Patents by Inventor Masahiro Furuhata

Masahiro Furuhata 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 of transforming light-source color data and non-luminous object color data
    Patent number: 5033857
    Abstract: Herein disclosed is a method for mutual transformation between the data of a light-source color on a color CRT monitor and the light-source color. The transformation can be performed by using any of the following two formulas:R.sub.c (.lambda.)=[I.sub.c (.lambda.)/I.sub.g (.lambda.)]R.sub.G (.lambda.);and ##EQU1## wherein: Both R.sub.c (.lambda.), and X, Y and Z express the non-luminous object color data which are designated at a spectral reflectance factor and the CIE tristimulas values, respectively; andBoth I.sub.c (.lambda.), and R.sub.c, G.sub.c and B.sub.c express the light-source color data, which are designated at a spectral distribution and the RGB video drive signals, respectively.Unknown parameters R.sub.G (.lambda.) and I.sub.G (.lambda.), and K.sub.R, K.sub.G and K.sub.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: July 23, 1991
    Assignee: Niigata Prefecture
    Inventors: Junichi Kubota, Naoki Hasegawa, Masahiro Furuhata, Kenjiro Watanabe