IMAGE DISPLAY AND CAPTURE DEVICES
The two essential ends of a video or TV system are the image pick-up device in the camera or telecine, and the display system in the TV set. Many years ago that implied an electron-scan (cathode ray) tube at both ends, and while a thermionic tube is still there in most TV sets and monitors, image scanners are now made of silicon photodiode arrays, while some specialised TVs and monitors use liquid-crystal screens, generally very small ones or very large projection types. In this chapter we shall examine them all, and look briefly at the older technology of TV camera tubes, starting with the most common display system, the thermionic picture tube. Although black-and-white tubes are seldom seen except ...
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