Patent ID: 8675729

Claim:
A digital signal processor which receives a multiplexed signal in which a coded audio signal and a coded picture signal are multiplexed, the digital signal processor comprising: a memory; and a processor coupled to the memory that executes instructions to: separate the coded audio signal and the coded picture signal from the multiplexed signal; decode the coded audio signal; and decode the coded picture signal, wherein said decoding of the coded picture signal includes (a) obtaining a picture number from the coded picture signal; (b) judging whether all pictures release information indicating that all pictures stored in the memory are to be released is coded in the coded picture signal; and if said judging gives a positive result: (c) extracting the all pictures release information from the coded picture signal; (d) decoding the coded picture signal to obtain a decoded picture; (e) storing the decoded picture into the memory; (f) releasing all pictures, which are stored in the memory before said extracting of the all pictures release information; and (g) initializing the obtained picture number after said decoding of the coded picture signal by assigning a new picture number of “0” to the decoded picture including the all pictures release information after the all pictures release information has been extracted, to obtain continuous picture numbers starting from the picture number of the new decoded picture which is to be decoded after the decoded picture including the all pictures release information.