Information service system, server and in-vehicle unit for use in information service system, and record medium on which program readable by in-vehicle unit or computer is recorded

摘要

To reduce communication time and charge and construct an information service system with higher user convenience, a server containing no map data transmits additional information to be presented on a map as data in specific format to navigation equipment or a PC each containing map data. The navigation equipment and the PC presents a map by adapting the data in specific format to the map data and then adding the information related to the data in specific format to the map.