Excavating
Patent
1995-09-05
1997-06-03
Gordon, Paul P.
Excavating
375240, 395 229, H03M 1300
Patent
active
056362315
ABSTRACT:
Error detection and correction of a received message, such as a digitized voice message is achieved by generating (318) interpolated vectors for each error vector corresponding to a codebook index in a sequence of codebook indexes representing parameters of portions of the message. A plurality of error corrected candidate vectors for the vector corresponding to the codebook index in error, are generated (322,324,326) by flipping one bit in a sequence of bits representing the codebook index in error. The error corrected candidate vector which has a minimal difference from its corresponding interpolated vector is used (338) to replace the error vector. In the case of digital voice, the vectors are spectral vectors which represent spectral information for a time sample of a voice message. An ordering property of vector components is exploited to detect errors in a received codebook index without parity bits.
REFERENCES:
patent: 4873520 (1989-10-01), Fisch et al.
patent: 4885577 (1989-12-01), Nelson
patent: 4922508 (1990-05-01), Moriya
patent: 4965569 (1990-10-01), Bennett et al.
patent: 5384891 (1995-01-01), Asakawa et al.
patent: 5481627 (1996-01-01), Kim
patent: 5511136 (1996-04-01), Kim
Huang Jian-Cheng
Li Xiaojun
Simpson Floyd
Brown Thomas E.
Floam D. Andrew
Gordon Paul P.
Motorola Inc.
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