Transmission apparatus and method, reception apparatus and method, management apparatus and method, charging apparatus and method, providing apparatus and method, and recording medium

摘要

This invention relates to a transmission apparatus for transmitting digital content data via a communication medium, comprising attachment means for attaching cost information per unit data volume to the digital content data; and transmission means for transmitting the digital content data attached with the cost information after converting a data format of the digital content data attached with the cost information into a data format suitable to the communication medium.