| 摘要 |
PROBLEM TO BE SOLVED: To provide a data reproducing device and a data reproducing method which can easily improve the reliability of reproduced data. SOLUTION: In the data reproducing device and the data reproducing method which binarize an alternate current(AC) signal obtained by reading data recorded on a recording medium by using the center of amplitude of the AC signal as a slice level, a direct current(DC) component is removed from the AC signal. The signal processing of a prescribed second signal characteristic which offsets a first signal characteristic given to the AC signal when the DC component is removed from the AC signal, is applied to the AC signal from which the DC component is removed. Either of the AC signal from which the DC component is removed and the AC signal to which the signal processing is performed, is binarized selectively. The AC signal is monitored, and the AC signal to which the signal processing is performed only when the signal level of the AC signal fluctuated more than a prescribed threshold, is binarized.
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