Patents by Inventor Robin E. R. Davies

Robin E. R. Davies 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 for pre-clipping a line lying within a clipping rectangular region which is a subset of a region of a display screen
    Patent number: 5369741
    Abstract: A method for drawing lines on a graphics device in such manner in that only those points lying inside a specified rectangular area of the device are drawn. Predetermined digital outcodes are generated for defining the endpoints of the lines and a decision is made whether to draw or not draw the lines based on the relationship of the endpoints with respect to both the specified rectangular area of the device, and a second larger rectangular area of the device.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: November 29, 1994
    Assignee: ATI Technologies
    Inventors: Adrian H. Hartog, Robin E. R. Davies