Patents by Inventor Issac N. Durboraw, III

Issac N. Durboraw, III 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).

  • Autonomous data aided GPS signal acquisition method and system
    Patent number: 6295024
    Abstract: A data-aided system and method of GPS signal acquisition from a plurality of broadcasted GPS signals includes receiving (401) the GPS signals and providing a digitized signal. Then, a first portion (407) of the digitized signal is correlated to a code replica and a real-time code phase delay is determined. A capture start time is determined (411) dependent on a Time Of Arrival (409) based on the determined real-time code phase delay. Next, a second portion of the digitized signal is captured into a memory (413) commencing coincident with the determined capture start time. Then the second portion of the digitized signal is extracted from the memory and correlated to the code replica (411) to determine an off-line code phase delay. A position fix is calculated (417) and includes the off-line code phase delay.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: September 25, 2001
    Assignee: Motorola, Inc.
    Inventors: Thomas M. King, Issac N. Durboraw, III