Mechanical television
Videos
Mechanical television or mechanical scan television is an obsolete television system that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror drum, to
Watching a homemade mechanical-scan television receiver in 1928. The televisor (right), which produces the picture, uses a spinning metal disk with a series of holes in it, called a Nipkow disk, in front of a neon lamp. Each hole in the disk passing in front of the lamp produces a scan line that makes up the image. The video signal from the television receiver unit (left) is applied to the neon lamp, causing its brightness to vary with the brightness of the image at each point. This system produced a dim orange image
Ernst Ruhmer demonstrating his experimental television system, which was capable of transmitting 5 by 5 pixel images of simple shapes over telephone lines, using a 25-element selenium cell receiver (1909)
Baird and his television receiver
Jenkins Television Co. rotating disk television camera, 1931
Video
Videos
Video is an electronic medium used for the recording, copying, playback, transmission, and display of moving visual images and pictures, with or without accompanying audio. Video technology was initia
Mechanical television
…that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror drum, to scan the scene and generate the video signal, and a similar mechanical device at the receiver to display the picture. A mechanical television receiver was also called a televisor. This…
Serial digital interface (SDI)
Digital Visual Interface (DVI)
HDMI
DisplayPort