Patents by Inventor Philip Edholm

Philip Edholm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7469293
    Abstract: The present invention allows a communication client to receive a session request from a sending communication client, wherein the session request includes additional information. The additional information is processed to determine an action to take in association with the communication session to be established with the communication client. The additional information may include context indicia, which may identify an association related to the subject matter of the session, or a specific instruction to take the action in association with the communication session.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: December 23, 2008
    Assignee: Nortel Networks Limited
    Inventors: John H. Yoakum, Philip Edholm
  • Publication number: 20050185602
    Abstract: The performance of a voice conference using a packet-based conference bridge can be improved with a number of modifications. In one modification, the conference bridge receives speech indication signals from the individual packet-based terminals within the voice conference, these speech indication signals then being used by the conference bridge to select the talkers within the voice conference. This removes the need for speech detection techniques within the conference bridge, hence decreasing the required processing power and the latency within the conference bridge. In another modification, the conference bridge sends addressing control signals to the individual packet-based terminals selected as talkers, these addressing control signals directing the terminals selected as talkers to directly transmit their voice data packets to the other terminals within the voice conference. This direct transmission of voice data packets can reduce transcoding and latency within the network.
    Type: Application
    Filed: April 25, 2005
    Publication date: August 25, 2005
    Inventors: Frederic Simard, David Cuddy, Philip Edholm
  • Publication number: 20050135354
    Abstract: When a damaged packet has been forwarded to or towards a destination terminal, a forwarding device or a destination terminal will determine if the packet is damaged, and if it is damaged, determine whether the content of the packet is time-sensitive. If the content is time-sensitive, the damage to the packet is assessed, and if possible, an attempt to repair the damage is made. Repair may include correcting the damaged data or packet, deciding to use the damaged data because the damage is minimal, or replacing all or a part of the damaged data with a normalized set of data. If repair is not possible and replacement of the damaged portion is not available or desirable, the packet is discarded.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: John Yoakum, Philip Edholm, Francois Audet
  • Publication number: 20050074002
    Abstract: The present invention facilitates the forwarding of damaged packets, when the packets are carrying a certain type of content such as streaming media or other time-sensitive information where data integrity is less important than timely delivery. Once a packet is received, a determination is made as to whether the packet has been damaged. If the packet is damaged, an attempt is made to determine the type of content being carried by the packet and then a decision is made as to whether to forward the packet toward its destination or discard the packet, based on the type of content and potentially the integrity of the packet. Once a damaged packet has been discovered and a decision has been made to route the packet toward the destination terminal, the packet may be forwarded along a normal path or sent over an alternative path that is better suited for handling damaged packets.
    Type: Application
    Filed: October 1, 2003
    Publication date: April 7, 2005
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: John Yoakum, Philip Edholm, Francois Audet
  • Patent number: 6157644
    Abstract: Methods and apparatus for accelerating a router in a communications network are described. In one embodiment, a router accelerator includes a forwarding table for associatively storing a destination address and a next hop address. If a destination address of a packet matches a destination address in the forwarding table, then logic forwards the packet to a next hop. A router may be coupled to at least one network port through the router accelerator. In another approach, the network includes at least one host and at least one router. The host has at least one routing table for associatively storing a second-level destination address, a second-level next hop address and a first-level next hop address. A router accelerator includes redirect logic for storing the second-level destination address in a second-level next hop address entry in the at least one host routing table. This causes the host to request a first-level next hop address corresponding to the second-level destination address.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: December 5, 2000
    Assignee: Northern Telecom Limited
    Inventors: Gregory M. Bernstein, Alan Chapman, Philip Edholm, Jeffrey T. Gullicksen, Kenneth Gullicksen