Patents by Inventor James E. Stephen

James E. Stephen 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).

  • Satellite positioning system receiver time determination in minimum satellite coverage
    Patent number: 7623066
    Abstract: A method in a satellite positioning system receiver, including acquiring (210) a set of satellite positioning system satellites, determining (220) satellite subset time based on over-determined position solutions for at least two different subsets of the satellites acquired, determining (230) satellite time from at least two satellite subset times, computing (250) a position solution based on the satellite time or a refined (240) satellite time.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: November 24, 2009
    Assignee: Motorola, Inc.
    Inventors: George J. Geier, Thomas M. King, James E. Stephen