Patent ID: 7868735

Claim:
A vehicle door control system comprising a vehicle-side unit and a hand-held device for controlling vehicle doors employed in a vehicle in accordance with a result of collation of an ID code, which is conveyed by a response signal transmitted by the hand-held device in response to a request signal transmitted by the vehicle-side unit, with an ID code registered in the vehicle-side unit, wherein the vehicle-side unit includes: a lock-state control section for controlling a lock/unlock state of at least one vehicle door; an automatic door opening/closing section for automatically carrying out operations to open and close the at least one vehicle door; and an operation detection section for detecting a predetermined operation carried out by a holder of the hand-held device on any one of the vehicle doors, and wherein, when the result of the collation of the ID codes is an OK and the operation detection section detects the predetermined operation, the lock-state control section unlocks at least the one vehicle door from a locked state; and the automatic door opening/closing section automatically carries out an operation to open at least the one vehicle door from a closed state, wherein the one vehicle door controllable by the automatic door opening/closing section is a rear door provided at a back portion of the vehicle, wherein the vehicle-side unit has a communication area in a predetermined range surrounding the rear door as an area in which duplex communications is carried out between the hand-held device and the vehicle-side unit, and wherein, when the operation detection section detects the predetermined operation on the rear door, the vehicle-side unit opens the rear door only when the vehicle-side unit is not in communication with the hand-held device in the predetermined range around the rear door.