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One of the advantages of using a Nipkow disk is that the image sensor (that is, the device converting light to electric signals) can be as simple as a single photocell or photodiode, since at each instant only a very small area is visible through the disk (and viewport), and so decomposing an image into lines is done almost by itself with little need for scanline timing, and very high scanline ...
Paul Julius Gottlieb Nipkow (German: [ˈpaʊl ˈgɔtliːp ˈnɪpkɔv]; 22 August 1860 – 24 August 1940) was a German electrical engineer and inventor. He invented the Nipkow disk , which laid the foundation of television , since his disk was a fundamental component in the first televisions. [ 1 ]
This was a spinning disk with a spiral pattern of holes in it, so each hole scanned a line of the image. Although he never built a working model of the system, Nipkow's spinning-disk image rasterizer was the key mechanism used in most mechanical scan systems, in both the transmitter and receiver. [5]
This is widely regarded as being the world's first public television demonstration. Baird's system used Nipkow disks for both scanning the image and displaying it. A brightly illuminated subject was placed in front of a spinning Nipkow disk set with lenses that swept images across a static photocell.
Paul Nipkow invents the Nipkow disk, an image scanning device that later will be a major breakthrough both for modern television and reading machines. [8] 1900 Invention Russian scientist Tyurin envisions the first OCR machine to serve as an aid to the visually handicapped, but never manages to develop it. [1] 1912 Product Text-to-speech
The Fernsehsender Paul Nipkow (TV Station Paul Nipkow) in Berlin, Germany, was the first regular television service in the world. [1] [2] It was on the air from 22 March 1935, until it was shut down in 1944. The station was named after Paul Gottlieb Nipkow, the inventor of the Nipkow disk. [3]
The system consisted of a large Nipkow scanning disk attached by a mechanical linkage to a record-cutting lathe. The result was a disc that could record a 30-line video signal. Technical difficulties with the system prevented its further development, but some of the original Phonovision discs have been preserved. [49] [50]
Rosing's invention expanded on the designs of Paul Nipkow and his mechanical system of rotating lenses and mirrors. Accordingly, Rosing's system employed a mechanical camera device, but used very early CRTs (developed in Germany by Karl Ferdinand Braun) as a receiver. Rosing's Braun Tubes consisted of two parallel metal plates that were used to ...