| 摘要 |
<p>A system and method of distributing music and video signals over a network (120) is disclosed. In one embodiment a unique encryption key is generated (220) based on who the user is and what content (240) the user is requesting to download. When a user downloads a new music or video title, it is encrypted in a manner which no other users can decrypt (210). The encryption key needed to encrypt the digital music or video signal is stored on the client in an opaque format to prevent duplication and unauthorized playback. In another embodiment the user belongs to one or more subscription groups receives a subscription-based key. In another embodiment, electronic commerce units will be used to purchase music and video content. Also disclosed is a unique system and method for transferring digital multimedia content to one of a plurality of hardware players.</p> |
