Aisin Aw Co., Ltd.

Norihisa Fujikawa

Hiroyoshi Masuda

Kensuke Takeuchi

Koichi Iwatsuki

Yoshihiro Tanabe

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.

Growing community of inventors

Okazaki, Japan

Norihisa Fujikawa