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Patent Portfolio
Patent Portfolio
HIDING INFORMATION OUT-OF-PHASE IN COLOR CHANNELS
6,891,959
DIGITALLY WATERMARKING HOLOGRAMS FOR IDENTITY DOCUMENTS
6,882,737
TILE-BASED DIGITAL WATERMARKING TECHNIQUES
6,879,701
LINKING DOCUMENTS THROUGH DIGITAL WATERMARKING
6,869,023
METHOD AND APPARATUS FOR AUTOMATIC ID MANAGEMENT
6,868,497
METHODS EMPLOYING MULTIPLE WATERMARKS
6,850,626
ESTABLISHING AND INTERACTING WITH ON-LINE MEDIA COLLECTIONS USING IDENTIFIERS IN MEDIA SIGNALS
6,829,368
AUTHENTICATION WATERMARKS FOR PRINTED OBJECTS AND RELATED APPLICATIONS
6,823,075
SYSTEM AND METHOD FOR MANAGING COPYRIGHTED ELECTRONIC MEDIA
6,807,534
DETECTING INFORMATION HIDDEN OUT-OF-PHASE IN COLOR CHANNELS
6,804,377
EQUIPMENT EMPLOYING WATERMARK-BASED AUTHENTICATION FUNCTION
6,804,376
METHOD AND APPARATUS FOR WATERMARKING VIDEO IMAGES
6,798,894
AUTHENTICATING OBJECTS USING EMBEDDED DATA
6,788,800
WATERMARK HOLOGRAMS
6,782,115
WATERMARKS CARRYING CONTENT DEPENDENT SIGNAL METRICS FOR DETECTING AND CHARACTERIZING SIGNAL ALTERATION
6,771,797
DIGITAL WATERMARK SCREENING AND DETECTION DEVICES
6,768,809
METHODS FOR READING WATERMARKS IN UNKNOWN DATA TYPES, AND DVD DRIVES WITH SUCH FUNCTIONALITY
6,766,102
EMBEDDING DIGITAL WATERMARKS IN SPOT COLORS
6,763,124
DETECTION OF OUT-OF-PHASE LOW VISIBILITY WATERMARKS
6,763,123
WATERMARKING AN IMAGE IN COLOR PLANE SEPARATIONS AND DETECTING SUCH WATERMARKS
6,763,122
HALFTONE WATERMARKING AND RELATED APPLICATIONS
6,760,464
WATERMARKING METHODS AND MEDIA
6,760,463
STEGANOGRAPHIC IMAGE PROCESSING
6,757,406
DIGITAL WATERMARK DETECTING WITH WEIGHTING FUNCTION
6,751,337
METHOD AND SYSTEM FOR PREVENTING REPRODUCTION OF PROFESSIONAL PHOTOGRAPHS
6,751,320
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