ADDED INFORMATION INSERTION APPARATUS AND METHOD IN BROADCASTING SYSTEM

摘要

An additional information insertion apparatus for a broadcasting system includes: a broadcasting signal transmitter (510) configured to transmit a broadcasting signal; a data extractor (540) configured to extract a modulated signal by dividing the modulated signal from a modulator of the broadcasting signal transmitter (510); an additional data generator (530) configured to extract synchronization of the broadcasting signal from the extracted broadcasting signal, modulate the additional information based on the extracted synchronization, and generate a level of the modulated additional information to be a smaller level than a signal level of the modulated signal as much as a predetermined value; and a data synthesizer (550) configured to insert the additional data from the data generator into the modulated broadcasting signal.