Teletekst

teletekst

What does teletext stand for?

Teletext. Teletext (or broadcast teletext) is a television information retrieval service created in the United Kingdom in the early 1970s by the Philips Lead Designer for VDUs, John Adams. Teletext is a means of sending pages of text and simple geometric shapes from mosaic blocks to a VBI decoder equipped television screen by use...

When was the first teletext system developed?

In France, where the SECAM standard is used in television broadcasting, a teletext system was developed in the late 1970s under the name Antiope. It had a higher data rate and was capable of dynamic page sizes, allowing more sophisticated graphics. It was phased out in favour of standard teletext in 1991.

What is teletext in VBI?

Teletext. Teletext is a means of sending pages of text and simple geometric shapes from mosaic blocks to a VBI decoder equipped television screen by use of a number of reserved vertical blanking interval lines that together form the dark band dividing pictures horizontally on the television screen.

What is Teletext video programming?

This is used in relation to the Video Programming by Teletext (also known as startext) system which allows users to program their videos for recording by simply selecting the program on a teletext page with a listing of programs.

How does teletext work?

Teletext sends data in the broadcast signal, hidden in the invisible vertical blank interrupt area at the top and bottom of the screen. The teletext decoder in the television buffers this information as a series of pages, each given a number.

What is the difference between teletext and unsourced?

Unsourced material may be challenged and removed. Teletext, or broadcast teletext, is a standard for displaying text and rudimentary graphics on suitably equipped television sets. Teletext sends data in the broadcast signal, hidden in the invisible vertical blanking interval area at the top and bottom of the screen.

What is teletext in VBI?

Teletext. Teletext is a means of sending pages of text and simple geometric shapes from mosaic blocks to a VBI decoder equipped television screen by use of a number of reserved vertical blanking interval lines that together form the dark band dividing pictures horizontally on the television screen.

What is Public teletext information?

Public teletext information services were introduced by major broadcasters in the UK, starting with the BBC s Ceefax service in 1974. It offered a range of text-based information, typically including news, weather and TV schedules.

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