MULTIPLEX SIGNAL DECODING

摘要

A signal processing method and apparatus are described for demultiplexing selected components (especially audio signals) from a multiplexed data stream. Each of the desired channel components has a unique identification code detected by a processor (18) parsing the contents of a received data buffer (14) between the disc reader (12) and the demultiplexer (22). The demultiplexer (22) is set up to output received data channel streams having a specific identification code different from any of those assigned to the channel streams originally. Prior to demultiplexing, the identification code for a desired one of the channel streams is altered by the processor (18) to the specific identification code as it passes through the buffer (14) in order to avoid re-setting the demultiplexer.