Information presentation system and portable telephone apparatus with information displaying function

DETAILED DESCRIPTION From the viewpoint of the above mentioned problems, it is therefore a first object of the present invention to provide an information presentation system and a portable telephone apparatus with an information displaying function, which can quickly give desirable information to a user having a portable communication terminal apparatus, such as a portable telephone apparatus or the like, can simplify a charging operation to the user, and can improve an effective utilization of a telephone resource.
It is a second object of the present invention to provide an information presentation system and a portable telephone apparatus with an information displaying function, in which a user of a portable communication terminal apparatus, such as a portable telephone apparatus and the like, can directly make use of a huge amount of retrieval database owned by a service center, and thereby desirable map data can be easily displayed in the portable communication terminal apparatus.
The above mentioned first object of the present invention can be achieved by a first information presentation system provided with: a data server for providing a predetermined kind of information data classified into a plurality of preset data groups through a communication line; and a portable communication terminal apparatus connectable through the communication line to the data server.
The portable communication terminal apparatus is provided with: a connecting device for connecting the portable communication terminal apparatus to the data server through the communication line; an input device for inputting or specifying a desirable code from among a plurality of data group codes each indicating respective one of the preset data groups; and a terminal side transmitting device for transmitting the inputted or specified code through the communication line to the data server.
The data server is provided with: a server side receiving device for receiving the transmitted code; and a server side transmitting device for transmitting the information data as for the data group corresponding to the received code by a predetermined format from the data server to the portable communication terminal apparatus through the communication line