Patents by Inventor Jan R.E. Thimansson

Jan R.E. Thimansson 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).

  • Speaker impedance measurement
    Patent number: 9237406
    Abstract: An integrated circuit for processing audio and voice signals in a telephone is disclosed. The integrated circuit comprises an audio output port having a first and a second output terminal for connection to a first and a second input terminal, respectively, of a speaker. The integrated circuit further comprises an audio input port having a first and a second input terminal for connection to a first and a second output terminal of an audio input source. The integrated circuit also comprises at least one audio output path and one audio input path. Moreover, the integrated circuit comprises a test impedance, such as a resistor, (RT) for measuring an electrical impedance of the speaker.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: January 12, 2016
    Assignee: ST-ERICSSON SA
    Inventors: Federico Guanziroli, Sergio Pernici, Robert Nilsson, Jan R. E. Thimansson
  • Speaker Impedance Measurement
    Publication number: 20130170659
    Abstract: An integrated circuit for processing audio and voice signals in a telephone is disclosed. The integrated circuit comprises an audio output port having a first and a second output terminal for connection to a first and a second input terminal, respectively, of a speaker. The integrated circuit further comprises an audio input port having a first and a second input terminal for connection to a first and a second output terminal of an audio input source. The integrated circuit also comprises at least one audio output path and one audio input path. Moreover, the integrated circuit comprises a test impedance, such as a resistor, (RT) for measuring an electrical impedance of the speaker.
    Type: Application
    Filed: July 7, 2011
    Publication date: July 4, 2013
    Applicant: ST-ERICSSON SA
    Inventors: Federico Guanziroli, Sergio Pernici, Robert Nilsson, Jan R.E. Thimansson