Patents Examined by Ron Abelson
  • Patent number: 7298755
    Abstract: An apparatus for communicating with a network comprises a data packet pipeline and a monitoring element. The data packet pipeline is configured to transfer data between a buffer and a network socket. The monitoring element is configured to provide an indication of an operational performance parameter for at least one component of the data packet pipeline thereby enabling an operational problem within the pipeline may be isolated based on the indication.
    Type: Grant
    Filed: February 8, 2003
    Date of Patent: November 20, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey Joel Walls, Michael T Hamilton
  • Patent number: 7068677
    Abstract: A subscriber radio access system in which it becomes possible to facilitate communications for realizing high throughput and by which a radio LAN communication can be realized even if a radio link section is longer according to the CSMA protocol on Ethernet is provided. The subscriber radio access system includes plural transceiver terminals; and a base station linked to each of the plural transceiver terminals via a radio communication channel, wherein one of the plural transceiver terminals communicates to the other transceiver terminal with an Ethernet packet employing a carrier sense multiple access (CSMA) protocol, of which a packet length is corrected to correspond to a transmission delay time between the one and other transceiver.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: June 27, 2006
    Assignee: Fujitsu Limited
    Inventors: Koji Arai, Gen Nakagawa, Kenichi Aoki
  • Patent number: 6876677
    Abstract: A first ATM multiplexing node is connected to a second ATM multiplexing node via an ATM network. A number of calls detecting unit detects the number of voice calls set up on the transmission path that connects the first ATM multiplexing node to the second ATM multiplexing node. A signal VC capturing unit captures signal VCs in accordance with the additional number of voice calls detected by the number of calls detecting unit. A signal VC releasing unit releases signal VCs in accordance with the decrease in the number of calls detected by the number of calls detecting unit.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: April 5, 2005
    Assignee: Fujitsu Limited
    Inventor: Yukio Kise
  • Patent number: 6829242
    Abstract: A method and apparatus associates a domain name of a home gateway with one or more PVCs. After the PVC is established, a tunneling protocol is used to request the domain name of the home gateway, and the domain name is associated with the PVC. When a user logs on via an access communication device, the user will provide a domain name of a home gateway with which the user desires to communicate. A PVC associated with the home gateway is then used to allow the user to communicate with the home gateway. The domain name of the home gateway may be periodically verified to detect any changes.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: December 7, 2004
    Assignee: Cisco Technology, Inc.
    Inventors: Michael Davison, Rene Tio, David Langley
  • Patent number: 6765889
    Abstract: Communication method and system for transmitting data partitioned into a plurality of data packets between at least two communication units (CU1, CU2, CU4) using a communication network (N). During temporary interruptions of transmission of data packets via the communication network some of the transmitted data packets are lost. The invention allows to avoid the loss of data packets due to temporary interruptions of the communication network by determining at the sending data processing device, based on information received from the communication network, which data packets are lost or will be lost during transmission due to a temporary interruption of the communication network. The method can be used for data transmission via mobile communication networks and an “Internet”. To allow a retrieval of lost data packets, data packets scheduled for transmission can be temporarily stored in a temporary storage devices.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: July 20, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Reiner Ludwig
  • Patent number: 6738383
    Abstract: The present invention relates to an arrangement for distributing and dispatching traffic in a network, especially H.323 generated traffic, which arrangement comprises one or more gatekeepers, here designated as so-called external or real gatekeepers, and for the purpose of utilizing such real gatekeepers in a far more efficient and cost saving manner, and also for avoiding reconfiguration of endpoints depending on which gatekeepers with which they want to communicate, the present invention suggests a solution characterized by the introduction of one or more internal gatekeepers, here also designated as so-called internal lightweight gatekeepers, each such internal gatekeeper basically understanding any message used by any endpoint when registering to a real gatekeeper.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: May 18, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kevin Kliland, Espen Skjæran, Knut Snorre Bach Corneliussen, Espen Iveland
  • Patent number: 6717949
    Abstract: An address management system and method. ADDRESS statements and HIDE rule statements are processed to generate a file of masquerade rules for associating subsets of internal addresses among a plurality of public addresses. Responsive to these masquerade rules, network address translation is performed for incoming and outgoing IP datagrams. IP Network Address Translation (NAT) and IP Filtering functions provide firewall-type capability to a gateway system, such as the IBM AS/400 system. A customer's system administrator specifies specific NAT and Filtering rules (via the AS/400 Operational Navigator GUI). A type of NAT, called masquerade NAT, defines a many-to-one mapping in such a way as to allow the ‘many’ to specify subsets of IP addresses. This allows traffic separation, which improves throughput to and from external networks (e.g. the Internet), and also improves flexibility in IP address management.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: April 6, 2004
    Assignee: International Business Machines Corporation
    Inventors: Edward B. Boden, Wesley A. Brzozowski, Franklin A. Gruber, Donald A. Palermo, Michael D. Williams
  • Patent number: 6711176
    Abstract: The method for converting cell-based ATM traffic to frame-based ATM traffic comprises assembling a group of one or more cells of a input cell stream which corresponds to an AAL5 PDU; extracting a user data payload of the AAL5 PDU, exclusive of any padding; constructing a frame-based ATM adaptation layer protocol data unit (FB-AAL PDU) having no padding using the AAL5 PDU payload; and segmenting the FB-AAL PDU into one or more frames to generate an output frame stream. The method provides an increase in bandwidth efficiency since the padding overhead required by AAL5 PDUs is eliminated when transferring data to, over or across a frame-based ATM network.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: March 23, 2004
    Assignee: Alcatel Canada Inc.
    Inventor: Hossain Pezeshki-Esfahani
  • Patent number: 6683869
    Abstract: A system and method for moving voice telephone calls through a data network. More particularly, the system and method are directed to the efficient operation of a novel port card for installation in present and future versions of data switches. Together port cards and data switches form nodes. The port card receives and transmits out signals through respective ports connected to links between nodes. The method provides for voice data to be switched in a Ds0 switching matrix, which is resident on the port card.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: January 27, 2004
    Assignee: WorldCom, Inc.
    Inventor: Forrest L. Pierson, Jr.
  • Patent number: 6678271
    Abstract: An apparatus and method for providing a translation layer between a local bus and a global bus is described. The apparatus has a local bus and a global bus respectively coupled to a local bus gateway and a global bus gateway. A storage unit is coupled to both of the gateways, the storage unit having a traffic unit. Traffic control logic is coupled to at least one of the gateways and to at least one traffic statistic register.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: January 13, 2004
    Assignee: Nortel Networks Limited
    Inventor: Jack Flinsbaugh
  • Patent number: 6674750
    Abstract: A method and apparatus for communicating both packet data and time division multiplexed (TDM) transmissions over a shared bus. An apparatus is providing having a shared data communication bus and first and second control signals. The first control signal indicates the transmission of time division multiplexed data on the shared data communication bus, while the second control signal indicates the transmission of packet data on the shared data communication bus. A plurality of packet modules are provided, wherein each packet module is responsive to the state of the first and second control signals, and each packet module is further configured to transmit and receive data across the shared data communication bus. A plurality of synchronous interfacemodules are further provided, wherein each synchronous interface module is configured to transmit and receive data across the shared data communication bus.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: January 6, 2004
    Assignee: Paradyne Corporation
    Inventor: Robert Castellano
  • Patent number: 6654356
    Abstract: A distributed system with an architecture based on synchronized clocks that provides accurate coordination of control functions. The distributed system includes a set of nodes coupled to a communication link. Each node has a clock which holds a real-world time. The nodes participate in a synchronization protocol on the communication link for synchronizing the real-world time in each clock. The architecture of the distributed system is such that the synchronization of control functionality in the distributed system is based upon the real-world time in the clocks. A variety of examples of applications for this architecture are set forth.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: November 25, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: John C. Eidson, Jogesh Warrior, Hans J. Sitte
  • Patent number: 6549516
    Abstract: A system and method are described for providing instructions for forwarding packets. The method includes broadcasting a general instruction specifying a plurality of flows to a plurality of forwarding agents and receiving at a service manager a first message responsive to the general instruction indicating that a packet for a specific flow has been received by a specific forwarding agent. A specific instruction is generated at the service manager for handling the specific flow and the specific instruction for handling the specific flow is sent to the specific forwarding agent.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: April 15, 2003
    Assignee: Cisco Technology, Inc.
    Inventors: Mark Albert, Richard A. Howes, James A. Jordan, Edward A. Kersey, Louis F. Menditto, Chris O'Rourke, Pranav Kumar Tiwari, Tzu-Ming Tsang
  • Patent number: 6515960
    Abstract: A radio communication system is formed of a plurality of radio communication terminals and a radio communication control terminal for controlling radio communication. Data communication is performed between each radio communication terminal and the radio communication control terminal by the orthogonal frequency division multiplexing (OFDM) method. Data is multiplexed with a frame structure having the specified number of symbols by the TDMA method. The radio communication control terminal transmits a synchronization acquisition code to the plurality of radio communication terminals in each frame. Each radio communication terminal receives the synchronization acquisition code, sets a timer according to the receiving timing of the synchronization acquisition code, and sets the transmission timing and the receiving timing with the timer being used as the reference. With the use of the OFDM method, demodulation is performed without an error even if jitter occurs.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: February 4, 2003
    Assignee: Sony Corporation
    Inventors: Takashi Usui, Hisaki Hiraiwa, Takehiro Sugita
  • Patent number: 6510147
    Abstract: A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relatively wideband signals. The electromagnetic spectrum available to the plurality of narrow-band signals is selectively shared with the electromagnetic spectrum available to the wideband signals by systematically separating the orthogonal codes and the carrier frequencies used for transmission. The prefixes of the orthogonal codes are preferably mutually exclusive and the carrier frequencies are preferably separated by an offset. The offset may be substantially equal to an integer multiple of the narrow-band signal's chip rate. Alternatively, the offset may be substantially equal to an odd multiple of one half the narrow-band signal's chip rate in which case every other bit of the orthogonally encoded data is inverted.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: January 21, 2003
    Assignee: Hughes Electronics Corporation
    Inventors: Feng-Wen Sun, Lin-Nan Lee, Khalid Karimullah
  • Patent number: 6507592
    Abstract: The present invention provides an apparatus and a method which facilitate a flexible management of data packets in a Time Division Multiplexed System for data communication. The present invention also provides an apparatus which can rapidly be adapted to evolving communication protocols, and as such provide short time-to-markets for new and/or enhanced apparatuses. Consequently, the present invention is capable of rapidly providing comparable e.g. cable modem to the market in response to revisions of existing communication protocols and to development of new communication protocols.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: January 14, 2003
    Assignee: Cisco Cable Products and Solutions A/S (AV)
    Inventors: Hans Hurvig, Henrik Hvidtfeldt
  • Patent number: 6507571
    Abstract: A receiving apparatus is used in a mobile communication system transmits and receives spread spectrum signals between a base station and a mobile station, in which the timing detection region of a spread spectrum signal is set in accordance with the intermittent receiving period. If it is difficult for the mobile station to establish synchronization with the base station over a long intermittent receiving period due to errors accumulated in the oscillator of the mobile station, the window serving as the search area is expanded. Accordingly, the capability of detecting the timing is increased, and errors of the oscillator are compensated. Thus a, re-synchronizing operation and intermittent receiving operation are reliably performed. As a consequence, even by the use of a low-precision and simple-structured oscillator in the mobile station, a low-powered receiving apparatus in which an intermittent receiving operation having a longer period is provided.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: January 14, 2003
    Assignee: Sony Corporation
    Inventor: Katsuya Yamamoto
  • Patent number: 6498785
    Abstract: A method and apparatus for power control on a first channel that is shared by multiple mobile stations transmitting to base stations in a telecommunication system. An initial mobile station transmission power level is set on the first channel that is shared in the random access mode. The transmission power level may be determined based on a desired performance level of the first channel. The method and system may be efficiently applied on a channel that carries a transmission in one or more bursts, with each burst including the same or a varying number of frames of varying sizes. The method and apparatus utilizes a second channel that is shared by multiple mobile stations for transmitting the power control signaling from the base stations to the mobile stations.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: December 24, 2002
    Assignee: Nokia Mobile Phones Ltd
    Inventors: Roy Thomas Derryberry, Steven D. Gray, Zhigang Rong
  • Patent number: 6493359
    Abstract: The invention provides an apparatus, and related method, for providing a reconfigurable frame counter that can accommodate differing start of frame pulse locations in a synchronous communication system. The frame counter may be integrated with existing devices thus providing a cost effective advance in the functionality of existing communication devices. The reconfigurable frame counter includes a multiplexer, a byte processor and a frame counter. The multiplexer byte interleave multiplexes a plurality of lower data rate SONET signals to generate a higher data rate SONET signal of framed data bytes. The byte processor processes transport overhead bytes of the higher data rate SONET signal in accordance with a frame byte count value. The frame byte counter counts clock pulses that are each associated with the arrival of a framed data byte and generates a frame byte count value that corresponds to a frame byte location of the currently received framed data byte.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: December 10, 2002
    Assignee: Applied Micro Circuits Corporation
    Inventors: Alan M. Sorgi, Scott A. Applebaum
  • Patent number: 6490284
    Abstract: In an asynchronous transfer mode (ATM) based transmission network, call control signaling information associated with a first telecommunications signaling protocol, such as an N-ISDN system 7 signaling protocol, is bound to bearer control signaling information associated with a Q.aal2 signaling protocol, where both call control signaling information and bearer control signaling information are required to set-up and maintain an ATM network connection. Binding the call control signaling information and the bearer control signaling information is accomplished as a function of the circuit identification code associated with the call control signaling information, where the circuit identification code is transferred from the N-ISDN system 7 signaling protocol to the Q.aal2 signaling protocol.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: December 3, 2002
    Assignee: Telefonaktiebolaget LM Ericcson
    Inventor: Leslie G. Graf