Invention Grant
US07885427B2 System and method for solving the “birthday” problem with watermarking 失效
解决水印“生日”问题的系统和方法

System and method for solving the “birthday” problem with watermarking
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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