Patents by Inventor Lamfung Wen

Lamfung Wen 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).

  • Cascading architecture for audio and video streams
    Patent number: 8650309
    Abstract: An approach to supplying a data stream, for e.g., an internet-based video conference, to multiple client devices in a network, including attempting, at a first client device, to join an Internet Protocol (IP) multicast session in a network in which the first client device is operating and, if unsuccessful to attempt to join a unicast transmission of the data stream from a network node other than the meeting server and that is in a same subnet as the first client device, and if the unicast join within the same subnet is unsuccessful, registering the first client device with the meeting server to obtain at least one candidate node from which to receive the data stream.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: February 11, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Henry Wang, Andrew Shen, Lamfung Wen, Wallice Wang
  • CASCADING ARCHITECTURE FOR AUDIO AND VIDEO STREAMS
    Publication number: 20130326070
    Abstract: An approach to supplying a data stream, for e.g., an internet-based video conference, to multiple client devices in a network, including attempting, at a first client device, to join an Internet Protocol (IP) multicast session in a network in which the first client device is operating and, if unsuccessful to attempt to join a unicast transmission of the data stream from a network node other than the meeting server and that is in a same subnet as the first client device, and if the unicast join within the same subnet is unsuccessful, registering the first client device with the meeting server to obtain at least one candidate node from which to receive the data stream.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 5, 2013
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Henry Wang, Andrew Shen, Lamfung Wen, Wallice Wang