DEVICE FOR DISPLAYING INCOMING OF CELLULAR PHONE

摘要

PURPOSE: A device for displaying incoming of a cellular phone is provided to visually display incoming of the cellular phone, by driving a Laser Diode(LD) blinkingly with rectifying a filter output gained by combining outside antenna of the cellular phone with a low pass filter for microwaves. CONSTITUTION: A device for visually displaying incoming of a cellular phone comprises an insulating board(21), a low pass filter for microwaves(22), a rectification diode(23) and a luminescent diode(24). The insulating board(21) is combined with outside core of an antenna of the cellular phone. The low pass filter for microwaves(22) outputs low frequency signals by filtering induced microwave signals with gaining induced electromotive force by electromagnetic waves being received to the antenna as comprised as a challenge pattern in the insulating board. The rectification diode(23) outputs half wave rectification signals by rectifying the low frequency signals with half waves. The luminescent diode(24) is blinkingly driven according to the half wave rectification signals.