At Least One Bus Is A Ring Network Patents (Class 370/403)
  • Patent number: 10447652
    Abstract: The technology disclosed herein enables high availability bridging between Layer 2 (L2) networks. In a particular embodiment, a method includes high availability bridge cluster comprising a first bridge node and a second bridge node. The first and second bridge nodes include first and second active bridges and first and second standby bridges, respectively. The method provides, in the first active bridge, bridging network communications between two or more L2 networks. The second standby bridge acts as a failover bridge for the first active bridge. The method further provides generating a failure detection message that incorporates a hardware address of the first bridge node and transferring the failure detection message from the first bridge node to the second bridge node. In the second standby bridge, the method provides receiving the failure detection message and using the hardware address to synchronize bridging information between the first active bridge and the second standby bridge.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: October 15, 2019
    Assignee: Nicira, Inc.
    Inventors: Ganesan Chandrashekhar, Xiaohu Wang, Hongwei Zhu, Ankur Kumar Sharma, Vivek Agarwal
  • Patent number: 10447527
    Abstract: A communication system wherein, in each node, data transmission blocks transmit transmission data, and data relay blocks relay the transmission data from another node in a prior stage as relay data. Output switching units switch between outputting the transmission data and outputting the relay data as output data.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 15, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Ryusuke Ishizaki
  • Patent number: 10419335
    Abstract: In various embodiments, an apparatus, a non-transitory computer-readable media, and a method are provided, involving a capability to: receive an indication of a receipt of a first packet that is specified according to an Internet Protocol (IP) network protocol; identify, from a header of the first packet, network path information configured for use in identifying a plurality of path segment identifiers including a region scope-specific outside-scope identifier that: is in an identifier space specific to at least the current node, does not include a network interface identifier portion specified by the IP network protocol for identifying any network interface of any node, and identifies, for at least the current node, a second region of the network; and cause transmission, based on the region scope-specific outside-scope identifier of the network path information, of first data, along with at least one of the plurality path segment identifiers, from the current node to a path node.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: September 17, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10419334
    Abstract: In various embodiments, an apparatus, a non-transitory computer-readable media, and a method are provided, involving a capability to: based on a first outside-scope identifier included in a header of a first packet that is specified according to an Internet Protocol version 6 (-Pv6) network protocol and via a first network interface of the current node that is in a network path segment that includes a previous node and the current node, receive an indication of a receipt, from the previous node that is in a first region of the network, of the first packet, the first outside-scope identifier identifying, in the first region, a second region communicatively coupled to the previous node via the first network interface of the current node, where the header does not include a network interface identifier portion for the first outside-scope identifier for identifying the first network interface; identify, from the header of the first packet, a first operation identifier based on an association between the first ope
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: September 17, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10411998
    Abstract: In various embodiments, an apparatus, a non-transitory computer-readable media, and a method are provided, involving a capability to: receive an indication of a receipt of a first packet that is specified according to an Internet Protocol (IP) network protocol; identify, from a header of the first packet, network path information configured for use in identifying a plurality of path segment identifiers including a node scope-specific outside-scope identifier that: is in an identifier space specific to the current node, does not include a network interface identifier portion specified by the IP network protocol for identifying any network interface of any node, and identifies, for the current node, a first region of the network, where the network path, along which first data is transmitted, includes: a first path segment that communicatively couples the current node and the first region, and a second path segment in a second region; and cause transmission, based on the node scope-specific outside-scope identif
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: September 10, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10404583
    Abstract: In various embodiments, an apparatus, a non-transitory computer-readable media, and a method are provided, involving a technique to: based on a first outside-scope identifier and via a first network interface of the current node that is in a second network path segment including the previous node and the current node, receive an indication of a receipt of a first packet that is specified according to an Internet Protocol (IP) network protocol or a label forwarding paradigm, the first outside-scope identifier identifying, in a first region, a second region communicatively coupled to the previous node via the first network interface of the current node, where the first outside-scope identifier does not identify any network interface; identify, from a header of the first packet, a second outside-scope identifier that does not identify any network interface, the second outside-scope identifier identifying a third region that does not include the current node; and using the second outside-scope identifier, cause t
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: September 3, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10397100
    Abstract: In various embodiments, an apparatus, a non-transitory computer-readable media, and a method are provided, involving a capability to: receive an indication of a receipt of a first packet that is specified according to an Internet Protocol (IP) network protocol; identify, from a header of the first packet, network path information that is based on a first policy and includes: a region scoped outside-scope identifier that: is in an identifier space having a scope that spans a first region of the network, does not include a network interface identifier portion specified by the IP network protocol for identifying any network interface, and identifies, in the first region, a second region of the network, where the network path, along which first data is transmitted, includes: a first path segment that communicatively couples the current node and the second region, and a second path segment in the second region; and cause transmission, based on the region scoped outside-scope identifier, of the first data from the
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: August 27, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10389625
    Abstract: In one embodiment, an apparatus is provided comprising: a current node configured to: receive, from a next node, information that is configured for use in identifying an identifier in a node-specific identifier space specific to the next node that identifies a particular node for the next node; and map, based on the information, the identifier that identifies the particular node for the next node, to an identifier in a node-specific identifier space specific to the current node that identifies the particular node for the current node, the identifier that identifies the particular node for the current node having a meaning for the current node defined solely by the node-specific identifier space specific to the current node.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 20, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10389624
    Abstract: In various embodiments, a network controller is configured to: identify, for each of a plurality of nodes in a Multiprotocol Label Switching (MPLS) network, location information that identifies a location of a corresponding one of the plurality of nodes in a topology of the MPLS network accessible to the controller; receive, for each of the plurality of nodes in the MPLS network, identifier information that identifies a corresponding identifier in a corresponding identifier space which is specific to the corresponding one of the plurality of nodes and which is based on a metric space having an origin specific to the corresponding one of the plurality of nodes, where at least a portion of the plurality of nodes are in a span of a first portion of the MPLS network such that the corresponding identifier of each of the at least portion of nodes is unique in the span, and the corresponding identifier space of each of the at least portion of nodes is configured to have an identical origin, resulting in a scoped ide
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 20, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10382327
    Abstract: In various embodiments, an apparatus, a non-transitory computer-readable media, and a method are provided, involving: a current node configured to be positioned in a Multiprotocol Label Switching (MPLS) network, the current node including at least one non-transitory memory configured to store instructions, and one or more processors in communication with the at least one non-transitory memory, wherein the one or more processors is configured to execute the instructions to cause the current node to: detect first data to be transmitted to a receiving node; identify a sequence of node scope-specific identifiers that is selected from a plurality of node scope-specific identifiers based on at least one of: the current node, the receiving node, or a policy, where each of the node scope-specific identifiers of the sequence is in one of a plurality of node scope-specific identifier spaces that is specific to a corresponding one of a plurality of nodes in a path from the current node toward the receiving node, and eac
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 13, 2019
    Assignee: SITTING MAN, LLC
    Inventor: Robert Paul Morris
  • Patent number: 10366006
    Abstract: A computing apparatus, including at least one general computing core circuit, an internal interface circuit, an external interface circuit, a cache coherence engine circuit, and a protocol conversion circuit. The computing apparatus is coupled to an internal apparatus using the internal interface circuit, and is coupled to an external apparatus using the external interface circuit. When working in a first mode, the cache coherence engine circuit implements cache coherence between the computing apparatus, the internal apparatus, and the external apparatus, and in this case, the computing apparatus is used as a node controller. When working in a second mode, the cache coherence engine circuit processes only cache coherence between the computing apparatus and the internal apparatus, and the external interface circuit is used as a network interface circuit.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: July 30, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jianrong Xu, Wei Zheng
  • Patent number: 10356006
    Abstract: A master device includes an execution unit that repeatedly executes a program including input and output processes in slave devices. The execution unit executes the program to calculate first data and second data. The master device includes an assignment unit that assigns, in accordance with a first transmission period that is set to an integer multiple of the control period for the first data and a second transmission period that is set to an integer multiple of the control period for the second data and longer than the first transmission period, the first data to a packet in every first transmission period and the second data to a packet in every second transmission period.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: July 16, 2019
    Assignee: OMRON Corporation
    Inventor: Takeshi Kiribuchi
  • Patent number: 10341026
    Abstract: An optical bus system (1) having a start-up state and at least one operating state is disclosed. The optical bus system (1) includes a mechanical support structure (21) arranged to receive and hold a master module (2) having a downstream optical interface (3) and a set of slave modules (6) each having an upstream optical interface (7) and a downstream optical interface (8). The modules are attached to the mechanical support structure (21) such that optical interfaces of adjacent modules are aligned and in close proximity to each other in order to enable optical communication (24, 25) between adjacent modules. Each slave module (6) is further provided with circuitry to form one or two shunting signal paths (30, 31) depending on operating state after an addressing procedure is completed in the start-up state. Hereby, it is e.g. possible to realize a robust and cost-efficient optical bus system with high bandwidth capability.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: July 2, 2019
    Assignee: AROS ELECTRONICS AB
    Inventors: Jerker Hellström, Per Lundberg, Magnus Wide
  • Patent number: 10319033
    Abstract: The technology detects undesirable data packets. Data packets are received from multiple sources at one or more packet switches in a data communications network. The one or more packet switches route the data packets to one or more intended destination computing nodes and also transmit a copy of all the data packets received in the data communications network to a network capture device. The network capture device processes the data packets, detects financial data packets, and transmits the detected financial data packets for analysis by a risk exposure computer system that performs automatic financial risk analysis based on the detected financial data packets.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 11, 2019
    Assignee: Nasdaq, Inc.
    Inventors: Brian Kreider, Stephen Cooper
  • Patent number: 10313941
    Abstract: Described herein are apparatus, systems and methods for improved mobility between wireless networks. A method may comprise, at a user equipment (“UE”) in communication with a cellular network activating a detach timer for the cellular network, detecting a short-range network, communicating with the short-range network, storing registration and bearer context data related to the cellular network, interrupting communication with the cellular network, and prior to the expiration of the detach timer, reconnecting to the cellular network via a service request without using an attach procedure.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: June 4, 2019
    Assignee: APPLE INC.
    Inventors: Venkateswara Rao Manepalli, Lakshmi N. Kavuri, Madhusudan Chaudhary, Srinivasan Nimmala, Jianxiong Shi
  • Patent number: 10289575
    Abstract: A packet processing system having each of a plurality of hierarchical clients and a packet memory arbiter serially communicatively coupled together via a plurality of primary interfaces thereby forming a unidirectional client chain. This chain is then able to be utilized by all of the hierarchical clients to write the packet data to or read the packet data from the packet memory.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: May 14, 2019
    Assignee: Cavium, LLC
    Inventors: Enrique Musoll, Tsahi Daniel
  • Patent number: 10271347
    Abstract: The invention relates to a method for requesting uplink resources by a user equipment in a communication system, wherein a DRX, Discontinued Reception, function is running at the user equipment. The transmission of a scheduling request for requesting uplink resources to a radio base station is triggered upon triggering of a buffer status report in the user equipment. However, the triggering of the scheduling request is delayed such that the scheduling request is triggered in one of the subframes—preferably the first subframe—of an On-Duration period of a DRX cycle according to the DRX function. Correspondingly, the triggered scheduling request is transmitted to the radio base station in the next possible scheduling request transmission occasion after the triggering of the scheduling request is delayed.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 23, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Joachim Loehr, Prateek Basu Mallick
  • Patent number: 10270694
    Abstract: Systems and methods are provided for routing a message in a network. A bit length of an identifier field of a received message is identified. A lookup table is selected based on the bit length of the identifier field. The identifier field is used as a reference for the lookup table to identify a bus for the message, and the message is forwarded to the bus.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 23, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Dehuan Meng, Biing Long Shu, Hugh Walsh, Fei Wu
  • Patent number: 10027639
    Abstract: There is provided an information processing apparatus including an encrypted-ID generation section which encrypts a unique ID to generate an encrypted ID, the unique ID being set as an ID unique to the information processing apparatus, a communication section which sends the encrypted ID as ID information to be sent to another apparatus, an individualization code holding section which holds, in advance, an individualization code capable of being generated by decrypting the ID information in the other apparatus, and an access key generation section which generates an access key used for authentication with the other apparatus based on the individualization code held by the individualization code holding section.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: July 17, 2018
    Assignee: SONY CORPORATION
    Inventors: Hideo Yoshimi, Katsuya Shimoji
  • Patent number: 9954771
    Abstract: A packet processing system comprises a plurality of packet processing nodes configured to process packets. The packet processing nodes are arranged in a plurality of packet processing clusters. The packet processing system also includes a plurality of prefetch buffers respectively associated with different ones of the packet processing clusters. A first prefetch buffer of the plurality of prefetch buffers is associated with a first packet processing cluster and is configured to store packets distributed for processing to the first packet processing cluster when the first packet processing clusters does not include any packet processing nodes available for processing of the packets.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: April 24, 2018
    Assignee: Marvell Israel (M.I.S.L) Ltd.
    Inventors: Gil Levy, Itay Peled, Galia Peleg
  • Patent number: 9940270
    Abstract: A data processing system includes a plurality of processing unit. Each processing unit includes notification storage circuitry configured to store a notification indicator corresponding to each processing unit which indicates whether the processing unit has an outstanding coherent memory request, and multiple request storage circuitry configured to store a multiple request indicator corresponding to each processing unit which indicates whether the processing unit has more than one outstanding request. The data processing system also includes an interconnect network coupled between the processing units and configured to broadcast coherent memory requests from a requesting processing unit of the plurality of processing units to other processing units of the plurality of processing units.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: April 10, 2018
    Assignee: NXP USA, Inc.
    Inventor: Fernando A. Morales
  • Patent number: 9825866
    Abstract: Methods and systems for selecting among multiple concurrently active paths through a network are provided. According to one embodiment, a method is performed by a network interface of a source network device within a loop-free, reverse-path-learning network. The network is divided into multiple virtual local area networks (VLANs). Network traffic destined for a destination network device and specifying an address for the destination or including information from which the address can be derived is received from the source. A set of VLANs that can be used to transport the packet from the source to the destination is determined. Each VLAN in the set of VLANs is associated with a different path through the network from the source to the destination. A particular VLAN from the set of VLANs networks is selected, thereby effectively selecting a particular path from multiple selectable paths between the source and the destination.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: November 21, 2017
    Assignee: Fortinet, Inc.
    Inventors: Bert H. Tanaka, Daniel J. Maltbie, Joseph R. Mihelich
  • Patent number: 9811487
    Abstract: Example embodiments may include a method for configuring an interface that includes determining information for a configuration of an interface of a first device including a plurality of SERDES slices having a plurality of connections to a second device over the interface; and configuring a back channel layer associated with the first device to form a back channel path to carry a message between a transmitter and a receiver of the first device based on the configuration of the plurality of connections to the second device. The transmitter can be in a first SERDES slice of the plurality of SERDES slices and the receiver is in a second SERDES slice of the plurality of SERDES slices.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 7, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Srividhya Nagarajan, Wei-Min Cheng, Lalit Kumar, Deepak S. Mayya
  • Patent number: 9787682
    Abstract: In a method for securely connecting a controller for a machine or plant to a higher-level IT system, an integration layer is provided between the controller and the IT system, a controller image of the controller is generated in the integration layer, and the controller image is accessed from the IT system. The IT system thus always accesses the controller image rather than directly the controller. This prevents malware from gaining access to the controller e.g. via a network.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 10, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johannes Birzer, Rainer Ordenewitz
  • Patent number: 9774741
    Abstract: Methods and systems for routing multimedia traffic are described. A method may include receiving a communication originating from a user, transposing an alias transport network over one or more existing networks to route the communication, and routing the communication based on mapping rules.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: September 26, 2017
    Assignee: UNITED SERVICES AUTOMOBILE ASSOCIATION (USAA))
    Inventors: Vijay Jayapalan, Susan Blake, Frederick Eugene Diehl, Jr., Jerry Scott Beene, Michael Sjolander
  • Patent number: 9734140
    Abstract: There is disclosed a method, apparatus and computer program for parsing a message using a message model. A message is received comprising one or more message fields. This message is stored as a reference bitstream. The message model is used to compare a message field in one or more subsequently received messages with the equivalent field in the reference bitstream. Finally, responsive to determining that a message field in said one or more subsequently received messages matches a field in the reference bitstream a predetermined number of times, storing parser outputs for the matching field for future reuse.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: August 15, 2017
    Assignee: International Business Machines Corporation
    Inventor: Timothy Kimber
  • Patent number: 9736276
    Abstract: In one embodiment, the present invention includes a fabric on a first semiconductor die to communicate with at least one agent on the die according to an on-chip protocol and a packetization layer coupled to the fabric to receive command and data information from the fabric on multiple links and to packetize the information into a packet for transmission from the die to another die via an in-package packetized link. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 15, 2017
    Assignee: Intel Corporation
    Inventors: Mahesh Wagh, Abhishek Singhal, Jasmin Ajanovic
  • Patent number: 9544534
    Abstract: Multiple cameras are operatively connected over a shared link to a video server on a video network. The cameras are operated to capture a plurality of video streams. Each video stream has intra-frames and predictive frames that are sequentially generated timewise apart. A number of the video streams that transmit over the shared link on the network is identified. A number of intra-frames that are generated substantially simultaneously in the identified video streams is also identified. The identified intra-frames in the video streams are offset in time to minimize video artifacts from being present in the video streams being transmitted over the shared link.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: January 10, 2017
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Tyrone D Bekiares, Hinrich A Schmidt, Steven D. Tine
  • Patent number: 9467289
    Abstract: A network security system comprises a first component that generates an address for identifying a communicating device on a network. A second component receives the address generated by the first component and facilitates transitioning from an existent address to the generated address. Such transitioning is effectuated in order to protect the network against attack while providing seamless communications with respect to the communicating device.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: October 11, 2016
    Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: Mark B. Anderson, David D. Brandt, Ramdas M. Pai, Taryl J. Jasper
  • Patent number: 9462091
    Abstract: There is provided an information processing apparatus including a plurality of communication units connected to one another in a ring shape by a bus, each of the plurality of communication units being connected to one of processing units, each of which executes a predetermined process, and transmitting data processed by the one of the processing units to the bus as a packet, the information processing apparatus transferring data between the processing units and processing the data in a predetermined order. Among the plurality of communication units, in at least one communication unit, a packet including a value indicative of suspension of the process is generated when the connected processing unit has suspended a process, and information showing whether or not the generation unit has generated the packet including the value indicative of suspension of the process is stored.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: October 4, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Hara, Hisashi Ishikawa
  • Patent number: 9444913
    Abstract: A multi-ring reliable messaging system is formed by interconnecting a plurality of token rings via a pair of gateways that includes an active gateway that is configured to communicate with the token rings and a standby gateway that also is configured to communicate with the token rings. The active gateway receives an original message via a first token ring, generates an associated message for a second token ring based on the original message, and propagates the associated message toward the second token ring. The active gateway supports total order delivery of messages within the token rings and causal-order delivery of messages between the token rings. The standby gateway monitors for original and associated messages received via the token rings in a manner for preventing loss of messages when the active gateway fails.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 13, 2016
    Assignee: Alcatel Lucent
    Inventors: Roger J. Maitland, Michael J. Richer
  • Patent number: 9436519
    Abstract: A process cooperation method includes storing in a first storage device a first process result as a result of execution of a first process by a first processor and transmitting the first process result to a second processor, storing in a second storage device a second process result as a result of execution of a second process by the second processor based on the first process result received from the first processor, and transmitting the second process result to a third processor, and moreover transmitting the second process result and an identifier identifying the third processor to the first processor, and storing in the first storage device the second process result and the identifier received from the second processor by the first processor in association with the first process result.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: September 6, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Nobutaka Imamura
  • Patent number: 9325599
    Abstract: A method for providing a status to a plurality of devices in a distributed VoIP system includes circulating a first status data packet between each device in the first group of devices and circulating a second status data packet between each device in the second group of devices. One device in the first group of devices participates in circulating both the first status data packet and the second status data packet, while the other devices in the first group of devices circulate only the first status data packet. One device in the second group of devices participates in circulating both the first status data packet and the second status data packet, while the other devices in the second group of devices circulate only the second status data packet.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: April 26, 2016
    Assignee: ShoreTel, Inc.
    Inventors: Nam Do, Vu Hwang
  • Patent number: 9292386
    Abstract: A system stores at least one item of connection information for each of a plurality of processing systems. The system receives a request from the requesting apparatus and, in response to receiving the request, sets a status related to one item of the connection information stored in the storage unit for connection to one of the processing systems. The system transmits the received request to the one processing system by using the one item of connection information and receives a response denoting a result of the processing from the one processing system. Responsive to receiving the response, the system releases the status related to the one item of connection information, and transmits the response to the requesting apparatus.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: March 22, 2016
    Assignee: International Business Machines Corporation
    Inventors: Noriaki Kohno, Hideki Nagasawa
  • Patent number: 9276621
    Abstract: A differential communication system includes a first differential communication device including a differential transmitter, a second differential communication device including a differential receiver, and a differential isolator coupling the differential transmitter to the differential receiver. The differential receiver includes a comparator operative to develop waveform region information from the received waveform, a filter adapted to remove noise from the received waveform using the waveform region information, and an adaptive sampler adapted to adjust a received waveform sampling point after it has been filtered.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: March 1, 2016
    Assignee: Maxim Intergrated Products, Inc.
    Inventors: Erik S. Wheeler, Bryan A. Mueller, Mark R. Plagens, Urs Mader
  • Patent number: 9258208
    Abstract: In one embodiment, a method comprises creating, in a computing network, a hierarchal routing topology for reaching a destination, the hierarchal routing topology comprising a single parent supernode providing reachability to the destination, and a plurality of child supernodes, each child supernode comprising one or more exit network devices each providing a corresponding link to the parent supernode; receiving, in one of the child supernodes, a data packet for delivery to the destination; causing the data packet to traverse along any available data link in the one child supernode independent of any routing topology established by network devices in the one child supernode, until the data packet reaches one of the exit network devices; and the one exit network device forwarding the data packet to the parent supernode, via the corresponding link, for delivery to the destination.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: February 9, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Jonathan Martin, Patrick Wetterwald
  • Patent number: 9251554
    Abstract: Signal flows for data-processing applications may be implemented so as to enable each processing node in the flow when it contains a sufficient amount of input data at its input buffer. In various embodiments, such signal flows can be graphically defined in a GUI tool which, thereafter, auto-generates suitable code for implementing the signal flow.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: February 2, 2016
    Assignee: ANALOG DEVICES, INC.
    Inventor: Raka Singh
  • Patent number: 9253061
    Abstract: A health check mechanism for an overlay network may employ tunneling technology. A health check packet may be sent between endpoints. The health check packet may be recognized in the network and may initiate a health check process on receipt. In some embodiments, the health check packet may include a signature recognized by the network. A destination endpoint, upon receipt of the health check packet, may provide health check statistics to a source endpoint.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 2, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Uday Shankar Nagaraj
  • Patent number: 9203644
    Abstract: A unique RVID is used for each spoke node to identify traffic flowing from that spoke node to the hub and from the hub to the spoke. Spoke nodes perform MAC learning on any frame containing their assigned unique RVID and only bridge traffic received on the ring to a client port if the traffic contains their assigned RVID. Thus, MAC learning at the spoke is localized to client routes, or to routes of interest that pass through the hub. The hub node learns C-VID/RVID-ringport bindings for traffic on the ring. When a frame is received on the ring, the hub will use the C-VID and RVID to determine the I-SID and forward the traffic onto the external network. When a frame is received from the external network, the hub node will use the I-SID & C-VID to determine the RVID of the spoke node, and then use the C-VID & RVID to determine, from its forwarding database, which ringport should be used to output the frame.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: December 1, 2015
    Assignee: Ciena Corporation
    Inventors: Marc Holness, Abdullah Bashar, Marc-Andre Rochon
  • Patent number: 9065582
    Abstract: Data center network architectures, systems, and methods that can reduce the cost and complexity of data center networks. Such data center network architectures, systems, and methods employ physical optical ring network and multi-dimensional network topologies and optical nodes to efficiently allocate bandwidth within the data center networks, while reducing the physical interconnectivity requirements of the data center networks. The respective optical nodes can be configured to provide various switching topologies, including, but not limited to, chordal ring switching topologies and multi-dimensional chordal ring switching topologies.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: June 23, 2015
    Assignee: PLEXXI INC.
    Inventors: Richard A. Barry, David J. Husak, Derek E. Spock, Matthew William Morgan, Peter B. Everdell, Ruoding Li
  • Patent number: 9021126
    Abstract: A data processing apparatus includes multiple processing means that are connected in a ring shape via corresponding communication means respectively. Each communication means includes a reception means for receiving data from a previous communication means, and a transmission means for transmitting data to a next communication means. Connection information is assigned to each of the reception means and the transmission means. The communication means, when receiving a packet that has same connection information as one assigned to its reception means, causes the corresponding processing means to perform data processing on the packet, sets the connection information assigned to its transmission means to the packet, and transmits the packet to the next communication means, and when receiving a packet that has connection information that is not same as one assigned to its reception means, transmits the packet to the next communication means without changing the connection information of the packet.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: April 28, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hisashi Ishikawa
  • Patent number: 8995476
    Abstract: A data processing apparatus includes an input unit to input data and processing modules. The processing modules may be connected as part of a ring-shaped data transfer path to transfer data in one direction. Each processing module includes a communication unit configured to implement a first data processing path and a setting path and a processing unit configured to process data received by the communication unit. When using switching data to switch the processing modules performing on the first data processing path to the processing modules performing on the setting path, the switching data is processed on the first data processing path.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Sakamoto, Hisashi Ishikawa
  • Patent number: 8989220
    Abstract: In one embodiment, a system includes a station circuit. The station circuit includes a data layer and a transport layer. The station circuit is capable of a source mode and a destination mode. The data layer of the station circuit in source mode disassembles a source packet into one or more source parcels and sends the one or more source parcels to the transport layer. The station circuit in destination mode receives the one or more destination parcels over a ring at its transport layer, reassembles the one or more destination parcels into a destination packet, and delivers the destination packet from the transport layer to the data layer. The transport layer of the station circuit in source mode transmits the one or more source parcels over the ring. The transport layer of the station circuit in destination mode receives the one or more destination parcels over the ring.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: March 24, 2015
    Assignee: Cavium, Inc.
    Inventors: Paul G. Scrobohaci, Ahmed Shahid, Bryan W. Chin, Leo Chen
  • Patent number: 8971820
    Abstract: A data communication emulating unit (18) in a user terminal (10) or a proxy device monitors communication between an application unit (16) in the user terminal and a proxy unit of the proxy device, which communication employs requests (REQ) and responses (RES) based on a data communication protocol. The data communication emulating unit then determines a communication pattern of the monitored communication, evaluates if the communication is efficient or not based on the communication pattern and changes communication strategy if the communication pattern is found to be inefficient. Change in strategy is performed through disrupting communication between the application unit and the proxy unit using the data communication protocol and instead ensuring that communication between the proxy unit and application unit is performed based on a signalling protocol via a signalling communication unit (20).
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: March 3, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Peter Yeung
  • Patent number: 8964526
    Abstract: The present invention provides a method for classifying media access control (MAC) address based on an Ethernet ring network, and the method comprises: when the Ethernet ring network is carrying out initialization, a node of the ring classifies the MAC address corresponding to a non-ring port in its own forward database (FDB) into a MAC address group, and takes its own MAC address as the index of the MAC address group. A node of the ring broadcasts a message carrying the MAC address group indexed by its own MAC address in the Ethernet ring network; the node of the ring receiving the message completes the classification of the MAC address corresponding to the ring port in its own FDB by adding the MAC address group carried by the message into its own FDB. The present invention also provides a device for classifying media access control (MAC) address based on Ethernet ring network.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: February 24, 2015
    Assignee: ZTE Corporation
    Inventor: Xiaoli Song
  • Patent number: 8908566
    Abstract: The communication management device includes a logical-ring configuring unit that determines a transmission order of a token frame in a network and configures a logical ring; a multicast-address generating unit that generates a multicast address from a MAC address of the communication management device; a multicast-address notifying unit that notifies a slave station configuring the logical ring of the multicast address; and a token-frame processing unit and a data-frame-communication processing unit that transmit a frame having a destination address to which the multicast address is set, and not performing a receiving process of a frame when a destination address of the received frame does not coincide with the multicast address.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: December 9, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masato Nakamura, Tatsumi Yabusaki, Tomitsugu Sugimoto
  • Patent number: 8902910
    Abstract: In a ring-of-clusters network topology, groups of slave devices are accessed in parallel, such that the latency around the ring is proportional to the number of clusters and not proportional to the number of integrated circuits. The devices of a cluster share input and output ring segments such that packets arriving on the input segment are received and interpreted by all the devices in a cluster. In other embodiments, none, some or all but one slaves per cluster are asleep or otherwise disabled so that they do not input and interpret incoming packets. Regardless, in all embodiments, the slaves of a cluster cooperate, potentially under the controller's direction, to ensure that at most one of them is actively driving the output segment at any given time. The devices may be addressed through a device ID, a cluster ID, or a combination thereof. Embodiments of the invention are suited to exploit multi-chip module implementations and forms of vertical circuit stacking.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: December 2, 2014
    Assignee: Conversant Intellectual Property Management Inc.
    Inventor: Steven Przybylski
  • Patent number: 8891538
    Abstract: In one embodiment, a router maintains a communication session between a local terminal unit and a remote terminal unit, the local terminal unit interconnected to the router over a local serial data link, and the remote terminal unit interconnected to the router over an Internet Protocol (IP) session via a remote router and a corresponding remote serial data link. The router may then monitor a state of the local serial data link, and communicates this state with the remote router over the IP session, as well as a remote state of the remote serial data link. The router may then correspondingly control the state of the local serial data link to match the remote state of the remote serial data link.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: November 18, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Ravikumar S. Chandrasekaran, Jean-Philippe Vasseur, Shmuel Shaffer
  • Patent number: 8880641
    Abstract: A method for redundant communication in a communication system having a plurality of communication networks connected to one another by at least one node, wherein data that originates from a first communication network is prevented from being transmitted back from the second the communication network into the first communication network as a result of information that is predefined before the transmission.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: November 4, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Franz-Josef Götz, Dieter Klotz, Joachim Lohmeyer
  • Patent number: 8804760
    Abstract: Systems and methods enable maximizing network data throughput via optimizing network capacity allocation. The network throughput maximization system comprises a network transporting data from source nodes to a destination node of the network, buffers for buffering data bytes to be sent from the source nodes to the destination node, and distributed algorithms performed by the destination and source node that cyclically optimize allocation of the network capacity among the source nodes according to the amounts of data bytes written in the buffers at the source nodes. The network data transport capacity allocation optimization method comprises steps of buffering at network source nodes data bytes to be transported to a network destination node, and cyclically optimizing by the destination and source nodes the data transport capacity allocation among the source nodes based on the relative volumes of bytes written in the source node buffers associated with the destination node.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: August 12, 2014
    Inventor: Mark Henrik Sandstrom