| 摘要 |
An error correction device, an error correction program and an error correction method can reduce the processing time necessary for the process of correcting errors that involve erasure in a reception word by using a software and hardware properly and effectively. As an error-correcting circuit 3a for correcting errors that do not involve erasure receives a reception word that involves erasure from an RDC 2, an erasure information holding section 3a1 holds the erasure information and a syndrome generating section 3a2 generates a syndrome from the reception word so that a erasure judging section 3a3 transmits the erasure information and the syndrome to an MPU 4. In the MPU 4, an erasure error value computing section 4a3 and erasure correcting section 4a4 correct only erasure and store the reception word that does not involve erasure in an RAM 3b. The reception word from the RAM 3b is input again to the error-correcting circuit 3a for correcting errors that do not involve erasure by way of a data bus 6 and a switch 5. The erasure judging section 3a3 judges the reception word as one that does not involve erasure and has Chien search section 3a5 and an error-correcting section 3a6 correct errors.
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