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Component operation removes the all too obvious problems and compromises of PAL, NTSC and SECAM. It brought its own problems. All routers, vision mixers etc had to have three separate channels. Three times as much patching, distribution amplifiers etc. All accurately matched for gain and timing.
This was only resolved when serial digital interfaces became standard. The original digital component interconnect with multiple twisted pairs on a 25 pin connector was only useful in limited areas. The first attempt at a serial digital interface never really happened. Sony designed the method that became standard, produced chips to do the job and the rest is history.
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