Kenjiro Takayanagi

Japanese: 高柳健次郎 - たかやなぎけんじろう
Kenjiro Takayanagi

A pioneer of Japanese television technology. Born in Shizuoka Prefecture. Graduated from the Teacher Training School attached to Tokyo Higher Technical School (now Tokyo Institute of Technology) in 1921 (Taisho 10). Impressed by a picture of a futuristic television that he saw in a French magazine in 1923, he became an assistant professor at Hamamatsu Higher Technical School (now Shizuoka University Faculty of Engineering) in 1924 and devoted himself to developing his long-cherished dream of television. At the time, electronic imaging had not yet been realized, but on December 25, 1926 (Taisho 15), he succeeded in transmitting and receiving the character "I" using a mechanical Nipkow disk for imaging and a cathode ray tube for receiving the image. In 1928 (Showa 3), he succeeded in transmitting a person's face. In 1930, he applied for a patent for a "television transmitter using the integral method." Around the same time, American Zwolikin also applied for a patent on a similar principle, and in 1933 he produced the Iconoscope. In 1935, Takayanagi succeeded in outdoor transmission using an improved iconoscope, and in 1936 completed an all-electronic television (245 scanning lines). In 1937, he moved to NHK Technical Research Laboratories, where he began full-scale development research with the goal of broadcasting the Tokyo Olympics, scheduled to be held in 1940, and in the same year completed a television with 441 scanning lines and 30 frames per second. In 1939, he also successfully conducted Japan's first public television broadcast experiment. After World War II, he worked for Japan Victor (now JVC Kenwood), where he devoted himself to improving television and training engineers, and was named a Person of Cultural Merit in 1980, and was awarded the Order of Culture in 1981.

[Susumu Takayama]

"The Beginning of Television: The Day the Letter I Appeared on TV" by Kenjiro Takayanagi (1986/on-demand edition, 2001, Yuhikaku)

[References] | Iconoscope | Zwolikin | Television | Nipkow | Cathode ray tube

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

日本のテレビジョン技術の開拓者。静岡県生まれ。1921年(大正10)東京高等工業学校(現、東京工業大学)附属教員養成所を卒業。1923年フランスの雑誌に掲載されていた未来のテレビの絵に感銘を受け、1924年浜松高等工業学校(現、静岡大学工学部)助教授となり、念願のテレビ開発に没頭。当時、電子式撮像方式は実現しておらず、1926年(大正15)12月25日撮像に機械式のニプコーの円板、受像にブラウン管を用いて、「イ」の文字を電送・受像することに成功した。1928年(昭和3)には人物の顔の電送に成功。1930年「積分方式を利用するテレビジョン送像器」の特許を出願。同じころアメリカのツウォリキンもほぼ同じ原理の特許を出願し1933年アイコノスコープを製作した。高柳は1935年に改良したアイコノスコープにより屋外での電送に成功、1936年全電子式テレビ(走査線245本)を完成させた。1937年NHK技術研究所に移って、1940年に開催の予定であった東京オリンピック中継を目標に本格的な開発研究に入り、同年には走査線441本・画像数毎秒30枚のテレビを完成した。また、1939年日本初のテレビジョン放送公開実験に成功した。第二次世界大戦後は日本ビクター(現、JVCケンウッド)に勤め、テレビの改良と技術者の育成に尽力、1980年文化功労者に選ばれ、1981年文化勲章を受章した。

[高山 進]

『高柳健次郎著『テレビ事始――イの字が映った日』(1986/オンデマンド版・2001・有斐閣)』

[参照項目] | アイコノスコープ | ツウォリキン | テレビジョン | ニプコー | ブラウン管

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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