Patent ID: 8279352

Claim:
A video display device comprising: a video processing unit for processing input video signals; a video display unit for displaying processed video signals output from the video processing unit; a storage unit for storing correction values for correcting luminance ranges of display pixels in the video display unit; a range correction unit for correcting the luminance ranges of the video display unit based on the processed video signals output from the video processing unit; a user interface for making the correction values set to the range correction unit variable; and a main control unit for controlling the range correction unit by acquiring the correction values from the storage unit in accordance with the correction level information input by the user interface, wherein the main control unit acquires the correction level information input via the user interface, calculates ideal luminance range distribution characteristics based on ideal luminance distribution characteristics approximating standard luminance distributions of the video display unit, and calculates an optimized correction value corresponding to the acquired correction level information based on a correlation between a 100% luminance range correction value at certain point and a 100% luminance range correction value of a display screen of the video display unit based on the ideal luminance range distribution characteristics, thus outputting it to the range correction unit.