Patents by Inventor Doug Button

Doug Button 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).

  • Passive group delay beam forming
    Patent number: 9426562
    Abstract: A loudspeaker array and methods for generating sound in an arc pattern. The loudspeaker array includes a plurality of loudspeakers. A delay network is included, the delay network having a plurality of stages. Each stage has a stage input and a stage output. The stage output of each stage is coupled to the stage input of a next stage. Each stage output is also connected to at least one of the plurality of loudspeakers. The stage input of the first stage is coupled to an audio signal input. Each stage is configured to add an electrical delay of the audio signal at each subsequent stage. The electrical delay is adjusted such that the plurality of loudspeakers generates sound in a desired radiation pattern.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: August 23, 2016
    Assignee: Harman International Industries, Incorporated
    Inventor: Doug Button
  • PASSIVE GROUP DELAY BEAM FORMING
    Publication number: 20150139455
    Abstract: A loudspeaker array and methods for generating sound in an arc pattern. The loudspeaker array includes a plurality of loudspeakers. A delay network is included, the delay network having a plurality of stages. Each stage has a stage input and a stage output. The stage output of each stage is coupled to the stage input of a next stage. Each stage output is also connected to at least one of the plurality of loudspeakers. The stage input of the first stage is coupled to an audio signal input. Each stage is configured to add an electrical delay of the audio signal at each subsequent stage. The electrical delay is adjusted such that the plurality of loudspeakers generates sound in a desired radiation pattern.
    Type: Application
    Filed: January 16, 2015
    Publication date: May 21, 2015
    Inventor: Doug Button
  • Passive group delay beam forming
    Patent number: 8971547
    Abstract: A loudspeaker array and methods for generating sound in an arc pattern. The loudspeaker array includes a plurality of loudspeakers. A delay network is included, the delay network having a plurality of stages. Each stage has a stage input and a stage output. The stage output of each stage is coupled to the stage input of a next stage. Each stage output is also connected to at least one of the plurality of loudspeakers. The stage input of the first stage is coupled to an audio signal input. Each stage is configured to add an electrical delay of the audio signal at each subsequent stage. The electrical delay is adjusted such that the plurality of loudspeakers generates sound in a desired radiation pattern.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 3, 2015
    Assignee: Harman International Industries, Incorporated
    Inventor: Doug Button
  • PASSIVE GROUP DELAY BEAM FORMING
    Publication number: 20130336505
    Abstract: A loudspeaker array and methods for generating sound in an arc pattern. The loudspeaker array includes a plurality of loudspeakers. A delay network is included, the delay network having a plurality of stages. Each stage has a stage input and a stage output. The stage output of each stage is coupled to the stage input of a next stage. Each stage output is also connected to at least one of the plurality of loudspeakers. The stage input of the first stage is coupled to an audio signal input. Each stage is configured to add an electrical delay of the audio signal at each subsequent stage. The electrical delay is adjusted such that the plurality of loudspeakers generates sound in a desired radiation pattern.
    Type: Application
    Filed: January 8, 2010
    Publication date: December 19, 2013
    Applicant: Harman International Industries, Incorporated
    Inventor: Doug Button