Patents by Inventor Douglas Charles Hague

Douglas Charles Hague 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).

  • Identification of polarization-mode dispersion on a communication network
    Patent number: 7221871
    Abstract: A monitoring system is described that is comprised of a processing system and a database system. The database system is configured to store identities for a plurality of channels in the communication network. The processing system identifies an error on a first channel of the plurality of channels. The processing system identifies a second channel of the plurality of channels that is adjacent to the first channel based on the database system and determines if an error occurs on the second channel. The processing system identifies a third channel of the plurality of channels based on database system and determines if an error occurs on the third channel. The processing system identifies polarization-mode dispersion based on determining the error occurs on the second channel and determining the error does not occur on the third channel.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: May 22, 2007
    Assignee: Sprint Communications Company L.P.
    Inventors: Douglas Lew Richards, Christopher Thomas Allen, Douglas Charles Hague, Mark Loyd Jones