Patent ID: 8160814

Claim:
A map information distribution system comprising: a navigation device that updates map information based on received update information; and a map information distribution center that distributes the update information to the navigation device; the navigation device comprising: a first controller specifically configured to: send update request information for requesting the update information of the map information to the map information distribution center; detect a host vehicle state; set a destination; and store a preset update point in a memory; and send update request information that requests the update information for the map information of a first region, which is centered on the update point, to the map information distribution center if the host vehicle state is engine start-up, and send update request information that requests the update information for the map information of a second region, which is centered on the destination, to the map information distribution center if the host vehicle state is setting of the destination; and the map information distribution center comprising: a second controller specifically configured to: receive the update request information; obtain the update information corresponding to the received update request information; obtain updated content corresponding to the obtained update information; assign a score to the updated content based on factor information corresponding to the obtained updated content; assign an order of priority to the respective updated content based on the scores assigned to the respective updated content; and distribute the update information and the prioritized updated content to the navigation device; wherein the first controller is specifically configured to update the map information based on the received update information, and notify a user of the navigation device of the received updated content based on the order of priority assigned to the updated content.