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Progress ReportTheater Television*
BY BARTON KREUZER
RCA VICTOR DIVISION, CAMDEN, NEW JERSEY
Summary — In connection with a theater television demonstration of an instantaneous theater television projection system, a chronological record of the early development and current progress of theater television is presented. References are made to both instantaneous projection and the kinescope-photography methods. The demonstration consisted of the projection by theater television of lantern slides for the paper, live action, and film reproduction fed from the anteroom of the auditorium together with broadcast television programs received by radio transmission and telephone circuits from a near-by television station.
IT HAS BEEN THE PRACTICE of the Radio Corporation of America to report at intervals on the continuing developments in theater television. These reports have taken the form of various technical papers1"4 of the Society of Motion Picture Engineers, some accompanied by demonstrations, discussions, and demonstration before the last two annual conventions5-6 of the Theater Equipment Supply Manufacturers Association, a talk at the Televisor Magazine's Television Institute7 in April, 1948, and a very complete demonstration and explanation by Warner Brothers and RCA engineers at the joint meeting of the SMPE and the National Association of Broadcasters held in the Warner Brothers Studio in May, 1948. This report and exhibit of operating theater television equipment is another progress report in this series.
The foundation for this work by RCA goes back a long time, as age goes in this new art of television. The first work, started in 1928, culminated in a demonstration in January, 1930, in the RKO-58th Street Theater in New York City. The system provided a 60-line picture with reasonable brightness on an approximately 7l/y X 10foot screen, using a rotating-lens disk, Kerr cell, carbon-arc method. The need for further work was indicated, about ten years' more!
This led to the famous 1940 demonstration which some members of the SMPE witnessed at the New Yorker Theater in New York. (See Fig. 1.) Here a 441-line picture was shown with low brightness.
* Presented April 4, 1949, at the SMPE Convention in New York. 128 AUGUST, 1949 JOURNAL OF THE SMPE VOLUME 53