Patent ID: 9589591
Date: 2017-03-07
CPC Classifications: G11B,H03M

Claim:
1. A signal processing device, comprising: a signal coincidence detection portion configured to detect samples in which values, obtained based on a number of times of appearance of bits in a first modulated signal and a second modulated signal, coincide with each other over a plurality of samples within a set period, wherein the first modulated signal is a ΣΔ modulated input signal that is delayed and the second modulated signal is the ΣΔ modulated input signal that is again subjected to the ΣΔ modulation; a signal changeover portion configured to switch between the first modulated signal and the second modulated signal to output the first modulated signal or the second modulated signal; and a switching control portion configured to control the switch between the first modulated signal and the second modulated signal based on the detected samples in which the values, obtained by the signal coincidence detection portion, coincide with each other.