Patents by Inventor Jean-Marie Kerling

Jean-Marie Kerling 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).

  • Patent number: 4481529
    Abstract: A tri-color video signal generator, for use with either a color or black and white standard television receiver, includes a circuit for producing the color signals R, V, B and a matrix circuit for producing a luminance signal Y from the color signals. The generator further includes circuitry for modifying the respective proportions of the R, V, B color signals in the luminance signal Y whereby in a black and white receiving mode, the grey scale of the luminance signal Y is modified making it possible to accentuate the contrast between the picture elements whose original colors would have been converted into luminance levels which are very near one another.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: November 6, 1984
    Assignee: U.S. Philips Corporation
    Inventor: Jean-Marie Kerling