Other

L'etat Francais

Establissement Public De Diffusion Dit 'telediffusion De France'

Claude Fournier

Alain Poignet

Bernard Marti

Martine Le Marouille

Christian Roche

A teletext system for broadcast of pages of magazines to be displayed on television receiver screen. A subscriber entitled to receive a magazine can select a desired page thereof by actuating a keyboard to transmit 8-bit words belonging to two groups: first properly said character words and second function words. Among the function words, there are page flag words which indicate that a page number word follows it and make the selection possible. A row flag word is followed by a row number word to indicate the vertical address of a sequence of characters in a page. Adaptation means are provided for adapting the voltage/light characteristics, as in a current gamma correction, which permits correctly displayed logic signals.

System for digitally transmitting and displaying data on television

Videotex system provided with protection means against transmission errors. It can be used in the transmission and display of data on television recers for entertainment, information or instructional purposes.

Videotex system

Growing community of inventors

Rennes, France

Claude Fournier