TSODA (Transport Sync OSD {On Screen Display}, DES {Data Encryption Standard} Audio, Encryption/Decryption Chip.) - TSODA is former TCI's (later AT&T Broadband and now Comcast) proprietary digital device for encrypting and decrypting services.

Access Control System

Conditional Access, definition of, links and related articles

Interactive TV Platform

Library

Middleware for TV, System or Platform software, Middleware Layer

Open Standard(s) – (Open Architecture)

Walled Gardens, TV based Interactive Walled Gardens