Patents by Inventor Daniel J. Coffey

Daniel J. Coffey 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).

  • Process and machine for signal waveform analysis
    Patent number: 6529842
    Abstract: Highly accurate time interval measurement is achieved for an electrical waveform. The electrical waveform is sampled and converted to a series of voltages, and the series of voltages is interpolated in order to form a time tag list, using interpolations that are optimized for time interval measurement and analysis. The time tag list accurately represents the times at which particular events of interest occur, and is used to generate displays and results analysis such as adjacent cycle jitter and accurate differential triggering and analysis.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: March 4, 2003
    Inventors: Michael K. Williams, Daniel J. Coffey
  • Process and machine for signal waveform analysis
    Patent number: 6263290
    Abstract: Highly accurate time interval measurement is achieved for an electrical waveform. The electrical waveform is sampled and converted to a series of voltages, and the series of voltages is interpolated in order to form a time tag list, using interpolations that are optimized for time interval measurement and analysis. The time tag list accurately represents the times at which particular events of interest occur, and is used to generate displays and results analysis such as adjacent cycle jitter and accurate differential triggering and analysis.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: July 17, 2001
    Inventors: Michael K. Williams, Daniel J. Coffey
  • Process and machine for signal waveform analysis
    Patent number: 6137283
    Abstract: Highly accurate time interval measurement is achieved for an electrical waveform. The electrical waveform is sampled and converted to a series of voltages, and the series of voltages is interpolated in order to form a time tag list, using interpolations that are optimized for time interval measurement and analysis. The time tag list accurately represents the times at which particular events of interest occur, and is used to generate displays and results analysis such as adjacent cycle jitter and accurate differential triggering and analysis.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: October 24, 2000
    Assignee: Michael K. Williams
    Inventors: Michael K. Williams, Daniel J. Coffey