Patent ID: 8032285

Claim:
A method with a memory function for controlling the closure of a vehicle door mounted to a door frame, comprising the steps of: emitting a first detecting signal when the vehicle door is open for detecting and recording a first environmental status outside the vehicle door; emitting a second detecting signal when the door is to be closed for detecting whether any obstacle exists at a place directly under a door frame top, and allowing the vehicle door to be closed if the second detecting signal detects no obstacle or forbidding the vehicle door to be closed if an obstacle is detected; emitting a third detecting signal for detecting and recording a second environmental status outside the vehicle door when the second detecting signal indicates that the vehicle door is allowed to be closed; and comparing the first environmental status outside the vehicle door as detected by the first detecting signal with the second environmental status outside the vehicle door as detected by the third detecting signal, and forbidding the door to close if they are obviously different.