Color space conversion system
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PURPOSE: To provide a system which reduces redundancy in a storage part for storing calculated difference values which is required for color space conversion. CONSTITUTION: For the purpose of improving the efficiency of an interpolation processor 40, a device 20 is included which is provided with a calculation processor which calculates the distance between each output color and a set of color signals adjacent to each prescribed output color in an output color space to generate a set of difference signals as functions of distance, a difference memory 106 where difference signals received from the calculation processor are stored, and a storage controller 104 which controls storage of difference signals to direct only digital distance signals of digital differences related to known colors out of those, which have not been previously stored, to addresses of the difference memory from the calculation processor with respect to adjacent known colors. COPYRIGHT: (C)1995,JPO