Display device, video signal processing method, and program

A video signal processing method in a display device provided with a display portion having (i) a pixel, which has a light-emitting element for self-light emitting according to a current amount and a pixel circuit, which controls a current applied to the light-emitting element according to a voltage signal, (ii) a scanning line supplying a selection signal, by which a pixel to be emitted is selected, to the pixel at a predetermined scanning cycle, and (iii) a data line supplying the voltage signal, which corresponds to an input video signal, to the pixel, the video signal processing method comprising the steps of:

• calculating an average luminance of the input video signal during a predetermined period;
• and
• setting a real duty defining light-emitting time for light emitting of the light-emitting element every one frame according to the average luminance calculated in the calculating step,
• wherein,
• the setting step includes setting the real duty such that (a) a light-emitting amount defined by a standard duty set beforehand and a maximum luminance of a video signal, and (b) a light-emitting amount defined by the real duty to be set and the average luminance, are the same as each other.

A non-transitory storage medium for use with a display device provided with a display portion having (i) a pixel, which has a light-emitting element for self-light emitting according to a current amount and a pixel circuit, which controls a current applied to the light-emitting element according to a voltage signal, (ii) a scanning line supplying a selection signal, by which a pixel to be emitted is selected, to the pixel at a predetermined scanning cycle, and (iii) a data line supplying the voltage signal, which corresponds to an input video signal, to the pixel, wherein the storage medium has information stored thereon that, when executed by a processing unit in the display device, causes the processing unit to perform the functions of:

• calculating an average luminance of the input video signal during a predetermined period;
• and
• setting a real duty defining light-emitting time for light emitting of the light-emitting element every one frame according to the calculated average luminance,
• wherein,
• setting the real duty includes setting the real duty such that (a) a light-emitting amount defined by a standard duty set beforehand and a maximum luminance of a video signal, and (b) a light-emitting amount defined by the real duty to be set and the calculated average luminance, are the same as each other.