Patent ID: 9711080
Date: 2017-07-18
CPC Classifications: G09G

Claim:
1. A timing controller of an organic light emitting diode (OLED) display device comprising: a memory configured to sequentially store input video data of respective frames, wherein the input video data is of a moving image; a determiner configured to compare the input video data of respective frames to determine whether a scene in the input video data is changed; and a converter configured to: reduce luminance of the input video data comprised in a first scene section that includes a first scene responsive to the determiner determining that the scene is changed to the first scene, the luminance of the input video data reduced from a peak luminance to a luminance that is lower than the peak luminance; output image data comprised in the first scene section including the first scene with the reduced luminance, wherein driving currents supplied to organic light emitting diodes included in the OLED display device are reduced in accordance with the reduced luminance of the outputted image data; gradually increase the luminance of the input video data from the lower luminance to the peak luminance responsive to the determiner determining that the first scene is changed to a second scene included in a second scene section; output image data comprised in the second scene section including the second scene with the increased luminance, wherein the driving currents supplied to the organic light emitting diodes are gradually increased in accordance with the gradual increase of the luminance of the outputted image data, reduce the luminance of the input video data from the peak luminance to the luminance that is lower than the peak luminance while a plurality of frames corresponding to the second scene are displayed immediately after the gradual increase of the luminance reaches the peak luminance; and output image data comprised in the second scene section including the second scene with the reduced luminance, wherein the driving currents supplied to the organic light emitting diodes are decreased in accordance with the reduction of the luminance of the outputted image data; wherein the converter reduces the luminance of the input video data in the first scene section to a maximum reduction amount based on a predetermined luminance reduction rate, and wherein the maximum reduction amount is differently set according to a peak luminance of total input video data in each same scene section.