Reproducing apparatus for optical disc recorded in high density

摘要

A resampling DPLL (5) estimates a signal outputted from a pickup (1) through an AGC (4) and outputs a signal of the estimation result. A transversal filter in an adaptive equalizing circuit (6) equalizes in waveform the signal outputted from the resampling DPLL (5). An error signal is detected from the equalized waveform outputted from the transversal filter. The error signal is fed back to the transversal filter so as to control the transversal filter such that the error signal becomes minimum.