Patents by Inventor Yacoub M. El-Ziq

Yacoub M. El-Ziq 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).

  • Versatile select and hold scan flip-flop
    Patent number: 5640114
    Abstract: A scan flip-flop includes a data input, a scan input, a mode selection input, a mode control input and a clock input. When the mode selection input is set to a first selection value, and the mode control input is set to a first control value, the scan flip-flop operates as a D flip-flop. When the mode selection input is set to a second selection value, the scan flip-flop shifts in a scan input value on the scan input when one of the mode control input and the clock input is toggled. Also, as long as the mode selection input is set to the first selection value, and the mode control input is set to a second control value, the scan flip-flop holds a current value within the scan flip-flop.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: June 17, 1997
    Assignee: VLSI Technology, Inc.
    Inventors: Yacoub M. El-Ziq, Douglas Kay