Tvohjelmia

Tvohjelmia refers to a television broadcasting system in which two separate television programs are transmitted on a single television channel, usually in a single frame or picture. This system was used in the past, particularly in Scandinavian countries like Finland and Sweden, to broadcast multiple programs simultaneously.

In the traditional tvohjelmia system, two programs were broadcast on the same channel at the same time, usually in adjacent or overlapping frames. One program was typically broadcast in the vertical format, while the other was broadcast in the horizontal format. Viewers could choose which program to watch by adjusting the antenna or tuning the television set.

The term "tvohjelmia" is derived from the Finnish language, with "tv" being an abbreviation of "televisio" meaning television and "ohjelmia" meaning programs. This system was widely used in the 1960s and 1970s, but it eventually gave way to more modern broadcast systems, such as stereo television and eventually digital television.

Tvohjelmia was considered an innovative approach to broadcasting multiple programs, but it had several limitations. The system had a limited channel capacity and often required viewers to physically adjust their television sets to switch between programs. Furthermore, the sound quality was often impaired due to the shared channel allocation.

Despite its limitations, tvohjelmia played an important role in the development of broadcasting technology, especially in the regions where it was used. However, with the advent of more modern broadcast systems, tvohjelmia has become largely obsolete, although it remains a footnote in the history of television technology.