NAVIGATION SYSTEM, INFORMATION PROVIDING METHOD, AND MOBILE COMMUNICATION TERMINAL

摘要

Provided are a navigation system, an information providing method and a mobile communication terminal wherein the merits of wide-area information delivery using broadcast waves are sufficiently utilized and further delivery data are selected or discarded at each of a plurality of terminals according to the position or traveling path thereof, whereby information in accordance with the position of each mobile communication terminal can be provided. A broadcast station of a navigation system digital-broadcasts, to a plurality of mobile communication terminals, a plurality of data files including a plurality of types of content files and at least one guide file. Each mobile communication terminal uses associated information of the guide file to determine and use a content file corresponding to the current position or to a guide path that leads to the destination.

主权项

1. A navigation system, in which two-way communications are performed between a server and a plurality of mobile communications terminals that detect current positions, the server searches for guidance routes to destination points set by the mobile communications terminals and notifies the corresponding mobile communications terminals, and the mobile communications terminals perform route guidance based on the notified guidance routes;
the navigation system further comprises a digital broadcast station that digitally broadcasts to the plurality of mobile communications terminals plural data files, each of which includes multiple types of contents files and at least one guidance file; each of the multiple types of contents files contains contents information that is output to or displayed on the mobile communications terminals, and a contents information identifier corresponding to the contents information; the guidance file contains association information, which is information that associates the contents information identifier included in the multiple types of contents files with an area identifier of, the area identifiers each being given correspondingly to each of plural areas divided in the broadcast target area of the digital broadcast; and each of the mobile communications terminals is configured to: comprise a digital broadcast receiver, which receives the guidance file and the multiple types of contents files sequentially; specify the contents file, which corresponds to the contents information identifier associated with the area identifier of the broadcast target area that matches an area identifier of a present region including the current position that is detected by the respective mobile communications terminals and is contained within the guidance file, or matches an area identifier of a mobile plan region including the guidance route notified from the server; extract the specified contents file from the digital broadcast; and display or output the contents information included in the contents file extracted by each of the mobile communications terminals.