Patent ID: 7436382

Claim:
An image correction device comprising: an encoder which encodes inputted object frame data and produces an encoded object frame data; a delay device connected to said encoder, for delaying the encoded object frame data by one frame and outputting an encoded previous frame data; a first decoder connected to said encoder and decoding said encoded object frame data to produce decoded object frame data; a second decoder, connected to said delay device and decoding said encoded previous frame data to produce decoded previous frame data; a change quantity calculating device that receives said decoded object frame data from said first decoder and said decoded previous frame data from said second decoder, and outputs a change quantity derived from subtracting said decoded object frame data from said decoded previous frame data; a previous frame image reproducer that receives said change quantity and said inputted object frame data and adds said change quantity to said inputted object frame data producing previous frame reproduction image data; and a frame data correction device that outputs corrected object frame data based on said inputted object frame data, said change quantity and said previous frame reproduction image data.