Patent ID: 7148584

Claim:
A vehicle lock controller installed in a vehicle having a plurality of doors to control locking of the doors through communication with a portable device, the vehicle lock controller comprising: a plurality of transmitting circuits, each provided in association with a corresponding one of the doors to output a request signal and request the portable device to transmit a response signal; and a control unit connected to the transmitting circuits to intermittently transmit the request signal to each of the transmitting circuits at a predetermined cycle, wherein when receiving the response signal from the portable device, the control unit unlocks the door corresponding to the transmitting circuit that outputs the request signal to which the response signal is transmitted in response, the control unit transmitting the request signal to each transmitting circuit at the predetermined cycle set in accordance with a priority order determined based on how often each door is used, wherein the control unit shortens the predetermined cycle of transmitting the request signal to transmitting circuits corresponding to doors that are often used.