Teletext formed the basis for the World System Teletext standard (CCIR Teletext System B), an extended version of the original system. Meanwhile, the UK's General Post Office introduced the Prestel system using the same display standards but run over telephone lines using bi-directional modems rather than the send-only system used with televisions. Similar systems were subsequently introduced by other television broadcasters in the UK and mainland Europe in the following years. Also, paged subtitle (or closed captioning) information was transmitted using the same system. It offered a range of text-based information, typically including news, weather and TV schedules. Public teletext information services were introduced by major broadcasters in the UK, starting with the BBC's Ceefax service in 1974. Teletext was created in the United Kingdom in the early 1970s by John Adams, Philips' lead designer for video display units. In broad terms, it can be considered as Videotex, a system for the delivery of information to a user in a computer-like format, typically displayed on a television or a dumb terminal, but that designation is usually reserved for systems that provide bi-directional communication, such as Prestel or Minitel. The user can display chosen pages using their remote control.
#M1 teletext series#
The teletext decoder in the television buffers this information as a series of "pages", each given a number. Teletext sends data in the broadcast signal, hidden in the invisible vertical blanking interval area at the top and bottom of the screen. Teletext, or broadcast teletext, is a standard for displaying text and rudimentary graphics on suitably equipped television sets. A British Ceefax football index page from October 2009, showing the three-digit page numbers for a variety of football news stories
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