Patents by Inventor Dennis L. Griffith

Dennis L. Griffith 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 methods for applying bass compensation
    Patent number: 9225305
    Abstract: Systems and methods for providing bass compensation to correct for uneven bass response are disclosed. An example bass compensation system includes a low pass filter configured to receive an audio signal from an audio source and provide a filtered audio signal, the low pass filter having a roll off of at least 18 dB per octave. The bass compensation system further includes a summing amplifier coupled to the low pass filter and configured to sum the audio signal from said audio source and the filtered audio signal to provide a summed audio signal, wherein the summed audio signal provided by the summing amplifier provides a bass boost at a first frequency and mid bass cut at a second frequency greater than the first frequency.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: December 29, 2015
    Assignee: AUDIOCONTROL, INC.
    Inventors: Dennis L. Griffiths, Robert Charles Winegar
  • SYSTEM AND METHODS FOR APPLYING BASS COMPENSATION
    Publication number: 20130156225
    Abstract: Systems and methods for providing bass compensation to correct for uneven bass response are disclosed. An example bass compensation system includes a low pass filter configured to receive an audio signal from an audio source and provide a filtered audio signal, the low pass filter having a roll off of at least 18 dB per octave. The bass compensation system further includes a summing amplifier coupled to the low pass filter and configured to sum the audio signal from said audio source and the filtered audio signal to provide a summed audio signal, wherein the summed audio signal provided by the summing amplifier provides a bass boost at a first frequency and mid bass cut at a second frequency greater than the first frequency.
    Type: Application
    Filed: February 19, 2013
    Publication date: June 20, 2013
    Inventors: Dennis L. Griffiths, Robert Charles Winegar
  • SYSTEM AND METHODS FOR APPLYING BASS COMPENSATION IN AN AUTOMOBILE
    Publication number: 20120076324
    Abstract: Systems and methods for providing bass compensation to correct for uneven bass response are disclosed. An example bass compensation system includes a low pass filter configured to receive an audio signal from an audio source and provide a filtered audio signal, the low pass filter having a roll off of at least 18 dB per octave. The bass compensation system further includes a summing amplifier coupled to the low pass filter and configured to sum the audio signal from said audio source and the filtered audio signal to provide a summed audio signal, wherein the summed audio signal provided by the summing amplifier provides a bass boost at a first frequency and mid bass cut at a second frequency greater than the first frequency.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicant: AudioControl, Inc.
    Inventors: DENNIS L. GRIFFITHS, Robert Charles Winegar
  • Fender extension of a truck vehicle
    Patent number: D641298
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 12, 2011
    Assignee: International Truck Intellectual Property Company, LLC
    Inventors: David J. Beigel, Marcey K. Collins, Robert P. Scott, Joseph F. DeNatale, L. David Allendorph, Christopher Spurlin, Dennis L. Griffith
  • Cab body of a step van
    Patent number: D642961
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: August 9, 2011
    Assignee: International Truck Intellectual Property Company, LLC
    Inventors: David J. Beigel, Marcey K. Collins, Robert P Scott, Joseph F. DeNatale, L. David Allendorph, Christopher Spurlin, Frederick William Dyer, Robert Scott Tirey, Nicholas D. Lengacher, William Fairful, Dennis L. Griffith, Darshan Subramanyam
  • Truck vehicle cab
    Patent number: D645380
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 20, 2011
    Assignee: International Truck Intellectual Property Company, LLC
    Inventors: David J. Beigel, Marcey K. Collins, Robert P. Scott, Joseph F. DeNatale, L. David Allendorph, Christopher Spurlin, Frederick William Dyer, Robert Scott Tirey, Nicholas D. Lengacher, William Fairful, Dennis L. Griffith