DIGITAL (ON SCREEN) MONOCHROMATIC WATERMARK

METHODS AND SYSTEMS FOR WATERMARKING DIGITAL DATA

WATERMARKS FOR TEXT DOCUMENTS

Systems and methods for token authentication

Generating signal bearing art using Stipple, Voronoi and Delaunay methods and reading same

Method and apparatus of DRM systems for protecting enterprise confidentiality

Automatically attaching optical character recognition data to images

Device and method for inserting identification code for tracking duplicated image

WATERMARK EMBEDDING AND EXTRACTING METHOD FOR PROTECTING DOCUMENTS

Generating signal bearing art using stipple, Voronoi and Delaunay methods and reading same

Method for generating variable guilloche patterns, implementing device and identification document comprising such patterns

Generating signal bearing art using stipple, voronoi and delaunay methods and reading same

Digital watermark embedding method and extraction method, digital watermark embedding apparatus and extraction apparatus, and digital watermark system

Automatically attaching optical character recognition data to images

Watermark embedding and extracting method for protecting documents

Systems and methods for rendering a secure document with a text selection capability

Systems and methods for steganography based on text fonts

Method and apparatus for embedding and extracting text watermark

Method and apparatus of DRM systems for protecting enterprise confidentiality

Dynamic digital watermark

Signal encoding outside of guard band region surrounding text characters, including varying encoding strength

Method and device for generating a privatized electronic image for a plurality of electronic documents

Method for producing and recognizing barcode information based on voice, and recording medium

Method for watermarking the text portion of a document

Digital watermark feature for device to device duplication of a digital receipt

Dark to light watermark without special materials

METHODS FOR EMBEDDING AND EXTRACTING A WATERMARK IN A TEXT DOCUMENT AND DEVICES THEREOF

Method for water-marking digital books

Embedding information in paper forms

Computer-based system and method for adding variable security data in printing operations

Instrument and Document Authentication System

Sensing data from physical objects

Digital identification document

Dynamic digital watermark

Dynamic digital watermark

Selecting information embedding method affecting correct interpretation based on effect of embedded information on content data

Method and electronic device for controlling content integrity using numerical data

Security element and method to inspect authenticity of a print

AUDIBLE DOCUMENT IDENTIFICATION FOR VISUALLY IMPAIRED PEOPLE

Data certification system, server device, client device, publishing server, and data certification method

Watermarking image block division method and device for western language watermarking processing

Method for marking graphical elements and method for detecting said marking in a graphical element

Embedding and detecting hidden information

Sensing data from physical objects

Unauthorized text alteration prevention with contour following background patterns

Watermarking electronic text documents

Image processing apparatus embedding additional information in document data

Method for embedding messages into structure shapes

Orientation free watermarking message decoding from document scans

Electronic watermark embedding device, electronic watermark detecting device, and programs therefor

DOCUMENT PROCESSING APPARATUS AND DOCUMENT PROCESSING METHOD

Document processing apparatus and document processing method

Embedding and detecting watermarks based on embedded positions in document layout

Document processing apparatus and document processing method

Image processing apparatus, image processing method, computer-readable medium and computer data signal

IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, PROGRAM FOR EXECUTING IMAGE PROCESSING METHOD, AND STORAGE MEDIUM FOR STORING PROGRAM

Embedding and detecting hidden information

Image processing apparatus and method of controlling the same

Digital watermark embedding and detection

Sensing data from physical objects

Electronic watermark embedment apparatus and electronic watermark detection apparatus

DIGITAL WATERMARKING SYSTEM ACCORDING TO PIXEL BRIGHTNESS VALUE AND DIGITAL WATERMARKING METHOD

EMBEDDING AND DETECTING WATERMARKS

Digital watermarking system according to matrix margin and digital watermarking method

DIGITAL WATERMARKING SYSTEM ACCORDING TO PIXEL DISPLAY PROPERTY AND DIGITAL WATERMARKING METHOD

Character and vector graphics watermark for structured electronic documents security

Watermarking electronic text documents

Methods and systems of watermarking multimedia data using mobile communication terminals

Anti-leak digital document marking system and method using distributed ledger

Anti-leak digital document marking using distributed ledger to generate a code uniquely corresponding to a unique value for each digital document

Anti-leak digital document marking system and method using distributed ledger

Anti-leak digital document marking system and method using distributed ledger

Anti-leak digital document marking system and method using distributed ledger

Watermarking method for high-definition map based on invisible characters

Anti-leak digital document marking system and method using distributed ledger

Reducing nonvisual noise byte codes in machine readable format documents

Embedding 3D information in documents