A METHOD AND A APPARATUS OF DETECTING EAR-MIC HOOK SIGNAL FOR MOBILE PHONE

摘要

The present invention provides an accurate input of a hook signal using a data port instead of a limited gigaio port of a portable terminal, and includes a bias unit configured to perform a DC voltage bias processing of a hook signal applied from an ear microphone; An analog unit for converting an analog hook signal applied from a bias unit into a digital signal; A digital unit for digitally processing the digital hook signal applied from the analog unit and repeatedly checking whether the signal is high or low level; It is characterized by the configuration consisting of a control unit for analyzing the signal applied from the digital unit to the data port to determine the hook state and control the communication progress, and increases the number of external signal input and output ports of the control unit, the hook signal to the digital signal processing There is an effect of detecting accurately.