Patent ID: 7231268

Claim:
A method of selecting audio channels of an A/V data stream comprising a plurality of programs, each program comprising at least two kinds of audio data streams, each audio data stream comprising at least two sub-audio data streams which are not repeated and have a series of channel IDs according to a predetermined order of precedence, the method comprising: (a) when one of the programs is changed to another one of the programs during reproduction, searching whether there is a sub-audio data stream having a channel ID which is the same as a user selected channel ID assigned to the sub-audio data stream of the program which was being reproduced before the program was changed, in the another program; and (b) when there is the sub-audio data stream having a channel ID which is the same as the user selected channel ID assigned to the sub-audio data stream of the program which was being reproduced before the program was changed, selecting the sub-audio data stream having the same channel ID of the another program.