Patents by Inventor Isaac Newton Durboraw, III

Isaac Newton 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).

  • Method and apparatus for detecting spread spectrum signals using a signal from a secondary source
    Patent number: 6178195
    Abstract: A method and apparatus for detecting and tracking spread spectrum signals, such as Global Positioning System (GPS) signals, first obtain precision timing and frequency reference information from a relatively high-power, secondary signal, such as that emanating from a satellite of a low-earth orbit (LEO) satellite communications system, and then use such reference information to perform narrow-band detection of the GPS spread spectrum signal. Accordingly, spread spectrum signals are more efficiently detected and tracked, particularly in environments where they are attenuated by obstacles such as buildings or environmental barriers.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: January 23, 2001
    Assignee: Motorola, Inc.
    Inventors: Isaac Newton Durboraw, III, Raymond Joseph Leopold
  • Spoofer detection power management for GPS receivers
    Patent number: 5995042
    Abstract: In a GPS receiver, power is conserved by powering down P-code circuitry during and utilizing C/A code circuits during times when interfering signals, such as spoofing signals, are not detected. When spoofing is detected, the P-code circuitry is powered up so that the GPS receiver can continue to operate in the presence of spoofing.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: November 30, 1999
    Assignee: Motorola, Inc.
    Inventors: Isaac Newton Durboraw, III, David Moon Yee, Robert Henry Bickley, Philip John Zucarelli
  • GPS data collection in high noise-to-signal ratio environments
    Patent number: 5768319
    Abstract: In a Global Positioning System (GPS) receiver, a significant improvement in the detection of GPS data in the presence of high interference levels is provided. In the receiver, data from multiple frames of GPS data are stacked in a memory. The stacked data is then utilized to determine the GPS data.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: June 16, 1998
    Assignee: Motorola, Inc.
    Inventor: Isaac Newton Durboraw, III