Patents by Inventor Fabio Chelli

Fabio Chelli 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).

  • Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration
    Patent number: 7230482
    Abstract: A common mode control circuit reduces abrupt voltage changes at the outputs of a pair of amplifiers which, in turn, reduces EMI and distortions that occur when the correlation between the signals fed to the four channels of an audio system diminishes. The common mode control circuit generates for each amplifier a reference potential that is a saturated replica of the respective differential input signal of the amplifier that saturates when the amplifier switches to a bridge configuration.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: June 12, 2007
    Assignee: STMicroelectronics S.r.l.
    Inventors: Fabio Chelli, Davide Brambilla
  • Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration
    Publication number: 20060022749
    Abstract: A common mode control circuit reduces abrupt voltage changes at the outputs of a pair of amplifiers which, in turn, reduces EMI and distortions that occur when the correlation between the signals fed to the four channels of an audio system diminishes. The common mode control circuit generates for each amplifier a reference potential that is a saturated replica of the respective differential input signal of the amplifier that saturates when the amplifier switches to a bridge configuration.
    Type: Application
    Filed: December 23, 2004
    Publication date: February 2, 2006
    Applicant: STMicroelectronics S.r.l.
    Inventors: Fabio Chelli, Davide Brambilla