Patents by Inventor William L. Kelly-Mahaffey

William L. Kelly-Mahaffey 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).

  • Automated visual inspection of electronic component leads prior to placement
    Patent number: 5185811
    Abstract: A method and apparatus utilizing one or two cameras are described for visually inspecting a polygonal component located at the end of the robotic end effector for determining presence, position and orientation of component leads prior to placement. Image processing improvements are provided for decreasing computational complexity by representing two dimensional image areas of interest, and each containing leads along one side of a component, by one dimensional summation profiles.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: February 9, 1993
    Assignee: International Business Machines Corporation
    Inventors: Gregory E. Beers, Myron D. Flickner, William L. Kelly-Mahaffey, Darryl R. Polk, James M. Stafford, Henry E. Wattenbarger
  • Finding fiducials on printed circuit boards to sub pixel accuracy
    Patent number: 5086478
    Abstract: A method is disclosed for determining the presence and position of fiducials on the surface of a printed circuit substrate in grey level images to sub-pixel accuracy. A summation profile technique is utilized to decrease the amount of computation required and thereby increase throughput for enabling real time operation in a total component placement system.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: February 4, 1992
    Assignee: International Business Machines Corporation
    Inventors: William L. Kelly-Mahaffey, James M. Stafford