Patents by Inventor Leonard J. Hourvitz

Leonard J. Hourvitz 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 a plurality of graphic images
    Patent number: 4982343
    Abstract: A method and apparatus for performing graphic compositing operations in a computer system, with improved system performance, is provided. The apparatus and method performs the plurality of compositing operations by implementing a series of write functions, selected from a group of write functions, in a predetermined combination or order.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: January 1, 1991
    Assignee: NeXT, Inc.
    Inventors: Leonard J. Hourvitz, John K. Newlin, Richard A. Page