Patent ID: 9589499
Date: 2017-03-07
CPC Classifications: G09G

Claim:
1. A display device comprising: an average picture level (APL) calculator configured to calculate an APL of an input image and output the APL of the input image and an APL curve data; a luminance adjuster including at least two luminance adjusting units that are enabled in response to a user input through a user interface; a data modulator configured to modulate a digital data of the input image using a luminance defined in the APL curve data adjusted by the luminance adjuster; a display panel driving circuit configured to write the digital data modulated by the data modulator on a display panel and reproduce the input image on the display panel, a host system calculating the average picture level in each frame of the input image using the average picture level calculator, selecting the APL curve data depending on the user input, performing at least one of the luminance adjusting units selected through the user interface, and adjusting a selected APL curve data using the at least one of the luminance adjusting units; and a timing controller modulating the digital data of the input image using the data modulator and transmitting the digital data modulated by data modulator to the display panel driving circuit, and generating timing control signals for controlling operation timing of the display panel driving circuit, wherein any one of the at least two luminance adjusting units decides a motion of the input image to adjust a luminance of an APL section based on the motion of the input image, wherein the APL curve data includes only N APL points on an APL curve, where N is a positive integer between 2 and 20, wherein the N APL points are points positioned at boundaries between neighboring sections when the APL curve is equally divided into N sections, wherein the host system transmits an adjusted APL curve data outputted from the luminance adjuster to the timing controller in a vertical blank period of each frame period, wherein the luminance adjuster multiplies the luminance of the APL curve data by a weight value to adjust the selected APL curve data, and then transmits the adjusted APL curve data to the timing controller.