Patents by Inventor John Spearman

John Spearman 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: 9131110
    Abstract: Disclosed are example embodiments of a method and system to reduce re-transmission requirements of a compress media transferring system implemented in a network where packet loss could be possible. An extended header for each transmitted packet can indicate the priority of the packet and endpoints can determine if a re-transmission of a missing packet is desired. Buffering of packets at different hops in a multi-hop system could allow for the retransmission request to be satisfied by a more recent hop than the original system transmitting the video packet. In one embodiment three levels of priority are established to achieve a reliable frame rate of 30 frames per second by compressing the first and second levels at 7.5 frames per second and a third level at 15 frames per second.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: September 8, 2015
    Assignee: Polycom, Inc.
    Inventors: Amir Yassur, David Bourgoyne, Avishay Halavy, John Spearman, Dmitry Veremeev, Xiaowei Wang