Digital signal reproducing apparatus with an amplitude limit sam

Details Digital signal reproducing apparatus with an amplitude limit sam Digital signal reproducing apparatus with an amplitude limit sam

1996-02-13

1997-07-22

Huber, P. W.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 47, 369 50, 369124, 360 32, G11B 509, G11B 700

Patent

active

056509880

ABSTRACT:
It is an object to provide a digital signal reproducing apparatus which can correctly reproduce a digital signal by suppressing a deterioration in decoding performance of a Viterbi decoding even when an asymmetry occurs in an information digital signal read from an optical disc. An amplitude-limited sample value is obtained by limiting an amplitude of a sample value obtained by sampling the read signal up to a predetermined amplitude limit value. The amplitude limit sample values are Viterbi decoded on the basis of a plurality of prediction samples including prediction sample whose values are respectively equal to the predetermined upper and lower amplitude limit values.

REFERENCES:
patent: 5517476 (1996-05-01), Hayashi

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