APPARATUS FOR DETECTING TERMINATION IN CELLULAR PHONE AND WIRELESS HANDSFREE DEVICE USING THE SAME

摘要

PURPOSE: An apparatus for detecting termination in a cellular phone and a wireless handsfree device using the same are provided to detect the termination without directly connecting with the cellular phone by composing a microphone and a piezoelectric element and sensing a bell sound and a vibration of the cellular phone. CONSTITUTION: A termination sensor unit(20) senses a bell sound or a vibration generated in a termination state according to a mode of a cellular phone(1). A signal amplifying unit(30) amplifies a signal of the termination sensor unit(20) at a uniform level. An output unit(40) transmits the signal amplified by the signal amplifying unit(30) to other devices. The termination sensor unit(20) has a microphone(21) for sensing the bell sound of the cellular phone(1) and a piezoelectric element(22) for sensing the vibration.