| 摘要 |
PCT No. PCT/JP93/01054 Sec. 371 Date Nov. 18, 1994 Sec. 102(e) Date Nov. 18, 1994 PCT Filed Dec. 22, 1993 PCT Pub. No. WO94/15406 PCT Pub. Date Jul. 7, 1994An error correction method comprises the steps of loading a value stored in a syndrome register (15) to syndrome registers (16) to (18) if error is a single-error after syndrome registers [S0 to S3] (15) to (18) had finished calculating syndromes and loading values stored in the syndrome registers (16) to (18) to data registers [R1 to R3] (22) to (24), repeating multiplications of powers of alpha , alpha 2, alpha 3 by using the syndrome registers (15) to (18) until coincidence detecting circuits (25) to (28) detect that the values of the syndrome registers (15) to (18) and the values of the data registers (22) to (24) are agreed, energizing a counter (29) in synchronism with the multiplications of powers, setting a count value obtained when it is detected that the values of the syndrome registers and the values of the data registers are agreed to a data location and effecting error correction based on the value of the syndrome register [S0] (15) used as an error amount.
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