Telidon Videotext Decoder
Telidon videotext decoder. Source: Tom Alföldi; Ingenium 1985.0380
Before there was the internet, there was Telidon—a television-based information-sharing system that allowed users to browse computer databases. Telidon consisted of a terminal, a keyboard, and a television. Users plugged this decoder into their telephone or cable service and, using spare bandwidth, browsed services such as news, shopping, banking, community bulletins, and others. While Telidon featured superior graphics for its time, this Canadian government program failed to gain traction, in large part because the system was expensive and difficult to navigate. Nevertheless, the Telidon program, which ran between 1978 and 1985, developed new standards and protocols for computer graphics, and helped researchers better understand the user experience.
Telidon operated in either a one-way teletext or two-way videotext mode.
Telidon videotext decoder, back view. Source: Tom Alföldi; Ingenium 1985.0380
The Telidon system’s menu screen. Source: Communications Research Centre Canada
The Telidon system in use. Source: Communications Research Centre Canada
The Telidon system offered new learning opportunities. Source: Communications Research Centre Canada
The Telidon system’s opening screen. Source: Communications Research Centre Canada
Author(s)
Ingenium – Canada's Museums of Science and Innovation
Ingenium represents a collaborative space where the past meets the future in a celebration of creativity, discovery, and human ingenuity.
Telling the stories of people who think differently and test the limits, Ingenium honours people and communities who have shaped history — and inspire the next generation.
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