Abstract: There is provided an in-vehicle device, which is mounted in a vehicle, that receives, from a center device, a traveling route of the vehicle searched for by the center device in response to a request from the in-vehicle device and guides regarding the received traveling route of the vehicle, the in-vehicle device including a calculation unit that calculates a response waiting time during which the in-vehicle device is able to wait from the request until the guidance regarding the traveling route of the vehicle, a determination unit that determines whether to update the traveling route of the vehicle based on the response waiting time calculated by the calculation unit and an update unit that updates the traveling route of the vehicle based on a determination result of the determination unit.

Abstract: At the first data access by a navigation unit to a recording medium that records updating right information necessary for updating map data in a rewritable data area in which map data are recorded, the updating right information is read from the data area and is deleted from the data area, and a map updating due date created based on the read updating right information is written in a memory of the navigation unit together with the medium identification information read from a non-rewritable management area.

Abstract: At the first data access by a navigation unit to a recording medium that records updating right information necessary for updating map data in a rewritable data area in which map data are recorded, the updating right information is read from the data area and is deleted from the data area, and a map updating due date created based on the read updating right information is written in a memory of the navigation unit together with the medium identification information read from a non-rewritable management area.

Abstract: Devices and methods search for a route from a departure point to a destination and provide guidance based on the route that is found. The devices and methods associate a street name with a parcel in which map data is associated with an area that is bounded by specified coordinates and, when the street name is input, extract the parcel in which the street name is located. The devices and methods extract a city area name in the extracted parcel and display the city area name such that the city area name can be selected. The devices and methods extract a local area name that is included in the parcel in which the selected city area name is located, display the local area name such that the local area name can be selected, and specify a house number within the parcel in which the selected local area name is located.

Abstract: Navigation devices, methods, and programs accept an input of a character, acquire a stored keyword that corresponds to the input character from a storage unit that stores keywords, and display at least one acquired keyword on a display. The devices, methods, and programs accept a selection of one of the displayed keywords, set a search term based on the input character and the selected keyword, and search location information items stored in the storage unit using the set search term. The devices, methods, and programs store a character string representing the set search term as a keyword in the storage unit, acquire deletion information that designates a location information item to be deleted from the storage unit, delete the location information item to be deleted from the storage unit, and delete a stored keyword that is included in a search term for the deleted location information item.