Patents by Inventor Joseph Ciprian

Joseph Ciprian 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).

  • Vehicle heading change determination using compensated differential wheel speed
    Patent number: 6631321
    Abstract: A vehicle positioning application in a navigation system provides for determining a change of vehicle heading using differential wheel speed sensors and compensates for dynamic and static changes in the wheel radii.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: October 7, 2003
    Assignee: Navigation Technologies Corp.
    Inventor: Joseph Ciprian
  • Vehicle positioning using three metrics
    Patent number: 6317683
    Abstract: A program and method are disclosed that provide for determining a position of a vehicle relative to a road network represented by a geographic database. An intermediate position density is determined along a plurality of road segments in the road network by shifting a prior position density which had been determined along the plurality of road segments by a distance traveled by the vehicle since the prior position density had been determined. Then, the intermediate position density is modified to take into account sensor-derived data received since the prior position density had been determined to form a new position density. The sensor-derived data include data indicating three metrics, namely (1) a position of the vehicle, (2) a heading of the vehicle, and (3) a curvature history. The curvature history represents a change of heading of the vehicle as a function of distance.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: November 13, 2001
    Assignee: Navigation Technologies Corp.
    Inventors: Joseph Ciprian, Bishnu P. Phuyal, Robert Fernekes, David S. Lampert