Patents by Inventor Tibor Duha

Tibor Duha 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 designing color filters which improve or modify color vision of human eye, and color filter means designed by the method
    Patent number: 7284856
    Abstract: The invention relates to a method for designing color filters which improve or modify color vision of the human eye. According to the invention a desired opponent signal function to be attained is divided by a real opponent signal function characteristic of the eye color vision to be improved or modified, the negative range of the resulting function is replaced by zero, the whole function is normalized to give a spectral transmission function, and, if desired, one or more section(s) of this spectral transmission function is modified. The invention also relates to color filter means designed by the above method.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: October 23, 2007
    Inventors: Tibor Duha, György Szalai, Katalin née Horváth Fluck
  • Method for designing color filters which improve or modify color vision of human eye, and color filter means designed by the method
    Publication number: 20040075810
    Abstract: The invention relates to a method for designing color filters which improve or modify color vision of the human eye. According to the invention a desired opponent signal function to be attained is divided by a real opponent signal function characteristic of the eye color vision to be improved or modified, the negative range of the resulting function is replaced by zero, the whole function is normalised to give a spectral transmission function, and, if desired, one or more section(s) of this spectral transmission function is modified. The invention also relates to color filter means designed by the above method.
    Type: Application
    Filed: November 17, 2003
    Publication date: April 22, 2004
    Inventors: Tibor Duha, Gyorgy Szalai, Katalin nee Horvath Fluck