Patent Portfolio

EMBEDDING DIGITAL WATERMARKS IN SPOT COLORS

6,993,149

SECURITY ARRANGEMENTS FOR PRINTED DOCUMENTS

6,987,861

PRINTING MEDIA AND METHODS EMPLOYING DIGITAL WATERMARKING

6,985,600

TAMPER-RESISTANT AUTHENTICATION TECHNIQUES FOR IDENTIFICATION DOCUMENTS

6,978,036

SYNCHRONIZING WATERMARK DETECTORS IN GEOMETRICALLY DISTORTED SIGNALS

6,975,745

WATERMARKING WITH SEPARATE APPLICATION OF THE GRID AND PAYLOAD SIGNALS

6,973,197

CONSUMER DRIVEN METHODS FOR ASSOCIATING CONTENT IDENTIFIERS WITH RELATED WEB ADDRESSES

6,970,886

SELF VALIDATING SECURITY DOCUMENTS UTILIZING WATERMARKS

6,970,573

EMULSION PRODUCTS AND IMAGERY EMPLOYING STEGANOGRAPHY

6,968,057

ELECTRONIC COMMERCE USING OPTICAL INPUT DEVICE

6,965,873

ROUTING NETWORKS FOR USE WITH WATERMARK SYSTEMS

6,965,683

DATA TRANSMISSION BY WATERMARK PROXY

6,965,682

RECOVERABLE DIGITAL CONTENT DEGRADATION: METHOD AND APPARATUS

6,963,884

TIME AND OBJECT BASED MASKING FOR VIDEO WATERMARKING

6,961,444

WATERMARKING A CARRIER ON WHICH AN IMAGE WILL BE PLACED OR PROJECTED

6,961,442

HIDING ENCRYPTED MESSAGES IN INFORMATION CARRIERS

6,959,386

WATERMARK ENCODING AND DECODING IN PERIPHERALS AND PERIPHERAL DRIVERS

6,952,485

GEOGRAPHICALLY WATERMARKED IMAGERY AND METHODS

6,950,519

CELL PHONES WITH OPTICAL CAPABILITIES, AND RELATED APPLICATIONS

6,947,571

WATERMARK ENCODING USING ARBITRARY FEATURES

6,920,232

SUBSTITUTING INFORMATION BASED ON WATERMARK-ENABLED LINKING

6,917,691

MULTI-CARRIER WATERMARKS USING CARRIER MODULATED WITH AUXILIARY MESSAGES

6,915,002

ENHANCING EMBEDDING OF OUT-OF-PHASE SIGNALS

6,912,295

WATERMARKING A PAGE DESCRIPTION LANGUAGE FILE

6,899,475

STEGANOGRAPHIC DECODING WITH TRANSFORM TO SPATIAL DOMAIN

6,813,366