Image display apparatus and driving method thereof

Abstract

An image display apparatus includes a display having a plurality of light emitting elements. The image display apparatus also includes a controller configured to control displaying an image on the display, wherein the controller is operable to calculate an amount of light output by the plurality of light emitting elements and adjust a luminance level of the display based on the calculated amount of light output.

1 . An image display apparatus comprising:
 a display comprising a plurality of light emitting elements; and   a controller configured to control displaying images on the display; and to adjust a luminance level of the display based on a calculated light output level associated with the plurality of light emitting elements designated to emit light.   
   
   
       2 . The apparatus of  claim 1 , wherein the light output level is calculated by calculating a light emitting ratio of the display, wherein the controller lowers the luminance level of the display when the light emitting ratio of the display is relatively high. 
   
   
       3 . The apparatus of  claim 2 , wherein the light output level is calculated by further calculating a gradation level for the plurality of light emitting elements, wherein the controller lowers the luminance of the display when the gradation level is relatively high. 
   
   
       4 . The apparatus of  claim 1 , wherein the controller calculates the light output level based on image data supplied to the display. 
   
   
       5 . The apparatus of  claim 1 , wherein the light output level is calculated by calculating a gradation level for the plurality of light emitting elements, wherein the controller lowers the luminance of the display when the gradation level is relatively high. 
   
   
       6 . An image display apparatus comprising:
 a display comprising a plurality of light emitting elements; and   a controller configured to control displaying images on the display, wherein the controller estimates a power consumption value associated with the display and to adjust a luminance level of the display according to the power consumption value.   
   
   
       7 . The apparatus of  claim 6 , wherein the controller lowers the luminance level of the display when the estimated power consumption level is relatively large. 
   
   
       8 . The apparatus of  claim 6 , further comprising:
 a battery for supplying power to the display and the controller;   wherein the controller further adjusts the luminance of the display based on an estimated remaining battery level of the battery.   
   
   
       9 . The apparatus of  claim 6  wherein the power consumption value is estimated based on a calculated light output level associated with the plurality of light emitting elements designated to emit light. 
   
   
       10 . The apparatus of  claim 9 , wherein the light output level is calculated by calculating a light emitting ratio of the display. 
   
   
       11 . The apparatus of  claim 10 , wherein the light output level is calculated by further calculating a gradation level for the plurality of light emitting elements, wherein the light output level is based on both the light emitting ratio and the gradation level. 
   
   
       12 . The apparatus of  claim 9 , wherein the light output level is calculated by calculating a gradation level for the plurality of light emitting elements 
   
   
       13 . A method of driving an image display apparatus having a plurality of light emitting elements, comprising:
 receiving image data corresponding to an image to be displayed on the display;   calculating a light output level associated with the plurality of light emitting elements designated to emit light based on the image data; and   adjusting a luminance level of the display based on the calculated light output level.   
   
   
       14 . The method of  claim 13 , wherein the act of calculating the light output level comprises calculating a light emitting ratio of the display. 
   
   
       15 . The method of  claim 14 , wherein the act of calculating the light output level further comprises calculating a gradation level for the plurality of light emitting elements. 
   
   
       16 . The method of  claim 13 , wherein the act of calculating the light output level comprises calculating a gradation level for the plurality of light emitting elements. 
   
   
       17 . A method of driving an image display apparatus having a plurality of light emitting elements, comprising:
 estimating a power consumption level of the display;   determining, based on the estimated power consumption, whether a luminance level of the display should be adjusted and by how much the luminance level of the display should be adjusted; and   adjusting the luminance level of the display based on the determination.   
   
   
       18 . The method of  claim 17 , further comprising:
 detecting a remaining battery level of a battery supplying power to the display; and   wherein the act of determining is further based on the remaining battery level.   
   
   
       19 . The method of  claim 17 , wherein the act of estimating the power consumption level comprises calculating a light output level associated with the plurality of light emitting elements designated to emit light. 
   
   
       20 . The method of  claim 19 , wherein the act of calculating the light output level comprises calculating a light emitting ratio for the display. 
   
   
       21 . The method of  claim 20 , wherein the act of calculating the light output level further comprises calculating a gradation level for the plurality of light emitting elements. 
   
   
       22 . The method of  claim 19 , wherein the act of calculating the light output level comprises calculating a gradation level for the plurality of light emitting elements.