Patents by Inventor David W. Crain

David W. Crain 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: 4084184
    Abstract: A television object locator and image identifier, for use with a TV camera tube, having a lens whose axis is determined by the angles .theta..sub.c and .phi..sub.c. The angle .theta..sub.c forms a dihedral angle between two vertical planes, one of which contains the axis of the lens. The angle .phi..sub.c is formed by the vertical edge of the dihedral angle and the lens axis. The coordinates of the center of the lens are located at (x.sub.c, y.sub.c, z.sub.c), at the intersection of the edge and the lens axis, these coordinates also being those of the origin of the locator for a fixed camera position. Means are provided for determining the aperture angle .OMEGA..sub.c of the TV lens, as well as means for determining the angles .theta..sub.c and .phi..sub.c. Means are also provided for determining the coordinates (x.sub.o, y.sub.o, z.sub.o) of the object which is to be identified with respect to the origin. First and second means for transforming coordinates, have as inputs signals representing the angle .
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: April 11, 1978
    Inventor: David W. Crain