| 摘要 |
In correcting errors in a received digital data signal having information data a pair of parity series P and Q determined by the information data and a CRC code determined by the information data and the parity series; a parity check operation is performed for checking errors in either the parity series P or Q of the received digital data signal, error correcting operation is performed for correcting erroneous data of either the P series or the Q series data on the basis of an error pointer generated by the CRC code included in the received digital data signal, and a sequence of the parity check and error correcting operations is established for interposing at least one parity check operation among a series of error correcting operations.
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