Date   : Wed, 20 Dec 2006 23:42:51 +0000
From   : robert@... (Rob)
Subject: teletext - was: Curse of the long TUBE cable

At 22:53 20/12/2006, David Hunt wrote:


>Sounds like a nice hairy project for someone! A box that modulates a
>Teletext signal from a embedded PIC/FPGA/CPU board etc.
[snip]

>I'd pay ?50 for one of these, I could host the site and write the data
>scavenging software if someone comes up with the hardware. Worth a Google
>around to see if someone's already done it, though.

A google for "teletext generator" brought this up on #1 slot:
http://www.fab-online.com/eng/teletext/basic/dg.htm
"FAB Teletext Data Generator is used for 
transmission of teletext and teletext subtitles.

FAB Teletext Data Generator is delivered as a 19? 
1U unit with analogue & SDI video in/out BNC 
connectors for broadcast quality teletext 
insertion. A powerful client/server database is 
included and can be accessed from Teletext 
Editing terminals via TCP/IP and modem/ISDN"

I suspect it costs a tad more than ?50 though ...

A Long time ago, back when the beeb was still in 
good use, I did try writing a program to actually 
generate teletext on the beeb itself.  Just 
adjusted the screen up so the top couple of lines 
were in the right area, and poked appropriate 
data to them.  Unfortunately the only teletext tv 
I had access to was at the other end of the flat, 
so, even with an extra long cable, it was a  bit 
of a pain testing it.  I gave up quite quickly.

Rob