Patents Assigned to Christian Roche
  • Videotex system
    Patent number: 4303941
    Abstract: 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.
    Type: Grant
    Filed: May 6, 1980
    Date of Patent: December 1, 1981
    Assignees: Establissement Public de Diffusion dit "Telediffusion de France", Claude Fournier, Christian Roche
    Inventors: Bernard Marti, Alain Poignet, Claude Fournier, Christian Roche