Patents by Inventor Bruce W. Merritt

Bruce W. Merritt 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).

  • 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