Method of securing the playback of a DVD-ROM via triggering...

Methods and apparatus for digital content protection

Methods and apparatus for distributing digital content

Methods and apparatus for distributing digital content

Methods and apparatus for persistent control and protection...

Methods and apparatus for persistent control and protection...

Methods and apparatus for protecting information content

Methods and apparatus for protecting information content

Methods and apparatus for protecting information content

Methods and apparatus for protecting signals transmitted...

Methods and apparatus for providing a partial dual-encrypted...

Methods and apparatus for secure distribution of program...

Methods and apparatus for selectively reproducing segments of br

Methods and apparatuses for determining scrambling codes for...

Methods and system for ensuring royalty payments for data...

Methods and systems for cryptographically protecting secure...

Microprocessor having instruction set extensions for decryption

Microprocessor suitable for reproducing AV data while protecting

Modulation of dynamical systems for communication

Motion picture anti-piracy coding