this post was submitted on 29 Mar 2025
188 points (99.0% liked)
retrocomputing
4625 readers
3 users here now
Discussions on vintage and retrocomputing
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Are you referring to Teletext, or something else?
It was Intercast
That reminds me. They did used to broadcast software over teletext over TV https://teletext.mb21.co.uk/gallery/ceefax/telesoftware/
There was also a system where some TV screen pixels were used to send data, but I'm struggling to remember how you were supposed to get it into the computer.
I suspect that you needed to build some light sensor with a serial cable, that you held to the screen, but I'm not sure.
This was in the Netherlands, not sure if it was done elsewhere.
I had heard of this but your comment sent me searching for more info. I think you might be referring to Visicode.
https://archive.org/details/PersonalComputerWorld1985-07/page/286/mode/2up?q=visicode
https://www.youtube.com/watch?v=xxo1Gs46ti0
https://archive.org/details/PersonalComputerWorld1985-08/page/194/mode/2up?q=visicode
That looks interesting, but it's not ringing any bells.