Inventor
GUSTAFSON AMMON E
US23 patents
⚠️ This page may combine multiple inventors who share the name “GUSTAFSON AMMON E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DIGIMARC CORP
21 patentsUS7539325B2May 26, 2009
Documents and methods involving multiple watermarks
DIGIMARC CORP75 citations99
US7171020B2Jan 30, 2007
Method for utilizing fragile watermark for enhanced security
DIGIMARC CORP106 citations99
US7054462B2May 30, 2006
Inferring object status based on detected watermark data
DIGIMARC CORP141 citations99
US7054463B2May 30, 2006
Data encoding using frail watermarks
DIGIMARC CORP103 citations99
US6850626B2Feb 1, 2005
Methods employing multiple watermarks
DIGIMARC CORP149 citations99
US6744906B2Jun 1, 2004
Methods and systems using multiple watermarks
DIGIMARC CORP145 citations99
US6728390B2Apr 27, 2004
Methods and systems using multiple watermarks
DIGIMARC CORP183 citations99
US6636615B1Oct 21, 2003
Methods and systems using multiple watermarks
DIGIMARC CORP276 citations99
US6614914B1Sep 2, 2003
Watermark embedder and reader
DIGIMARC CORP1,265 citations99
US6574350B1Jun 3, 2003
Digital watermarking employing both frail and robust watermarks
DIGIMARC CORP320 citations99
US7266217B2Sep 4, 2007
Multiple watermarks in content
DIGIMARC CORP90 citations98
US7013021B2Mar 14, 2006
Watermark detection utilizing regions with higher probability of success
DIGIMARC CORP89 citations98
US6804376B2Oct 12, 2004
Equipment employing watermark-based authentication function
DIGIMARC CORP75 citations98
US7400743B2Jul 15, 2008
Methods to evaluate images, video and documents
DIGIMARC CORP32 citations96
US6915002B2Jul 5, 2005
Multi-carrier watermarks using carrier signals modulated with auxiliary messages
DIGIMARC CORP64 citations96
US7978875B2Jul 12, 2011
Signal processing utilizing host carrier information
DIGIMARC CORP15 citations93
US7574014B2Aug 11, 2009
Digital watermark detection utilizing host carrier information
DIGIMARC CORP17 citations93
US6594373B1Jul 15, 2003
Multi-carrier watermarks using carrier signals modulated with auxiliary messages
DIGIMARC CORP27 citations92
US7480393B2Jan 20, 2009
Optimized digital watermarking functions for streaming data
DIGIMARC CORP14 citations84
US7957552B2Jun 7, 2011
Optimized digital watermarking functions for streaming data
DIGIMARC CORP2 citations62
US7991184B2Aug 2, 2011
Apparatus to process images and video
DIGIMARC CORP0 citations52