Patent ID: 8345071

Claim:
A display control circuit for receiving external input image data to generate write gray scale level data to be given to a display panel for displaying an image, the display control circuit comprising: a write gray scale level determining part for generating the write gray scale level data by correcting the received input image data in accordance with an amount of shift from a gray scale level represented by preceding frame image data generated based on input image data in an immediately preceding frame period to a gray scale level represented by the currently received input image data; an achievable gray scale level determining part for generating, in accordance with the amount of shift, achievable gray scale level data of a gray scale level estimated to be displayed after a lapse of one frame period on the display panel to which the write gray scale level data is given; a predicting and selecting part for predicting whether abnormal noise will be generated in the image to be displayed on the display panel according to the achievable gray scale level data, and selecting the achievable gray scale level data when it is predicted that no abnormal noise will be generated while selecting the input image data when it is predicted that the abnormal noise will be generated; a compressing part for compressing the data selected by the predicting and selecting part, in an irreversible manner, to a variable length code containing a fixed length portion code generated without fail and a variable length portion code generated only in a predetermined case, for each block including plural pieces of pixel data; a data storing part for storing the variable length code obtained by the data compression in the compressing part; and a decoding part for reading the variable length code from the data storing part, decoding the variable length code, and giving the decoded data as preceding frame image data in an immediately subsequent frame period to each of the write gray scale level determining part and the achievable gray scale level determining part, wherein the predicting and selecting part predicts, based on the plural pieces of pixel data contained in the input image data, the generation of the abnormal noise related to an error to be caused when the compressing part compresses the achievable gray scale level data in the irreversible manner and then the decoding part decodes the compressed data.