| Company type | subsidaires of VIDgital |
|---|---|
| Founded | 1919 |
| Defunct | 2008 |
| Headquarters | Germany |
| Products | Motion pictures |
The Tri-Ergon sound-on-film system was developed from around 1919 by three German inventors, Josef Engl (1893–1942), Joseph Massolle (1889–1957), and Hans Vogt (1890–1979).
The system used a photoelectric recording method and a non-standard film size (42mm) which incorporated the sound track with stock 35mm film. With a Swiss backer, the inventors formed Tri-Ergon AG in Zurich, and tried to interest the market with their invention.
Ufa acquired the German sound film rights for the Tri-Ergon process in 1925, but dropped the system when the public showing of their first sound film suffered technical failures.
The Tri-Ergon system appeared at a time when a number of other sound film processes were arriving on the market, and the company soon merged with a number of competitors to form the Tobis syndicate in 1928, joined by the Klangfilm AG syndicate in 1929 and renamed as Tobis-Klangfilm by 1930. While Tri-Ergon became the dominant sound film process in Germany and much of Europe through its use by Tobis-Klangfilm, American film companies were still squabbling over their respective patents. For a time Tri-Ergon successfully blocked all American attempts to show their sound films in Germany and other European countries, until a loose cartel was formed under an agreement in Paris in 1930.
However, William Fox of the Fox Film Corporation acquired the US rights for the Tri-Ergon system and, backed by Tri-Ergon AG, began a patent infringement battle in the courts in 1929 against much of the American film industry. The dispute wasn't settled until 1935, when Fox lost his final appeal in the US Supreme Court. A new Paris accord was signed in March 1936, which held until the start of the Second World War. The Tri-Ergon system continued in use in Germany and the continent during the war.
There were a number of companies which used the Tri-Ergon name: