Patent ID: 9555771
Date: 2017-01-31
CPC Classifications: B60R

Claim:
1. A vehicle onboard device comprising: a vehicular communicator configured to communicate with a server through a mobile communication network and measuring received power of a radio wave transmitted from a base station of the mobile communication network; a collation controller configured to store a key information that is required to be updated in each expiration date and providing a start permission that changes a power unit of a vehicle from a stopped state to an operating state when a received key information that has been transmitted from an apparatus other than the vehicle and is received by the vehicle onboard device is collated with the key information stored in the collation controller and the received key information is matched with the key information stored in the collation controller, and when the key information satisfies an expiration date; and a short range communicator of the vehicle configured to perform short range communication with a mobile terminal device, the mobile terminal device being registered in advance in the collation controller and communicable with the server through the mobile communication network, wherein during an operation of the power unit, the collation controller sets an outside-range approach flag when the received power measured by the vehicular communicator is equal to or less than a near-marginal level, and the collation controller resets the outside-range approach flag when the received power is higher than the near-marginal level, the near-marginal level is set higher than a marginal level by a predetermined permissible value, the marginal level corresponding to a minimum received power level required for communication between the base station of the mobile communication network and the vehicular communicator, during a stopping of the power unit, the collation controller permits the mobile terminal device to communicate with the server and to acquire a key information update information when the vehicular communicator is positioned in an outside range being incapable of a communication between the vehicular communicator and the base station of the mobile communication network, the key information needs to be updated, and the outside-range approach flag is set, and the collation controller receives the key information update information acquired from the mobile terminal device through the short range communicator and updates the key information.