Patent ID: 9653026
Date: 2017-05-16
CPC Classifications: G09G

Claim:
1. A backlight controlling apparatus which controls a backlight in a displaying apparatus for displaying image frames based on image data at a display frame rate which is double an input frame rate, comprising: an input unit configured to input original image data of the input frame rate; a generating unit configured to generate intermediate image data corresponding to an intermediate image frame based on the original image data; a determining unit configured to determine a light emission period and a light emission intensity for causing the backlight to emit light in accordance with whether the displaying apparatus displays an original image frame based on the original image data or the intermediate image frame based on the intermediate image data generated by the generating unit based on the original image data such that (i) a first light emission period of the backlight for displaying the original image frame based on the original image data is shorter than a second light emission period of the backlight for displaying the intermediate image frame based on the intermediate image data, (ii) a first light emission intensity of the backlight for displaying the original image frame based on the original image data is higher than a second light emission intensity of the backlight for displaying the intermediate image frame based on the intermediate image data, and (iii) a first integrated value defined based on integrating the first light emission intensity by the first light emission period is approximately equal to a second integrated value defined based on integrating the second light emission intensity by the second light emission period; and a controlling unit configured to, in a case where the displaying apparatus displays image frames at the display frame rate which is double the input frame rate of the original image data, perform control to cause the backlight to emit light at the first light emission intensity for the first light emission period for displaying the original image frame based on the original image data on the displaying apparatus, and cause the backlight to emit light at the second light emission intensity for the second light emission period for displaying the intermediate image frame based on the intermediate image data generated by the generating unit based on the original image data on the displaying apparatus.