Teletext systems the country being closed captioning, TV Guide On Screen, and Extended Data Services (XDS). A version of the European teletext standard designed to work with the NTSC television standard used in North America was first demonstrated in the US in 1978 by station KSL in Salt Lake City, Utah, premiered a teletext service using Ceefax. They were followed by American television network CBS, which decided to try both the British Ceefax and French Antiope software for preliminary tryouts for a teletext service, using station KMOX (now KMOV) in St. Louis, Missouri as a testing ground. CBS decided on Antiope and
ORACLE (teletext) By the mid-2000s, however, all of the Jobfinder services had ended. For a short period in 1987, prior to the start of 24-hour broadcasting on ITV, a selection of teletext pages were broadcast in-vision prior to the start of TV-am. These pages mostly consisted of news and information about TV-am. ORACLE began to disappear at 23:31:09 on 31 December 1992, with the outer border of pixels turning black. This process continued until 23:55:55 when only a white square was left, with the text ORACLE gone 1978-1992. It was then replaced by the service from Teletext Ltd. ORACLE did not carry