Patent ID: 8928684
Filing Date: 2015-01-06
Classification: G06T,G09G,H04N

Abstract:
1. An overdrive device, applied to an active shutter three-dimensional (3D) system, for respectively display a first viewing angle image and a second viewing angle image in first and second viewing angle display periods which are adjacent and sequentially triggered, the first and second viewing angle images having a grayscale range R, R being a natural number greater than 1, the overdrive device comprising: a training unit, for establishing a luminance difference look-up table (LUT) having an R an analysis unit, for sequentially receiving first viewing angle input image data and second viewing angle input image data, looking up the luminance difference LUT according to first pixel data and second pixel data corresponding to a same pixel position in the first viewing angle input image data and the second viewing angle input image data to correspondingly obtain a looked-up luminance difference, and generating a luminance difference index for each pixel position according to the looked-up luminance difference; a contrast adjustment unit, for performing a conversion in response to the luminance difference index corresponding to each pixel position to obtain a luminance difference adjustment gain, and accordingly adjusting a grayscale of the second pixel data to obtain corrected pixel data; and an overdrive unit, for providing an overdrive voltage for driving the display device according to the corrected pixel data.