专利名称：A method and apparatus for delivering
watermarked digital media content to a userupon request
发明人：Nicolas, Christophe,Main, Alec,Sarda, Pierre申请号：EP11174431.4申请日：20110719公开号：EP2410759A2公开日：20120125
专利附图：
摘要：The present invention provides a means and an apparatus for watermarking adigital signal. A particular content which is to be made available by a content provider to
potential content users is prepared by encoding the content into a plurality of encodedstreams, each encoded stream being encoded according to a different bit-rate. Eachencoded stream comprises a plurality of chunks and each chunk is retrievable by arequestor of content. Upon request of said content by a user, the plurality of chunksmaking up the content are selected from the plurality of the different encoded streamsand a subset from that plurality of chunks is watermarked using a unique identifyingparameter associated with the requestor.
申请人：Nagravision S.A.
地址：22-24, route de Genève 1033 Cheseaux-sur-Lausanne CH
国籍：CH
代理机构：Leman Consulting S.A.
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