Patents by Inventor Michael E. Lockwood

Michael E. Lockwood 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).

  • Interference suppression techniques
    Patent number: 7613309
    Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing aids, voice input devices, surveillance devices, and other applications.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: November 3, 2009
    Inventors: Douglas L. Jones, Michael E. Lockwood, Robert C. Bilger, Carolyn T. Bilger, legal representative, Albert S. Feng, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Mark Elledge, Chen Liu
  • Systems and methods for interference suppression with directional sensing patterns
    Patent number: 7577266
    Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing, cochlear implants, speech recognition, voice input devices, surveillance devices, hands-free telephony devices, remote telepresence or teleconferencing, wireless acoustic sensor arrays, and other applications.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: August 18, 2009
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Albert S. Feng, Michael E. Lockwood, Douglas L. Jones, Carolyn J. Bilger, legal representative, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Robert C. Bilger
  • Systems and methods for interference-suppression with directional sensing patterns
    Patent number: 7076072
    Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing, cochlear implants, speech recognition, voice input devices, surveillance devices, hands-free telephony devices, remote telepresence or teleconferencing, wireless acoustic sensor arrays, and other applications.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: July 11, 2006
    Assignee: Board of Trustees for the University of Illinois
    Inventors: Albert S. Feng, Michael E. Lockwood, Douglas L. Jones, Carolyn J. Bilger, legal representative, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Robert C. Bilger, deceased
  • Interference suppression techniques
    Publication number: 20030138116
    Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing aids, voice input devices, surveillance devices, and other applications.
    Type: Application
    Filed: November 7, 2002
    Publication date: July 24, 2003
    Inventors: Douglas L. Jones, Michael E. Lockwood, Robert C. Bilger, Albert S. Feng, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Mark Elledge, Chen Liu, Carolyn T. Bilger