METHOD OF TRANSPORTING A CODE DATA USING AN ANALOGUE AUDIO SIGNAL DATA TRANSMISSION APPARATUS FOR PERFORMING THE SAME METHOD OF EXTRACTING A CODE DATA FROM AN ANALOGUE AUDIO SIGNAL AND DATA EXTRACTION APPARATUS FOR PERFORMING THE SAME

摘要

A code data transmission method using an analog sound signal, a data transmission device performing the code data, a method of extracting code data from an analog sound signal, and a data extraction device performing the method are disclosed. A method of transmitting code data using an analog acoustic signal includes generating a code sound wave corresponding to code data using a code generator, inserting a code sound wave into a digital sound signal using a mixing unit, Converting the digital acoustic signal into an analog acoustic signal, and outputting an analog acoustic signal using the transmitter. Code sound waves have a maximum decibel (dB) within a certain frequency range of an analog acoustic signal.