Patent ID: 7181229
Filing Date: 2007-02-20
Classification: H04M,H04W

Abstract:
1. A device for disabling cellphone use in the presence of a first or a second condition, and enabling its normal functioning upon removal of said conditions, said first condition being that of a signal generated from a vehicle in motion, said second condition being that of a signal generated from a restricted area, said device comprising: (i) a signal generating circuit adapted to generate a polarity specific signal corresponding to said first or second condition; (ii) a signal detection and processing circuit provided within said cellphone for receiving and processing the signal from said signal generating circuit, said signal detection and processing circuit coupled to the signal generating circuit through a first capacitive coupling to the signal detection and processing circuit, and a second capacitive coupling provided in the cellphone and linked to the signal detection and processing circuit; (iii) an OK switch disabling circuit connected to said signal detection and processing circuit, said OK switch disabling circuit connected to the OK switch of the cellphone and disabling it in the presence of a signal corresponding to said first condition to said signal at an input to the signal detection and processing circuit; (iv) a link and control circuit connected to said OK switch disabling circuit for terminating a call if a cellphone in an operating mode is passed on to a driver by another passenger in the presence of said first condition as well as to said signal detection and processing circuit; (v) a call end circuit connected to said link and control circuit and also connected to the call end switch of the cellphone, and adapted to perform its function in the presence of a signal corresponding to the first condition at the input of said signal detection and processing circuit, when said OK switch is also disabled; (vi) said link and control circuit also connected to said signal detection and processing circuit and adapted to initiate the function of the call end circuit in the presence of said first condition; and (vii) a cellphone switching off circuit, linked to said signal detection and processing circuit, for switching off the cellphone and disabling its ON function in the presence of said second condition at the input to the signal detection and processing circuit.