
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Patent number: 8848736Abstract: A method and an apparatus for transmitting data are provided. The method and the apparatus for transmitting data obtain reception information of a packet received by a reception apparatus on a virtual machine installed on an operating system of the data transmission apparatus, calculate a next sending rate based on the reception information, and transmit a packet according to the next sending rate.Type: GrantFiled: October 28, 2011Date of Patent: September 30, 2014Assignee: Samsung SDS Co., Ltd.Inventors: Joongbae Jeon, Kyoung-Jin Oh, Ju-Hyun Park, Kyo-Jun Ku, Sunghak Song
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Patent number: 8848737Abstract: There are provided methods for selecting a communication protocol for formatting data and for wirelessly transmitting data, preferably medical data, e.g., electrocardiogram data, methods for reducing data and/or selecting from data, methods for adding data, methods for generating trend data, methods for rendering data, methods for inputting and/or transmitting addressee data and for transmitting data to the addressee(s) and/or notifying the addressee(s), and methods for wirelessly transmitting data to a server and transmitting data from the server, as well as systems for carrying out such methods.Type: GrantFiled: November 10, 2011Date of Patent: September 30, 2014Assignee: Welch Allyn, Inc.Inventors: Mark R. Pierce, Jason G. Plackey, William J. Smirles
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Patent number: 8848738Abstract: There is provided an optical transmission device which includes a determiner, a convertor, and a switch. The determiner determines whether a frame includes a fixed stuff byte area or not when the frame is received from a first network, where the frame includes a payload area for storing client data and the fixed stuff byte area is for storing fixed data. When the determiner determines that the frame includes the fixed stuff byte area, a convertor to convert a fixed stuff byte area into the payload area and a switch switches a clock frequency from a first clock frequency used in the first network to a second clock frequency used in a second network when the frame including the converted fixed stuff byte area is output to the second network on the basis of the clock frequency as a reference.Type: GrantFiled: December 20, 2010Date of Patent: September 30, 2014Assignee: Fujitsu LimitedInventors: Ayumu Nonaka, Yuji Shimada, Syed Faruk Ahmed
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Patent number: 8848739Abstract: According to one general aspect, a method may include receiving at least a portion of a packet of data by an ingress device. The method may include determining an egress device to receive the packet. In some embodiments, the method may include dividing the received portion of the packet into a plurality of segments. The method may include editing, for each segment, a header to include an address field that indicates the address of the egress device, wherein the header is associated with a current segment. The method may include, for each segment, editing the header to include a next link field that indicates a link that will be used to transmit the next segment of the packet. The method may also include transmitting the current segment and header to the egress device via the link indicated in the next link field of the header of a preceding segment.Type: GrantFiled: November 20, 2009Date of Patent: September 30, 2014Assignee: Broadcom CorporationInventor: Brian A. Petersen
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Patent number: 8848740Abstract: Embodiments related to retransmission in data communication systems are described and depicted. In one embodiment, a data packet is received and separated to a plurality of data fragments. Information indicating whether a fragment of the plurality of fragments is to be protected by retransmission is provided or information indicating whether a group of fragments is to be protected by retransmission is provided. A request for retransmission from the second transceiver unit to the first transceiver unit may be generated. Based on the request, one or more identified data fragments may be retransmitted.Type: GrantFiled: April 17, 2012Date of Patent: September 30, 2014Assignee: Infineon Technologies AGInventors: Bernd Heise, Michael Horvat, Gert Schedelbeck, Dietmar Schoppmeier
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Patent number: 8848741Abstract: A method of offloading data intensive tasks from a processor, comprises, at a processor, preparing a TCP packet comprising a TCP header and a data payload, transmitting the TCP packet to a configurable logic device (CLD); and at the CLD, receiving the TCP packet, generating set of TCP segment packets containing, a copy of the TCP header, an incrementing segment sequence identifier, and a portion of the data payload, and transmitting the set of TCP segment packets on an external network interface.Type: GrantFiled: June 21, 2012Date of Patent: September 30, 2014Assignee: BreakingPoint Systems, Inc.Inventors: Brent Aaron Cook, Michael Moriarty
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Patent number: 8848742Abstract: Certain aspects of the present disclosure relate to techniques for adjusting transmission gap between Multicast Broadcast Single Frequency Network (MBSFN) symbols and non-MBFSN symbols within a MBSFN subframe.Type: GrantFiled: September 23, 2010Date of Patent: September 30, 2014Assignee: QUALCOMM IncorporatedInventors: Xiaoxia Zhang, Tao Luo
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Patent number: 8848743Abstract: A method of communicating count value information in an Optical Transport Network (OTN) signal frame. The method comprises determining a count value indicating a number of payload bytes to be sent in a next OTN signal frame; determining that a change in the count value (?) with respect to a current count value is within a predetermined range; selecting an inversion pattern indicating the change in the count value; determining a cyclic redundancy check (CRC) code associated with the inversion pattern; and, inserting the inversion pattern and the CRC code in a Generic Mapping Procedure (GMP) overhead of the OTN signal frame.Type: GrantFiled: November 29, 2012Date of Patent: September 30, 2014Assignee: PMC-Sierra US, Inc.Inventor: Steven Scott Gorshe
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Patent number: 8848744Abstract: Embodiments are directed towards resynchronizing the processing of a monitored flow based on hole detection. A network monitoring device (NMD) may be employed to passively monitor flows of packets for a session between endpoints. The NMD may receive copies of the monitored flow and perform processes on the monitored flow. In some situations, some copies of packets may not be fully processed by the NMD, creating a hole in the processing. If a hole is detected in the monitored flow and the processing of the monitored flow is desynchronized, then the NMD may suspend processing until it is resynchronized or for a remainder of the session. If the processing is desynchronized, then the NMD may resynchronize the processing by resuming the processing of the monitored flow at a downstream position of the monitored flow based on the detected hole.Type: GrantFiled: March 15, 2013Date of Patent: September 30, 2014Assignee: Extrahop Networks, Inc.Inventors: Jesse Abraham Rothstein, Arindum Mukerji, Bhushan Prasad Khanal
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Patent number: 8848745Abstract: A system, method, and computer program product for allowing a first processor to access flash or other non-volatile memory that is associated with a second processor. The first processor obtains parameters that allow the initialization of an internet protocol (IP) stack. The parameters can be obtained using the trivial file transfer protocol (TFTP), for example. The first processor communicates with the second processor using a socket protocol, sending a command word that represents either a read or write command. The command word specifies where in the non-volatile memory the access is to occur, and for how many bytes. Information is then returned to the first processor, allowing the first processor to verify the success of the access.Type: GrantFiled: August 16, 2007Date of Patent: September 30, 2014Assignee: Broadcom CorporationInventors: Pinar Taskiran, Karthik Balasubramanian, Jean Cyr
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Patent number: 8848746Abstract: Device and methods determine timing parameters and associated timing actions from timing messages in communication packets. The timing messages may be encapsulated with a plurality of communication protocols. An example timing message may be an IEEE 1588 timing message encapsulated in an Internet protocol packet encapsulated in an Ethernet protocol packet. The protocols are matched in classifier blocks by comparing portions of the packet to bit values or ranges of values. Operation of other than the first classifier block depends on results of matching in the preceding block by using offset values passed between blocks that indicate starting points for the matching. The final classifier block matches values in timing messages to identify timing parameters and associated timing actions in the message.Type: GrantFiled: June 30, 2010Date of Patent: September 30, 2014Assignee: Vitesse Semiconductor CorporationInventors: Ron Swartzentruber, Wiliam D. Lopoulos
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Patent number: 8848747Abstract: A method for recovering an OTUk frame includes: receiving an optical signal sent by using a method of multi-lane distribution from the OTUk frame to an interface of an optical module; converting the optical signal into an electrical signal, performing electrical equalization and demodulation on the electrical signal, and recovering multi-lane data from the demodulated signal; aligning and rearranging the data on each lane, according to a lane sequence identifier included in an overhead frame header of the data on each lane; and recovering the OTUk frame according to the aligned and rearranged data. According to the present invention, lane rearrangement is performed by detecting the lane sequence identifier, and the recovery of the OTUk frame is achieved. Therefore, a training sequence overhead does not need to be additionally introduced, and the influence on the system performance is avoided.Type: GrantFiled: January 11, 2012Date of Patent: September 30, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Li Zeng, Chan Zhao, Changsong Xie
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Patent number: 8848748Abstract: Methods and systems for delivery of high peak power optical pulses through optical fiber are disclosed. Raman soliton generation is utilized to maintain the properties of the pulses in the delivery fiber. The apparatus can comprise any high peak power pulse source and delivery fiber supporting Raman soliton generation.Type: GrantFiled: January 25, 2012Date of Patent: September 30, 2014Assignee: IMRA America, Inc.Inventors: Gyu Cho, Jingzhou Xu
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Patent number: 8848749Abstract: A light radiating device capable of reducing production costs and preventing sealing defects for a display device, and a method of fabricating an organic light emitting diode (OLED) display device using the same are provided. The light radiating device includes a light source to generate light and a light modifier, including a transmissive region and a non-transmissive region, that define an exposure region on a substrate. The method includes applying a frit to at least one of a first substrate having a pixel region and a second substrate, plasticizing the frit, and aligning the first substrate, the second substrate, and a light radiating device to define an exposure region on the at least one of the first substrate and the second substrate, and radiating the light to the frit to couple the first substrate and the second substrate.Type: GrantFiled: February 24, 2010Date of Patent: September 30, 2014Assignee: Samsung Display Co., Ltd.Inventor: Tae-Wook Kang
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Patent number: 8848750Abstract: An optical pulse source comprising a DPSS pump laser, a photonic crystal fiber (PCF), and acousto-optic modulator (AOM) gating device is disclosed. The pump pulses are coupled through lenses to the AOM gating device, which is synchronized to the pump laser and is operable to gate the pump pulses to a reduced repetition rate Rr=Rf/N, where Rf is the pump laser fundamental frequency. The pulses from the AOM are injected via optics into the PCF. Propagation through the PCF causes the pulses to broaden spectrally to produce optical supercontinuum pulses. An optical pulse source that further includes an acousto-optical tunable filter (AOTF) operable to convert the optical supercontinuum pulses into wavelength variable output pulses is also provided. A method of scaling the energy of the optical supercontinuum pulses is also disclosed.Type: GrantFiled: December 9, 2008Date of Patent: September 30, 2014Assignee: Fianium Ltd.Inventors: John Clowes, Anatoly Grudinin, Ian Godfrey
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Patent number: 8848751Abstract: A master oscillator power amplifier (MOPA) system includes an oscillator having a neodymium-doped gadolinium vanadate gain-medium and delivering seed-pulses. A length of single mode fiber is used to broaden the spectrum of the seed pulse. An amplifier having a neodymium-doped yttrium vanadate gain-medium amplifies the spectrally broadened seed-pulses. The gain-spectrum of the amplifier partially overlaps the broadened pulse-spectrum, providing spectral selection of the seed-pulses in addition to amplification. This provides amplified output-pulses having a duration about one-third that of the corresponding seed-pulses.Type: GrantFiled: February 27, 2013Date of Patent: September 30, 2014Assignee: Coherent GmbHInventor: Stefan Spiekermann
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Patent number: 8848752Abstract: Signal generating systems and methods are described. One signal generation system includes first and second lasers configured to generate first and second laser beams having respective frequencies wherein a difference in the respective frequencies corresponds to an output frequency, a photodetector configured to produce a signal at the output frequency, and first and second electro-optic modulators configured to respectively electro-optically modulate the first and second laser beams using the signal to produce respective first and second modulated optical signals, each of the first and second modulated optical signals having a respective sideband corresponding to the frequency of the other one of the first and second laser beams. The first laser is seeded with the respective sideband of the second modulated optical signal and the second laser is seeded with the respective sideband of the first modulated optical signal to phase-lock the first and second laser beams to each other.Type: GrantFiled: January 18, 2012Date of Patent: September 30, 2014Assignee: Phase Sensitive Innovations, Inc.Inventors: Dennis W. Prather, Garrett Schneider, Janusz Murakowski
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Patent number: 8848753Abstract: A diode laser assembly including a plurality of diode bars disposed on a generally flat base plate and being oriented to emit a plurality of laser beams in a first direction. A reflector is spaced in the first direction from each of the diode bars in the first. Each reflector has at least two reflecting surfaces, one for reflecting the laser beams into a second direction different from the first direction and the other for reflecting the laser beams into a third direction different from the first and second directions to produce a spatially combined laser beam. Each reflector is moveable relative to one another and to the diode bars for adjusting the individual laser beams within the spatially-combined laser beam for optimizing the quality of the spatially combined laser beam.Type: GrantFiled: January 20, 2012Date of Patent: September 30, 2014Assignee: Dilas Diode Laser Inc.Inventor: Tobias Koenning
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Patent number: 8848754Abstract: Semiconductor structures for laser devices are provided. The semiconductor structures have a quantum cascade laser structure comprising an electron injector, an active region, and an electron extractor. The active region comprises an injection barrier, a multiquantum well structure, and an exit barrier. The multiquantum well structure can comprise a first barrier, a first quantum well, a second barrier, a second quantum well, and a third barrier. The energies of the first and second barrier are less than the energy of the third barrier. The energy difference between the energy of the second barrier and the energy of the third barrier can be greater than 150 meV and the ratio of the energy of the third barrier to the energy of the second barrier can be greater than 1.26.Type: GrantFiled: August 22, 2012Date of Patent: September 30, 2014Assignee: Wisconsin Alumni Research FoundationInventors: Dan Botez, Jae Cheol Shin
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Patent number: 8848755Abstract: A system and method for providing laser diodes with broad spectrum is described. GaN-based laser diodes with broad or multi-peaked spectral output operating are obtained in various configurations by having a single laser diode device generating multiple-peak spectral outputs, operate in superluminescene mode, or by use of an RF source and/or a feedback signal. In some other embodiments, multi-peak outputs are achieved by having multiple laser devices output different lasers at different wavelengths.Type: GrantFiled: December 5, 2013Date of Patent: September 30, 2014Assignee: Soraa Laser Diode, Inc.Inventors: James W. Raring, Mathew C. Schmidt, Yu-Chia Chang
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Patent number: 8848756Abstract: A surface plasmon laser includes a metal layer, a gain medium layer provided on the metal layer and having a circular structure portion in which a whispering gallery mode is generated in which surface plasmon light generated due to surface plasmon resonance on an interface with the metal layer rotates along a circle, and a deformed portion formed to output part of laser light generated in the circular structure portion of the gain medium layer.Type: GrantFiled: September 17, 2012Date of Patent: September 30, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-soong Lee, Un-jeong Kim, Young-geun Roh, Yeon-sang Park
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Patent number: 8848757Abstract: A VCSEL array device formed of a monolithic array of raised VCSELs on an electrical contact and raised inactive regions connected to the electrical contact. The VCSELs can be spaced symmetrically or asymmetrically, in a manner to improve power or speed, or in phase and in parallel. The VCSELs include an active region positioned between two mirrors generating a pulsed light operating at a frequency of at least 1 GHz. The VCSELs having an output power of at least 120 mW. The raised VCSELs and raised inactive regions are positioned between the electrical contact and an electrical waveguide.Type: GrantFiled: March 31, 2011Date of Patent: September 30, 2014Assignee: Trilumina Corp.Inventor: John Joseph
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Patent number: 8848758Abstract: A gas-discharge waveguide CO2 laser has a Z-shaped folded waveguide formed by three ceramic tubes. Ends of the adjacent tubes are shaped and fitted together to form a common aperture. The tubes are held fitted together by spaced-apart parallel discharge electrodes. Four minors are arranged to form a laser-resonator having a longitudinal axis extending through the tubes.Type: GrantFiled: November 11, 2013Date of Patent: September 30, 2014Assignee: Coherent, Inc.Inventors: Anthony J. DeMaria, R. Russel Austin
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Patent number: 8848759Abstract: An optical system includes a waveguide having a guiding core formed from erbium-doped yttrium aluminum garnet and a plurality of first cladding layers, wherein at least two of the first cladding layers are disposed adjacent opposite sides of the guiding core and a pump source for generating an electromagnetic radiation having a wavelength in the range of 900 to 1000 nanometers, wherein the pump source directs the electromagnetic radiation into at least the guiding core to pump the guiding core into an upper state.Type: GrantFiled: March 29, 2011Date of Patent: September 30, 2014Assignee: Lockheed Martin CorporationInventors: Glenn Bennett, Tiffanie G. D'Alberto, Robert Stoneman, Ross Mackes, Munib Jalali, Junith Rubin
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Patent number: 8848760Abstract: An optical apparatus comprises a waveguide substrate and an optical reference cavity. The optical reference cavity comprises an optical waveguide formed on the waveguide substrate and arranged to form a closed loop greater than or about equal to 10 cm in length. The RMS resonance frequency fluctuation is less than or about equal to 100 Hz. The Q-factor can be greater than or about equal to 108. The optical waveguide can exhibit optical loss less than or about equal to 0.2 dB/m for propagation of an optical signal along the optical waveguide. The closed loop path can comprise two or more linked spirals greater than or about equal to 1 meter in length and can occupy an area on the waveguide substrate less than or about equal to 5 cm2.Type: GrantFiled: March 15, 2013Date of Patent: September 30, 2014Assignee: California Institute of TechnologyInventors: Kerry Vahala, Tong Chen, Hansuek Lee, Myoung-Gyun Suh
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Patent number: 8848761Abstract: Methods and User Equipment (UE) apparatuses are provided for transmitting Reference Signals (RSs). A method includes receiving a cell-specific sequence-hopping parameter; receiving a UE-specific sequence-hopping parameter; determining a reference signal sequence based on the UE-specific sequence-hopping parameter; and transmitting the reference signal based on the determined reference signal sequence. Sequence hopping does not apply to the reference signal sequence if the cell-specific sequence-hopping parameter indicates that the sequence hopping is enabled and the UE-specific sequence-hopping parameter indicates that the sequence hopping is disabled.Type: GrantFiled: June 18, 2013Date of Patent: September 30, 2014Assignee: Samsung Electronics Co., LtdInventors: Aris Papasakellariou, Joon Young Cho