Yes the work done to get color into the 3.58MHz (well something like 3.579545MHz) was incredible. The math involved in transmitting the RGB info is truly amazing. And it was all decoded through analog circuitry! No digital processing involved. Quite a feat for its day. In fact, NTSC TV's were pretty much Analog Computers that received a complex signal and processed it with discrete components into a viewable picture. The real complexity of the system was in the TV transmitter that had to provide a perfectly timed and on frequency signal that the TV would receive. When turned on, the TV had to be somewhere in the ballpark in order to latch on to the signal. But upon receiving that broadcast signal, the circuitry would lock its oscillators onto the horizontal and vertical timing pulses and be in sync (of course you had to adjust the horizontal and vertical hold to give the TV a fighting chance of locking on). NTSC (Never Twice the Same Color) was a bit of an issue with needing Color and Hue controls that adjusted the TV's reception of the 3.58MHz color carrier. PAL eliminated the need for those controls.
Of course now with digital TV, the idea of a vertical and horizontal hold controls, along with hue and color, seems so quaint! On Sunday, April 11, 2021 at 9:26:36 PM UTC-4 gregebert wrote: > At least it's just monochrome. NTSC composite video with color is rather > complex, though I must say it is also ingenious in that it is > backward-compatible to monochrome and packs so much video information into > a 3.58Mhz bandwidth. Similar for PAL, though higher bandwidth. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/de3f0f7f-7270-45be-bb16-5686cea27bb8n%40googlegroups.com.
