METHOD AND APPARATUS OF BINARIZING INPUT SIGNAL, DISC DRIVER AND RECORDING MEDIUM

摘要

Provided are a method and apparatus of binarizing an input signal, which is capable of reliably correcting an offset of the input signal even when the input signal does not reach a reference level or has a single frequency, a disc driver and a recording medium. The binarizing method includes viterbi-decoding the input signal in order to obtain a viterbi-decoded signal; slicing the input signal based on a predetermined reference level in order to obtain a sliced signal; obtaining an offset of the input signal by low-pass filtering one of the viterbi-decoded signal and the sliced signal; and correcting the offset of the input signal using the obtained offset. The viterbi-decoded signal is a binary signal of the input signal.