Patents by Inventor Shawn M. Verbout

Shawn M. Verbout 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).

  • System and method for comparing signals
    Patent number: 6622118
    Abstract: A method and system that include a first measurement signal and a second measurement signal that can be input to first and second filters. The filters can be subject to a first constraint to minimize the energy difference between the first and second measurement signals on a per frequency basis, and subject to a second constraint that includes a model frequency and phase response. By adapting the filters subject to the two constraints, coherent differences between the two measurement signals can be identified. In one embodiment, the system can be applied to Synthetic Aperture Radar (SAR) data.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: September 16, 2003
    Assignee: Alphatech, Inc.
    Inventors: Steven M. Crooks, Shawn M. Verbout
  • Low-power digital filtering utilizing adaptive approximate filtering
    Patent number: 5999954
    Abstract: A method of digital filtering and a digital filter having a filter response with a predetermined filter order. The filter response produces a predetermined set of filtered output samples defining an output signal from a received input signal. The difference between the power associated with the input signal and the power associated with the output signal is calculated. The filter order of the filter response is varied based on the calculated difference of power in order to change the filter response.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: December 7, 1999
    Assignees: Massachusetts Institute of Technology, Trustees of Boston University
    Inventors: Jeffrey T. Ludwig, S. Hamid Nawab, Anantha P. Chandrakasan, James M. Ooi, Shawn M. Verbout