Patents by Inventor Dave Rossum

Dave Rossum 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: 11461069
    Abstract: A multi-core audio processor includes a plurality of audio processing cores having differing capabilities, a plurality of buffers, wherein each buffer is configured to store a plurality of samples associated with a corresponding audio stream, a deadline scheduler including a plurality of deadline registers configured to store a plurality of deadline values for each audio stream, and a plurality of audio processing core interfaces coupling the plurality of audio processing cores to the deadline scheduler, each of the audio processing core interfaces associated with a corresponding audio processing core. The plurality of deadline values indicate an order of processing of samples stored in the plurality of buffers by the plurality of processing cores.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: October 4, 2022
    Assignee: KNOWLES ELECTRONICS, LLC.
    Inventors: Erick Alvarado, Xiaojun Chen, Dave Rossum, Niel Warren
  • Publication number: 20200257489
    Abstract: A multi-core audio processor includes a plurality of audio processing cores having differing capabilities, a plurality of buffers, wherein each buffer is configured to store a plurality of samples associated with a corresponding audio stream, a deadline scheduler including a plurality of deadline registers configured to store a plurality of deadline values for each audio stream, and a plurality of audio processing core interfaces coupling the plurality of audio processing cores to the deadline scheduler, each of the audio processing core interfaces associated with a corresponding audio processing core. The plurality of deadline values indicate an order of processing of samples stored in the plurality of buffers by the plurality of processing cores.
    Type: Application
    Filed: September 24, 2018
    Publication date: August 13, 2020
    Applicant: KNOWLES ELECTRONICS, LLC
    Inventors: Erick ALVARADO, Xiaojun CHEN, Dave ROSSUM, Niel WARREN
  • Publication number: 20190349676
    Abstract: Methods and systems for synchronizing audio streams. The method includes tagging a first presentation time to a frame buffer of a first audio stream and a second presentation time to a frame buffer of a second audio stream. The second audio stream is to be synchronized to the first audio stream. The method also includes aligning the second presentation time of the frame buffer of the second audio stream with the first presentation time of the frame buffer of the first audio stream, resampling the second audio stream so that each resampling point of the second stream is aligned with a corresponding sampling point in the first audio stream, and determining sample data for each resampling point of the second audio stream.
    Type: Application
    Filed: November 7, 2017
    Publication date: November 14, 2019
    Applicant: KNOWLES ELECTRONICS, LLC
    Inventors: Xiaojun Chen, Dave Rossum