Patent ID: 8233780

Claim:
A reproducing apparatus, comprising: a mainstream data reproducing unit configured to reproduce mainstream data using a mainstream arrival time clock which is configured to be used to depacketize the mainstream data and a mainstream system time clock which is configured to be used to decode the depacketized mainstream data; and an audio data reproducing unit configured to reproduce audio data corresponding to the mainstream data, using an audio arrival time clock which is configured to be used to depacketize the audio data and is independent of the mainstream arrival time clock and an audio system time clock which is configured to be used to decode the depacketized audio data and is independent of the mainstream system time clock, wherein the mainstream data reproducing unit and the audio data reproducing unit are independent such that the mainstream data is changeable by a user, while not interrupting the audio presentation, and wherein the mainstream arrival time clock is initialized based on an arrival time stamp value of a first packet of the mainstream data, and the audio arrival time clock is initialized based on an arrival time stamp value of a first packet of the audio data.