Patents by Inventor Allan N. Nielsen

Allan N. Nielsen 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).

  • Active mute scheme for an amplifier
    Patent number: 8138828
    Abstract: Conventional muting circuitry for amplifiers (which usually uses clamps) generally has about 20-30 dB of attenuation. Here, an integrated circuit or IC is provided that includes an amplifier, switch networks, and a controller. The controller provides control signals to the switch network to provide mute functionality by actively muting the amplifier. In particular, feedback is provided through at least one of the switch networks to drive the output of the amplifier to null or ground so as to provide 70-80 dB (or more) of attenuation.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: March 20, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Allan N. Nielsen, Kim N. Madsen
  • ACTIVE MUTE SCHEME FOR AN AMPLIFIER
    Publication number: 20110241771
    Abstract: Conventional muting circuitry for amplifiers (which usually uses clamps) generally has about 20-30 dB of attenuation. Here, an integrated circuit or IC is provided that includes an amplifier, switch networks, and a controller. The controller provides control signals to the switch network to provide mute functionality by actively muting the amplifier. In particular, feedback is provided through at least one of the switch networks to drive the output of the amplifier to null or ground so as to provide 70-80 dB (or more) of attenuation.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 6, 2011
    Applicant: Texas Instruments Incorporated
    Inventors: Allan N. Nielsen, Kim N. Madsen