Teletext is a group of text pages transmitted with the normal television programme signal. These pages can be read with a TV set which has teletext function. First regular teletext transmissions were from BBC in Great Britain in the 1974.

Generically, one-way data transmission designed for widespread broadcasting of graphics and textual information for display on subscriber televisions or low-cost terminals.

Broadcast Videotex An on-screen text information service transmitted in digital formal using spare lines in the VBI of a TV signal.

A service provided by broadcasters, which allows the viewers at home to receive various information, e.g. programming information. The teletext signal is transmitted as digital data in the VBI.

A broadcasting service using several otherwise unused scanning lines (vertical blanking intervals) between frames of TV pictures to transmit information form a central data base to receiving television sets.

A system by means of which written information is superimposed on a television signal and broadcast. The signals, concealed in the blanking lines, activate a character gene­rator in the television set, which creates the characters and mixes them into the television picture when a specified teletext page is selected.

A method of transmitting information in the unused portion of the television video signal. If you have a television equipped with a teletext decoder you can select the desired information from menus through your remote control.

Generic name for systems, such as the BBC's Ceefax, which use 'spare' lines in the television signal to transmit information pages for home viewing. This word has been registered, and is now being used, as the trade name for the information service on ITV and Channel 4/S4C.

An electronic communications system in which printed text is broadcast by television signal to sets equipped with decoders.

Enables quick and convenient page access to the latest teletext information at the touch of a button on the remote commander.

Non-interactive data communications using spare capacity in television channels. For example, Oracle and Ceefax.

Textual and graphic information broadcast in the vertical blanking intervals between conventional video frames in television signals. It requires a special adapted.

Data service transmitted on TV lines not used for picture information, either utilising spare capacity or instead of video information.

Electronic information inserted into the unused parts of a television signal and decodable by an equipped television set.

Data transmitted along with TV broadcasts.

A one way broadcast transmission of information using part of information using part of Television signal's spare capacity. It enables a number of pages of information (text and basic pictorial material to be transmitted and received on a suitably adapted domestic TV receiver.

Data transmission system that enables users to obtain and display pages of alphanumeric or graphic information. The system uses television channels, FM radio broadcasting, phone line circuits or a combination of the three.

A group of text pages transmitted with the normal TV signal that can be read using a TV that has a teletext function. First regular teletext transmissions were from BBC in Great Britain in the 1974.

Broadcast service using several otherwise unused scanning lines (vertical blanking intervals) between frames of TV pictures to transmit information from a central database to receiving television sets.

a low-bandwidth data transmission system whereby pages are hidden in the unused lines of television pictures. Suitable TV sets can receive these to display screens of information, or subtitles on TV programs to assist people with a hearing impairment.

Teletext is a television information retrieval service developed in the United Kingdom in the early 1970s. It offers a range of text-based information, typically including national, international and sporting news, weather and TV schedules. Subtitle (or closed caption) information is also transmitted in the teletext signal.