Digital broadcast demodulator and digital broadcast demodulation method for suppressing degradation of reception characteristics

摘要

A digital broadcast demodulator receives a tuner signal output from a tuner and carries out demodulation processing on the tuner signal by using an internal clock signal that is synchronized with a reference signal. The digital broadcast demodulator has an internal clock-signal generator and an internal clock frequency controller. The internal clock-signal generator generates the internal clock signal, and the internal clock frequency controller controls a frequency of the internal clock signal in accordance with a reception channel.