Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A flicker fixer or scan doubler is a piece of computer hardware that de-interlaces the output video signal. The purpose of a flicker fixer is to adjust a video signal prepared for TV to the needs of an ordinary CRT computer display. One example of a computer that was capable of pro ...Täielik kirjeldus
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A flicker fixer or scan doubler is a piece of computer hardware that de-interlaces the output video signal. The purpose of a flicker fixer is to adjust a video signal prepared for TV to the needs of an ordinary CRT computer display. One example of a computer that was capable of producing an interlaced image is the Commodore Amiga. The Amiga's default video mode is PAL or NTSC. NTSC and PAL screens have two fields called odd and even. The fields switch every 1/60th of a second on NTSC, or 1/50th of a second on PAL, which allows for more dynamic image whilst using a narrower signal bandwidth than full 50 or 60 FPS video would require, but also it can produce an alarming jittering effect for graphics that exist in only one field. This NTSC/PAL compatibility gave the Amiga a distinct edge in uses such as television production or gaming, however since the original Amigas were unable to produce vertically high resolutioned displays without flickering this was unsuitable for other, office-like uses, where there's a need to work with clear high resolution image often for several hours in order to perform typical tasks.