Image display apparatus and information processing apparatus

摘要

According to one embodiment, an image display apparatus includes a liquid crystal panel, a backlight, a luminance distribution calculation unit, an error calculation unit, and an emission intensity update unit. The backlight includes a plurality of light sources which emit light. The luminance distribution calculation unit calculates a predicted value for an intensity distribution of light entering the liquid crystal panel if each of the light sources is lit with an emission intensity. The error calculation unit obtains a brightness of a display image which is realized if the each of the light sources is lit with the emission intensity, and the error calculation unit calculates an error between the obtained brightness and an ideal brightness of the display image corresponding to the input video signal. The emission intensity update unit updates the emission intensity of the each of the light sources to reduce the error.

主权项

1. An image display apparatus comprising:
a liquid crystal panel; a backlight including a plurality of light sources configured to light; a luminance distribution calculation unit configured to calculate a predicted value for an intensity distribution of light entering the liquid crystal panel if each of the light sources is lit with an emission intensity, based on luminance distribution data concerning light entering the liquid crystal panel, and the emission intensity of the each of the light sources; an error calculation unit configured to obtain, based on the predicted value, a lower limit and an upper limit of a brightness of a display image which is realized if the each of the light sources is lit with the emission intensity, and also configured to calculate a first error and a second error, the first error being between the lower limit and an ideal brightness of the display image corresponding to the input video signal, the second error being between the upper limit and the ideal brightness; and an emission intensity update unit configured to update the emission intensity of the each of the light sources to reduce the first error and the second error, based on the first error, the second error, and the intensity distribution data, and also configured to output the updated emission intensity to the luminance distribution calculation unit.