Decoding apparatus, decoding method, data-receiving...

Details Decoding apparatus, decoding method, data-receiving... Decoding apparatus, decoding method, data-receiving...

2005-04-26

2005-04-26

Chase, Shelly A (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

06886128

ABSTRACT:
A decoding apparatus, decoding method, data-receiving apparatus, and a data-receiving method for performing a maximum-likelihood decoding process based on a Viterbi algorithm on a data train completing a convolution-encoding process. The apparatus includes a computation device for performing a trellis computation for decoding a data train completing the convolution-encoding process. The decoding apparatus further includes a control device for controlling the trellis computation to be carried out by the computation device with processing timings in processing units each corresponding to a process carried out on n bits of pre-encoding data, in which each of the processing units is parallel processing carried out on computation results obtained for 2nstates with one of the processing timings immediately preceding a present one of the processing timings to find the computation results with the present processing timing for the 2nstates.

REFERENCES:
patent: 6259749 (2001-07-01), Andoh
patent: 6381727 (2002-04-01), Ikeda
patent: 6637004 (2003-10-01), Mizuno et al.

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