US Patent 7403699 Optical disc apparatus

At the time of stopping the first reproduction process, a main controller makes a RAM store audio identification information corresponding to the kind of audio having been reproduced in the preceding reproduction process. At the time of restarting reproduction process, the main controller so controls a demultiplexer as to extract, from the compressed audio data read out by the optical pickup, compressed audio data having the same audio identification information that the RAM stores. Subsequently, the main controller so controls the demultiplexer as to send the extracted compressed audio data to the audio decoder.