Mitsubishi Electric Corporation

Toshiki Kawase

Tsuneo Sato

Yoshiaki Tsuda

Kuniaki Miyazaki

Yukishiro Saito

A map information management system includes a map company exclusive application data management device that confirms data authenticity from encrypted data obtained from a dynamic map data management device and generates encrypted data from added map company exclusive application data to dynamic map data by a map company exclusive secret key, and an automotive data management device that obtains added map company exclusive application data to dynamic map data from the map company exclusive application data management device, confirms data authenticity that is added map company exclusive application data to dynamic map data with using a map company exclusive application data public key, and generates encrypted data from data with automotive company exclusive application data by an automotive company exclusive application data secret key. When providing map information via plural organizations, the map information management system prevents data alteration and confirms data authenticity of the map information.

Map information management system, map information management device, and map company exclusive application data management device

A map database stores map data. The map data includes position reference point data including identification information of a position reference point being set in an intersection area where traffic lanes intersect, join, or diverge and an absolute position of the position reference point. A communication system receives the identification information of the position reference point and a relative position of another vehicle to the absolute position of the position reference point. A vehicle position information processing unit acquires the absolute position of the position reference point from the position reference point data on the basis of the received identification information of the position reference point. Then, the vehicle position information processing unit specifies a position of the another vehicle on the basis of the acquired absolute position of the position reference point and the received relative position of the another vehicle.

Growing community of inventors

Tokyo, Japan

Toshiki Kawase