Patents Assigned to Arkenstone, Inc.
  • Patent number: 5470233
    Abstract: The present invention is a global positioning system that helps a blind pedestrian navigate through a city. This system uses the Department of Defense Global Positioning System (GPS) and a Differential GPS receiver to determine a pedestrian's longitude and latitude. Once these coordinates have been determined, they are correlated with a computerized map database. The map database holds the names and coordinates of specific locations, such as intersections, in a particular region. The system of the present invention retrieves the names of locations from the map database that are near the pedestrian. These names are then output to a voice synthesizer.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: November 28, 1995
    Assignee: Arkenstone, Inc.
    Inventors: James R. Fruchterman, William C. Schwegler, Bruce W. Merritt, Charles LaPierre
  • Patent number: D350116
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: August 30, 1994
    Assignee: Arkenstone, Inc.
    Inventor: James M. Zeiszler