Data administration method
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United States of America Patent
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May 16, 2006
Grant Date -
May 16, 2002
app pub date -
Mar 20, 2001
filing date -
Nov 10, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Data administration method which prevents the infringement of a copyright by encrypting and distributing digital content, and readily grasps which contents are contained in the digital content included in the data. Preparing symbol information symbolized so as to visually and auditorily recognize the contents of the digital content that conduct distribution (Step S12), embedding the symbol information in a header data section (Step S13), encrypting the digital content (Step S15), embedding consent information including the information on the contents key in the header data section as an electronic watermark (Step S16), and compositing the real data section and the consent-information-added header data section and distributing the composite data (Step S17).
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