Patent ID: 8155458

Claim:
An image processing apparatus for decoding coded image data, which is coded completely or coded up to a midstep, comprising: acquisition means for acquiring previously-executed image coding information regarding the coded image data, the previously-executed image coding information including information that indicates at least a type of the coded image data and a coding phase of a macroblock of the coded image data; decoding means for decoding the coded image data acquired by the acquisition means perfectly or imperfectly and producing perfect or imperfect image data; and transmission means for transmitting the previously-executed image coding information acquired by the acquisition means when a picture type described in the previously-executed image coding information indicates an I-type and the coding phase of a macroblock of the coded image data agrees to the coding phase, so that the perfect or imperfect image data produced by the decoding means is coded perfectly or coded up to a midstep using the previously-executed image coding information.