Patents by Inventor F. Bryan Davies

F. Bryan Davies 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 based on-board vehicle navigation system including predictive filtering and map-matching to reduce errors in a vehicular position
    Patent number: 6615135
    Abstract: An accurate position of a mobile receiver is determined using a received positional signal having relatively low and high frequency noise components corrupting the positional accuracy of the positional signal. A low frequency error associated with a detected turn of the mobile receiver is derived and applied as a low frequency correction factor to positions of the receiver derived after the turn is detected. Resulting corrected positions are applied along with associated high frequency correction factors representative of the high frequency noise component to a predictive filter to derive predicted positions substantially free of the low and high frequency noise components.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: September 2, 2003
    Assignee: PRC Inc.
    Inventor: F. Bryan Davies
  • Automatic vehicle routing and recommendation system
    Patent number: 6496774
    Abstract: The present invention relates generally to automatic vehicle navigational systems, and more particularly, to an automatic vehicle routing and recommendation system. Even more particularly, the present invention is directed to a system for choosing one of a plurality of potential vehicles in a fleet for routing the fleet vehicle over the shortest distance and/or time from a current location to a target point such as a fire or a passenger for a taxicab.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: December 17, 2002
    Assignee: PRC Inc.
    Inventor: F. Bryan Davies
  • Satellite based on-board vehicle navigation system including predictive filtering and map-matching to reduce errors in a vehicular position
    Publication number: 20020177950
    Abstract: An accurate position of a mobile receiver is determined using a received positional signal having relatively low and high frequency noise components corrupting the positional accuracy of the positional signal. A low frequency error associated with a detected turn of the mobile receiver is derived and applied as a low frequency correction factor to positions of the receiver derived after the turn is detected. Resulting corrected positions are applied along with associated high frequency correction factors representative of the high frequency noise component to a predictive filter to derive predicted positions substantially free of the low and high frequency noise components.
    Type: Application
    Filed: May 24, 2001
    Publication date: November 28, 2002
    Inventor: F. Bryan Davies
  • AUTOMATIC VEHICLE ROUTING AND RECOMMENDATION SYSTEM
    Publication number: 20020177945
    Abstract: The present invention relates generally to automatic vehicle navigational systems, and more particularly, to an automatic vehicle routing and recommendation system. Even more particularly, the present invention is directed to a system for choosing one of a plurality of potential vehicles in a fleet for routing the fleet vehicle over the shortest distance and/or time from a current location to a target point such as a fire or a passenger for a taxicab.
    Type: Application
    Filed: May 24, 2001
    Publication date: November 28, 2002
    Inventor: F. Bryan Davies