Patents by Inventor David E. Heinen

David E. Heinen 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).

  • Display system utilizing digital-analog vector generation
    Patent number: 4157537
    Abstract: A system wherein dynamic capability is incorporated into direct view storage tube terminals to provide both refreshed and stored information. More specifically, the system incorporates dynamic picture capability into direct view storage tubes by utilizing a constant rate vector generator, a high speed deflection system and a local digital memory operating simultaneously to enable refreshed and stored vectors to be simultaneously displayed.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: June 5, 1979
    Assignee: Tektronix, Inc.
    Inventors: Thomas B. Cheek, Douglas J. Doornink, Roger M. Handy, David E. Heinen, Joseph H. Hubert, Ronald J. Wilson