OPTICAL DISK REPRODUCING DEVICE AND OPTICAL DISK REPRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical disk reproducing device which is capable of setting an optimum PR (Partial Response) class for the comprehensive frequency characteristic of an optical disk including recording characteristics and reproducing characteristics. SOLUTION: In the optical disk reproducing device which performs reproduction of an optical disk using a PRML (Partial Response and Maximum Likelihood) method and comprises a Viterbi decoding unit which generates binary data using maximum likelihood decoding processing from multi-value reproduced data obtained by sampling a reproduced signal from the optical disk, the Viterbi decoding unit generates the binary data on the basis of the optimum PR class determined by the multi-value reproduced data and the binary data in a predetermined determination period. COPYRIGHT: (C)2009,JPO&INPIT