Past Forward: The Mechanical TV

IF 2.6 4区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Spectrum Pub Date : 2024-09-06 DOI:10.1109/MSPEC.2024.10669143
Allison Marsh
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Abstract

In 1885, German engineer Paul Nipkow patented the idea of capturing and transmitting a picture by dividing it into lines, using a spinning disk with a spiral of perforated holes to scan the lines. The lines were turned into electrical signals, and a receiver then turned the signals back into light. Nipkow never commercialized his “electric telescope,” but decades later, Scottish inventor John Logie Baird took the idea much further. Baird's electromechanical system transmitted images using a spinning Nipkow disk fitted with glass lenses and a photoelectric cell. A companion Nipkow disk in the receiver re-created the lines of the image and projected them onto 26 January 1926, select members of the Royal Institution gathered at Baird's lab in London to witness the transmission of a small but clearly defined image of a ventriloquist dummy's face. The event is often heralded as the first public demonstration of television.
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过去向前机械电视
1885 年,德国工程师保罗-尼普考(Paul Nipkow)获得了专利,他利用一个带有螺旋形穿孔的旋转盘来扫描图像,将图像分割成线条,从而捕捉和传输图像。这些线条被转化为电信号,接收器再将电信号转化为光。尼普考从未将他的 "电动望远镜 "商业化,但几十年后,苏格兰发明家约翰-洛吉-贝尔德(John Logie Baird)将这一想法进一步发扬光大。贝尔德的机电系统使用装有玻璃镜片和光电管的旋转尼普考圆盘传输图像。1926 年 1 月 26 日,英国皇家学会的部分成员聚集在贝尔德位于伦敦的实验室,见证了一个口技假人面部小而清晰图像的传输。这一事件被誉为电视的首次公开演示。
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来源期刊
IEEE Spectrum
IEEE Spectrum 工程技术-工程:电子与电气
CiteScore
2.50
自引率
0.00%
发文量
254
审稿时长
4-8 weeks
期刊介绍: IEEE Spectrum Magazine, the flagship publication of the IEEE, explores the development, applications and implications of new technologies. It anticipates trends in engineering, science, and technology, and provides a forum for understanding, discussion and leadership in these areas. IEEE Spectrum is the world''s leading engineering and scientific magazine. Read by over 300,000 engineers worldwide, Spectrum provides international coverage of all technical issues and advances in computers, communications, and electronics. Written in clear, concise language for the non-specialist, Spectrum''s high editorial standards and worldwide resources ensure technical accuracy and state-of-the-art relevance.
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