Patents by Inventor David N. Ault, Jr.

David N. Ault, Jr. 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).

  • Generating partials for perspective corrected texture coordinates in a four pixel texture pipeline
    Patent number: 6906723
    Abstract: A method, program and apparatus for generating partial differential equations for perspective corrected texture coordinates in a computer graphics display are provided. The present invention comprises calculating texture coordinates for four adjacent pixels and then determining the differences between the coordinates. A perspective correction factor is then calculated, which is multiplied by each coordinate difference.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: June 14, 2005
    Assignee: International Business Machines Corporation
    Inventor: David N. Ault, Jr.