| 摘要 |
An apparatus and method for inserting and extracting value added data in a TS (Transport Stream)-based MPEG-2 system is provided to improve the efficiency of the TS-based MPEG-2 system. A transport packet of a transport stream for transmission is checked to determine if it includes a stuffing byte field, on the basis of a header of the transport packet. If the transport packet includes a stuffing byte field, the value added data is inserted into the stuffing byte field, and the resulting transport packet is outputted. On the other hand, a transport packet of a received transport stream is checked to determine if it includes a stuffing byte field, on the basis of a header of the transport packet. If the transport packet includes a stuffing byte field, the value added data inserted in the stuffing byte field is extracted from the transport packet. <IMAGE>
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