Method and apparatus for error correction

Details Method and apparatus for error correction Method and apparatus for error correction

1997-04-10

1999-10-19

Chung, Phung M.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

714786, 714746, G06F 1110, H03M 1312

Patent

active

059682019

ABSTRACT:
Received data representing voice information is subjected to Viterbi decoding to correct an error in the received data. Thereby, the received data is decoded into second data. A path metric is calculated to determine the second data during the Viterbi decoding. A decision is made as to whether or not at least one error is present in the second data by referring to a cyclic redundancy check code in the second data. The second data is discarded when it is decided that at least one error is present in the second data. A decision is made as to whether or not the calculated path metric exceeds a threshold value. The second data is discarded when it is decided that the path metric exceeds the threshold value. The second data is converted into sound when it is decided that at least one error is not present in the second data and that the path metric does not exceed the threshold value.

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