Patents by Inventor Dung N. Tran

Dung N. Tran 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).

  • Two reference voltage weighted capacitor digital to analog converter
    Patent number: 4667179
    Abstract: A weighted capacitor digital to analog converter is disclosed which requires only one stage and one conversion step. By the use of two reference voltages and two groups of capacitors in parallel, various capacitors in these groups can be selectively switched from the reference voltages to ground potential in response to input binary digit signals thereby presenting a predetermined amount of voltage to the output amplifier depending upon the number and particular combination of capacitors switched or non-switched to ground.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: May 19, 1987
    Assignee: Xerox Corporation
    Inventors: Simon M. Law, Thierry L. Watteyne, Dung N. Tran