| 摘要 |
FIELD: information technology. ^ SUBSTANCE: disclosed is a content download system comprises: a content supplying device, a content receiving device, a download apparatus designed to download encrypted content and playing control data necessary for playing said content from said content supplying device according to user operations; obtaining apparatus to confirm the existence of a license which includes a key for decrypting said encrypted content based on said playing control data when playing said downloaded content, and to obtain said license according to the confirmation result; and playing apparatus to play said encrypted content using said obtained license. Playing control metafile describes , , , , , , , and . In the case when multiple licenses are set for a single content, the items through describe only the number of set licenses. ^ EFFECT: design of a system which provides different content downloading service modes. ^ 17 cl, 45 dwg |
