Patent ID: 7817867

Claim:
An integrated circuit that decodes audio data to be decoded and picture data to be decoded, said integrated circuit comprising: an audio processing unit configured to decode the audio data to be decoded; and a picture decoding unit configured to decode the picture data to be decoded, wherein said picture decoding unit is configured (i) to determine, using (a) reference pictures and (b) commands for allowing assignment of reference indices to at least one reference picture in the reference pictures, correspondences between the reference indices and the reference pictures, (ii) when (a) at least two reference indices are assigned to at least one reference picture that is referred to by the picture data to be decoded and is included in the reference pictures, (b) a first block to be decoded in the picture data to be decoded refers to a first reference block in one of the reference pictures corresponding to one of the two reference indices, and (c) a second block to be decoded in the picture data to be decoded refers to a second reference block in one of the reference pictures corresponding to the other one of the two reference indices, to generate a predictive pixel value of the picture data to be decoded by (a) generating a predictive pixel value of the first block to be decoded, using a first weighting coefficient set corresponding to the one of the two reference indices and a pixel value of the first reference block, and (b) generating a predictive pixel value of the second block to be decoded, using a second weighting coefficient set corresponding to the other one of the two reference indices and a pixel value of the second reference block, and (iii) to decode the picture data to be decoded, using the generated predictive pixel value of the picture data to be decoded.