发明授权
US08023693B2 System and method for solving the “birthday problem” with watermarking
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用水印解决“生日问题”的系统和方法
- 专利标题: System and method for solving the “birthday problem” with watermarking
- 专利标题(中): 用水印解决“生日问题”的系统和方法
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申请号: US12131073申请日: 2008-05-31
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公开(公告)号: US08023693B2公开(公告)日: 2011-09-20
- 发明人: Thomas A. Bellwood , James M. Gasiewski , Donald E. Leake, Jr. , Jeffrey B. Lotspiech
- 申请人: Thomas A. Bellwood , James M. Gasiewski , Donald E. Leake, Jr. , Jeffrey B. Lotspiech
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Cantor Colburn LLP
- 代理商 Mohammed Kashef
- 主分类号: G06K9/00
- IPC分类号: G06K9/00 ; H04L9/32
摘要:
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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