Patents by Inventor Marcello Gagliardi

Marcello Gagliardi 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 for correcting a harmonic distortion of a power bridge, in particular for a class D amplifier
    Patent number: 7667537
    Abstract: To correct for harmonic distortion of a power bridge, the form of a pulse at the output of the power bridge and of estimate of non idealities under different current conditions is acquired. An estimate of a current at the output of the power bridge is also acquired. The switching control signal applied to the power bridge is then regulated based on the acquired estimates. More specifically, an area error introduced by the estimated non-idealities of the power bridge for a certain output current is determined and the edges of the switching control signal input to the power bridge are temporally shifted in response to the determined area error so as to account for the determined area error and correct for harmonic distortion concerns in the output signal.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: February 23, 2010
    Assignee: STMicroelectronics S.r.l.
    Inventors: Federico Forte, Marcello Gagliardi
  • Method for correcting a harmonic distortion of a power bridge, in particular for a class D amplifier
    Publication number: 20070091654
    Abstract: To correct for harmonic distortion of a power bridge, the form of a pulse at the output of the power bridge and of estimate of non idealities under different current conditions is acquired. An estimate of a current at the output of the power bridge is also acquired. The switching control signal applied to the power bridge is then regulated based on the acquired estimates. More specifically, an area error introduced by the estimated non-idealities of the power bridge for a certain output current is determined and the edges of the switching control signal input to the power bridge are temporally shifted in response to the determined area error so as to account for the determined area error and correct for harmonic distortion concerns in the output signal.
    Type: Application
    Filed: October 20, 2006
    Publication date: April 26, 2007
    Applicant: STMicroelectronics S.r.l.
    Inventors: Federico Forte, Marcello Gagliardi