Patent ID: 8098695
Filing Date: 2012-01-17
Classification: G11B,H04N

Abstract:
1. A multiplexed audio data decoder apparatus, for inputting a group of packets, each being formed by packetizing audio data sequences which are compressed and encoded and by multiplexing a plurality of those sequences, and for selectively decoding one audio data sequence which is designated by a user, the multiplexed audio data decoder comprising: a demultiplexer for extracting the one audio data sequence which is designated by the user from said group of packets depending upon a property or attribute information of each packet, and further for extracting a method of compression and encoding which is applied for compressing the audio data sequence from a header information of each audio data sequence; a memory in which decoding program codes are accumulated including decoding algorithms corresponding to said method of compression and encoding; a digital signal processor for decoding the compressed audio data sequence in accordance with said decoding program codes, sequentially; and a controller for receiving a method of compression and encoding from said demultiplexer, for detecting whether said method of compression and encoding changes to another method of compression and encoding or not, and if said method of compression and encoding changes, for downloading the decoding program code corresponding to said another method of compression and encoding, to said memory from outside of said memory, wherein said digital signal processor begins decoding processing by using the decoding program code which is downloaded to said memory.