Color image signal processing device

A color image signal processing device, comprising:

• a first output device for a color image;
• a second output device for a color image;
• a first controller for controlling the first output device;
• a second controller for controlling the second output device;
• input means connected to the first controller;
• a read only memory electronically connected to the second controller storing hue conversion data;
• and
• a random access memory electronically connected to the second controller containing a working area and space for a hue conversion table, wherein the second controller includes means for calculating hue, a hue conversion table adjustment unit and a color converter, the first and second controllers electrically connected to permit selection of a hue for correction and the amount of correction to be applied.

A method for converting a hue shown on a first output device to a hue output to a second output device, comprising the steps of:

• selecting a color from the first output device, as an XYZ.sub.in value;
• calculating a L*a*b*.sub.in value from the XYZ.sub.in value;
• converting the L*a*b*.sub.in value to an input hue value H.sub.in ;
• determining whether a value H.sub.OUT exists in a hue conversion means that corresponds to H.sub.in ;
• establishing a value H.sub.OUT ;
• calculating an L*a*b*.sub.out value based on H.sub.OUT ;
• converting the L*a*b*.sub.out value to a XYZ.sub.out value;
• converting the XYZ.sub.out value to a CMY signal;
• and
• outputting the CMY signal to the second output device.