by Tuyen H
Recently, Televisions have been enhanced many new features base on the Internet standard. Television manufactories adopt web standards such as W3C and CSS to their products, so customers can customize their TV program likes a computer. This technology calls LINE Profiles. The profile includes a subset of XHTML, CSS, and ECMA Script that support more data applications for TV. While XHTML support the TV background, CSS use to format the layout of the TV’s screen. ECMA Script includes the browser pseudo object functions such as communication using TCP/IP. In this article, the authors also list five requirements to link the TV program and LINE document received from the server:
1. Support a common control command to enable and disable datacasting (e.g. a datacasting button in the remote controller).
2. The Linear TV channel being transmitted must include a hyperlink descriptor in the SI (Service Information) tables.
3. When the datacasting button is pressed, the user agent requests the LIME document to the hyperlink address defined in 2.
4. The user agent receives the LIME content (document) which includes the ID of the Linear TV channel from the LIME content.
5. The screen is rendered with both the TV program and the enhanced datacasting content.
In conclusion, web base with XHTML, CSS, and ECMA Script is a lightweight solution for bring the Internet to TV program.