Patent ID: 6016168
Filing Date: 2000-01-18
Classification: H04N

Abstract:
A color correction device, comprising;a determining unit which calculates the position of input R, G, and B signals on chrominance axes, and outputs the position as at least two of r, b, and g signals;an index table unit which uniformly divides the area defined by the chrominance axes into plural positions, and outputs an address corresponding to the position of the R, G, and B signals according to said at least two of r, b, and g signals;a first memory which stores one or more correction coefficient tables of correction coefficients, corresponding to the plural positions assigned by said index table unit, at designated addresses;a second memory which stores one or more modification coefficient tables of modification coefficients, corresponding to the plural positions assigned by said index table unit, at designated addresses, each of said modification coefficients tables designating a region corresponding to a color to be strengthened or weakened on the basis of a specific color;a coefficient table selector which selects a modification coefficient table from said second memory corresponding to a strengthening or weakening of a particular color based on a user adjustment input or which selects a correction coefficient table from said first memory in an absence of a user adjustment input; andan operation unit which adaptively changes said input R, G, and B signals through a matrix operation using coefficients corresponding to said address output by said index table unit and corresponding to the coefficient table selected by said coefficient table selector and outputting the adaptively changed R, G, and H signals as R', B', and G' signals.