Patent ID: 11915388
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 19:
20. A display device comprising:
an afterimage detection device that detects an afterimage of an input image and outputs afterimage data;
a timing controller circuit that generates compensation data based on the afterimage data; and
a display panel that displays an image based on the compensation data,
wherein the afterimage detection device comprises:
a downscaling circuit that downscales an input image at a preset ratio;
an image accumulation circuit that receives at least one downscale image from the downscaling circuit and accumulates the at least one downscale image;
an afterimage detection circuit that detects an afterimage from an accumulated downscale image obtained by the image accumulation circuit and generates afterimage information; and
a weight applying circuit that receives the afterimage information, calculates a downscaling weight of a region of interest including the afterimage in the input image based on a time parameter, and provides the downscaling weight to the downscaling circuit, the downscaling circuit to downscale the region of interest according to a ratio according to the calculated downscaling weight and to downscale a general region external to the region of interest according to the preset ratio, the ratio according to the calculated downscaling weight being different from the preset ratio.