Patent ID: 6194997
Filing Date: 2001-02-27
Classification: B60R,G07C

Abstract:
In a motor vehicle having an interior and an exterior, locks and doors, an antitheft system, comprising:a central control unit connected to the locks for locking and unlocking the locks;a trigger switch connected to said control unit, said trigger switch sensing closing and opening of one of the doors;at least one interior antenna connected to said control unit for transmitting a request signal into the interior;an exterior antenna connected to said control unit for transmitting a request signal into the exterior;a portable code transmitter for receiving the request signal and automatically transmitting back a response signal after previously receiving the request signal; andan interior monitoring device connected to said control unit, said interior monitoring device establishing if anyone is in the interior;said trigger switch activated by closing one of the doors to cause said control unit to activate said interior monitoring device and said at least one interior antenna and said exterior antenna to test for the presence of a person in the interior and to transmit the request signal into the interior and the exterior, and said control unit locking all of the door locks if no one is subsequently detected in the interior and exterior and no response signal is received.