Patent ID: 7783421

Claim:
A navigation device including a display device, an input device, and a control unit for performing navigation processing, said navigation device comprising: a communication unit adapted to communicate with a server device; a navigation information storage unit adapted to store navigation information therein, said navigation device adapted to receive a list of user-provided data with corresponding reliability scores from the server device and download, from the server device, user-provided data selected from the list of user-provided data into the navigation information storage unit so that a driving history of a user's vehicle is collected by the server device to create the user-provided data to be used for a route search as part of navigation information based on the driving history of the user's vehicle, the user-provided data comprising coordinate information obtained from the driving history of the user's vehicle and link cost with respect to the coordinate information used for the route search, a reliability score calculated based on the usage result of other users being provided for each user-provided datum; and a human machine interface unit that displays the user-provided data and navigation information other than the user-provided data read from said navigation information storage unit; wherein the navigation device performs navigation processing in accordance with map data and the user-provided data.