Patent ID: 8059511

Claim:
An information reproducing apparatus, comprising: a correcting device for correcting waveform distortion occurring in a read signal corresponding to at least a long mark, of a read signal read from a recording medium; and a processing device for performing a PRML (Partial Response Maximum Likelihood) process on the read signal in which the waveform distortion is corrected, wherein said correcting device corrects the waveform distortion occurring in the read signal corresponding to synchronization data, the synchronization data being used to read user data included in record data, the synchronization data being included in the record data, and said correcting device corrects the waveform distortion at least one of i) before a space which makes a pair with a mark which constitutes the synchronization data of the read signal, ii) after the space, and iii) at a position which satisfies periodicity of the synchronization data with a base point at the space.