| 摘要 |
Provided is a vehicle-mounted device that, when data to which the vehicle-mounted device is referring has been deliberately updated to data for a destination different from the vehicle destination, will not detect the change as a destination conflict error. This vehicle-mounted device is provided with: a data storage unit (1) for storing destination-dependent data; an update data acquisition unit (2) for acquiring update data for the purpose of updating data; an update unit (3) for updating data with the update data; a vehicle-mounted vehicle information transmission/reception unit (4a) for acquiring a destination of the vehicle; and an error detection unit (5a) for outputting destination conflict error information when there is a conflict between the vehicle destination and the destination in the data. On the basis of the data update history, the error detection unit (5a) suppresses the output of destination conflict error information. |
