Method for compensating data, data compensating apparatus for performing the method and display apparatus having the data compensating apparatus

A data compensating apparatus comprising:

• a pre-compensating part which converts image data of an n-th frame, where n is a natural number, into pre-compensation data of the n-th frame having a gray scale less than or equal to a gray scale of the image data of the n-th frame based on pre-compensation data of an (n−1)-th frame;
• a storage part which stores the pre-compensation data of the n-th frame;
• and
• a compensating part which generates compensation data of the n-th frame having a gray scale greater than or equal to the gray scale of the image data of the n-th frame by using the image data of the n-th frame and the pre-compensation data of the (n−1)-th frame.

A display apparatus comprising:

• a display panel which displays an image;
• a data compensating part comprising:
• a pre-compensating part which converts image data of an n-th frame, where n is a natural number, into pre-compensation data of the n-th frame having a gray scale less than or equal to a gray scale of the image data of the n-th frame based on pre-compensation data of an (n−1)-th frame;
• a storage part which stores the pre-compensation data of the n-th frame;
• and
• a compensating part which generates compensation data of the n-th frame having a gray scale greater than or equal to the gray scale of the image data of the n-th frame by using the image data of the n-th frame and the pre-compensation data of the (n−1)-th frame;
• a data driving part which converts the compensation data of the n-th frame into an analog data signal and outputs the analog data signal to the display panel;
• and
• a gate driving part which outputs a gate signal to the display panel in synchronization with the output of the analog data signal from the data driving part.