| 摘要 |
A display panel driver includes: a compression circuit, when receiving image data of NxM pixels of a target block, generating compressed image data corresponding to the target block by compressing the image data; an image memory storing the compressed image data; a decompression circuit generating decompressed image data by decompressing the compressed image data from the image memory; and a drive circuit driving a display panel in response to the decompressed image data. The compression circuit selects one of a plurality of compression methods based on a correlation between the image data of the NxM pixels, and generates the compressed image data by the selected compression method. The plurality of compression methods includes: a first method calculating a first value corresponding to image data of the NxM pixels and putting the first value in the compressed image data, a second method calculating a second value corresponding to image data of n pixels of the NxM pixels and putting the second value in the compressed image data, and a third method calculating a bit plane reducing data by performing a bit plane reduction process independently on image data of each of the NxM pixels and putting the bit plane reducing data in the compressed image data.
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