You're going to have fun with this one.....
In order to get teletext pages into a TV signal, you'll need to insert
data into the VBI(Vertical Blanking Interval - lines 7 - 21) of a TV
signal. This requires a special databridge to perform this task. If you
ask a local TV station, they may have some analogue databridges they are
throwing away (MRG CT800/ATP600). You can talk to the databridge via
RS232/RS422. Have a look at http://www.mrgsystems.co.uk/
If your interested, teletext subtitles are on line 20 of a TV signal.
In all honesty you'll find it far easier to have a PC generate
webpages/slideshow type thingy and use the TV out of the graphics card.
You could use an old VHS to act as an RF modulator for the aerial system.
Hope that helps.
Chris
--
Chris
***************************************************************************
E Mail Chris@glovercc.clara.co.uk
WWW
http://www.glovercc.clara.co.uk
Someday, we'll look back on this, laugh nervously and change the subject.
-Anon
On Fri, 10 Oct 2003 kpwatson@pop3.ukfsn.org wrote:
> Anyone know anything about teletext systems?
>
> Have a friend who runs a small hotel/boarding house in the west country.
> He has a TV in each room the can display teletext pages and they run off
> a common aerial feed (analogue not digital).
>
> We were kicking around the idea of him setting up his own set of teletext
> pages and feeding in to this set up.
>
> I've done a quick Google but it's either people trying to sell teletext
> services or hardware. Can't seem to find much basic info.
>
> Anyone know of some good reference sites?
>
> Anyone know what sort of software/hardware would be required (Linux based
> if possible)?
>
> Keith
>
> _______________________________________________
> main@lists.alug.org.uk
>
http://www.alug.org.uk/
>
http://lists.alug.org.uk/mailman/listinfo/main
> Unsubscribe? See message headers or the web site above!
>
>
>
