Patents by Inventor Thomas DeVon Parkinson

Thomas DeVon Parkinson 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: 5889415
    Abstract: An internal voltage referenced output driver is disclosed which is capable of generating any intermediate output level between a first and second voltage supply. The driver includes a dynamic stage which asserts, responsive to a first input voltage being asserted on a driver input terminal, a first output voltage on a driver output terminal, a disabling signal on an enabling terminal, and a stabilizing signal on the stabilizer terminal. Responsive to a second input voltage being asserted on the driver input terminal, the dynamic stage ceases to assert the first output voltage on the driver output terminal, asserts a release signal on the stabilizer terminal, and asserts an enabling signal on the enabling terminal. The driver further includes a static stage which, responsive to the enabling signal and the release signal, asserts a second output voltage on the driver output terminal.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: March 30, 1999
    Assignee: Philips Electronics North America Corporation
    Inventor: Thomas DeVon Parkinson