| 摘要 |
Errors in data retrieved from a storage medium are corrected by retrieving a plurality of data blocks and a plurality of redundancy blocks associated with the plurality of data blocks from the storage medium. One or more data blocks retrieved from the storage medium having errors are identified and removed. When the number of data blocks identified as having errors is less than the number of retrieved redundancy blocks, one or more excess redundancy blocks are removed, and one or more retained redundancy blocks are kept from the retrieved redundancy blocks. One or more new redundancy blocks are generated based on the retrieved data blocks. One or more residual blocks are generated based on the one or more new redundancy blocks and the one or more retained redundancy blocks. One or more data blocks identified as having errors are corrected using the generated one or more residual blocks.
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