High-speed viterbi decoder

Details High-speed viterbi decoder High-speed viterbi decoder

1996-06-10

1998-11-10

Baker, Stephen M.

Excavating

360 39, G11B 2018

Patent

active

058355103

ABSTRACT:
It is an object to provide a Viterbi decoder which can execute a high-speed decoding process. An error value between a sample value obtained by sampling a read signal read from a recording medium and each of prediction values is obtained as a branch metric value. One of the branch metric values and a first path metric value are added, thereby obtaining a first addition value. Another one of the branch metric values and a second path metric value are added, thereby obtaining a second addition value. The first and second path metric values are compared. On the basis of the comparison result, one of the first and second addition values is selected and used as a first path metric value.

REFERENCES:
patent: 4583078 (1986-04-01), Shenoy et al.
patent: 5650988 (1997-07-01), Kuribayashi
patent: 5651032 (1997-07-01), Okita

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