フォトフォン
(photophone から転送)
出典: フリー百科事典『ウィキペディア(Wikipedia)』 (2022/11/05 18:33 UTC 版)
フォトフォン(英語: photophone)は、光のビームで音声を伝送する通信機器である。仕組みは電話と似ているが、信号を電線ではなく変調された光で伝える。1880年にアレクサンダー・グラハム・ベルと助手のチャールズ・サムナー・テンターが共同で発明した[1][2]。ベルとその助手は、約700フィート(約200メートル)離れた場所までフォトフォンで音声を送信した[3][4][5][6]。
- ^ Bruce 1990, pg. 336
- ^ Jones, Newell. First 'Radio' Built by San Diego Resident Partner of Inventor of Telephone: Keeps Notebook of Experiences With Bell Archived 2002-02-19 at the Wayback Machine., San Diego Evening Tribune, July 31, 1937. Retrieved from the University of San Diego History Department website, November 26, 2009.
- ^ Bruce 1990, pg. 338
- ^ Carson 2007, pg. 76-78
- ^ a b c d e f g h Groth, Mike. Photophones Revisted, 'Amateur Radio' magazine, Wireless Institute of Australia, Melbourne, April 1987 pp. 12–17 and May 1987 pp. 13–17.
- ^ a b Mims 1982, p. 11.
- ^ Clark, J. An Introduction to Communications with Optical Carriers, IEEE Students' Quarterly Journal, June 1966, Vol.36, Iss.144, pp. 218–222, ISSN 0039-2871, doi:10.1049/sqj.1966.0040. Retrieved from IEEExplore website August 19, 2011.
- ^ Bell, Alexander Graham. "On the Production and Reproduction of Speech by Light", American Journal of Science, October 1880, Vol. 20, No. 118, pp. 305–324.
- ^ Grosvenor and Wesson 1997, p. 104.
- ^ Ernest Victor Heyn, Fire of genius: inventors of the past century: based on the files of Popular Science Monthly since its founding in 1872, Anchor Press/Doubleday – 1976, page 74
- ^ Mims 1982, pp. 6–7.
- ^ Mims 1982, p. 7.
- ^ Mims 1982, p. 10.
- ^ Mims 1982, p. 12.
- ^ Editorial, The New York Times, August 30, 1880
- ^ International Fiber Optics & Communication, June 1986, p. 29
- ^ Carson 2007, pg.77
- ^ Carson 2007, pg. 76–78
- ^ a b Bruce 1990, pg. 337
- ^ Phillipson, Donald J.C., and Neilson, Laura Bell, Alexander Graham, The Canadian Encyclopedia online. Retrieved 2009-08-06
- ^ a b Mims 1982, p. 14.
- ^ Bruce 1990, pg. 339
- ^ Hecht, Jeff. Fiber Optics Calls Up The Past, New Scientist, January 12, 1984, pp. 12–13.
- ^ Carson 2007, pp. 77–78
- ^ Carson 2007, pg.78
- ^ Cover page Technical World, March 1905.
- ^ "Correspondence: Wireless Telephony" (October 30, 1902 letter from Ernst Ruhmer), The Electrician, November 7, 1902, page 111.
- ^ Wireless Telephony In Theory and Practice by Ernst Ruhmer, 1908, pages 55–59.
- ^ Mims 1982, pp. 14–17.
- 1 フォトフォンとは
- 2 フォトフォンの概要
- 3 反応と採用
- 4 その後の開発
- 5 関連項目
- 6 外部リンク
- photophoneのページへのリンク