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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 20, Iss. 1 — Jan. 1, 1930
  • pp: 11–21


Herbert E. Ives and A.L. Johnsrud

JOSA, Vol. 20, Issue 1, pp. 11-21 (1930)

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No abstract available.

Herbert E. Ives and A.L. Johnsrud, "TELEVISION IN COLORS BY A BEAM SCANNING METHOD," J. Opt. Soc. Am. 20, 11-21 (1930)

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  1. For a general account of the methods and apparatus of television see "Symposium on Television", Bell System Technical Journal, pp. 551–652; October, 1927.
  2. "The Use of a Moving Beam of Light to Scan a Scene for Television," F. Gray, J. O. S. A. & R. S. I., p. 177; March, 1928.
  3. The sending end apparatus is so little altered that recent demonstrations of monochrome television in the Bell Laboratories’ auditorium have used one channel of the partly developed three-color apparatus. This has usually been the "green," which gives approximately orthochromatic effects.
  4. See "The Transformation of Color Mixture Equations, etc.," Ives, Journal Franklin Institute, p. 34; January, 1923.
  5. A method of sending the direct current component on a low frequency carrier over a separate channel of relatively low quality has been devised by R. C. Mathes (U. S. patent 1,671,302, May 29, 1928). By the use of three such channels the proper values for the general color of the field could be automatically established.

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