| 摘要 |
A method for managing download of contents includes: providing a replay memory for storing a globally unique right object identifier (GUID) and a right issuer timestamp (RITS), and a duplication memory for storing a right object (RO) in downloading a duplicate of content that is already stored in the replay memory; when a right issuer timestamp (RITS) included in the right object (RO) of the currently received content is less than the current time plus the set threshold value, and the globally unique right object identifier (GUID) and the right issuer timestamp (RITS) of the received right object (RO) are already stored in the replay memory, separately storing the received right object (RO) in the duplication memory in association with the globally unique right object identifier (GUID); and when a content usage right is determined to expire based on the globally unique right object identifier (GUID) and the right issuer timestamp (RITS) which are already stored in the replay memory, continuously providing the content usage right according to the globally unique right object identifier (GUID) and the right issuer timestamp (RITS) of the right object (RO) stored in the duplication memory.
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