Patent ID: 8249420

Claim:
A reproducing device for playing back data from a recording medium, comprising: a plurality of play back circuits for reading first stream data and second stream data from a recording medium, each of the first stream data and the second stream data having a plurality of fixed-length packets, and each fixed-length packet having a timestamp which indicates a transmit timing in units of the fixed-length packet, where the first stream data includes first audio data, first subtitle data, and first graphics data, and where the second stream data includes second audio data, second subtitle data and second graphics data; a first timing adjustment circuit for adjusting a transmit timing of the first stream data according to the timestamp; a second timing adjustment circuit for adjusting a transmit timing of the second stream data according to the timestamp; a plurality of selection circuits for conducting plural selections, including: a first selection to select between the adjusted first audio data and the adjusted second audio data, a second selection to select between the adjusted first subtitle data and the adjusted second subtitle data, and a third selection to select between the adjusted first graphics data and the adjusted second graphics data, wherein the first, second and third selections are able to perform selection independently from each other; a plurality of output circuits for outputting the audio data, the subtitle data and the graphics data selected by the selection circuits; wherein the first stream data and the second stream data are reproduced synchronously; and wherein the subtitle data and the graphics data from the selection circuits are superimposed together with each other and outputted.