Patents by Inventor Joellen Wilbur

Joellen Wilbur 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).

  • Wideband-to-narrowband conversion method and apparatus
    Patent number: 6445647
    Abstract: A wideband-to-narrowband conversion method and apparatus performs the operational step of receiving an acoustic wideband signal, initially incident on an array of acoustic wideband transducers and subsequently digitized, and in response thereto generating a spatial Wigner bilinear kernel output signal, and the operational step of receiving and spatially bandpass filtering the spatial Wigner bilinear kernel output signal to remove a wideband low frequency portion as well as any unwanted noise therefrom and retain and output only a narrowband portion thereof.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: September 3, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert J. McDonald, Joellen Wilbur