Further Reading
- World System Teletext Technical Specification, UK Department of Trade and Industry, 1985. Also retitled as World System Teletext and Data Broadcasting System Technical Specification, various revisions until 1989.
- CCIR 653 (now ITU-R BT.653) set of four standards for teletext systems worldwide. Adopted 1986. Revisions 2 and 3 were published in 1993 and 1998. WST was formalised by this standard as CCIR Teletext System B.
- Enhanced Teletext specification ETS 300 706 (ETSI, 1997); Version 1.2.1, April 2003. Current European standard for CCIR Teletext System B.
Read more about this topic: World System Teletext
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