Patent ID: 7162142

Claim:
A data playback apparatus for playing back digital data having a first data part which includes attribute information of the digital data, and a second data part which is subsequent to the first data part and in which compressively coded audio and video data are multiplexed, while receiving the digital data, said data playback apparatus comprising: a receiver for receiving the digital data; a buffer for storing the received digital data; an analyzer for receiving the first data part in the stored digital data and analyzing the first data part; a decoder for receiving the second data part in the stored digital data and decoding the compressively coded audio and video data together with separating the data; and an output unit for outputting the audio and video data decoded by said decoder, wherein said analyzer is operable to detect a data structure element having a predefined value from the first data part, and instruct said receiver to stop receiving the digital data when the data structure element is not detected.