Patents by Inventor Seydou Ba

Seydou Ba 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).

  • Adaptive noise cancellation
    Patent number: 10707881
    Abstract: The present disclosure relates to a structure including an adaptive noise canceller circuit which is configured to suppress noise in a feedback sigma-delta modulator circuit and provide real-time tracking of a noise cancellation signal.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: July 7, 2020
    Inventors: Seydou Ba, Ahmed R. Fridi
  • Automatic loop-bandwidth calibration for a digital phased-locked loop
    Patent number: 9007109
    Abstract: A phase-locked loop digital bandwidth calibrator includes a digital loop filter having a gain multiplier memory and a perturbation unit configured to generate a calibration offset signal to initiate a calibration. Additionally, the phase-locked loop digital bandwidth calibrator also includes a digital bandwidth calibration unit configured to provide a corrected nominal gain for storage in the gain multiplier memory, wherein a digital gain correction for the corrected nominal gain is determined by a digital integration stage and a correction database. A phase-locked loop digital bandwidth calibration method is also provided.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: April 14, 2015
    Assignee: Nvidia Corporation
    Inventors: Seydou Ba, Abdellatif Bellaouar, Ahmed R Fridi
  • AUTOMATIC LOOP-BANDWIDTH CALIBRATION FOR A DIGITAL PHASED-LOCKED LOOP
    Publication number: 20140333351
    Abstract: A phase-locked loop digital bandwidth calibrator includes a digital loop filter having a gain multiplier memory and a perturbation unit configured to generate a calibration offset signal to initiate a calibration. Additionally, the phase-locked loop digital bandwidth calibrator also includes a digital bandwidth calibration unit configured to provide a corrected nominal gain for storage in the gain multiplier memory, wherein a digital gain correction for the corrected nominal gain is determined by a digital integration stage and a correction database. A phase-locked loop digital bandwidth calibration method is also provided.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 13, 2014
    Applicant: Nvidia Corporation
    Inventors: Seydou Ba, Abdellatif Bellaouar, Ahmed R. Fridi