A display apparatus is disclosed. In one aspect the apparatus includes an encoder configured to encode a Nth first image data, where N is an integer of 2 or greater and a (N−1)th second image data at different rates. The display further includes a memory configured to store the encoded Nth first image data and the encoded (N−1)th second image data, a decoder configured to decode the encoded Nth first image data and the encoded (N−1)th second image data received from the memory and, an image processor configured to perform color processing on the decoded Nth first image data. It also includes an image converter configured to convert the Nth first image data received from the image processor into Nth second image data and an image quality enhancer configured to enhance image quality of the Nth second image data based on the decoded (N−1)th second image data.