Patents by Inventor Larke E. Reeber

Larke E. Reeber 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).

  • Patent number: 4800380
    Abstract: A page mode memory controller for a multi-plane color video display providing three bits/pixel corresponding to three page partitioning in each of sixteen 64K dynamic RAMs is described. The three bits/pixel are routed to a color lookup table to provide a choice of eight colors from a palette of 64 colors. Graphic display information is combined with alphanumeric video information on a pixel-by-pixel basis. The combined graphic/alphanumeric information is then converted from a digital signal to an analog signal. Page mode reads access three color planes for video display cycles using a counter for the two least significant memory column address bits. To create the displayed image, vectors are drawn three times, once at each plane.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: January 24, 1989
    Assignee: Convergent Technologies
    Inventors: Richard W. Lowenthal, Larke E. Reeber, Drew S. Hoffman, Michael Ramsay