Device for adjusting color video signals
View Patent ↗A device for adjusting color video signals, and in particular the color video signals produced by a film analyzer comprises a matrix for processing the color video signals to regulate the components of three basic colors into color video signals passing through the matrix. A controller controls the matrix with respect to hues which correspond to the color video signals, respectively.
1. Apparatus for correcting color video signals, comprising:
a matrix, through which the color video signals pass to control the proportions of three primary colors in matrixed color value signals,
means for controlling the matrix as a function of hue of the color video signals respectively,
means for controlling the matrix as a function of color saturation;
memories for storing information which the matrix uses to control the color value signals;
a converter for generating a hue signal from the color video signals, the hue signal connected to inputs of the memories;
wherein the matrix comprises nine multipliers and three adders,
wherein three of the nine multipliers are connected to one adder, respectively,
wherein the memories store coefficients of the matrix that are set as a function of hue of the color video signals; and
wherein the converter generates a color saturation signal from the color video signals, supplied to multipliers located in the supply lines of the correction values to the matrix.
2. Apparatus for correcting color video signals, comprising:
a matrix through which the color video signals pass to control the proportions of three primary colors in matrixed color value signals,
means for controlling the matrix as a function of hue of the color video signals respectively,
means for controlling the matrix as a function of color saturation;
memories for storing information which the matrix uses to control the color value signals;
a converter for generating a hue signal from the color video signals, the hue signal connected to inputs of the memories;
wherein the matrix comprises nine multipliers and three adders,
wherein three of the nine multipliers are connected to one adder, respectively;
wherein the memories store coefficients of the matrix that are set as a function of hue of the color video signals;
wherein the memories store correction values for coefficients of the matrix, wherein the correction values are set as a function of hue of the color video signals; and
wherein the converter generates a color saturation signal from the color video signals, supplied to multipliers located in the supply lines of the correction values to the matrix.