Patent ID: 11908369
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The contrast enhancement device of claim 1, wherein:
the process circuit receives, as the contrast enhancement coefficient, a low gray input luminance value, a middle gray input luminance value, a high gray input luminance value, a low gray output luminance value, a middle gray output luminance value and a high gray output luminance value from the analysis circuit,
the process circuit determines a conversion difference value with respect to each luminance value of the input data by using the low gray input luminance value, the middle gray input luminance value, the high gray input luminance value, the low gray output luminance value, the middle gray output luminance value and the high gray output luminance value, and
the process circuit calculates an output luminance value corresponding to the luminance value of the input data by adding the conversion difference value to the luminance value of the input data.