Patents by Inventor Stéphane Pefferkorn

Stéphane Pefferkorn 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 continuously controlling the quality of distributed digital sounds
    Patent number: 6804566
    Abstract: The invention concerns a method for continuously controlling the quality of distributed digital sounds broadcast by radio or television on a digital channel. The method consists in temporally breaking down the digital signal into sequences of samples; carrying out a spectral analysis of each sequence to observe the variations in energy and envelope of the digital signal and calculating a global quality index; and in calculating on the basis of the global quality index, a final gated and continuous quality index representing the quality of the digital signals. The invention is applicable to the continuous control of the quality of distributed sounds.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: October 12, 2004
    Assignees: France Telecom, Telediffusion de France
    Inventors: Catherine Colomes, Stéphane Pefferkorn, Thierry Alpert, Eric Monteux