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Dynamic watermarking of digital media content at point of transmission

Abstract:

Multimedia content, such as film or video, is streamed to a plurality of users with a unique watermark embedded for each user. The content is provided through asynchronous multicast transmission. Users may request the content at different times and receive a uniquely watermarked stream of the content upon request as a discrete, just-in-time transmission. Content is watermarked upon a request for the content by a user. In several embodiments, each user is associated with a unique user identifier that becomes associated with a unique watermark. Once a watermark is associated with a user, the association is stored so that the same unique watermark may be used for future content requested by the user.