发明授权
US08582900B2 Digital watermark embedding device, computer-readable recording medium, and digital watermark detecting device and computer-readable recording medium
有权
数字水印嵌入装置,计算机可读记录介质和数字水印检测装置以及计算机可读记录介质
- 专利标题: Digital watermark embedding device, computer-readable recording medium, and digital watermark detecting device and computer-readable recording medium
- 专利标题(中): 数字水印嵌入装置,计算机可读记录介质和数字水印检测装置以及计算机可读记录介质
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申请号: US13296976申请日: 2011-11-15
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公开(公告)号: US08582900B2公开(公告)日: 2013-11-12
- 发明人: Shohei Nakagata , Kensuke Kuraki , Jun Takahashi , Taizo Anan
- 申请人: Shohei Nakagata , Kensuke Kuraki , Jun Takahashi , Taizo Anan
- 申请人地址: JP Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JP Kawasaki
- 代理机构: Fujitsu Patent Center
- 优先权: JP2010-294032 20101228
- 主分类号: G06K9/36
- IPC分类号: G06K9/36
摘要:
An digital watermark embedding device including an interface unit configured to acquire content in a digital form and digital watermark information, the device includes, a codeword generating unit configured to generate a base codeword including a bit sequence including the digital watermark information; a shifting unit configured to generate a plurality of correcting codewords differing from one another by permutating an arrangement in the bit sequence included in the base codeword depending on a plurality of shift amounts, the plurality of shift amounts differing from one digital watermark information to another, under a predetermined permutation rule; and a watermark superimposing unit configured to embed the plurality of correcting codewords in the content.
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