Digital watermarking for workflow by tracking content or content identifiers with respect to time
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United States of America Patent
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Jul 12, 2011
Grant Date -
Nov 10, 2005
app pub date -
Mar 17, 2005
filing date -
Oct 21, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Digital watermarking provides a chain of custody for video in movie studios. Several novel improvements in workflow processes for digital watermarking provide chains of custody. In a first implementation, a digital watermark payload includes an embedder ID and time stamp. The embedder ID is associated with a controlling PC user log, including, e.g., the user log being linked to a biometric of the user. In a second implementation, a video player is forced to run a video digital watermark embedder based upon a rights command, where an ID embedded in a watermark payload is determined solely by the embedder. A third implementation encrypts a conglomerate of watermarked segments of video so that a rendering device can decrypt the segments in a manner to produce different results in each usage dependent upon the key. A fourth implementation embeds digital watermarks in DVD disk images during delivery to a duplication house.
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