Invention Grant
- Patent Title: Digital watermark embedding apparatus, digital watermark detecting apparatus, digital watermark embedding method, digital watermark detecting method and computer program product
- Patent Title (中): 数字水印嵌入装置，数字水印检测装置，数字水印嵌入方法，数字水印检测方法及计算机程序产品
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Application No.: US11336832Application Date: 2006-01-23
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Publication No.: US07826637B2Publication Date: 2010-11-02
- Inventor: Hirofumi Muratani
- Applicant: Hirofumi Muratani
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2000-333725 20001031
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04L9/32
Abstract:
A digital watermark embedding apparatus for embedding watermark information into a digital content, obtains a predetermined topological invariant corresponding to the watermark information to be embedded into the digital content, and sets the predetermined topological invariant to the digital content by modifying the digital content into which the watermark information is to be embedded.
Public/Granted literature
Information query
