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Patent

Error correcting method

TLDR
In this paper, the decoding of the first stage is made to the 2nd error correction block, and the PCM data series of a plurality of channels and the 1st check word series are delayed for the different time from channel.
Abstract
PURPOSE: To prevent the mistake of the decoding error detection at the next stage, by adding the pointer indicating the decoding error of the 1st stage and discriminating the number of pointers within one block at the decoding of the next stage. CONSTITUTION: The decoding of the 1st stage is made to the 2nd error correction block, and the PCM data series of a plurality of channels and the 1st check word series are delayed for the different time from channel. After that, the decoding of the next stage is made to the 1st error correction block, and at the decoding of the 1st stage, the pointer representing the presence of error for every word is added according to the result of decoding relating to the 2nd error correction block. At the decoding of the next stage, if the number of pointers representing the error within the 1st error correction block exceeds a given number, when the result of discrimination for absence of errors is obtained through the decoding at the next stage, the pointer added at the decoding of the 1st stage is remained the same, allowing to avoid the missing of error detection. COPYRIGHT: (C)1982,JPO&Japio

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Citations
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References
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