Patent ID: 7170477
Filing Date: 2007-01-30
Classification: G09G

Abstract:
1. An image reproducing method for reproducing an image by a display apparatus having a plurality of pixels based on a picture signal including a pixel signal representing information of each pixel, comprising the steps of: performing an operation to obtain an average signal level which is an average level of all the pixel signals, then, setting an input signal-output brightness property which represents variations in brightness of a pixel with respect to the level of a pixel signal in accordance with the average signal level; reproducing an image so that an exponential value of an exponential function approximately representing the input signal-output brightness property thus set increases with an increase of the average signal level; and reproducing the image so that maximum output brightness of a pixel of the display apparatus varies in accordance with the average signal level, wherein the image is reproduced so that the maximum output brightness becomes smaller as the average signal level increases, and the maximum output brightness is independent of gamma compensation calculated by the exponential function, wherein the image is reproduced by performing an operation to obtain the maximum output brightness of a pixel of the display apparatus from the average signal level, performing compensation of the picture signal subject to compensation in accordance with the input signal-output brightness property thus set based on a result of the operation to obtain the maximum output brightness, and feeding the display apparatus with the picture signal subject to compensation.