Patents by Inventor David Fredrickson

David Fredrickson 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).

  • Publication number: 20070204309
    Abstract: When an optical network terminal (ONT) is rebooted, for example, after being upgraded, the ONT may be not be ranged and provisioned for some time. This may disrupt services, such as video services provided to a customer. As such, a method and corresponding apparatus of ensuring continuous receipt of video services based on certain conditions in a passive optical network (PON) are provided. The method may include detecting at a PON element a condition indicating a change of states in receipt of video services, starting a timing mechanism having a default value stored in the PON element, and enabling receipt of video services at the PON element for an amount of time defined by the default value. Receipt of video services is enabled by maintaining a configuration for video services previously provisioned and re-provisioning the PON element with the maintained configuration. In this way, disruption to video services is reduced.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 30, 2007
    Applicant: Tellabs Vienna, Inc.
    Inventors: Marc Bernard, David Fredrickson, Douglas Ortega, Charles Rothrauff, Thomas Conklin