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Teletext (or "broadcast teletext") is a television information retrieval service developed in the United Kingdom in the early 1970s. It offers a range of text-based information, typically including national, international and sporting news, weather and TV schedules. Subtitle (or closed captioning) information is also transmitted in the teletext ...
Teletext was created in the United Kingdom in the early 1970s by John Adams, Philips' lead designer for video display units to provide closed captioning to television shows for the hearing impaired. [6] Public teletext information services were introduced by major broadcasters in the UK, [7] starting with the BBC's Ceefax service in 1974. [8]
NBC Teletext was a teletext service provided by the American TV network NBC from 1981 to 1985, based on the NABTS standard. [1] [2] [3] [4]Initial trials started in Los Angeles in 1981. [5]
FourText, originally called 4-Tel, was first run in conjunction with ORACLE, as an auxiliary teletext provider for Channel 4 from 1982. 4-Tel occupied pages 410-469 within ORACLE's page space. When ORACLE lost its licence and was replaced by Teletext Ltd in 1993, 4-Tel moved to its own page space on pages 300-399 (effectively its own magazine).
World System Teletext ( WST) is the name of a standard for encoding and displaying teletext information, which is used as the standard for teletext throughout Europe today. It was adopted into the international standard CCIR 653 (now ITU-R BT.653) of 1986 as CCIR Teletext System B. [1]
Ceefax (/ ˈ s iː f æ k s /) was the world's first teletext information service and a forerunner to the current BBC Red Button service. Ceefax was started by the BBC in 1974 and ended, after 38 years of broadcasting, at 23:32:19 BST (11:32 PM BST) on 23 October 2012, in line with the digital switchover being completed in Northern Ireland.
MediaCorp Teletext was a Singaporean teletext information service provided by MediaCorp.It was carried on MediaCorp's Channel 5, Channel 8 and Channel NewsAsia.On top of the standard information carried by most teletext providers, it also carried information unique to Singapore, such as COE and ERP rates, announcements from selected ministries in Singapore and lottery results.
First teletext service in the Czech Republic was launched on 1 May 1988 under Czechoslovak Television. [2] It was inspired by German and Austrian teletexts. [3] Czech Television eventually started to provide teletext services for both its channels - ČT1 (Teletext ČT) and ČT2 (Teletext Express). When ČT 4 Sport was launched it received its ...