APPARATUS AND METHOD FOR RECEIVING DATA THROUGH NON-AUDIBLE FREQUENCY

摘要

Disclosed are an apparatus and a method for receiving data through non-audible frequency. The present invention is to transmit data with non-audible frequency range, to obtain data from a voice signal transmitted though the non-audible frequency range, to supply data including content approach information to audio data with the non-audible frequency range. According to the present invention, various services are provided without the active action of a user because data is transmitted by using non-audible sound. Because various kinds of information are transmitted by using non-audible sound, various additional services are provided for the user watching/listening the content. [Reference numerals] (210) Sound receiving unit;(230) Noise analysis unit;(250) Data receiving unit;(270) Demodulation unit