Macro-block based content replacement by PID mapping

Menu-driven television program access system and method

Message delivery method for interactive televideo system

Metadata extraction and re-insertion and improved...

Metadata mapping to support targeted advertising

Metadata mapping to support targeted advertising

Method and apparatus for designating a preferred source to...

Method and apparatus for multiplexing separately-authored...

Method and apparatus for presenting content of images

Method and apparatus for providing interactive media...

Method and apparatus for providing on-demand electronic...

Method and apparatus for providing personalized...

Method and apparatus for providing subsidiary data...

Method and apparatus for providing voice/unified messaging...

Method and apparatus for routing confidential information

Method and apparatus for switching targeted advertisements...

Method and apparatus for synchronous presentation of video...

Method and apparatus for targeted advertising

Method and apparatus for targeted advertising

Method and apparatus for transmission receipt and display of...