A method for clearing blur images of a monitor is disclosed. An original image data is provided. The original image data is transformed from an RGB encoded format to a YUV encoded format. The transformation is compressed as the original image data with the YUV encoded format. The compressed original image data is written in a random access memory (RAM) using a predefined method. The compressed original image data is decompressed. The original image data is transformed from the YUV encoded format to the RGB encoded format. The original image data is outputted to a display device using a driving unit.