Error detecting device for viterbi decoder

Details Error detecting device for viterbi decoder Error detecting device for viterbi decoder

1997-12-29

2000-05-02

Baker, Stephen M.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

714758, 714788, H03M 1300, H03M 1312

Patent

active

060585013

ABSTRACT:
An error detecting device of received digital data solves a problem for detecting errors in a conventional device in that error detection following the Viterbi decoding performed on most important bits cannot detect errors even if they include a considerable amount of errors, and that odd sounds result from decoding of voice data, for example. The present error detecting device includes a Viterbi decoder for carrying out the Viterbi decoding of the received digital data, an error number decision portion for comparing a threshold value with the number of errors of the path metric obtained by the Viterbi decoding, and a voice decoder for decoding the received digital data, on which the error number decision portion decides that the number of errors is below the threshold value.

REFERENCES:
patent: 5422894 (1995-06-01), Abe et al.
patent: 5509020 (1996-04-01), Iwakiri et al.
patent: 5737365 (1998-04-01), Gilbert et al.
patent: 5838697 (1998-11-01), Abe
patent: 5878098 (1999-03-01), Wang et al.

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