Image Processing Device, Image Processing Method, and Liquid Crystal Display Incorporated with Image Processing Device

A liquid crystal display incorporated with an image processing device, comprising

• a buffering unit for caching a first image of high resolution input therein;
• a minifying unit for creating a second image by reducing proportionally the resolution of the first image;
• a synchronous dynamic random access memory (SDRAM) for receiving and temporarily storing the second image, and outputting a third image, which is the previous image of the second image;
• an overdriving unit for outputting a fourth image based on the overdrive-processing of the second and third images;
• a comparing unit for determining similarity and difference between the second and third images, and outputting a result of the comparison;
• a restoring unit for generating a fifth image by restoring the resolution of the fourth image to the same resolution of the first image when there is a difference between the second and third images determined by the comparing unit;
• and
• an output controlling unit for outputting the fifth image when a difference between the second and third images is determined by the comparing unit, or outputting the first image when the second and third images are determined as being identical by the comparing unit.

An image processing method, including the steps of:

• a) caching a high-resolution image input therein as a first image;
• b) generating a second image by reducing the resolution of the high resolution image input therein;
• c) receiving and temporarily storing the second image, and outputting a third image, which is the previous image of the second image;
• d) outputting a fourth image based on the overdrive-processing of the second and third images;
• e) comparing and determining whether there is a difference between the second and third images or not, and outputting a result after comparing;
• f) outputting the first image when the second and third images are identical;
• g) generating a fifth image by restoring the resolution of the fourth image identical to the resolution of the first image when the second and third images are different;
• and
• h) outputting the fifth image.