Patents by Inventor Ronald J. Wellman

Ronald J. Wellman 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 detecting a weak signal in a noisy environment
    Patent number: 8321491
    Abstract: Systems and methods are disclosed for computing a power spectral density of a signal. One such method computes a Fast Fourier Transform (FFT) of a first signal segment and an FFT of a second signal segment. The first and second segments are adjacent and non-overlapping in time, and the second segment follows the first. The first FFT is multiplied by a complex conjugate of the second FFT. A first complex value is computed from this first product. An FFT of a third signal segment is computed. The second and third segments are adjacent and non-overlapping in time. The third segment follows the second segment. The second FFT is multiplied by a complex conjugate of the third FFT. A second complex value is computed from this second product. The first and second complex values are added, and the power spectral density of the sum is computed.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: November 27, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Canh Ly, Edward W. Burke, Ronald J. Wellman
  • System and method for detecting a weak signal in a noisy environment
    Publication number: 20090006016
    Abstract: Systems and methods are disclosed for computing a power spectral density of a signal. One such method computes a Fast Fourier Transform (FFT) of a first signal segment and an FFT of a second signal segment. The first and second segments are adjacent and non-overlapping in time, and the second segment follows the first. The first FFT is multiplied by a complex conjugate of the second FFT. A first complex value is computed from this first product. An FFT of a third signal segment is computed. The second and third segments are adjacent and non-overlapping in time. The third segment follows the second segment. The second FFT is multiplied by a complex conjugate of the third FFT. A second complex value is computed from this second product. The first and second complex values are added, and the power spectral density of the sum is computed.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 1, 2009
    Inventors: Canh Ly, Edward W. Burke, Ronald J. Wellman
  • Quad bass drum pedal and methods of constructing and utilizing same
    Patent number: 5591929
    Abstract: A device for beating drums selectively by either foot. A first foot mechanism controls the movement of a first mallet. A second foot mechanism controls the movement of a second mallet remotely. A third foot mechanism controls the movement of a third mallet. A fourth foot mechanism controls the movement of a fourth mallet remotely. A first support mechanism, adjacent the first and fourth foot mechanisms, elevates a heel portion of a foot. A second support mechanism, adjacent the second the third foot mechanisms, elevates a heel portion of a foot.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: January 7, 1997
    Inventor: Ronald J. Wellman