| 摘要 |
PROBLEM TO BE SOLVED: To provide an error correction method and an error correcting circuit which are equipped with high correction performance. SOLUTION: The error correction method includes a synchronization pattern detecting step, a demodulation step, a reverse demodulation step, an error pattern estimating step, and a correcting step. The synchronization pattern is detected based on channel bit strings including redundancy which can be used for error correction. In the demodulation step, channel bit strings up to the second synchronization pattern is demodulated based on the first synchronization pattern, and the first demodulation data string is output. In the reverse demodulation step, channel bit strings up to the first synchronization pattern is demodulated based on the second synchronization pattern, and the second demodulation data string is output. In the error pattern estimation step, an estimation error pattern is output. In the correcting step, an error pattern is corrected based on the estimation error pattern and a corrected data string is output. COPYRIGHT: (C)2009,JPO&INPIT
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