Patent ID: 7130742

Claim:
A content server, comprising: guide information transmitting means for transmitting guide information to a terminal through a network, the guide information including site information and map data, the site information including site positional information for specifying a position of a site, the map data including positional information on a map for each site; user information receiving means for receiving user information generated by a user and for correlating the user information to the guide information; guide content generating means for generating guide content that includes the guide information, the user information, and a utility program, the utility program for causing a portable device to utilize the guide information by relating the guide information with the user information and to display the site information on the map by matching the site positional information to the site information on the map; utilizing information receiving means for receiving utilizing information for the utility program from the terminal; driving means for executing the utility program in accordance with the utilizing information to obtain an execution result; execution result transmitting means for transmitting the execution result to the terminal; position and time acquisition means for acquiring a plurality of measured positions and a measured time associated with each of the measured positions; image data acquisition means for acquiring image data of an object and a taking time at which the image data of the object is obtained; and image taking position specifying means for specifying a taking position of the acquired image data by matching the taking time of the acquired image data with the measured times and the measured positions acquired by said position and time acquisition means.