System and method for solving the “birthday problem” with watermarking
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United States of America Patent
Stats
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Sep 20, 2011
Grant Date -
Feb 5, 2009
app pub date -
May 31, 2008
filing date -
Aug 4, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method are provided for facilitating the playing of a watermarked video having the “birthday problem”. Consumers send the problem disc to an authorization center where the disc is analyzed to determine if it is a legitimate disc. The authorization center generates a digital certificate uniquely associated with the disc and with the video and embeds the digital certificate into the disc. The digital certificate will cause a video player to play the video without checking for the watermark.
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Family
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