METHOD AND APPARATUS FOR DELIVERING WATERMARKED DIGITAL MEDIA CONTENT TO A USER UPON REQUEST
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United States of America Patent
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Issued Date -
Feb 23, 2012
app pub date -
Jul 20, 2011
filing date -
Jul 21, 2010
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Abstract
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.
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