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Technical Specifications of ITU-R Teletext Systems

Technical Specifications of ITU-R Teletext Systems
Edition of 1999
Teletext systems provide the means to supplement an analogue television broadcast with digitally coded data signals carried in the vertical interval. The data signals can be displayed on the viewers receiver as printed text or diagrams, or possibly more elaborate multimedia. This Handbook currently in use worldwide as defined in ITU-R Recommendations. They are described in four Sections in a similar way, so that readers can understand the differences and similarities.

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