Patent ID: 8368724

Claim:
A display apparatus comprising: a display panel; a display controller configured to control a brightness of an image displayed on the display panel and to control an output of a backlight of the display panel; and a control unit configured to detect the detect a remaining amount of a battery and to control the display controller in accordance with the remaining amount of the battery, wherein the control unit includes an operation unit configured to calculate an output value of the backlight and a pixel brightness correction value of the image displayed on the display panel, wherein the operation unit is configured to calculate a brightness limit value (BR lim ) and the output value of the backlight (OP out ) in accordance with the remaining amount of the battery, and to calculate the pixel brightness correction value (BR out ) in accordance with the brightness limit value, and wherein the brightness limit value is expressed by: BR lim =I 1 *[( BA max −BA min )/( BA rem −BA min )]*( BR max −BR limmax )+ J 1 *BR min +K 1 where BR lim is the brightness limit value, BA rem is the remaining amount of the battery, BA min is the minimum capacity of the battery, BA max is the maximum capacity of the battery, BR max is a maximum brightness value, BR limmax is a maximum brightness limit value, BR min is a minimum brightness value, and I 1 , J 1 , and K 1 are non-zero correction coefficients.