Signal Processing Device and Signal Processing Method

摘要

There is provided a signal processing apparatus and a signal processing method, which can simultaneously perform reduction in jitter components and reduction in error rate. A signal processing apparatus for processing a signal by a PRML method is provided with an A/D converter ( 4 ) for converting an analog signal into a digital signal; a first waveform equalizer ( 14 ) which is connected to the A/D converter ( 4 ), and amplifies a specific band of a signal to optimize data of a clock extraction system; a second waveform equalizer ( 15 ) which is connected to the A/D converter ( 4 ), and amplifies the specific band of the signal and performs waveform equalization to optimize data of a data processing system; a timing recovery logic circuit ( 11 ) which is connected to the first waveform equalizer ( 14 ), and extracts a reproduction clock; and a decoder ( 16 ) which is connected to the second waveform equalizer ( 15 ), and decodes data.