Patents by Inventor Hirotaka Tatsumi

Hirotaka Tatsumi 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).

  • Howling suppressing apparatus
    Patent number: 8180070
    Abstract: A howling suppressing apparatus includes: a detecting unit configured to detect howling of input audio signals; a plurality of filters configured to apply a filter process sequentially to the audio signals to be output; and a setting unit configured to set a filter coefficient for suppressing the howling detected by the detecting unit for a filter among the plurality of filters, in which filter no filter coefficient for suppressing howling is set, and set a filter coefficient for suppressing the howling detected by the detecting unit for any one of the plurality of filters, if filter coefficients for suppressing howling are set in all of the plurality of filters, based on the detection result from the detecting unit.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: May 15, 2012
    Assignees: Semiconductor Components Industries, LLC, Sanyo Semiconductor Co., Ltd.
    Inventor: Hirotaka Tatsumi
  • Howling Suppressing Apparatus
    Publication number: 20090052691
    Abstract: A howling suppressing apparatus includes: a detecting unit configured to detect howling of input audio signals; a plurality of filters configured to apply a filter process sequentially to the audio signals to be output; and a setting unit configured to set a filter coefficient for suppressing the howling detected by the detecting unit for a filter among the plurality of filters, in which filter no filter coefficient for suppressing howling is set, and set a filter coefficient for suppressing the howling detected by the detecting unit for any one of the plurality of filters, if filter coefficients for suppressing howling are set in all of the plurality of filters, based on the detection result from the detecting unit.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 26, 2009
    Applicants: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventor: Hirotaka Tatsumi