Patent ID: 7149260

Claim:
A carrier recovery apparatus of a Vestigial Sideband (VSB) broadcasting signal having an I-signal and a Q-signal, comprising: a first low pass filter (LPF) calculating a carrier of the VSB broadcasting signal changing in accordance with a frequency offset of the VSB broadcasting signal by using a pilot tone included in the I-signal of the VSB broadcasting signal; a limiter limiting a size of the carrier calculated by the first LPF; a multiplier multiplying the limited size of the carrier from the limiter by the Q-signal of the VSB broadcasting signal to generate a product; a second LPF extracting a DC-property signal corresponding to a frequency error of the carrier from the product from the multiplier; a numerically-controlled oscillator (NCO) generating a complex carrier corresponding to the DC-property signal extracted from the second LPF; and a frequency error providing unit storing the DC-property signal extracted from the second LPF, and when the pilot tone is distorted by a damaged pilot of the I-signal, providing the NCO with the stored DC-property signal.