Invention Grant
- Patent Title: System and method for solving the “birthday” problem with watermarking
- Patent Title (中): 解决水印“生日”问题的系统和方法
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Application No.: US11833981Application Date: 2007-08-04
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Publication No.: US07885427B2Publication Date: 2011-02-08
- Inventor: Thomas A. Bellwood , James M. Gasiewski , Donald E. Leake, Jr. , Jeffrey B. Lotspiech
- Applicant: Thomas A. Bellwood , James M. Gasiewski , Donald E. Leake, Jr. , Jeffrey B. Lotspiech
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Mohammed Kashef
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04L9/32

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.
Public/Granted literature
- US20090034783A1 SYSTEM AND METHOD FOR SOLVING THE BIRTHDAY PROBLEM WITH WATERMARKING Public/Granted day:2009-02-05
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