Patent ID: 7502038

Claim:
A display characteristics calibration method for calibrating display characteristics of a color display unit provided with a conversion section having a conversion table for converting a display input gradation into a display output gradation for a plurality of colors and with a color display section for performing display in accordance with the display output gradation outputted from said conversion section, comprising the steps of: calibrating said conversion section such that said color display section should show predetermined brightness and predetermined white chromaticity at a predetermined gradation of display input gradation; displaying a white screen in correspondence to the display input gradation; acquiring single color brightness of the plurality of colors from the displayed white screen, then applying a display output gradation corresponding to the display input gradation, and thereby acquiring correlation of display output gradation versus single color brightness; calculating target white brightness for a plurality of gradations of display input gradation by using predetermined display characteristics and white brightness at the predetermined gradation; distributing the target white brightness at a single color brightness ratio of the predetermined gradation and thereby acquiring target single color brightness for a plurality of gradations of display input gradation; acquiring a display output gradation that indicates brightness corresponding to the target single color brightness for a plurality of gradations of display input gradation, from the correlation of display output gradation versus single color brightness; and establishing correspondence between the acquired display output gradation and the display input gradation and thereby calibrating said conversion table.