Patents by Inventor Christopher EKBOM

Christopher EKBOM 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).

  • Temperature monitoring for loudspeakers
    Patent number: 10582300
    Abstract: Methods and Apparatus for estimating a temperature of an electromechanical transducer. The method comprising receiving an audio signal (901); providing an output signal to the electromechanical transducer, based on the audio signal (902); and determining whether a first magnitude of the audio signal in a first frequency band is above a magnitude threshold (903). In response to the first magnitude being above or equal to the magnitude threshold, calculating a first impedance of the electromechanical transducer based on measurements of a first voltage and a first current of the electromechanical transducer within the first frequency band (905), and estimating the temperature of the electromechanical transducer based on the first impedance (907).
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: March 3, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: Ylva Ellen Maria Bjork, Erik Vilhelm Lindahl, Jason William Lawrence, Christopher Ekbom
  • TEMPERATURE MONITORING FOR LOUDSPEAKERS
    Publication number: 20180367897
    Abstract: Methods and Apparatus for estimating a temperature of an electromechanical transducer. The method comprising receiving an audio signal (901); providing an output signal to the electromechanical transducer, based on the audio signal (902); and determining whether a first magnitude of the audio signal in a first frequency band is above a magnitude threshold (903). In response to the first magnitude being above or equal to the magnitude threshold, calculating a first impedance of the electromechanical transducer based on measurements of a first voltage and a first current of the electromechanical transducer within the first frequency band (905), and estimating the temperature of the electromechanical transducer based on the first impedance (907).
    Type: Application
    Filed: June 12, 2018
    Publication date: December 20, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Ylva Ellen Maria BJORK, Erik Vilhelm LINDAHL, Jason William LAWRENCE, Christopher EKBOM