Signal embedding and detection using circular structures in a transform domain of a media signal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 26, 2011
Grant Date -
Nov 19, 2009
app pub date -
Nov 18, 2008
filing date -
Mar 22, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Machine readable signals embedded in other media signals include a circular structure in a transform domain to facilitate detection. The machine readable signals are not apparent to human observers of rendered media containing the machine readable signals, such as images and documents. A detector captures the media signal, transforms it to the transform domain, and then uses the circular structure in the transform domain to facilitate detection despite rotation of the media signal.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully