DISPLAY DEVICE AND PROCESSING METHOD OF IMAGE SIGNAL

摘要

An image processing method includes: receiving an input image signal (IIS); doubling the IIS into frames; determining a TGM mode to control an order in which gamma curves (GC) are to be applied to the doubled IIS, the GCs including first and second GCs; applying the GCs to the doubled IIS based on the TGM mode to generate a doubled, TGM-processed image signal (DTIS); correcting the DTIS to generate a corrected image signal (CIS); and dither-processing the CIS to generate an output image signal. The dither-processing of the CIS includes: performing dither-processing by sequentially applying dithering patterns (DP) of a first DP set to the CIS in association with first ones of the frames with respect to the first GC, and performing the dither-processing by sequentially applying DPs of a second DP set to the CIS in association with second ones of the frames with respect to the second GC.

主权项

1. A method to process an image signal, comprising:
receiving an input image signal; doubling the input image signal into frames; determining a temporal gamma mixing (TGM) mode to control an order in which different gamma curves are to be applied to the doubled input image signal, the different gamma curves comprising a first gamma curve and a second gamma curve; applying the different gamma curves to the doubled input image signal based on the TGM mode to generate a doubled, TGM-processed image signal; correcting the doubled, TGM-processed image signal to generate a corrected image signal; and dither-processing the corrected image signal to generate an output image signal, wherein dither-processing the corrected image signal comprises:
performing dither-processing by sequentially applying dithering patterns of a first dithering pattern set to the corrected image signal in association with first ones of the frames with respect to the first gamma curve, andperforming dither-processing by sequentially applying dithering patterns of a second dithering pattern set to the corrected image signal in association with second ones of the frames with respect to the second gamma curve, and wherein the first dithering pattern set is different from the second dithering pattern set.