Pioneer Corporation

Nissan Motor Company Limited

Increment P Corporation

Yoshihide Hamaguchi

Takeharu Arakawa

Kenichiro Yano

Satoshi Saitoh

Hiroyuki Kashima

Yasushi Kikuchi

Yasufumi Iwahori

Ryota Shitamatsu

Shuuji Watanabe

A terminal unit () of a navigation system () transmits to a server () list request information containing a rectangular code corresponding to a predetermined display rectangular area of a travel route map. The terminal unit () acquires from the server () a server POI list corresponding to the rectangular code of the list request information, and when recognizing that the server POI list contains POI individual information corresponding to terminal base data that is not stored in a terminal base storage area, the terminal unit () transmits base data request information about POIID of the POI individual information to the server (). Upon acquisition of server base data corresponding to the base data request information from the server (), the terminal unit () stores the server base data in the terminal base storage area as terminal base data.

Information updating device, information distributing device, information processing system, method thereof, program thereof, and storage medium storing the program

A map distribution system, includes an information center that stores the latest map information and a terminal device including a communication unit, a map storing unit, and a control information storing unit. The communication unit transmits information to the information center and receives information from the information center. The map storing unit stores map information. The control information storing unit stores control information associated with the map information. The terminal device transmits the control information to the information center every prescribed timings. The information center transmits the latest control information to the terminal device in response to the transmitted control information. The terminal device rewrites the control information stored in the control information storing unit to the latest control information.

Map distribution system and terminal device used in the same

An upgrade method for navigation data is provided with: a memory status of a memory device that is removed from a navigation apparatus is checked and it is determined whether there are the navigation data to be upgraded and the user data to be saved. The user data is saved in a backup memory device. The navigation data is written over with upgraded navigation data. Then, the saved data is read from the backup memory device and rewritten in the memory device as the user data.

Upgrade for navigation data based on usage data or initialization of navigation data

Growing community of inventors

Kawagoe, Japan

Yoshihide Hamaguchi