Patents by Inventor Eric Clifford Pearson

Eric Clifford Pearson 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, apparatus and system for verification of patterns
    Patent number: 5848189
    Abstract: A method, apparatus and system for verifying the establishment of a pattern includes a unit for storing a template of the pattern, a unit for acquiring an image of the established pattern, a first image processing unit to alter at least one of said template and acquired images to produce at least two resultant images, a comparison unit to compare the two resultant images with the other of said template and acquired image and a unit to evaluate the results of each comparison to determine if the established pattern includes a defect. Both gray scale and binary processing and comparisons are disclosed for use as required.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: December 8, 1998
    Assignee: Focus Automation Systems Inc.
    Inventors: Eric Clifford Pearson, Bradley John McCloy, Joseph Daniel Burjoski