Patent ID: 7034788

Claim:
An image data processing circuit for correcting an image data representing a gray-scale level of an image to be displayed by a liquid crystal element, wherein a voltage applied to said liquid crystal element is determined based on said image data, said image data processing circuit comprising: a coding circuit for outputting a coded-image data which is produced by coding said image data of a present frame; a first decoding circuit for decoding said coded-image data, thereby producing a first decoded-image data corresponding to said present frame; a delay circuit for delaying the coded-image data by one frame period; a second decoding circuit for decoding said coded-image data which is delayed by one frame period, thereby producing a second decoded-image data corresponding to a previous frame; a detecting circuit for detecting a deference between said first decoded-image data and said second decoded-image data; an image reproducing circuit for producing a previous-frame-image data on the basis of the image data of said present frame and the difference between said first decoded-image data and said second decoded-image data; and a data correcting circuit for correcting said image data of said present frame in accordance with the difference of said gray-scale level between said present frame and said previous frame obtained from said previous-frame-image data and said image data of said present frame.