from the BBC are presented in Ceefax format in the web viewer. In 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. Digital teletext With the advent of digital television, some countries adopted the name "digital teletext" for newer standards, despite the older teletext standards' digital nature. Digital teletext is encoded with standards including MHEG-5 and Multimedia Home Platform (MHP). Other countries use the same teletext streams as before on DVB transmissions, due to the DVB-TXT and DVB-VBI sub-standards. Those allow the emulation of analogue teletext on digital TV platforms, directly on the TV or set-top box, or by recreating analog output, reproducing the vertical blanking interval data in which teletext is carried. Similar systems A closely related service is the Video Program System (VPS), introduced in Germany in 1985. Like teletext, this signal is also broadcast in the vertical blanking interval. It consists only of 32 bits of data, primarily the date and time for which the broadcast of the currently running TV programme was originally scheduled. Video recorders can use this information (instead of a simple timer) in order to automatically record a scheduled programme, even if the broadcast time changes after the user programmes the VCR. VPS also provides a PAUSE code; broadcasters can use it to mark interruptions and pause the recorders, however, advertisement-financed broadcasters tend not to use it during their ad breaks. VPS (line 16) definition is now included in the Programme Delivery Control (PDC) standard from ETSI. See also Antiope - French teletext standard (CCIR Teletext System A) NABTS – North American Broadcast Teletext Specification (CCIR Teletext System C) JTES - Japanese Teletext Specification (CCIR Teletext System D) NAPLPS – North American Presentation Level Protocol Syntax Park Avenue (teletext soap) Radio Data System Teletext character set Text semigraphics Digitiser InfoChammel References External links Broadcast Teletext Specification, September 1976 (scanned copy of original document, MS-Word and Postscript files) History of Teletext ORF (Austria) web-based Teletext service News in Focus: 40 Years of Teletext in Germany - by TARA Systems BBC Research & Development Legacy systems