RECEIVER FOR INFORMATION DATA TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an audio decoder that can reproduce audio data with high sound quality without sound interruption or the like by allowing a buffer memory not to cause underflow even on the occurrence of a missing PES packet due to deterioration depending on a state of a transmission channel. SOLUTION: Every time a TS separator 20 separates and extracts an audio PES, a time stamp comparator 45 compares a time stamp inserted to the head of the audio PES packet with a time stamp of one preceding audio PES packet to detect a time interval and a decoding control section 46 discriminates the presence of missing PES packet on the basis of this time internal. When the decoding control section 46 discriminates a missing PES packet, the decoding control section 46 gives supplement information to an audio decoding section 43 and the audio decoding section 43 generates audio data of the missing PES packet on the basis of a parameter generated by the past decoding processing and the audio data of the one preceding PES packet through supplement.