Abstract:This book is about teletext: a "broadcast service using several otherwise unused scanning lines (vertical blanking intervals) between frames of TV pictures to transmit information from a central data base to receiving television sets" (http://www.nielsentam.tv/glossary). To the contributors to this book and possibly to many readers, this technical definition will feel out of place as it obscures the rich history of a formidable if forgotten medium. Nevertheless, it is the basic technology of teletext that sets… Show more
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