| 摘要 |
Systems and methods for distributing digital content from a service provider to users are described. In one aspect, a data partition scheme (methods and systems) is disclosed for a service provider to process and partition digital content into at least two parts: at least one enhancement part and at least one core part. The at least one enhancement part is much bigger than the at least one core part, but is of no or limited value to a user when the at least one core part is missing. The user can only reconstruct and play back the digital content when both the at least one enhancement part and the at least one core part is available. In another aspect, a distribution scheme (methods and systems) is disclosed to distribute the at least one enhancement part and the at least one core part over two separate systems: an enhancement part distribution sub-system built over a peer-to-peer network and a core part distribution sub-system built over a client-server network respectively. According to this scheme, a user acquires the at least one enhancement part through the enhancement distribution sub-system and the at least one core part through the core distribution sub-system, and assembly them to reconstruct and play back the digital content.
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