Method and apparatus for transmitting/receiving broadcasting-communication data

A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

• a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;
• a first demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;
• an original data generator configured to receive the baseband mixed signals and generate original data;
• a decider configured to generate baseband original signals by removing components other than the baseband original signals from the baseband mixed signals;
• a modulator configured to receive the baseband original signals and generate original signals of a predetermined band;
• a subtractor configured to subtract the original signals of the predetermined band from the mixed signals of the predetermined band to thereby generate additional signals of a predetermined band;
• a second demodulator configured to receive the additional signals of the predetermined band and generate baseband additional signals;
• and
• an additional data generator configured to receive the baseband additional signals and generate additional data.

A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

• a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;
• a demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;
• an original data generator configured to receive the baseband mixed signals and generate original data;
• an original signal generator configured to receive the original data and generate baseband original signals;
• a subtractor configured to subtract the baseband original signals from the baseband mixed signals to thereby generate baseband additional signals;
• and
• an additional data generator configured to receive the baseband additional signals and generate additional data.

A broadcasting-communication data receiving apparatus for receiving mixed signals including original signals and additional signals, comprising:

• a receiver configured to receive the mixed signals and output mixed signals of a predetermined band;
• a demodulator configured to receive the mixed signals of the predetermined band and generate baseband mixed signals;
• an original data generator configured to receive the baseband mixed signals and generate original data;
• a decider configured to generate baseband original signals by removing components other than the baseband original signals from the baseband mixed signals;
• a subtractor configured to subtract the baseband original signals from the baseband mixed signals to thereby generate baseband additional signals;
• and
• an additional data generator configured to receive the baseband additional signals and generate additional data.

A broadcasting-communication data receiving method for receiving mixed signals including original signals and additional signals, comprising:

• receiving the mixed signals and outputting mixed signals of a predetermined band;
• receiving the mixed signals of the predetermined band and generating baseband mixed signals;
• receiving the baseband mixed signals and generating original data;
• receiving the original data and generating baseband original signals;
• receiving the baseband original signals and generating original signals of a predetermined band;
• subtracting the original signals of the predetermined band from the mixed signals of the predetermined band to thereby generate additional signals of a predetermined band;
• receiving the additional signals of the predetermined band and generating baseband additional signals;
• and
• receiving the baseband additional signals and generating additional data.