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Miloslav Ciz 2023-03-04 15:27:22 +01:00
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teletext.md
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@ -6,4 +6,8 @@ Teletext is now pretty much obsolete technology that allowed broadcasting extrem
The principal difference against the [Internet](internet.md) was that teletext was [broadcast](broadcast.md), i.e. it was a one-way communication. Users couldn't send back any data or even request any page, they could only wait and catch the pages that were broadcast by TV stations (this had advantages though, e.g. it couldn't be [DDOSed](ddos.md)). Each station would have its own teletext with fewer than 1000 pages -- the user would write a three place number of the page he wanted to load ("catch") and the TV would wait until that page was broadcast (this might have been around 30 seconds at most), then it would be displayed. The data about the pages were embedded into unused parts of the TV signal.
The pages allowed fixed-width text and some very blocky graphics, both could be colored with very few basic colors. It looked like something you render in a very primitive [terminal](terminal.md).
The pages allowed fixed-width text and some very blocky graphics, both could be colored with very few basic colors. It looked like something you render in a very primitive [terminal](terminal.md).
## See Also
- [world broadcast](world_broadcast.md)