发明名称 |
A method and apparatus for delivering watermarked digital media content to a user upon request |
摘要 |
<p>The present invention provides a means and an apparatus for watermarking a digital 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 encoded streams, each encoded stream being encoded according to a different bit-rate. Each encoded stream comprises a plurality of chunks and each chunk is retrievable by a requestor of content. Upon request of said content by a user, the plurality of chunks making up the content are selected from the plurality of the different encoded streams and a subset from that plurality of chunks is watermarked using a unique identifying parameter associated with the requestor.</p> |
申请公布号 |
EP2410759(A2) |
申请公布日期 |
2012.01.25 |
申请号 |
EP20110174431 |
申请日期 |
2011.07.19 |
申请人 |
NAGRAVISION S.A. |
发明人 |
NICOLAS, CHRISTOPHE;MAIN, ALEXANDER;SARDA, PIERRE |
分类号 |
H04N21/8358;H04N21/2347;H04N21/472;H04N21/845 |
主分类号 |
H04N21/8358 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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