Apparatus simultaneously transmitting audio and control output signals using audio jack in smartphones and the method thereof

摘要

The present invention relates to a control method of a smartphone which combines control signals modulated to an audio signal in a smartphone and transmits the combined control signal to an external signal separating device through an audio terminal and separates the two signals into an audio signal and a control signal, To an apparatus for simultaneously transmitting an audio signal and a control signal using an audio terminal for transmitting a signal and a method using the same.