Pioneer Corporation

Increment P Corporation

Yuusuke Nakane

Atsuhiko Fukushima

Toyohiro Takenaka

Takashi Takenaga

Yuji Koga

Motohiko Takayanagi

Toru Fujita

A communication type navigation apparatus can communicate with a server device via a communication path. The navigation apparatus requests route search, and the server device executes route search to produce route information of a searched route. Then, the meshes necessary to travel along the searched route are determined, and the navigation apparatus obtains necessary mesh data from the server device. The navigation apparatus may request newer mesh data to the server device based on the updating information of the mesh data. By appropriately determining the mesh data to be and not to be downloaded from the server device, the communication cost necessary for obtaining the mesh data can be saved.

Communication-type navigation apparatus and server device

A certain amount of basic map data is installed into the map data storage medium in the navigation apparatus at the time of initial setting or the like (this process will be hereinafter referred to as 'pre-install'), and thereafter the user connect to the map data providing center to download necessary data according to need. Thus, the present invention offers efficient method of obtaining map data in the communication-type navigation system.

Map data providing apparatus, map data installing terminal device, and communication-type navigation apparatus

Growing community of inventors

Tokyo-to, Japan

Yuusuke Nakane