Digitally watermarking paper and objects with stamps and related digitally watermarked stamper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Feb 26, 2004
app pub date -
Jun 2, 2003
filing date -
Jun 20, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention provides steganographic embedding techniques. In particular, the present invention provides a stamper (e.g., a rubber stamp) that includes a steganographic signal (e.g., a digital watermark) embedded in a stamping surface pattern thereof. The digital watermark survives in its host pattern when the stamper stamps the host pattern. The digital watermark can be used to authenticate or identify the stamper. The digital watermark can also be used to link to related information.
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Cited Art Landscape
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