CONTENT DUPLICATION SYSTEM, CONTENT USAGE SYSTEM, MANAGEMENT SERVER, CONTENT USAGE METHOD, CONTENT USAGE PROGRAM, AND INTEGRATED CIRCUIT

摘要

Provided is a content copy system that distributes main content (e.g., movie) and sub-content using a rental optical medium and properly recovers the usage fee for sub-content separately from the usage fee for main content. The content copy system includes: a content usage apparatus comprising an acquisition unit that acquires usage ID provided thereto in exchange for the usage fee for content, a transmission unit that transmits the acquired usage ID to the management server, and a usage unit that receives a decryption key from the management server and records the decryption key and encrypted content on a recording medium; and a management server comprising a storage unit storing usage IDs and decryption keys in one-to-one correspondence, and a control unit that, when receiving usage ID from the content usage apparatus, transmits a decryption key for content corresponding to the usage ID and performs settlement processing for the usage ID.