Re: Somebody know if in the US is somethink like teletext in europe
Code:
http://en.wikipedia.org/wiki/Teletext
North America
In the 1980s a similar system called Telidon was developed in Canada by the Department of Communications. It used a simple graphics language that would allow a more complex circuit in the TV to decode not only characters, but graphics as well. To do this, the graphic was encoded as a series of instructions (graphics primitives) like "polyline" which was represented as the characters PL followed by a string of digits for the X and Y values of the points on the line. This system was referred to as PDI (Picture Description Instructions). Later improved versions of Telidion were developed into NAPLPS.
Although there were numerous attempts to introduce NAPLPS services in North America, none of these were successful and eventually shut down. A number of special-purpose systems lived on for some time, similar to Prestel's lingering death, but the widespread rollout of internet access in the 1990s ended these efforts.
Nothing in this post is intended to replace common sense.
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