Patents by Inventor Roderick D. Nelson

Roderick D. Nelson 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).

  • GaAs level-shift logic interface circuit
    Patent number: 4743782
    Abstract: A very high speed, low power integrated interface circuit using GaAs or InP technology is provided for converting small digital voltage swings to larger swings which are particularly suitable for analog control signals. The preferred embodiments employ solely depletion mode MESFETS and Schottky diodes in Schottky diode field effect logic (SDFL) configurations.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: May 10, 1988
    Assignee: Honeywell Inc.
    Inventors: Roderick D. Nelson, Peter C. T. Roberts, Tho T. Vu
  • Digital circuit using MESFETS
    Patent number: 4631426
    Abstract: Two MESFETS with the drain of one connected to the source of the other are driven in complementary fashion by a single inverter using a third MESFET and a voltage level shifter, in response to digital signals input to the inverter. Means for selectively disconnecting the power supply from the inverter to place the circuit in a low power, standby mode is provided. Depletion and enhancement mode MESFET configurations of the circuit are disclosed.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: December 23, 1986
    Assignee: Honeywell Inc.
    Inventors: Roderick D. Nelson, Tho T. Vu