| 摘要 |
A demodulator having an improved reliability of the decoding of a TMCC signal is used for digital broadcasting receivers for receiving digital broadcasting by layered transmission system. A pseudo-pattern generator ( 8 ) generates fixed pseudo-data which involves no error with respect to a main signal after a TMCC signal and maintains the convolution relationship, and inserts the pseudo-data between the TMCC signal and the main signal through a selector ( 6 B) and a selector ( 6 ), thereby conducting Viterbi decoding.
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