Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
1. micronas has teletext decoder solution, u may go to its website to see it's reference design. www.micronas.com
2. independent TV design : u may need to build a external box, which contains teletext decoder+video decoder+ video encoder, its output format can be s-video or composite.
3. customed tv design: u need to understand tv's internal circuit design first. then build up a board installed into tv. but i think this is more difficult and hard to it.