Response speed evaluation system for display device, response speed evaluation system for electronic device, and method driving the response speed evaluation system for the display device

1 . A response speed evaluation system for a display device, comprising:

the display device configured to display a dynamic video, and to display one or more static images generated based on input grayscales of the dynamic video;

a luminance measurer configured to measure a luminance of the static images, to measure a luminance of the dynamic video, to generate static image graphs based on the luminance of the static images, and to generate a dynamic video graph based on the luminance of the dynamic video; and

a response speed evaluator configured to generate an input graph based on the static image graphs, to generate an output graph based on the dynamic video graph, and to compare the input graph and the output graph to evaluate a response speed of the display device based on a difference between the input graph and the output graph.

2 . The response speed evaluation system for the display device of claim 1 , wherein the response speed evaluator is configured to scale the static image graphs based on a maximum luminance and a minimum luminance of the static image graphs to normalize the static image graphs.

3 . The response speed evaluation system for the display device of claim 1 , wherein the response speed evaluator is configured to calculate a representative value of a luminance of the static image graphs.

4 . The response speed evaluation system for the display device of claim 3 , wherein the representative value of the luminance of the static image graphs is a median value of the luminance of the static image graphs.

5 . The response speed evaluation system for the display device of claim 4 , wherein the response speed evaluator is configured to combine the static image graphs based on the representative value of the luminance of the static image graphs to generate the input graph.

6 . The response speed evaluation system for the display device of claim 1 , wherein the response speed evaluator is configured to scale the dynamic video graph based on a maximum luminance and a minimum luminance of the dynamic video graph to normalize the dynamic video, and to generate the output graph.

7 . The response speed evaluation system for the display device of claim 1 , wherein the response speed of the display device increases as similarity between the output graph and the input graph increases.

8 . The response speed evaluation system for the display device of claim 1 , wherein the response speed evaluator is configured to evaluate the response speed of the display device based on a difference between an area of the input graph and an area of the output graph.

9 . The response speed evaluation system for the display device of claim 8 , wherein the difference between the area of the input graph and the area of the output graph corresponds to a similarity index that is calculated by

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S_IND being the similarity index, IG_LUM being a luminance of the input graph, and OG_LUM being a luminance of the output graph.

10 . The response speed evaluation system for the display device of claim 9 , wherein the difference between the area of the input graph and the area of the output graph decreases and the response speed of the display device increases as the similarity index increases.

11 . A response speed evaluation system for an electronic device, comprising:

the electronic device comprising a display device configured to display a dynamic video and to display one or more static images generated based on input grayscales of the dynamic video, and a processor configured to control the display device;

a luminance measurer configured to measure a luminance of the static images, to measure a luminance of the dynamic video, to generate static image graphs based on the luminance of the static images, and to generate a dynamic video graph based on the luminance of the dynamic video; and

a response speed evaluator configured to generate an input graph based on the static image graphs, to generate an output graph based on the dynamic video graph, and to compare the input graph and the output graph to evaluate a response speed of the display device based on a difference between the input graph and the output graph.

12 . A method of driving a response speed evaluation system for a display device, the method comprising:

determining an input grayscale of static images based on input grayscales of a dynamic video;

measuring a luminance of the static images;

measuring a luminance of the dynamic video;

generating static image graphs based on the luminance of the static images;

generating a dynamic video graph based on the luminance of the dynamic video;

generating an input graph based on the static image graphs;

generating an output graph based on the dynamic video graph; and

comparing the input graph and the output graph to evaluate a response speed of the display device based on a difference between the input graph and the output graph.

13 . The method of claim 12 , wherein the generating the input graph and the generating the output graph comprises scaling the static image graphs based on a maximum luminance and a minimum luminance of the static image graphs to normalize the static image graphs.

14 . The method of claim 13 , wherein the generating the input graph and the generating the output graph further comprises calculating a representative value of a luminance of the static image graphs.

15 . The method of claim 14 , wherein the representative value of the luminance of the static image graphs comprises a median value of the luminance of the static image graphs.

16 . The method of claim 14 , wherein the generating the input graph and the generating the output graph further comprises combining the static image graphs based on the representative value of the luminance of the static image graphs to generate the input graph.

17 . The method of claim 16 , wherein the generating the input graph and the generating the output graph further comprises scaling the dynamic video graph based on a maximum luminance and a minimum luminance of the dynamic video graph to normalize the dynamic video and to generate the output graph.

18 . The method of claim 12 , wherein the response speed of the display device increases as a similarity between the output graph and the input graph increases.

19 . The method of claim 12 , wherein the response speed of the display device corresponds to a difference between an area of the input graph and an area of the output graph.

20 . The method of claim 19 , wherein the difference between the area of the input graph and the area of the output graph corresponds to a similarity index calculated by

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S_IND being the similarity index, IG_LUM being a luminance of the input graph, and OG_LUM being a luminance of the output graph.