Method and apparatus for editing and reading edited...

Method and apparatus for embedding data, including watermarks, i

Method and apparatus for encryption

Method and apparatus for placing data onto plain paper

Method and apparatus for protecting visual information with prin

Method and apparatus for scrambling and unscrambling bar code sy

Method and apparatus for secure ultrafast communication

Method and apparatus of encryption of optical images

Method and apparatus to defeat composite video signal...

Method and system for preventing reproduction of documents

Method and system for preventing reproduction of...

Method for generating an improved carrier for use in an image da

Method for protecting content using watermarking

Method of and apparatus for manipulating digital data works

Method of configuring access and security code

Method of preventing videotape piracy

Method of videotext information encryption and security...

Multi-section decoding lens

Multiple transform utilization and applications for secure...