Patent ID: 8872864

Claim:
A display device connected with a color space information generating device which is separated from and independent of the display device, the display device comprising: a display unit; and a correcting unit that corrects brightness or a color tone of the display unit, the display device further comprising: a measuring unit that measures the brightness or the color tone of the display unit; a difference calculating unit that calculates a difference between a measurement value measured by the measuring unit and a predetermined target value; a correction-amount calculating unit that calculates a correction amount to correct the brightness or the color tone of the display unit based on the difference calculated by the difference calculating unit; a first determining unit that determines establishment of a condition that an operator is absent; and a second determining unit that determines establishment of a condition that the operator is present, wherein the correcting unit corrects the brightness or the color tone by using the correction amount calculated by the correction-amount calculating unit when the first determining unit determines that the condition that the operator is absent is established, and the display device further comprises a storage unit that stores a corrected measurement value of the brightness or the color tone measured by the measuring unit after the correcting unit corrects the brightness or the color tone; and an output unit that outputs, according to reading from the color space information generating device, the corrected measurement value stored in the storage unit to the color space information generating device that generates color space information concerning color management for achieving reproducibility of colors based on the corrected measurement value, when the second determining unit determines that the condition that the operator is present is established.