Patents by Inventor Joseph B. Gaalaas

Joseph B. Gaalaas 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).

  • Patent number: 9131326
    Abstract: A method and apparatus for determining if there is a stream of video signals corresponding with a stream of audio signals. If the sample rate of a digital bitstream including is determined. if the sample rate is 48 m kHz (where m is an integer), it is determined that there are video signals corresponding to the audio signals. If the sample rate is 44.1 m kHz (where m is an integer), it is determined that there are no video signals corresponding to the audio signals.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: September 8, 2015
    Assignee: Bose Corporation
    Inventor: Joseph B. Gaalaas
  • Publication number: 20140056440
    Abstract: Processing a signal includes: receiving data that includes an input signal; filtering the input signal to generate a filtered signal, such that if the input signal includes at least one instance of a nonlinear distortion of a desired signal then the filtered signal includes a signature signal corresponding to the nonlinear distortion, the nonlinear distortion characterized by a time duration that is within a predetermined range; and detecting whether or not the filtered signal includes the signature signal.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 27, 2014
    Applicant: Bose Corporation
    Inventors: James P. Mulvey, Joseph B. Gaalaas
  • Patent number: 8351621
    Abstract: A system for limiting the excursion of an audio speaker. The system may include first lowpass filter circuitry configured to receive a system input signal and to generate a first signal. The system may further include clipping circuitry configured between the first lowpass filter circuitry and the first combiner circuitry. The system may include first highpass filter circuitry configured to receive the system input signal and to generate a second signal. The system may include second lowpass filter circuitry configured to receive a combined output signal from the first combiner circuitry. The system may include allpass filter circuitry configured to receive the system input signal and to generate a fourth signal. The system may include second highpass filter circuitry configured to receive the fourth signal from the allpass filter circuitry. The second combiner circuitry may be configured to generate an excursion limiting output signal.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: January 8, 2013
    Assignee: Bose Corporation
    Inventors: Hilmar Lehnert, Michael W. Stark, Joseph B. Gaalaas, Brian J. Gawronski
  • Publication number: 20120101605
    Abstract: A method and apparatus for determining if there is a stream of video signals corresponding with a stream of audio signals. If the sample rate of a digital bitstream including is determined. if the sample rate is 48m kHz (where m is an integer), it is determined that there are video signals corresponding to the audio signals. If the sample rate is 44.1m kHz (where m is an integer), it is determined that there are no video signals corresponding to the audio signals.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 26, 2012
    Applicant: BOSE CORPORATION
    Inventor: Joseph B. Gaalaas
  • Publication number: 20110235824
    Abstract: The present disclosure generally relates to a system for limiting the excursion of an audio speaker. The system may include first lowpass filter circuitry configured to receive a system input signal and to generate a first signal. The system may further include clipping circuitry configured between the first lowpass filter circuitry and the first combiner circuitry. The system may include first highpass filter circuitry configured to receive the system input signal and to generate a second signal. The system may include second lowpass filter circuitry configured to receive a combined output signal from the first combiner circuitry. The system may include allpass filter circuitry configured to receive the system input signal and to generate a fourth signal. The system may include second highpass filter circuitry configured to receive the fourth signal from the allpass filter circuitry. The second combiner circuitry may be configured to generate an excursion limiting output signal.
    Type: Application
    Filed: March 26, 2010
    Publication date: September 29, 2011
    Inventors: Hilmar Lehnert, Michael W. Stark, Joseph B. Gaalaas, Brian J. Gawronski
  • Patent number: 7106224
    Abstract: A communication system, source and destination ports of the communication system, and methodology is provided for transporting data in one of possibly three different ways. Data is transported across the network at a frame sample rate that can be the same as or different from the sample rate or master clock within the source port or the destination port. If the sample rate of the source port is known, the sample rate of the destination port can be created using a PLL within the destination port and simply employing a phase comparator in the source port. The phase comparator forwards the phase or frequency difference of the network transfer rate and the source sample rate to the destination port, which then generates a local clock equivalent to the source which then compiles audio data being played at the same rate in which it was sampled at the source. Where economically feasible, sample rate conversion can be used at the source.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: September 12, 2006
    Assignee: Standard Microsystems Corporation
    Inventors: David J. Knapp, John G. Maddox, Joseph B. Gaalaas
  • Publication number: 20040032350
    Abstract: A communication system, source and destination ports of the communication system, and methodology is provided for transporting data in one of possibly three different ways. Data is transported across the network at a frame sample rate that can be the same as or different from the sample rate or master clock within the source port or the destination port. If the sample rate of the source port is known, the sample rate of the destination port can be created using a PLL within the destination port and simply employing a phase comparator in the source port. The phase comparator forwards the phase or frequency difference of the network transfer rate and the source sample rate to the destination port, which then generates a local clock equivalent to the source which then compiles audio data being played at the same rate in which it was sampled at the source. Where economically feasible, sample rate conversion can be used at the source.
    Type: Application
    Filed: August 14, 2002
    Publication date: February 19, 2004
    Inventors: David J. Knapp, John G. Maddox, Joseph B. Gaalaas