Patents by Inventor Timothy P. Reed

Timothy P. Reed 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).

  • Transmission line driver circuits
    Patent number: 4952818
    Abstract: A driver circuit is provided which includes an output stage having first and second transistors and an output terminal, the first transistor being of a first type conductivity is coupled from the output terminal to a first point of reference potential and the second transistor being of a second type conductivity is coupled from the output terminal to a second point of reference potential. A first voltage divider includes transistors of the first type conductivity and a second voltage divider includes transistors of the second type conductivity. A second transistor of the first type conductivity is connected between the first point of reference potential and a control electrode of the first transistor of the first type conductivity and a second transistor of the second type conductivity is connected between the second point of reference potential and a control electrode of the first transistor of the second type conductivity.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: August 28, 1990
    Assignee: International Business Machines Corporation
    Inventors: Charles K. Erdelyi, Timothy P. Reed