| 摘要 |
<p>When very important data are contained in n of (n+k+m+$(1,3)$) symbols which are being subjected to error-correction encoding, and when (n+k) symbols are being subjected to individual error detection or error-correction encoding, a flag indicating the number of erroneous symbols in the (n+k) symbols is first generated and is employed for the error correction of (n+k+m+$(1,3)$) symbols in a subsequent stage. Alternatively, error magnitudes and error locations are first detected for the (n+k+m+$(1,3)$) symbols, and the result of the inspection is employed for checking the error correction of the (n+k) symbols. In addition, a flag indicating the number of erroneous symbols in the (n+k) symbols is generated and is employed for the error correction of the (n+k+m+$(1,3)$) symbols in the subsequent stage. </p> |
