Patents Assigned to Nortel Networks Corporation
  • Patent number: 7933883
    Abstract: This invention relates to an advertisement machine which provides advertisements to a user searching for desired information within a data network. The machine receives, from a user, a search request including a search argument corresponding to the desired information and searches, based upon the received search argument, a first database having data network related information to generate search results. It also correlating the received search argument to a particular advertisement in a second database having advertisement related information. The search results together with the particular advertisement are provided by the machine to the user.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: April 26, 2011
    Assignee: Nortel Networks Corporation
    Inventors: Richard Prescott Skillen, Frederick Caldwell Livermore
  • Patent number: 7895178
    Abstract: This invention relates to an advertisement machine which provides advertisements to a user searching for desired information within a data network. The machine receives, from a user, a search request including a search argument corresponding to the desired information and searches, based upon the received search argument, a first database having data network related information to generate search results. It also correlating the received search argument to a particular advertisement in a second database having advertisement related information. The search results together with the particular advertisement are provided by the machine to the user.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: February 22, 2011
    Assignee: Nortel Networks Corporation
    Inventors: Richard Prescott Skillen, Frederick Caldwell Livermore
  • Patent number: 7895183
    Abstract: This invention relates to an advertisement machine which provides advertisements to a user searching for desired information within a data network. The machine receives, from a user, a search request including a search argument corresponding to the desired information and searches, based upon the received search argument, a first database having data network related information to generate search results. It also correlating the received search argument to a particular advertisement in a second database having advertisement related information. The search results together with the particular advertisement are provided by the machine to the user.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: February 22, 2011
    Assignee: Nortel Networks Corporation
    Inventors: Richard Prescott Skillen, Frederick Caldwell Livermore
  • Patent number: 7831689
    Abstract: A system and method for managing a virtual private network. The system and method include a graphical user interface. The graphical user interface is configured to display at least one link for accessing, via the interne, a web-page associated with a switch offering virtual private network functions.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: November 9, 2010
    Assignee: Nortel Networks Corporation
    Inventors: Matthew W. Poisson, Melissa L. Desroches, James M. Milillo
  • Publication number: 20100228879
    Abstract: A Multicast-Enabled Address Resolution Protocol (ME-ARP) is disclosed. This ME-ARP allows the building of independent IP based Virtual Private LAN segments (VPLS) over a multicast enabled IP backbone using stateless tunnels and optimal VPLS traffic forwarding. Each VPLS has an associated IP subnet which is completely independent from other VPLS or the underlying IP backbone itself. Each Customer Premises Equipment (CPE) device needs only to be configured with a VPLS identifier and its serving IP subnet per VPLS designated interface.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 9, 2010
    Applicant: NORTEL NETWORKS CORPORATION
    Inventors: Marcel Wiget, Robert Pluim, Simon David Bryden, Geoffrey Mattson
  • Patent number: 7315951
    Abstract: A high speed non-volatile electronic memory configuration and method is disclosed. In one particular exemplary embodiment, the high speed non-volatile electronic memory configuration may be realized comprising a high speed volatile memory, a non-volatile memory coupled to the high speed volatile memory, a controller coupled to the high speed volatile memory and the non-volatile memory, and a power level detector that detects when power is above a particular minimum operating voltage level. The controller monitors data storage changes made within the high speed volatile memory and controls the transfer of stored data from the high speed volatile memory to the non-volatile memory, and vice-versa, when power is above the particular minimum operating voltage level.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: January 1, 2008
    Assignee: Nortel Networks Corporation
    Inventors: Paul Hanrieder, Marc L. Graves, Ken R. M. Hambly
  • Patent number: 7171686
    Abstract: A networked public multimedia kiosk based on a personal computer compares key codes resulting from user input with a table. If a key code, or key code sequence, matches an entry in the table, the user input is ignored. This restricts use of the computer by the public. Different levels of access to the computer may be provided by modifying the table through a password controlled security program. For enhanced security, gamma tables (which control the brightness of the screen output) may be set to zero while the operating system of the computer is loading.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: January 30, 2007
    Assignee: Nortel Networks Corporation
    Inventors: Bernie G. Jansen, Colin A. Foster
  • Patent number: 6999445
    Abstract: A multiple access telecommunication system is provided, which makes use of chaotic signals. Each transmitter has a chaotic system, which has at least one strange attractor in its phase space, and each receiver has chaotic systems, which corresponds to those in the transmitters from which it may receive signals. Each pair of users is assigned a set of periodic unstable orbits from a strange attractor, which that pair of users may use for signalling. At the transmitter side, a multiplexer receives data from plurality of users. These data are multiplexed in time, to produce an asynchronous data stream. The data stream is then mapped to a sequence of chaotic signals, in accordance with the set of trajectories for each transmitter and receiver pair.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: February 14, 2006
    Assignee: Nortel Networks Corporation
    Inventors: Alexander Sergeevich Dmitriev, Sergey Olegovich Starkov, Maxim Evgenyevich Shirokov, Andrey Ivanovich Panas, Yong Li, Wen Tong, Rui R. Wang
  • Patent number: 6898419
    Abstract: Remotely controllable actuators are provided to alter the cavity size of bandpass cavity filters to alter the bandpass characteristics. In one embodiment, a stepper motor is used to provide lateral movement of a tuning plate to alter the size of the cavity. The neck of the cavity is also changed in length through the use of a tuning motor. A feedback loop is used to provide fine tuning of the length of the neck in response to changes due to temperature and vibration to offer maximum propagation of the signal to be transmitted. A coupling tuner is used to adjust to the resulting change in Q to the cavity. A tuning processor is used to receive signals from a remote location identifying the desired characteristics of the filter.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 24, 2005
    Assignee: Nortel Networks Corporation
    Inventors: Eric S. Fayeski, Brad W. Carlson
  • Publication number: 20040198268
    Abstract: A bank of complex gain elements is used to provide a step-wise approximation of an arbitrary complex-gain predistortion function for a nonlinear transmitter. The bank of gain elements is in an adaptive loop realizing adaptive control. The adaptive loop is closed between an Input of the gain bank and an output of the transmitter through a linear receiver at an adaptive controller composed of a bank of proportional-integral (PI) controllers. The real and imaginary parts of each predistortion gain element are controlled by a corresponding adaptive PI controller. The signals processed by the adaptive controller are represented in orthogonal coordinates in terms of real and imaginary number pairs of complex numbers. The adaptive controller achieves unconditionally stable operation independently from the arbitrary phase rotation in the input signal or the adaptive loop.
    Type: Application
    Filed: December 16, 2002
    Publication date: October 7, 2004
    Applicant: Nortel Networks Corporation
    Inventors: Peter Zahariev Rashev, David M. Tholl, Christopher John Leskiw
  • Patent number: 6779051
    Abstract: An end point address of a generic routing encapsulation (GRE) tunnel is obtained by forwarding a data packet through the GRE tunnel to devices at a multicast address. The data packet includes a logical address of a GRE tunnel end point device. A reply to the data packet is received from a remote GRE tunnel end point device. The reply includes a physical address of the remote GRE tunnel end point device.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: August 17, 2004
    Assignee: Nortel Networks Corporation
    Inventors: Nipun Basil, Ayikudy Srikanth, Tom Meehan
  • Patent number: 6775479
    Abstract: A communications network has a plurality of nodes interconnected by an optical transmission medium. The transmission medium is capable of a carrying a plurality of wavelengths organized into bands. A filter at each node for drops a band associated therewith and passively forwards other bands through the transmission medium. A device is provided at each node for adding a band to the transmission medium. Communication can be established directly between a pair of nodes in the network sharing a common band without the active intervention of any intervening node. This allows the network to be protocol independent. Also, the low losses incurred by the passive filters permit relatively long path lengths without optical amplification.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: August 10, 2004
    Assignee: Nortel Networks Corporation
    Inventors: David Milton, Tomas Valis, Gino Totti, Kexing Liu, Michel Pigeon
  • Publication number: 20040121741
    Abstract: An adaptive controller for linearization of transmitters using predistortion of the input signal has reduced sensitivity to impairments such as gain variation, phase noise or modulation/demodulation frequency instability by linearizing an adaptively normalized gain provided through a separate estimation and cancellation of linear gain variations. Values of a nonlinear and a linear gain blocks, cascaded with the linearized transmitter and called respectively a predistortion block and a gain regulation block, are independently adjusted by two different adaptive controllers. In one embodiment, four banks of real gain elements compose the predistortion block and realize an arbitrary step-wise approximation of a generalized 2×2 transmit gain matrix of nonlinear functions. In a further embodiment cancellation of a DC level bias multi-channel impairment is provided by an adaptively adjusted signal adder inserted in the transmit chain between the predistortion block and the linearized transmitter.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 24, 2004
    Applicant: Nortel Networks Corporation
    Inventors: Peter Zahariev Rashev, David M. Tholl
  • Patent number: 6717944
    Abstract: A system, device, and method for allocating virtual circuits in a communication network allocates a virtual circuit for a particular device, establishes a tunnel for communicating with a second device, and maps the virtual circuit to the tunnel based upon an address resolution request received over either the virtual circuit or the tunnel. Protocol messages received over the virtual circuit are forwarded over the corresponding tunnel. Protocol messages received over the tunnal are forwarded over the corresponding virtual circuit.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: April 6, 2004
    Assignee: Nortel Networks Corporation
    Inventors: Simon Bryden, Robert Pluim, Marcel Wiget, Geoffrey A. Mattson
  • Patent number: 6701366
    Abstract: A communication system includes packet-based networks that are coupled to terminals capable of participating in telephony sessions. To implement telephony services in such sessions, a telephony scripting language (TSL) is defined. Script modules may be created using TSL. Each script module may include a state machine having a plurality of states. TSL defines triggers that cause the state machine in an executed script module to transition between the states. In addition, TSL also defines actions that are specified in the several states or in transitions between states. The actions represent telephony services that may be performed by nodes coupled to the networks. Each action may be converted to one or more calls to functions or routines provided by application programming interfaces (APIs) residing in the network nodes.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: March 2, 2004
    Assignee: Nortel Networks Corporation
    Inventors: Michel Kallas, James Michael Lyell, Gibson D. Ritenour
  • Publication number: 20040025066
    Abstract: An apparatus provides power to a device over a network transmission medium. The apparatus includes a controller which determines if the device can accept power over the network transmission medium, and which outputs a signal if the device can accept power over the network transmission medium. A circuit provides power to the device over the network transmission medium in response to the signal.
    Type: Application
    Filed: April 8, 2003
    Publication date: February 5, 2004
    Applicant: Nortel Networks Corporation, a Canadian corporation
    Inventors: Stephen S. Jackson, Jennifer G. Rasimas
  • Patent number: 6680849
    Abstract: An enclosed electronic component is provided by extruding first and second heatsink members having a plurality of cooling structures disposed on first surfaces thereof and an electronic component board between the first and second heatsinks, with a pair of joining members and conductive gaskets to form an electromagnetically sealed enclosure and a thermal pathway to remove heat from the electronic component.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: January 20, 2004
    Assignee: Nortel Networks Corporation
    Inventors: John C. Atkinson, Simon E. Shearman
  • Publication number: 20030200341
    Abstract: A method of processing a frame received at a networked device having a port switch and a general-purpose processor. The method can include receiving frame information at the port switch, determining at least one port for the frame, and directing the received frame information based on the determined port(s).
    Type: Application
    Filed: June 3, 2003
    Publication date: October 23, 2003
    Applicant: Nortel Networks Corporation, a Canadian corporation
    Inventors: John C. Lynch, Marc Saunders, Brian Pick
  • Patent number: 6625118
    Abstract: In a packet network, on receiving a packet a receiving host determines if the packet has been marked by any of the nodes through which it passed, to indicate congestion at that node, e.g. by checking the CE bit in an IP header. A packet flow control parameter is generated at the receiving side, and sent to the source using an Internet Protocol, as part of the packet acknowledgment, to control the flow of packets from the source, according to the packet flow control parameter. This can reduce control loop delays caused by waiting at the source for a number of acknowledgments to arrive before the congestion level can be calculated. Conditions at the receiver which may be different to those at the source can now be taken into account in the flow control.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: September 23, 2003
    Assignee: Nortel Networks Corporation
    Inventors: Jamal Hadi Salim, Biswajit Nandy, Nabil Seddigh, Joseph Fook-Kong Thoo
  • Publication number: 20030142625
    Abstract: A Monitor for the Control of Multimedia Services in Networks A method and system for reducing congestion of real time data traffic on a multimedia communications network having a traffic control mechanism. The method comprises of first extracting from data traffic in the multimedia communications network information regarding congestion of the multimedia communications network. This extraction is performed by a network of monitors. Secondly, congestion is regulated by a central server which receives network information from the monitors and utilizes the network information to analyze congestion status and communicate instructions to the multimedia communications network to reduce congestion.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 31, 2003
    Applicant: Nortel Networks Corporation
    Inventors: Guang Wan, Jonathan Weston-Dawkes