Patents by Inventor Ralf Willenbrock

Ralf Willenbrock 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 for determining traffic related information
    Patent number: 6865475
    Abstract: In a method for determining traffic-related information within a traffic system with the aid of mobile detectors, e.g., vehicles selected at random, the information which is used for determining the traffic situation includes at least the standard deviation of the driven speed of the mobile detector compared to the average speed of the mobile detector on a section of a road and/or the sum of the stationary time on the section of the road.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: March 8, 2005
    Assignee: Volkswagen AG
    Inventor: Ralf Willenbrock
  • Method for describing and generating road networks and corresponding road network
    Patent number: 6850840
    Abstract: A method is for describing and generating road networks for determining traffic information or road traffic data and/or for determining the traveling times on routes or stretches of routes by at least one mobile detector. The mobile detector includes a position determining device and a device for data communication with a control center. A road network is for determining traffic information and/or for determining the traveling time by at least one mobile detector, e.g., a vehicle. The road network and/or parts of the road network are substantially described by node and/or contour points.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: February 1, 2005
    Assignees: Volkswagen AG, PTV AG
    Inventors: Ralf Willenbrock, Hans Hubschneider, Ulrich Mehlhaus, Michael Ortgiese