Patents by Inventor Gerard Duvic

Gerard Duvic 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).

  • Circuit for producing analog signals of primary colors of a television signal from its digital luminance and chrominance components
    Patent number: 4743960
    Abstract: Circuit for producing analog primary signals of a television signal from its digital luminance and chrominance components comprising in series an interpolating digital filter, a digital dematrixer and three digital - analog converters.The interpolating digital filter carried out an oversampling of the luminance signal Y in a ratio of 2 and an oversampling of each chrominance signal CR, CB in a sampling ratio such that the sampling frequency of the luminance and chrominance digital signals has the same sampling frequency. The digital dematrixer produces the primary digital color signals from the oversampled luminance and chrominance components.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: May 10, 1988
    Assignees: Etat Francais, Telediffusion de France
    Inventors: Gerard Duvic, Michel Veillard, Laurent Paris, Patrice Senn