Patents by Inventor M. David Blythe

M. David Blythe 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 enhancement of display screen resolution
    Patent number: 4939673
    Abstract: A method and apparatus for enhanced line endpoint positioning in an analog vector display, for use in high resolution color film recording and other high resolution imaging processes associated with computer generated graphics.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: July 3, 1990
    Assignee: Hewlett-Packard Company
    Inventors: Paul R. Hanau, M. David Blythe
  • Method for time modulation in vector film recorders
    Patent number: 4827434
    Abstract: Time modulation in a vector film recorder is used to control the color of an image to be recorded by using a constant intensity electron beam and controlling the number of electron beam sweeps for each primary color in a color filter wheel and for each vector in a set of vectors which when summed make up the image to be recorded.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: May 2, 1989
    Assignee: Hewlett-Packard Company
    Inventors: Paul R. Hanau, M. David Blythe