Patent ID: 8350793

Claim:
An image over-driving device for a display device comprising a plurality of pixel units and displaying a displayed object according to an image signal in a plurality of sequential frame periods, comprising: an image detection device for detecting a size of the displayed object and a moving speed of the displayed object in the sequential frame periods according to the image signal and outputting an over-driving control signal according to the size of the displayed object and the moving speed of the displayed object in the sequential frame periods; a first image register for receiving and temporarily storing first image data of the image signal in a first frame period, and receiving second image data of the image signal and outputting the first image data as a buffer data in a second frame period sequential to the first frame period; a first over-driving unit, comprising a first lookup table and a second lookup table in which the different over-driving parameters are recorded, for generating a first over-driving signal according to the buffer data, the second image data, and the first lookup table, and generating a second over-driving signal according to the buffer data, the second image data, and the second lookup table; a first multiplexer for selecting the first over-driving signal or the second over-driving signal according to the over-driving control signal to drive the display device; a second over-driving unit, having a third lookup table and a fourth lookup table in which the different over-driving parameters are recorded, for generating a third over-driving signal according to the buffer data, the second image data, and the third lookup table, generating a fourth over-driving signal according to the buffer data, the second image data, and the fourth lookup table; and a second multiplexer for selecting the third over-driving signal or the fourth over-driving signal according to the over-driving control signal to the first image register; wherein the first image register outputs one of the third over-driving signal and the fourth over-driving signal as the buffer data in a third frame period sequential to the second frame period.