Electronic watermark system
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United States of America Patent
Stats
-
Jul 16, 2002
Grant Date -
Nov 15, 2001
app pub date -
Feb 12, 1998
filing date -
Feb 12, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electronic watermark system invisibly embeds watermark information into original image data and the watermarked image data is transferred to a first medium. At the same time. the embedded watermark information is transferred to a second mediums. When a medium questioned is found, its watermark information can be easily identified by searching the second medium. Alternatively, the watermarked image data and the embedded watermark information are transferred to different storage areas of the same medium, respectively.
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Family
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