Patents by Inventor Craig T. Prunty

Craig T. Prunty 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).

  • Signal translator for interconnecting CMOS and BiCMOS logic gates
    Patent number: 5225721
    Abstract: A signal translator circuit receives digital input signals of one voltage polarity and translates them to digital output signals of an opposite polarity. One embodiment of the translator converts conventional CMOS signal levels of +5 and 0 volts to modified CMOS signal levels of 0 and -5.2 volts. Another embodiment of the translator converts the 0 and -5.2 volt signals to the +5 and 0 volt signals. Both embodiments of the translator are made of transistors whose breakdown voltage only slightly exceeds +5 volts.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: July 6, 1993
    Assignee: Unisys Corporation
    Inventors: Laszlo V. Gal, Craig T. Prunty