| 摘要 |
A method for protecting live content in a multimedia system. An Acquisition Point (120) that receives content (CNT) distributes it in a network (100) comprising a recording device (130) and a rendering device (110). The content is associated with a license (CL) comprising a content identifier and the identity (APID) of the sending Acquisition Point. If the content is live, the license indicates that the content is ''live protected''. A rendering device that receives the content and its license asks 208 the Acquisition Point indicated in the license if it may render the content. If the content is not live, e.g. if it is replayed later, the permission is given. The Acquisition Point also stores a counter that indicates the number simultaneous viewings. If this number equals a maximum number of viewings when a request is received, the Acquisition Point asks all devices if they access the content to check if its count is correct and, if not, permits access to the requesting device.
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