Patents by Inventor David L. Dyregrov

David L. Dyregrov 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 and apparatus for displaying three coordinates of an object in a two dimensional plane
    Patent number: 4341466
    Abstract: Apparatus and method are described for providing a display of objects in a plane wherein two dimensions of the objects are represented by the coordinates of the images representing the objects, and a third dimension such as the distance of an object from a reference plane and from other objects is represented by the contrast of the image. Apparatus for determining the angular coordinates of an object from a reference plane is described which permits the calculation of the distance from the reference plane to the object. Distances to the object may be ascertained by passive methods which illuminate the object with natural light or by active methods which illuminate the object with a laser.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: July 27, 1982
    Inventor: David L. Dyregrov