Patents by Inventor Martin William Person

Martin William Person 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).

  • Flip-flop cell having clock skew protection
    Patent number: 5774003
    Abstract: A flip-flop cell having a main data input, a main scan data input, a main data output and a main clock input. The flip-flop cell includes a multiplexer having first and second inputs and an output. The first input is coupled to the main data input of the flip-flop cell and the second input is coupled to the main scan data input of the flip-flop cell. A first latch has a data input, a data output and an inverting clock input. The data input of the first latch is coupled to the output of the multiplexer. A second latch has a data input, a data output and a non-inverting clock input. The data input of the second latch is coupled to the data output of the first latch. A third latch has a data input, a data output and an inverting clock input. The data input of the third latch is coupled to the data output of the second latch, and the data output of the third latch is coupled to the main data output of the flip-flop cell.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: June 30, 1998
    Assignee: National Semiconductor Corporation
    Inventors: Fazal Ur Rahman Qureshi, Martin William Person