Patent ID: 6937252

Claim:
An image display method, which has an output brightness characteristic in which a logarithmic value of an output brightness becomes smaller as a value of an input image signal becomes larger, for displaying a visible image that said input image signal represents according to said output brightness characteristic, the image display method comprising the step of: setting said output brightness characteristic so that a rate of change, which represents a change in a logarithmic value of said output brightness with respect to a change in the value of said input image signal, in a first region of said image signal which is below a boundary value S a becomes smaller than that in a second region of said input image signal which is above a boundary value S a ; wherein the boundary value S a between the first region and the second region is represented by the following equation: 0.05 ×S max ≦S a ≦0.30 ×S max where S max is the maximum value of the image signal in the output brightness characteristic.