Describes teletext, a one-way broadcast transmission of text and graphics viewed on a television screen, and its use by publishers as one means of transferring textual and graphical information. Among the services described are news reports; weather forecasts; transportation, community, and consumer information; and advertising. (Author/JJD)

Describes the two-way Highly Interactive Optical Visual Information System (Hi-OVIS), involving the transmission and reception of educational, advertising, and public service programing, which has been in experimental use in Japan since 1978. Utilizing fiber optics, the system equips each house with a keyboard, television, television camera, and…

The Manitoba Telephone System has established an experimental integrated home information system called Project Ida in a trial group of 100 homes. Discussed here are the origin, current operation, and future prospects of this system, which includes videotex, fire monitoring, telemetering, and educational television. (Author/JJD)