{"title":"Past Forward: The Mechanical TV","authors":"Allison Marsh","doi":"10.1109/MSPEC.2024.10669143","DOIUrl":null,"url":null,"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.","PeriodicalId":13249,"journal":{"name":"IEEE Spectrum","volume":"61 9","pages":"68-68"},"PeriodicalIF":2.6000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10669143","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Spectrum","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10669143/","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
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.
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.