Display device and display method

1. A display device, comprising:

a display panel;

a driver configured to drive the display panel based on a video signal; and

a detector configured to obtain a first detection value by detecting reflective light from a reflective media, which occurs when ambient light is irradiated to the reflective media, while obtaining a second detection value by detecting reflective light from the reflective media, which occurs when the display panel irradiates display light to the reflective media.

2. The display device according to claim 1 , further comprising:

a controller configured to acquire information concerning a color temperature of the ambient light based on a corrected drive value when the driver corrects a drive value for the display panel such that the second detection value approaches the first detection value.

3. The display device according to claim 1 , further comprising:

a controller configured to acquire information concerning a color temperature of the ambient light based on a corrected drive value when the driver corrects the drive value for the display panel such that chromaticity represented by the second detection value approaches chromaticity represented by the first detection value.

4. The display device according to claim 1 , wherein the detector detects the first detection value in a black display state of the display panel.

5. The display device according to claim 1 , further comprising a video processor configured to carry out a color correction for the video signal input thereto based on color correction information produced based on information concerning a color temperature of the ambient light.

6. The display device according to claim 2 , wherein the controller acquires the drive value providing the second detection value as the information concerning the color temperature of the ambient light when a difference between the first detection value and the second detection value falls within a default value.

7. The display device according to claim 1 , wherein the detector is attached to a lower side of the display panel to detect the reflective light from the reflective media when the reflective media is held horizontally below the detector.

8. The display device according to claim 1 , wherein the display panel is equipped with a backlight having an LED.

9. A color temperature acquisition method, comprising:

driving a display panel based on a video signal; and

acquiring a first detection value by detecting reflective light from a reflective media, which occurs when ambient light is irradiated to the reflective media, while acquiring a second detection value by detecting reflective light from the reflective media, which occurs when the display panel irradiates its display light to the reflective media.

10. The color temperature acquisition method according to claim 9 , further comprising:

acquiring information concerning a color temperature of the ambient light based on a corrected drive value when a drive value for the display panel is corrected such that the second detection value approaches the first detection value.

11. The color temperature acquisition method according to claim 9 , further comprising:

acquiring information concerning a color temperature of the ambient light based on a corrected drive value when a drive value for the display panel is corrected such that chromaticity represented by the second detection value approaches chromaticity represented by the first detection value.

12. The color temperature acquisition method according to claim 9 , wherein the first detection value is detected in a black display state of the display panel.

13. The color temperature acquisition method according to claim 10 , wherein the drive value providing the second detection value is acquired as the information concerning the color temperature of the ambient light when a difference between the first detection value and the second detection value falls within a default value.

14. The color temperature acquisition method according to claim 9 , wherein the first detection value is detected when the reflective media is held horizontally below the display panel.

15. The color temperature acquisition method according to claim 9 , the second detection value is detected when the reflective media is held in confrontation with a display surface of the display panel.

16. A display method adapted to a display device using the color temperature acquisition method according to claim 9 , the display method comprising:

carrying out a color correction for a video signal input thereto based on color correction information, which is produced based on information concerning a color temperature of the ambient light acquired by the acquiring of the first detection value; and

driving the display panel based on the video signal subjected to the color correction.