This specification has been approved by the ITU as an international standard. The three components are tied together with DOM, the Document Object Model. More specifically, it is the use of the digital settop box, cable plant, head-end, and backbone Internet works to exchange funds for goods or services. E-commerce is typically conducted by transmitting secure transactions across a data network. A feature that displays all of the current programming available to the viewer.
Information usually includes channel location, broadcast time and a short description.
To decipher the message, the receiver of the encrypted data must have the proper decryption key or device. In traditional encryption schemes, the sender and the receiver use the same key to encrypt and decrypt data. Head-end equipment receives satellite and local broadcast TV signals and converts them to a form that can travel down coaxial cable to subscribers. The application that allows users to search and browse television listings, as well as providing functionality such as favorite channels, parental control, and customization of listings related functions. Interactive Television - Interactive television provides better, richer entertainment and information, blending traditional TV watching with the interactivity of a personal computer.