| 摘要 |
A unique pattern detection unit conducts a search for a unique pattern in a forward direction of a program stream, and detects a pseudo unique pattern PUP included in encoded data. A header information extraction unit sets extraction starting position information indicating a head of pseudo header information following the extracted pseudo unique pattern UP0 to an extraction starting position storing unit. The header information extraction unit extracts pseudo header information HD0 following the pseudo unique pattern PUP, and an error checking unit conducts error check on the pseudo header information PHD. If any error is detected from the pseudo header information PHD, the unique pattern detection unit resumes the search for the unique pattern from the position indicated by the extraction starting position information stored in the extraction starting position storing unit.
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