| 摘要 |
A device for detecting and correcting errors in error correction coded (ECC) data blocks that are read sequentially from a DVD medium is disclosed. Each ECC data block is defined as a two dimensional block of a plurality of columns and rows. Each of the ECC data blocks is read from the DVD medium sequentially in rows. The device includes row correction circuitry, a buffer, column correction circuitry, and repeat correction circuitry. The row correction circuitry is configured to sequentially receive the rows of an ECC data block for detecting and correcting up to a first predetermined number of errors in each of the received rows. The buffer is coupled to the row correction circuitry for receiving the error corrected rows of the ECC data block as a receiving buffer. The buffer also stores the ECC data block as a correction buffer when all the rows of the ECC data block have received. The column correction circuitry is coupled to the row correction circuitry and the buffer to sequentially receive the row error corrected rows of the ECC data block for detecting the uncorrected errors. The column correction circuitry is also configured to correct the uncorrected errors in the columns of the ECC data block that is stored in the correction buffer. The repeat correction circuitry is coupled to the buffer for detecting and correcting the remaining uncorrected errors in the correction buffer.
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