Antiope (teletext) СПОРТ 76 exposition in Moscow. Antiope ceased to be used for broadcast teletext in the early 1990s, before teletext became popular in France. It was replaced by European standard World System Teletext. However, the Antiope-derived Minitel remained in use until 2012. A fundamental difference in technical philosophy between Antiope and the Ceefax teletext system developed by the BBC stemmed from the fact that Antiope was developed by telecommunications engineers, while Ceefax was developed by television engineers. The television engineers created a system which filled the screen with data at a fixed, predictable rate; in contrast Antiope was constructed like a
Electra (teletext) operation. A few other services were offered by some large-market TV stations in the US throughout the 1980s, such as "Metrotext" from KTTV in Los Angeles and "KeyFax" from WFLD in Chicago. Electra also carried another teletext service on its higher-numbered pages, a service called "Tempo". Tempo mainly carried sports (and other miscellaneous) information on its pages. At the time of Electra's closing in 1993, it was the only existing teletext service in the USA. Electra (teletext) Electra was a teletext service in the United States that was in operation from the early 1980s up until 1993, when it was