Signal processing device, method of correction data using the same, and display apparatus having the same

A method of correcting data, comprising:

• storing a first color correction data having the same number of bits as an input image data and a second color correction data having fewer number of bits than the input image data;
• expanding the second color correction data to a third color correction data having a number of bits equal to the number of bits of the input image data using linear interpolation;
• and
• correcting the input image data corresponding to a first gray-scale range with reference to the first color correction data, and correcting the input image data corresponding to a second gray-scale range with reference to the third color correction data to generate an output image data, wherein the second gray-scale range is higher than the first gray-scale range.

A display apparatus comprising:

• a signal processor correcting a color characteristic of an input image data with reference to a first color correction data and a third color correction data and outputting the corrected input image data as an output image data;
• and
• a display panel displaying an image in response to the output image data,
• wherein the signal processor comprises:
• a memory storing the first color correction data having the same number of bits as the input image data and a second color correction data having fewer number of bits than the input image data;
• a bit expander receiving the second color correction data and expanding the second color correction data to the third color correction data having a number of bits equal to the number of bits of the input image data using a linear interpolation;
• and
• a color corrector receiving the input image data, correcting the input image data corresponding to a first gray-scale range with reference to the first color correction data, and correcting the input image data corresponding to a second gray-scale range with reference to the third color correction data to generate the output image data, wherein the second gray-scale range is higher than the first gray-scale range.