Patent ID: 7424054

Claim:
A carrier recovery apparatus for use in a high-definition TV receiver, comprising: an error compensating unit that is configured to combine a complex input signal with a frequency signal to generate a complex output signal, wherein the complex output signal includes an error reference signal, wherein the error reference signal comprises at least one PN signal in a field synchronization signal of the complex input signal, and wherein the PN signal is one of a plurality of PN signals; a switching unit that is configured to output the complex output signal selectively between a first output path and a second output path based on a switch control signal; a switch control signal generator that is configured to generate the switch control signal based on the presence or absence of a pilot signal in the complex output signal; a second error detecting unit that is configured to receive the complex output signal from the first output path of the switching unit, and is configured to generate the frequency signal to compensate for an error in the complex output signal based on the pilot signal in the complex output signal; and a first error detecting unit that is configured to receive the complex output signal from the second output path of the switching unit, and is configured to determine location of the PN signal of the error reference signal in the complex output signal based on a real part of the complex output signal, and is configured to generate the frequency signal based on the determined location of the PN signal of the error reference signal in the complex output signal.