Processing image resolution

An image processing method for a display device, comprising:

• separating input image data having a first resolution into a plurality of image blocks,
• providing, from the plurality of image blocks, processed image data having a second resolution, wherein the second resolution is less than the first resolution;
• resizing the processed image data having the second resolution into output image data corresponding to resolution of a screen;
• and
• displaying, on the screen, the output image data,
• wherein the separating and the providing of the processing image data includes processing, in parallel, image data separated into the plurality of blocks based on predetermined reference clock corresponding to the second resolution and providing the processed image data having the second resolution,
• wherein the first resolution is M×N (where M and N are natural numbers), and the second resolution is (M/2)×(N/2), where M represents a number of unit pixels arranged along a horizontal direction on the screen, and N represents a number of pixel lines arranged along a vertical direction on the screen,
• wherein the separating and the providing of the processing image data having the second resolution includes:
• duplicating, by an image distributing device, the input image data and provide four distributed image data having M×N resolution,
• cropping, by a first, a second, a third, and fourth image cropping device, a predetermined amount of data each of the four distributed image data,
• providing, by a first, a second, a third, and a fourth clock changing device, the first, second, third, and fourth block image data, each having M/4×N resolution, by changing image data received from the first to the fourth image cropping device based on a predetermined reference clock.