1889‐1976 He was a telecommunications engineer born in Sweden and active in the United States. He moved to the United States in 1907, graduating from the University of North Dakota, and earned a doctorate in physics from Yale University in 1917. He joined the American Telephone and Telegraph Company, and transferred to Bell Telephone Laboratories when the company's research department was transferred there. He studied high-speed telegraphy, and in 1928 developed the concept of the Nyquist interval in relation to channel bandwidth and telegraph speed. This concept led to the sampling theorem in encoding and decoding. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
1889‐1976 スウェーデンに生まれ,アメリカで活躍した電気通信工学者。1907年にアメリカに渡り,ノース・ダコタ大学を卒業,17年にイェール大学で物理学の博士号を取得した。アメリカ電話電信会社に入り,同社の研究部門がベル電話研究所に移されるとともに同研究所へ移籍した。高速度電信を研究し,チャンネル帯域幅と電信の速度について〈ナイキスト間隔Nyquist interval〉の概念を28年に得た。この概念は,符号化,復号化における標本化定理につながるものである。 出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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