Navigation system, and information acquisition method
AssigneeXanavi Informatics Corporation
InventorsAkio Sumizawa, Yoshinori Endo, Shinichi Amaya, Taketo Tsuburaya
Life of this patent
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Abstract
A technique which enables a navigation system mounted on a vehicle or the like to be connected with an information providing device by utilizing a short range base station. In cases where a recommended route passes through a communication spot, which is an area enabled for communication by the short range base station, the navigation system is connected with the information providing device through the base station, after moving as far as the communication spot, and in cases where the recommended route does not pass through the communication spot, the system is connected with the information providing device through a public network by a communication terminal.
Claims5
A navigation system connected with an information providing device via, respectively, a public network and a base station for short range communication, for receiving information transmitted from said information providing device, said navigation system comprising:
- map information storage means which stores information indicating a position of said base station and map data containing road data;
- route storage means which stores a route composed of at least one road;
- current position calculating means which calculates current position;
- first communication means connected with said base station;
- second communication means connected with the public network;
- and
- decision means which decides whether or not the route read from the route storing means passes through an area in which communication is possible by the base station read from said map information storage means,
- wherein, in cases in which it is decided that said route passes through the area in which communication by said base station is possible, said navigation system is connected with said base station using said first communication means after said area is reached, and in cases in which it is decided that said route does not pass through the area in which communication by said base station is possible, said navigation system is connected with said public network using said second communication means.
An information acquisition method using a navigation system connected with an information providing device via, respectively, a public network and a base station for short range communication, for receiving information transmitted from said information providing device,
- wherein said navigation system comprises:
- map information storage means which stores information indicating a position of said base station and map data containing road data;
- route storage means which stores a route composed of at least one road;
- first communication means connected with said base station;
- second communication means connected with the public network;
- and
- wherein the method comprises the steps of:
- calculating a current position;
- deciding whether or not the route read from the route storing means passes through an area in which communication is possible by the base station read from said map information storage means;
- and
- connecting said navigation system, in cases in which it is decided that said route passes through the area in which communication by said base station is possible, with said base station, using said first communication means after said area is reached, and in cases in which it is decided that said route does not pass through the area in which communication by said base station is possible, with said public network using said second communication means.
Dependencies are inferred from the claim text.