These frames contain up-to-date news, TV guides, chat, advertising, and other things that the broadcaster thinks may be of use to you.Possibly the most useful things provided by teletext are: You cannot ordinarily receive Program Delivery Control (PDC) with your computer.On the other hand, though, teletext is completely free.
Wir empfehlen Ihnen daher die Mobilversion von ARD Text. Am besten dann gleich ein Lesezeichen für die Mobilversion setzen - dann geht's beim nächsten Mal schneller.
Also, some things, such as the main index page, are broadcast more frequently than other pages (so people just turning on teletext don't see a blank screen for ages).
Also in the teletext signal is the TSDP (where the accurate clock information is taken from), and subtitles (if provided). Well, let's assume these extra things take a quarter of a page worth of data each, that's one less page every second - so it does factor into the time taken, even if only a little bit.
This is a special 'packet' of data in the teletext signal.
Its purpose is to inform your video recorder about what is currently being broadcast.