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by joezydeco
788 days ago
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US televisions didn't have support for the blanking interval data and GUI, and it never got added to the NTSC standards. For a brief period in the 1980s a few companies tried to provide teletext service, either over modem or a UHF decoder to a home computer or - more bizarrely - as a read-only presentation done overnight when no other scheduled programming was being shown. Keyfax in Chicago: https://www.youtube.com/watch?v=Bgs0kbxo68w Keycom home service: https://iml.jou.ufl.edu/carlson/history/Keycom.htm |
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That said, there were several other competing standards offered at the same time including https://en.wikipedia.org/wiki/Electra_(teletext)
The issue of course - like everything else with standards adoption in the states, the decoder wasn't mandated to be included with TV sets.