Project list

Teletext

1. Init
2. The Beginning

Init

Time:

17.2.2009 11:19:25AM

Description:

With this device we've added teletext support to one very old TV.
Data is obtained from composite video signal from TV, and picture is sent via RGB. All data is traveling through SCART.
It's based on teletext chip from some old TV card which does the most of the work.
Unfortunately, it's now retired because we no longer have analog TV.

Schematics:

RGB amp

Serial communication

ttx interface

Central part

User interface connections

Power supply

Pictures:

Front view

Back view

Motherboard

PSU, IR, LCD

Teletext amplifier and module

Without module

Teletext module

The Beginning

Time:

17.2.2009 12:00:10PM

Description:

This is how it all started...
I made most of hardware and drivers, and my dad made IR support and improved user interface.

Pictures:

First, I've developed and tested communication with teletext controller.

First received teletext page on 486 laptop.

First blanking test.

IR receiver

First version of the RGB amplifier.

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