ExtraVision was a teletext service created and operated by the American television network CBS in the early to mid-1980s.[1][2][3][4] It was carried in the vertical blanking interval of the video from local affiliate stations of the CBS network. It featured CBS program information, news, sports, weather, even subtitling[5] for CBS programming (much like page 888 in British-based World System Teletext, and American line 21 closed-captioning). ExtraVision could also have its pages customized by the local affiliate station carrying it, for such things as program schedules, local community announcements, and station promotions. WGBH Boston, a pioneer in assisting the deaf and hard-of-hearing with closed captioning, also provided content for those audiences to ExtraVision and assisted in providing captioning for CBS programming via ExtraVision.[6]
 ExtraVision index page, 1984 | |
| Developer | CBS |
|---|---|
| Type | Teletext |
| Launch date | 1983 |
| Discontinued | 1988 |
| Platform(s) | NABTS |
| Status | Discontinued |
CBS had begun tests in 1979 at their St. Louis station KMOX-TV (currently KMOV) using the French Antiope system,[7] and again in 1981 in the Los Angeles area on KNXT (currently KCBS), in a joint test with PBS station KCET.[5][8][9][10] The full ExtraVision service began in April 1983[5][11][12] on CBS affiliate WBTV in Charlotte, NC,[2][13] and went nationwide in 1984.
One issue was that, due to CBS' heavy emphasis on the ExtraVision service, it did not offer line 21 closed-captioning for the hearing impaired, unlike ABC, NBC or PBS (ABC never offered teletext services, while only certain PBS stations, including the aforementioned KCET and WGBH, experimented with teletext). Some believed that CBS' opposition to line-21 services was so large, they even wanted to strip captioning from commercials to be run during programming. The result was nationwide protests against CBS by the National Association of the Deaf, with people picketing the studios of CBS and affiliate stations; one child protested in Grand Rapids, MI with a sign reading "Please caption for my Mom and Dad".[14][15]
The situation was further compounded in August 1982, when NBC ceased to offer closed-captioning on account of decreased demand. While the NAD's Phil Bravin, chairman of the NAD's newly-formed TV Access Committee, was able to persuade NBC to resume captioning, he continued to meet with resistance by CBS; after an unproductive meeting with then-head of CBS affiliate relations, Tony Malara, Bravin promised to "see you on the streets of America". CBS ultimately relented in March 1984, promising three hours of closed-captioned programming starting that fall.[16][17][18]
Due to the service using the NABTS protocol, which required a quite expensive decoder to receive the service, and the FCC not choosing to require TV manufacturers to integrate teletext into their sets or choose between either NABTS or the BBC and IBA's World System Teletext (used by Electra and several other services),[19] ExtraVision eventually began to experience cutbacks, with several staffers laid off in May 1986; the production of news content was outsourced to AP/TMS Media Services (a joint venture between the Associated Press and the Tribune Company).[20] Also, most of the local CBS affiliates carrying the ExtraVision service did not bother to invest in the computer equipment required to customize pages to carry locally oriented information on the service; only WBTV, WIVB-TV in Buffalo, and then-CBS affiliate KSL-TV in Salt Lake City (which had been independently testing and using teletext beginning in 1978, and continued into the early 1990s[21]) provided localized information.[22]
ExtraVision was discontinued in 1988,[7][23][24] three years after NBC Teletext had also been abandoned by NBC.
References
edit- ^ Graziplene, Leonard R. (2000). Teletext: Its Promise and Demise. Lehigh University Press. ISBN 9780934223645.
- ^ a b Renner-Smith, Susan (September 1984). "Teletext decoder for network-TV 'magazine'". Popular Science. p. 40.
- ^ Ellers, Ed. "TELETEXT GALLERY - TELETEXT AROUND THE WORLD - UNITED STATES OF AMERICA". The Teletext Museum.
- ^ Shafer, Jack (2009-01-06). "How the newspaper industry tried to invent the Web but failed". Slate Magazine. Retrieved 2022-12-15.
- ^ a b c Technology, United States Congress House Committee on Science and Technology Subcommittee on Science, Research, and (1984). Developing Technologies for Television Captioning: Benefits for the Hearing Impaired : Hearing Before the Subcommittee on Science, Research, and Technology of the Committee on Science and Technology, U.S. House of Representatives, Ninety-eighth Congress, First Session, November 9, 1983. U.S. Government Printing Office. pp. 35, 36.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ Technology, United States Congress House Committee on Science and Technology Subcommittee on Science, Research, and (1984). Developing Technologies for Television Captioning: Benefits for the Hearing Impaired : Hearing Before the Subcommittee on Science, Research, and Technology of the Committee on Science and Technology, U.S. House of Representatives, Ninety-eighth Congress, First Session, November 9, 1983. U.S. Government Printing Office.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ a b Carlson, David. "ExtraVision". David Carlson's Online Timeline. Retrieved 2022-12-15.
- ^ Marketing Communications. United Business Publications. 1981. pp. 71, 72.
- ^ Gingras, Richard (1980). Broadcast Teletext. PBS.
- ^ "KNXT, KCET raise curtain on teletext" (PDF). World Radio History. 13 April 1981. Retrieved 4 August 2023.
- ^ Hirsh, Phil (April 11, 1983). "FCC Allows TV Broadcasters to Offer Teletext". Computerworld. p. 14.
- ^ Ap (1983-04-05). "CBS STARTS ITS TELETEXT SERVICE". The New York Times. ISSN 0362-4331. Retrieved 2022-12-15.
- ^ "Timeline - WBTV Chronology". WBTV. March 27, 2009. Retrieved 2022-12-15.
- ^ "Deaf picket CBS stations over captioning - UPI Archives". UPI. Retrieved 2023-07-17.
- ^ "THE CITY; CBS Captioning Urged by the Deaf". The New York Times. Associated Press. 1982-05-20. ISSN 0362-4331. Retrieved 2023-07-17.
- ^ "Hitting the Books: The decades-long fight to bring live television to hearing impaired viewers". Engadget. 29 January 2022. Retrieved 2023-07-17.
- ^ "CAPTION UPDATE". The Silent Informer. 1 April 1984. Retrieved 17 July 2023.
- ^ "Affiliate exhorted to support Extravision" (PDF). World Radio History. Retrieved 4 August 2023.
- ^ "Battle over teletext" (PDF). World Radio History. 21 March 1983. Retrieved 4 August 2023.
- ^ "CBS makes changes, cuts, at Extravision teletext service" (PDF). World Radio History. 19 May 1986. Retrieved 4 August 2023.
- ^ Hollstein, Milton (1992-03-30). "KSL'S TELETEXT OFFERINGS ARE PROVING PROFITABLE". Deseret News. Retrieved 2023-08-04.
- ^ "Decoder problems plague NBC's try at teletext" (PDF). World Radio History. 17 December 1984. Retrieved 4 August 2023.
- ^ Gillies, Donald (1989). Technological Determinism In Canadian Telecommunications: Telidon Technology, Industry and Government. Ryerson Polytechnical Institute. p. 6. doi:10.22230/cjc.1990v15n2a549 (inactive 1 November 2024).
{{cite book}}: CS1 maint: DOI inactive as of November 2024 (link) - ^ Downey, Gregory J. (2008-02-25). Closed Captioning: Subtitling, Stenography, and the Digital Convergence of Text with Television. JHU Press. p. 224. ISBN 978-0-8018-8710-9.
