This is a list of American television-related events in 1933.
Events
edit- February 15 - Final episode for the horror anthology television series The Television Ghost. The series primarily focused on ghost stories.[1]
- April - In April 1933, the American inventor Philo Farnsworth submitted a patent application entitled Image Dissector, but which actually detailed a CRT-type camera tube.[2] This is among the first patents to propose the use of a "low-velocity" scanning beam and RCA had to buy it in order to sell image orthicon tubes to the general public.[3] However, Farnsworth never transmitted a clear and well focused image with such a tube.[4][5]
- June- A research group at the Westinghouse Electronic Company headed by the American inventor Vladimir K. Zworykin presented the iconoscope to the general public in a press conference in June 1933,[6] and two detailed technical papers were published in September and October of the same year.[7][8]Unlike Philo Farnsworth's image dissector, the Zworykin iconoscope was much more sensitive, useful with an illumination on the target between 4ft-c (43lx) and 20ft-c (215lx). It was also easier to manufacture and produced a very clear image. The iconoscope was the primary camera tube used in American television broadcasting from 1936 until 1946, when it was replaced by the image orthicon tube.[9][10]
- October - In his continued attempts to improve his image dissector, the inventor Philo Farnsworth introduced a multipactor in October 1933. [11][12]Farnsworth's image dissector was the first practical version of a fully electronic imaging device for television.[13] It had very poor light sensitivity, and was therefore primarily useful only where illumination was exceptionally high (typically over 685 cd/m2).[14][15][16]
Births
editDeaths
editReferences
edit- ^ Terrace, Vincent (10 January 2014). "Experimental Programs". Encyclopedia of Television Shows, 1925 through 2010. Vol. 3 (2nd ed.). ISBN 978-0-7864-8641-0.
- ^ US 2087683, Farnsworth, Philo T., "Image Dissector", published 1937-07-20
- ^ Schatzkin, Paul. "The Farnsworth Chronicles, Who Invented What -- and When??". farnovision.com. Retrieved 2010-01-10.
- ^ Abramson, A. (1995). Zworykin, Pioneer of Television. Urbana: University of Illinois Press. p. 282. ISBN 978-0-252-02104-6. OCLC 29954436. OL 1083768M.
- ^ Rose, A.; Iams, H. A. (September 1939). "Television Pickup Tubes Using Low-Velocity Electron-Beam Scanning". Proceedings of the IRE. 27 (9): 547–555. doi:10.1109/JRPROC.1939.228710. ISSN 0096-8390. S2CID 51670303.
- ^ Laurence, William L. (June 27, 1933). "Human-like eye made by engineers to televise images". New York Times.
- ^ Zworykin, V. K. (September 1933). "The Iconoscope, America's latest television favourite". Wireless World (33): 197.
- ^ Zworykin, V. K. (October 1933). "Television with cathode ray tubes". Journal of the IEE (73): 437–451.
- ^ "R.C.A. Officials Continue to Be Vague Concerning Future of Television". The Washington Post. 1936-11-15. p. B2.
- ^ Abramson, Albert (2003). The history of television, 1942 to 2000. McFarland. p. 18. ISBN 978-0-7864-1220-4. Retrieved 2010-01-10.
- ^ US 2071515, Farnsworth, Philo T., "Electron Multiplying Device"
- ^ US 2071517, Farnsworth, Philo T., "Multipactor Phase Control"
- ^ Abramson, A. (1987). The History of Television, 1880 to 1941. Jefferson: McFarland & Company. p. 159. ISBN 978-0-89950-284-7. OCLC 15366931. OL 2740120M.
- ^ ITT Industrial Laboratories. (December 1964). "Vidissector - Image Dissector, page 1". Tentative Data-sheet. ITT. Archived from the original on 2010-09-15. Retrieved 2010-02-22.
- ^ ITT Industrial Laboratories. (December 1964). "Vidissector - Image Dissector, page 2". Tentative Data-sheet. ITT. Archived from the original on 2010-09-15. Retrieved 2010-02-22.
- ^ ITT Industrial Laboratories. (December 1964). "Vidissector - Image Dissector, page 3". Tentative Data-sheet. ITT. Archived from the original on 2010-09-15. Retrieved 2010-02-22.
