US3900887A
(en)
*
|
1973-01-18 |
1975-08-19 |
Nippon Steel Corp |
Method of simultaneous multiplex recording of picture and data and of regenerating such record and apparatus therefor
|
DE2908337C2
(de)
*
|
1979-03-03 |
1982-11-18 |
PMA Elektro AG, 8623 Wetzikon |
Anschlußarmatur für flexible Wellschläuche
|
US4965825A
(en)
*
|
1981-11-03 |
1990-10-23 |
The Personalized Mass Media Corporation |
Signal processing apparatus and methods
|
US5721788A
(en)
*
|
1992-07-31 |
1998-02-24 |
Corbis Corporation |
Method and system for digital image signatures
|
US6424725B1
(en)
|
1996-05-16 |
2002-07-23 |
Digimarc Corporation |
Determining transformations of media signals with embedded code signals
|
EP0959621B1
(en)
*
|
1993-11-18 |
2001-02-28 |
Digimarc Corporation |
Video copy control with plural embedded signals
|
US5841886A
(en)
*
|
1993-11-18 |
1998-11-24 |
Digimarc Corporation |
Security system for photographic identification
|
US6983051B1
(en)
|
1993-11-18 |
2006-01-03 |
Digimarc Corporation |
Methods for audio watermarking and decoding
|
US6614914B1
(en)
|
1995-05-08 |
2003-09-02 |
Digimarc Corporation |
Watermark embedder and reader
|
US5832119C1
(en)
*
|
1993-11-18 |
2002-03-05 |
Digimarc Corp |
Methods for controlling systems using control signals embedded in empirical data
|
US6449377B1
(en)
|
1995-05-08 |
2002-09-10 |
Digimarc Corporation |
Methods and systems for watermark processing of line art images
|
US5748763A
(en)
|
1993-11-18 |
1998-05-05 |
Digimarc Corporation |
Image steganography system featuring perceptually adaptive and globally scalable signal embedding
|
US7171016B1
(en)
*
|
1993-11-18 |
2007-01-30 |
Digimarc Corporation |
Method for monitoring internet dissemination of image, video and/or audio files
|
US5862260A
(en)
*
|
1993-11-18 |
1999-01-19 |
Digimarc Corporation |
Methods for surveying dissemination of proprietary empirical data
|
US6611607B1
(en)
|
1993-11-18 |
2003-08-26 |
Digimarc Corporation |
Integrating digital watermarks in multimedia content
|
US6516079B1
(en)
|
2000-02-14 |
2003-02-04 |
Digimarc Corporation |
Digital watermark screening and detecting strategies
|
USRE40919E1
(en)
*
|
1993-11-18 |
2009-09-22 |
Digimarc Corporation |
Methods for surveying dissemination of proprietary empirical data
|
US6408082B1
(en)
|
1996-04-25 |
2002-06-18 |
Digimarc Corporation |
Watermark detection using a fourier mellin transform
|
US6580819B1
(en)
|
1993-11-18 |
2003-06-17 |
Digimarc Corporation |
Methods of producing security documents having digitally encoded data and documents employing same
|
US5768426A
(en)
*
|
1993-11-18 |
1998-06-16 |
Digimarc Corporation |
Graphics processing system employing embedded code signals
|
US5822436A
(en)
*
|
1996-04-25 |
1998-10-13 |
Digimarc Corporation |
Photographic products and methods employing embedded information
|
US6122403A
(en)
|
1995-07-27 |
2000-09-19 |
Digimarc Corporation |
Computer system linked by using information in data objects
|
US5748783A
(en)
*
|
1995-05-08 |
1998-05-05 |
Digimarc Corporation |
Method and apparatus for robust information coding
|
US6522770B1
(en)
|
1999-05-19 |
2003-02-18 |
Digimarc Corporation |
Management of documents and other objects using optical devices
|
US6968057B2
(en)
*
|
1994-03-17 |
2005-11-22 |
Digimarc Corporation |
Emulsion products and imagery employing steganography
|
US6560349B1
(en)
|
1994-10-21 |
2003-05-06 |
Digimarc Corporation |
Audio monitoring using steganographic information
|
US6728390B2
(en)
|
1995-05-08 |
2004-04-27 |
Digimarc Corporation |
Methods and systems using multiple watermarks
|
US6721440B2
(en)
|
1995-05-08 |
2004-04-13 |
Digimarc Corporation |
Low visibility watermarks using an out-of-phase color
|
US6760463B2
(en)
|
1995-05-08 |
2004-07-06 |
Digimarc Corporation |
Watermarking methods and media
|
US7486799B2
(en)
|
1995-05-08 |
2009-02-03 |
Digimarc Corporation |
Methods for monitoring audio and images on the internet
|
US6577746B1
(en)
*
|
1999-12-28 |
2003-06-10 |
Digimarc Corporation |
Watermark-based object linking and embedding
|
US6829368B2
(en)
|
2000-01-26 |
2004-12-07 |
Digimarc Corporation |
Establishing and interacting with on-line media collections using identifiers in media signals
|
US6788800B1
(en)
|
2000-07-25 |
2004-09-07 |
Digimarc Corporation |
Authenticating objects using embedded data
|
US6965682B1
(en)
|
1999-05-19 |
2005-11-15 |
Digimarc Corp |
Data transmission by watermark proxy
|
US6381341B1
(en)
|
1996-05-16 |
2002-04-30 |
Digimarc Corporation |
Watermark encoding method exploiting biases inherent in original signal
|
US6804376B2
(en)
|
1998-01-20 |
2004-10-12 |
Digimarc Corporation |
Equipment employing watermark-based authentication function
|
US6625297B1
(en)
|
2000-02-10 |
2003-09-23 |
Digimarc Corporation |
Self-orienting watermarks
|
US6804377B2
(en)
|
2000-04-19 |
2004-10-12 |
Digimarc Corporation |
Detecting information hidden out-of-phase in color channels
|
US7027614B2
(en)
|
2000-04-19 |
2006-04-11 |
Digimarc Corporation |
Hiding information to reduce or offset perceptible artifacts
|