Patent ID: 7644155

Claim:
A data communication system comprising: a home server; a mobile communication terminal transmitting a request signal including request information for delivering data stored in a data source in a network to said mobile communication terminal, and request information for transferring the data to said home server; an application server fetching data open to a public on the network, conducting a data rate conversion for delivery to said mobile communication terminal and conducting data delivery, and transferring the fetched data to said home server, in accordance with information included in the request signal from said mobile communication terminal, wherein said application server fetches requested data requested in the request signal, and the fetched data is of a highest bit rate amount among a plurality of kinds of requested data stored in the data source with bit rates different from each other; said application server includes: a fetching unit fetching the data open to the public on said network in accordance with a request from said mobile communication terminal; a first data rate conversion delivery unit conducting a conversion on the data, fetched by said fetching unit, into a data rate for the delivery to said mobile communication terminal and conducting the delivery to said mobile communication terminal; and a transferring unit for transferring the data, fetched by said fetching unit, to said home server, and said home server comprises: an accumulation processing unit accumulating the data, transferred from said application server, in a storage area; and a regenerating unit regenerating the data accumulated in said storage area; and said home server receives data from said application server fetched and transferred through said network, and accumulates received data, wherein said mobile communication terminal comprises a delivery request signal outputting unit outputting, to said application server, a delivery request signal designating a location of delivery-requested data on said network and a location of said home server which is a transferred destination, and said transferring unit transfers the data, fetched by said fetching unit, to said home server on the basis of said delivery request signal from said delivery request outputting unit of said mobile communication terminal.