At 07:43 21/03/98 +1100, you wrote:
>When I talked to the designer of the Mattel videotext system, I was confused
>and mentiioned this piggybacking on TV signals in the blank area, and he was
>kinda amused that I would confuse videotext with TELEtext. Videotext had
>dedicated phone numbers your system would ring up. Teletext was piggybacked
>on TV signals.
Yes, they are two different services.
Here in Italy the Videotext service is called "VIDEOTEL" and works using the
Teletel/Prestel standard with speed 75/1200 baud.
The Teletext service broadcasted from RAI is called "TELEVIDEO":the signal
is inserted in the TV frames and can be seen with a decoder. The
informations are divided in pages (capacity abt. 990 per TV channel)
regarding many topics: from weather forecasts to news, tv programs schedule,
and other info that can be recalled with the remote control.
Some broadcasters uses it as an economic "one way" data transmission
(Telesoftware). With a special pc-board connected directly with the TV
antenna, is possible to download
files transmitted as multiple pages (E.G. the price updates for the the
pharmacies).
Ciao
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Received on Fri Mar 20 1998 - 15:17:50 GMT