CPC G11B 20/10212 (2013.01) [G11B 7/005 (2013.01); G11B 20/1833 (2013.01)] | 12 Claims |
1. A signal processing device comprising:
an equalization unit configured to perform partial response (PR) equalization of a reproduced signal of multilevel codes of 3<=ML; and
a decoding unit configured to perform maximum likelihood decoding of an equalized signal obtained through the PR equalization,
wherein the decoding unit limits a trellis state and a branch by an encoding rule of the multilevel codes and performs the maximum likelihood decoding.
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