A system is arranged by a service providing apparatus 109 for storing a plurality of contents data 110 and capable of transmitting the contents data via network interfaces 116a/116b and a communication path 112; and also a service relaying apparatus 101 for producing compressed moving picture data having a high image quality from still picture data, and capable of transmitting the compressed moving picture data via network interfaces 115a/115b and another communication path 111 to a reproducing terminal 106. As a result, desirable contents data can be displayed by the reproducing terminal which owns a capability of displaying the compressed moving picture data, but does not own such a capability of displaying the desirable contents data.