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Systems and methods for securing content delivered using a playlist

  • US 10,045,093 B2
  • Filed: 12/22/2016
  • Issued: 08/07/2018
  • Est. Priority Date: 02/17/2010
  • Status: Active Grant
First Claim
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1. A method of generating a unique playlists, where content assembled using the playlist includes a unique watermark sequence, and the method of generating the unique playlist comprises:

  • generating a unique watermark sequence using a server, where the unique watermark sequence is a unique identifier for a client device;

    encoding, using the server, a plurality of alternative groups of chunks of encoded content for each of a plurality of sections of a piece of content, where each of the alternative groups of chunks contains a plurality of chunks having different embedded digital watermark information from chunks in another alternative group of chunks, and where each chunk within an alternative group of chunks includes the same perceptual content encoded using the same embedded digital watermark information but encoded at a different bitrate using different encoding parameters as another chunk within the alternative group of chunks;

    selecting an alternative group of chunks from the plurality of alternative groups of chunks for each of the plurality of sections of the piece of content based upon the unique watermark sequence using the server;

    listing the selected chunks from the selected alternative groups of chunks in a playlist using the server, where the sequence of chunks assembled in the playlist is based on the unique watermark sequence;

    sending the playlist to the client device.

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