Patents
Patent data provided by The
European Patent Office
and updated through early 2009. Full text patent data loaded weekly coming soon.
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US7362879 (B2), filed
Apr 24, 2007
, published
Apr 22, 2008
- DIGIMARC CORP
The application discloses various methods and systems to provide substitute information or objects for, e.g., substitution when making copies of media objects (e.g., audio, video or images). One method includes: receiving i) an identifier obtained from a...
US6993152 (B2), filed
Aug 12, 2002
, published
Jan 31, 2006
- DIGIMARC CORP
The present invention provides steganographic-embedding techniques. In one implementation a digital watermark signal is mapped to a set of spatial positions. Physical message objects are positioned according to the set of spatial positions. The signal is...
US7184572 (B2), filed
Jun 03, 2005
, published
Feb 27, 2007
- DIGIMARC CORP
A map depicts a plurality of different locations. Steganographic encoding is embebbed in first and second map areas. Steganographic encoding in each area conveys an identifier that is associated with its respective map area. Different encoded identifiers are...
US7098931 (B2), filed
May 15, 2001
, published
Aug 29, 2006
- DIGIMARC CORP
Digital watermarking technology is used in an image management system. Images are uniquely identified by digital watermarks. The images are stored so as to be indexed according to their unique identifiers. In the preferred embodiment, related images are linked...
US7042470 (B2), filed
Oct 23, 2001
, published
May 09, 2006
- DIGIMARC CORP
Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors. The watermarks are used to track metadata, provide serialization and forensic tracking, help auto-correlate image data, and quilt...
US7197160 (B2), filed
Apr 25, 2003
, published
Mar 27, 2007
- DIGIMARC CORP
The present invention relates to systems and methods for managing images and related information. In one implementation, geographic information system (GIS) layer information is registered or aligned to an image using digital watermark information embedded...
US6664976 (B2), filed
Mar 13, 2002
, published
Dec 16, 2003
- DIGIMARC CORP
Digital watermarking technology is used in an image management system. Images are identified by digital watermarks. The images are stored so as to be indexed according to their unique identifiers. In the preferred embodiment, related images are grouped into a...
US6122403 (A), filed
Nov 12, 1996
, published
Sep 19, 2000
- DIGIMARC CORP
Various improvements to steganographic systems, and applications therefore, are disclosed. The improvements include facilitating scale and rotation registration for steganographic decoding by use of rotationally symmetric steganographically embedded patterns...
US6553129 (B1), filed
Apr 28, 2000
, published
Apr 22, 2003
- DIGIMARC CORP
Various improvements to steganographic systems, and applications therefore, are disclosed. The improvements include facilitating scale and rotation registration for steganographic decoding by use of rotationally symmetric steganographically embedded patterns...
US6775392 (B1), filed
Apr 06, 2000
, published
Aug 10, 2004
- DIGIMARC CORP
Various improvements to steganographic systems, and applications therefore, are disclosed. The improvements include facilitating scale and rotation registration for steganographic decoding by use of rotationally symmetric steganographically embedded patterns...
US6922480 (B2), filed
Jul 29, 2002
, published
Jul 26, 2005
- DIGIMARC CORP
Line art on a banknote or other security document is slightly changed to effect the encoding of plural-bit digital data (i.e. the banknote is digitally watermarked). When such a banknote is thereafter scanned, the resulting image data can be recognized as...
US7249257 (B2), filed
Apr 10, 2001
, published
Jul 24, 2007
- DIGIMARC CORP
Maps and signs are embedded with plural-bit data in the form of digital watermarks. In one embodiment, the plural-bit data includes location information with respect to a map. A handheld reading device extracts the location information from the map. The...
US6542620 (B1), filed
Jul 27, 2000
, published
Apr 01, 2003
- DIGIMARC CORP
A variety of techniques for steganographically encoding digital data into, and decoding steganographically data from, audio, video, and image signals ("content signals") are disclosed. One method encodes a sampled input signal in a manner wherein a single...
US6757406 (B2), filed
Jan 10, 2001
, published
Jun 29, 2004
- DIGIMARC CORP
Multi-bit auxiliary information is hidden in imagery (e.g., digital photographs, video), using steganographic techniques. Such information can be used for various purposes, including identifying an image as originating from a particular source. In some...
US7061510 (B2), filed
Mar 05, 2001
, published
Jun 13, 2006
- DIGIMARC CORP
Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors, and as may be generated from databases based on such aerial data. The watermarks can be used, e.g., to track meta data, provide...
