Steganographic system with changing operations
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United States of America Patent
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May 20, 2003
Issued Date -
N/A
app pub date -
Jan 10, 2001
filing date -
Nov 18, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Multi-bit auxiliary information is hidden in audio and imagery (e.g., digital photographs, video), using steganographic techniques. Such information can be used for various purposes, including identifying audio/imagery as originating from a particular source, copy control, etc. In some embodiments, operation of the system changes over time. This change may be triggered by various events, including passage of new information to the system through audio or imagery being processed.
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