Display device, brightness adjustment device, method of adjusting brightness, and program

1. A display device, comprising:

circuitry configured to

acquire various conditions for adjusting a gain of a video signal, wherein one of the various conditions is a genre of the video signal and is acquired from metadata associated with the video signal;

calculate a table representing a relationship between an average brightness and a gain of a video signal, and calculate the table capable of setting a peak brightness and power consumption of the video signal independently, based on the various conditions including the genre of the video signal;

calculate an average brightness of a video signal input for each frame;

calculate a gain of a video signal from the table based on the average brightness;

adjust a video signal using the calculated gain; and

a display panel that includes a plurality of pixels that emit light in response to a video signal and displays a video based on the video signal adjusted by the circuitry.

2. The display device according to claim 1 , wherein the circuitry is configured to acquire the various conditions including environmental information indicating an environment surrounding the display device, user setting information set by a user, information on maximum power consumption that the display panel allows, or information on meta data indicating a category of a video.

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

a memory attached to a front stage of the circuitry, the memory configured to hold temporarily a video signal of a frame by which a gain is multiplied.

4. The display device according to claim 1 , wherein the circuitry is further configured to:

calculate chromaticity of a video signal based on the various conditions; and

adjust the chromaticity of the video signal using the calculated chromaticity.

5. A brightness adjustment device, comprising:

circuitry configured to

acquire various conditions for adjusting a gain of a video signal, wherein one of the various conditions is a genre of the video signal and is acquired from metadata associated with the video signal;

calculate a table representing a relationship between an average brightness and a gain of a video signal, and calculate the table capable of setting a peak brightness and power consumption of the video signal independently, based on the various conditions including the genre of the video signal;

calculate an average brightness of a video signal input for each frame;

calculate a gain of a video signal from the table based on the average brightness; and

adjust a video signal using the calculated gain.

6. The brightness adjustment device according to claim 5 , wherein the circuitry is configured to acquire the various conditions including environmental information indicating an environment surrounding the display device, user setting information set by a user, information on maximum power consumption that the display panel allows, or information on meta data indicating a category of a video.

7. The brightness adjustment device according to claim 5 , further comprising:

a memory attached to a front stage of the circuitry, the memory configured to hold temporarily a video signal of a frame by which a gain is multiplied.

8. The brightness adjustment device according to claim 5 , wherein the circuitry is further configured to:

calculate chromaticity of a video signal based on the various conditions; and

adjust chromaticity of a video signal using the calculated chromaticity.

9. A method of adjusting brightness, comprising the steps of:

acquiring various conditions for adjusting a gain of a video signal, wherein one of the various conditions is a genre of the video signal and is acquired from metadata associated with the video signal;

calculating a table representing a relationship between an average brightness and a gain of a video signal, and calculating the table capable of setting a peak brightness and power consumption of the video signal independently, based on the various conditions including the genre of the video signal;

calculating an average brightness of a video signal input for each frame;

calculating a gain of a video signal from the table based on the calculated average brightness; and

adjusting a video signal using the calculated gain.

10. A non-transitory computer-readable medium including a program causing a computer to execute the steps of:

acquiring various conditions for adjusting a gain of a video signal, wherein one of the various conditions is a genre of the video signal and is acquired from metadata associated with the video signal;

calculating a table representing a relationship between an average brightness and a gain of a video signal, and calculating the table capable of setting a peak brightness and power consumption of the video signal independently, based on the various conditions including the genre of the video signal;

calculating an average brightness of a video signal input for each frame;

calculating a gain of a video signal from the table based on the calculated average brightness; and

adjusting a video signal using the calculated gain.

11. The display device according to claim 2 , wherein the various conditions include environmental information indicating an environment surrounding the display device.

12. The display device according to claim 2 , wherein the various conditions include information on maximum power consumption that the display panel allows.