Teletext number tv#

Normally the pages are grouped in magazines composed (up to a maximum) of 100 pages with a homogeneous content: For example pages 100 to 199 make up the magazine number 1 and can contain the news, those from 200 to 299 make up the magazine number 2 and are reserved for sport, and so on. Also the criteria for associating the pages to their contents can be different from one broadcaster to another. The pages can be added, modified or removed from the teletext cycle based on the editorial requirements of the broadcaster.

The pages are transmitted cyclically, continually, one after the other, in particular fragments of the television signal, more precisely in the moment in which the electronic paintbrush that drafts the image on the screen is interrupted in the passage from one image to another, in the so-called vertical blanking interval. The teletext is made up of a group of pages, each identified with a 3 figure number, composed of a group of alphanumeric and graphic characters on a matrix of 24 lines and 40 columns. In Italy it has a trade name that varies according to the provider who distributes it, for instance 'Televideo' for RAI, 'Mediavideo' for Mediaset, 'La7video' for La7, and so on.

Teletext number tv#

вЂњ TeletextвЂќ is the technical name given to the well known service for the transmission of information visualized on a tv screen as text pages and simple graphics.