Teletext 2016, the Teefax teletext service was launched in the United Kingdom to coverage by the BBC, ITV and others. Using a Raspberry Pi computer card as a set-top box, it feeds its service to standard televisions. Teefax content is a mix of crowdsourcing, syndication and contributions from media professionals who contributed heavily to broadcast teletext services. Teefax is also syndicated to a web viewer. The systems were originally incompatible; Ceefax displayed pages of 24 lines with 32 characters each, while ORACLE offered pages of 22 lines with 40 characters each. In other ways the standards overlapped; for instance, both used
Teletext of decoder circuitry is sometimes marked on televisions as CCT (Computer-Controlled Teletext), or ECCT (Enhanced Computer-Controlled Teletext). Besides the hardware implementations, it's also possible to decode teletext using a PC and video capture or DVB board. Adoption in the United States was hampered due to a lack of a single teletext standard and consumer resistance to the high initial price of teletext decoders. Throughout the period of analog broadcasting, teletext or other similar technologies in the US were practically non-existent, with the only technologies resembling such existing in the country being closed captioning, TV Guide On Screen, and Extended Data