Patents Examined by Soon D. Hyun
  • Patent number: 7760677
    Abstract: In one among many embodiments, the invention provides a system including an interrogator communicating to a selected one or more of a number of communications devices. A plurality of communications devices select random values independently of random values selected by other devices. The interrogator transmits a first signal requesting devices within a specified group of devices to respond, the specified group being less than or equal to all of the devices within a field of the interrogator. Devices receiving the first signal respectively determine if the respective device falls within the specified group and, if so, send a reply including a respective random value to the interrogator within a randomly selected time slot of a number of slots; and, if not, do not send a reply. The interrogator determines if a collision occurred between devices that sent a reply. The interrogator also creates a new, different specified group.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: July 20, 2010
    Assignee: Keystone Technology Solutions, LLC
    Inventor: Clifton W. Wood, Jr.
  • Patent number: 7606207
    Abstract: A wireless transmit receive unit (WTRU) recovers data from a plurality of data signals received as a received vector. The WTRU determines data of the received vector by determining a Cholesky factor of an N by N matrix and using the determined Cholesky factor in forward and backward substitution to determine data of the received data signals. The WTRU comprises an array of at most N scalar processing elements. The array has input for receiving elements from the N by N matrix and the received vector. Each scalar processing element is used in determining the Cholesky factor and performs forward and backward substitution. The array outputs data of the received vector.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: October 20, 2009
    Assignee: InterDigital Technology Corporation
    Inventors: Peter E. Becker, Stephan S. Supplee
  • Patent number: 7596110
    Abstract: A router providing selective routing depending on traffic direction. The router includes two IP interfaces, where each IP interface is associated with a respective virtual private network. The router uses two forwarding tables. The first forwarding table routes traffic towards a first IP interface and a second forwarding table is capable of simultaneously routing traffic in the opposite direction, away from the first IP interface. The first IP interface is coupled to a first tunnel which provides bi-directional connectivity to mobile stations. The second IP interface is coupled to a second tunnel providing bi-directional connectivity to a corporate network. The router also includes a third interface which provides bi-directional connectivity to mobile stations. The router routes traffic through the second interface in the event that a mobile station on one interface is communicating with a mobile station on the third interface.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: September 29, 2009
    Assignee: Telefonaktiebolaget L M Ericsson (PUBL)
    Inventors: Jan Backman, Krister Norlund, Anders Engstrom, Linus Magnusson, Johan Kopman
  • Patent number: 7586844
    Abstract: Virtual circuits are dynamically established in a telecommunications network. A cache duration is adaptively determined based on at least one characteristic of the telecommunications network. A virtual circuit is established for a connection between a source and a destination. The virtual circuit is cached when the connection between the source and the destination terminates. The cached virtual circuit is reused when a new connection request occurs during the cache duration. The cached virtual circuit is released after the cache duration when no new connection request occurs during the cache duration.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: September 8, 2009
    Assignee: AT&T Labs, Inc.
    Inventors: Yetik Serbest, Haifeng Bi, Samuel Sigarto
  • Patent number: 7586906
    Abstract: A hybrid type telephony system capable of establishing a connection between conventional type telephone sets contained in an exchange unit and LAN type telephone sets contained in an IP network, the system comprising: a gateway circuit connected between the exchange unit and the IP network and performing voice data format conversion, and a central control unit connected to the LAN of the IP network for establishing a communication path to the exchange unit via a control bus, controlling switching of IP packets of the IP network, managing IP address information of the LAN type telephone sets and the gateway circuit via the LAN, and controlling connection between the LAN type telephone sets and connection between the LAN type telephone sets and the gateway circuit.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: September 8, 2009
    Assignee: Juniper Networks, Inc.
    Inventor: Takuji Tanimura
  • Patent number: 7580389
    Abstract: A first communication device (e.g., the communication device that is sending data) monitors a radio channel in a predetermined set of radio channels. A message is transmitted on the first radio channel if the first radio channel is unoccupied. A second radio channel from the predetermined set of channels is checked if the first radio channel is occupied. The message is sent on the second radio channel if the second radio channel is unoccupied and the message was not sent on the first radio channel. In one embodiment, the transmission is sent in predetermined limited time blocks and predetermined set of channels is limited to a particular number of channels. In one embodiment a channel occupancy map and channel selection algorithm are utilized to establish the predetermined set of channels.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: August 25, 2009
    Assignee: Trimble Navigation Limited
    Inventors: Geoffrey Kirk, James M. Janky, Arthur E. Anderson
  • Patent number: 7573879
    Abstract: Embodiments are generally direct to a method and apparatus for generating a header in a communication network. In one embodiment, receiving at a node on a first communication link a protocol data unit (PDU), generating a header that is non-specific to a particular communication protocol associated with the PDU when received at the node, the header to facilitate encapsulation and transportation of the PDU through a second communication link to deliver the PDU to a memory-based service interface of another node on the second communication link.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: August 11, 2009
    Assignee: Intel Corporation
    Inventors: Charles Narad, Joseph Bennett
  • Patent number: 7570582
    Abstract: A method and system for determining route redistribution are disclosed. The method generally comprises receiving an information packet from a neighbor source. The information packet identifies the source as a stub router and specifies route types that the source will advertise. Upon receiving notice of a failed link within the network, query packets are sent only to neighboring devices that have not been identified as stub routers to request route information.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: August 4, 2009
    Assignee: Cisco Technology, Inc.
    Inventor: Donnie V. Savage
  • Patent number: 7570607
    Abstract: Video, voice and data are integrated using existing telephone connections by using a video network server to receive and transmit video signals to and from clients using telephone wires. Client frequency division multiplexing couplers, each associated with one of the clients, receive video and telephone signals from the client and frequency multiplex them onto the telephone wires for transmission. They also receive video signals from the server and frequency demultiplex them for transmission to the client. A video frequency division multiplexing coupler connected between the video network server and each of the client frequency division multiplexing couplers receive the video and telephone signals from the clients and transmit only the video signals to the video network server.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: August 4, 2009
    Assignee: Intel Corporation
    Inventors: David B. Andersen, David B. Johnson, Vittal Kini
  • Patent number: 7567579
    Abstract: A power over Ethernet controller comprising: a control circuitry; at least one powering port, each of the at least one powering port comprising a unique means for controlling a switch associated therewith; and at least one current limiter, each of the at least one current limiter being associated with a unique one of the at least one powering port, each of the at least one current limiter being operable to limit the current through the controlled switch to a particular one of a plurality of values, each of the values being in excess of 100 mA, the particular value being selected responsive to the control circuitry.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: July 28, 2009
    Assignee: Microsemi Corp.-Analog Mixed Signal Group Ltd.
    Inventors: Dror Korcharz, Shimon Cohen, Alon Ferentz, Nadav Barnea, Eli Ohana
  • Patent number: 7561538
    Abstract: Speech telephones are incorporated in a LAN, and, for example, when a voice telephone 5 communicates with another voice telephone 8, call control is performed through exchange of information between a PC 1 and a PC 4, juxtaposed with the voice telephones, respectively, via a LAN hub 10, a LAN switching unit 50, and a LAN hub 20. Speech data of the respective telephones 5, and 8 are packetized in the data block of a MAC frame by concentrators 30, and 40 for voice telephones, respectively, and relayed to LAN-SW interfaces 30a, and 40a. Frames having a function of absorbing fluctuation are applied to the data block of the interfaces 30a and 40a. Respective voice data packetized according to the MAC address of the MAC frame are delivered to the voice telephones 5, and 8, respectively, via the LAN switching unit 50, and the concentrators 30, and 40 for voice telephones.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: July 14, 2009
    Assignee: Oki Electronic Industry Co. Ltd.
    Inventors: Shinji Usuba, Tomokazu Konishi, Yoshinori Sekine
  • Patent number: 7558197
    Abstract: A system provides congestion control in a network device. The system includes multiple queues, a dequeue engine, a drop engine, and an arbiter. The queues temporarily store data. The dequeue engine selects a first one of the queues and dequeues data from the first queue. The drop engine selects a second one of the queues to examine and selectively drop data from the second queue. The arbiter controls selection of the queues by the dequeue engine and the drop engine.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: July 7, 2009
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Debashis Basu, Jayabharat Boddu, Avanindra Godbole
  • Patent number: 7554909
    Abstract: A system, apparatus, method and article to perform dynamic service management for multicore processors are described. The apparatus may include, for example, a processing device having multiple types of processors to process packets. A service manager may dynamically assign executable files for multiple services to the multiple types of processors during execution of the executable files based on packets processed for each service. Other embodiments are described and claimed.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: June 30, 2009
    Assignee: Intel Corporation
    Inventors: Arun Raghunath, Erik J. Johnson
  • Patent number: 7554932
    Abstract: A wireless communications network which provides directed transmissions between components of the network is provided. The components within the wireless communications include a master apparatus, a plurality of remote devices, and a plurality of repeaters. The components within the wireless communications network communicate using messages which have a control field and at least one information field. Information within the control field is used by components to make determinations for retransmitting the message, or transmitting a predefined response to the message, such as a signal strength response. The components within the network use the messages to make a determination of a communications target, which may be used as a primary contact for transmitting information, automatically, and may repeat the determination at predetermined intervals.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: June 30, 2009
    Assignee: Inovonics Corporation
    Inventors: Neal Shurmantine, Daryl Burkhard, Steven T. Dunbar, Donald J. Hume, Nathan Koonce, Steve Koonce, Preston Pierce
  • Patent number: 7548524
    Abstract: A mobile terminal MN1 according to the present invention judges, based on a router advertisement transmitted from an access router AR1, whether handover is to be executed between access points (APs) connected to the access router AR1, and transmits a link moving notification, which indicates that handover is executed under control of the access router AR1, to the access router AR1. Further, the access router AR1 updates only routing information based on the received link moving notification.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: June 16, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Takayuki Ohbayashi, Takatoshi Okagawa, Katsutoshi Nishida
  • Patent number: 7545740
    Abstract: A method for communication includes coupling a network node to one or more interface modules using a first group of first physical links arranged in parallel. Each of the one or more interface modules is coupled to a communication network using a second group of second physical links arranged in parallel. A data frame having frame attributes sent between the communication network and the network node is received. A first physical link out of the first group and a second physical link out of the second group are selected in a single computation based on at least one of the frame attributes. The data frame is sent over the selected first and second physical links. This method allows two or more link aggregation groups to be concatenated, using a single processing stage to determine port assignment for each frame in each of the link aggregation groups.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: June 9, 2009
    Assignee: Corrigent Systems Ltd.
    Inventors: David Zelig, Ronen Solomon, Uzi Khill
  • Patent number: 7546570
    Abstract: A communications bus enables communication of data signals in a parallel processing system having a plurality of substantially identical cells, each cell having an access point for transmitting data signals into the communications bus. The communications bus includes a plurality of parallel channels, and at least one channel crossover point associated with each cell. Each crossover point implements a regular change in a channel order of the communications bus, such that each access point is coupled to a channel of the communications bus. Propagation delays are reduced by inserting buffers at regular intervals along the length of each channel. An output buffer at a downstream boundary of each power domain of the system prevents undesired currents due to voltage mismatch. The propagation direction of data signals away from the access point, and propagation of data to an adjacent downstream cell can be controlled to reduce bus traffic and power consumption.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: June 9, 2009
    Assignee: Hyperchip Inc.
    Inventors: Richard S. Norman, Yves Blaquiere, Yvon Savaria
  • Patent number: 7542418
    Abstract: A method and system for detecting orphaned CLS primitives in a fibre channel network having a fibre channel switch element coupled to an arbitrated loop is provided. The method includes, sending an OPN primitive to a switch element pore's own AL_PA to open a connection with itself; and determining if a CLS primitive is received within a loop a latency period. If a CLS primitive is received within the latency period then the CLS primitive is classified as an orphan and the orphaned CLS primitive is removed by the switch element by enabling a firmware based removal feature. The switch element includes a port that arbitrates for the arbitrated loop ownership and sends an OPN primitive to its own AL_PA.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: June 2, 2009
    Assignee: QLOGIC, Corporation
    Inventors: John M Fike, William J. Wen
  • Patent number: 7535837
    Abstract: A burst mode optical signal is transported as payload of a framed continuous bit-stream optical signal through an optical transport network. The optical bursts are all generated at a common nominal bitrate which equals substantially the payload bitrate of the continuous bit-stream optical signal. The bursts are converted into a continuous bit stream by filling gaps between the bursts with a predefined pattern. The continuous bit stream thus created is then mapped into frames to generate the framed continuous bit-stream optical signal for transmission.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: May 19, 2009
    Assignee: ALCATEL
    Inventors: Michael Joachim Wolf, Dieter Beller
  • Patent number: RE41024
    Abstract: The present invention provides for a system This document describes embodiments for communicating with a host using a global address and a local address. The present invention allows These embodiments allow for the communication to be initiated by an entity outside the host's network. The entity initiating the communication resolves the destination host's domain name into a global address and a local address. Messages are sent to the destination host using both the global address and the local address. In one embodiment, both the global and local address are included in the message by encapsulating IP packets. Some embodiments of the present invention also use pseudo addressing.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: December 1, 2009
    Inventors: Hasan Alkhatib, Fouad Tobagi, Bruce C Wootton