Patent ID: 7103472

Claim:
A navigation system for providing positional information through a network, comprising: a server for providing positional information, an information terminal apparatus for receiving positional information, and a base station for executing communication and relay processing between the server and the information terminal apparatus; wherein the server includes an image data storage block storing actually taken image data at a plurality of geographic points in an area for which positional information is provided, a positional information database storing correlation data between an identifier of image data stored in the image data storage block and positional information, and a file selection block for executing processing of obtaining, based on positional information received through the base station, an image data identifier corresponding to the positional information from the positional information database and obtaining actually taken image data from the image data storage block based on the obtained image data identifier; the base station includes a regional information management block for managing information including the positional information of itself and, based on an inquiry for a position from the information terminal apparatus, executing processing of transmitting positional information stored in the regional information management block to the server; and the information terminal apparatus includes a communication block for transmitting a positional inquiry to the base station and receiving actually taken image data obtained based on the positional information in the server, and a display block for displaying the actually taken image data.