Hand-held GPS-mapping device

DC
  • US 5,902,347 A
  • Filed: 03/27/1997
  • Issued: 05/11/1999
  • Est. Priority Date: 11/19/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for personal, portable mapping and navigation, by a user, and adapted to display a map image to the user and to display to the user, the user'"'"'s location, on the map image, comprising:

  • a) a case;

    b) a digital computer mounted in the case;

    c) a location receiver unit associated with the case and adapted to provide user location information to the computer;

    d) an image storage unit adapted to store image data and to provide the image data to the computer;

    e) a display unit adapted to receive data from the computer and display the data as an image to the user, the display unit having an optical viewport assembly , including a light excluding barrel, a solid-states video display chip, at one end of the barrel and adapted to form an image, a viewing aperture at the other at the other end of the barrel, and a lens system mounted in the barrel and adapted to present an enlarged version of the image to the viewing aperture; and

    f) a computer program adapted to control the computer, and to cause the computer to present the user location information and the image data to the display unit so that the display unit displays, to the user, a map image and the user location, on the map image.

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