Media for videophone communication, media for communication navigation,
media for i-mode packet communication, and media for handling video data
as streaming data are linked to a server so that the server can receive
data from the media of each type. A user of data of different types of
communication specifications performs communication by using an
information terminal (e.g., in a vehicle) so as to simultaneously capture
data of the different types from the server. The server converts the data
of the different types into data in accordance with a single (e.g., H.323
or H.324) communication protocol, and adds codes to each type of data.
The type of data is re-divided depending on a predetermined data amount
for each data item, and numbers are sequentially added to the divided
data segments. The divided data segments are rearranged and transmitted.
The user performs a reverse process to restore the original data for use
as an output.