Patent ID: 6476517
Filing Date: 2002-11-05
Classification: B60R,G07C

Abstract:
An automatically controlled door-locking system for automatically locking at least one door of a vehicle, which includes a vehicle-operator's door provided for an operator of the vehicle, said door-locking system comprising:a power-operated locking device including a power source, and an actuator operated by said power source for selectively locking and unlocking said at least one door placed in a closed position thereof; a symptom detecting device operable to detect a symptom indicating that the operator of the vehicle has an intention of getting off the vehicle; a portable unit to be carried by said operator; a first communication device operable to communicate with said portable unit while said portable unit is located within a predetermined communication area, said first communication device including a first identifier-signal requesting device and a first signal-receiving device, said first identifier-signal requesting device being operable, upon detection of said symptom by said symptom detecting device, to transmit to said portable unit a request signal requesting said portable unit to transmit back to said first signal-receiving device an identifier signal representative of an identifier identifying said portable unit; and a locking-device controller, operable when said identifier represented by said identifier signal received by said first signal-receiving device matches an identifier identifying said vehicle, to operate said power-operated locking device for locking said at least one door after said vehicle-operator's door is closed.