Rich media server and rich media delivery system, and rich media delivery methods

摘要

A rich media server, a rich media transmission system and a rich media transmission method are provided to supply rich media encrypting the other media except image related media, thereby protecting copyright of a rich media producer. If rich media are requested, a controller(90) controls an encryption key generator(70) to generate an encryption key. A rich media processor(40) selects corresponding image related media reproducible in the first terminal device based on device right information among image related media corresponding to the request. The rich media processor encrypts the other media except the selected image related media based on the encryption key.