This invention provides technology (including apparatus, method, software, and/or data structures) to broadcast data from one or more content providers via one or more broadcast channels to one or more content recipients. This technology meets the different needs of the three major stakeholdersthe content...http://www.google.com/patents/US20020023270?utm_source=gb-gplus-sharePatent US20020023270 - Three part architecture for digital television data broadcasting
