You always wind up with third best. First best never comes, Second best comes too late.
Almost nobody in 1960 had color TV. The first time I saw it was in the summer of 1963, and the programs were in B&W, commercials in color, in the biggest TV market in the USA. -John ============== > On 04/17/2011 12:45 AM, Charles P. Steinmetz wrote: >> John wrote: >> >>> IMO, your crack about NTSC is unjustified. >>> >>> IMO, NTSC color was a very elegant engineering solution to backwards >>> compatability. Without that, we could well be still watching B&W. >> >> The other contemporary backward-compatible solutions -- PAL and SECAM -- >> did not suffer from the color drift that plagued color NTSC. So, there >> were superior methods of backward-compatible color insertion available >> and the FCC still chose the NTSC method. Bad decision, which saddled the >> US with inferior broadcast video for 60 years -- just as choosing 8VSB >> has done for digital video in the US. > > This is why "Never Twice Same Colour" became an alternative expansion of > NTSC. If you look at PAL you will see that it was made more resistive to > multipath phase errors by alternating the polarity of one of the colour > difference signals on every other field, which by interlacing will cause > the opposite turn in the colour spectrum on the next line so on average > they will cancel. > > As I recall it, the original choice of colours for the NTSC caused greif > over time and was in practice changed later. A quick check on the NTSC > wikipedia article verifies this. > > So NTSC didn't get it all quite right. > > Also, stepping from 60 fields per second to 60/1,001 fields per second > still haunts us when PAL stayed at 50 fields per second. For SD-SDI they > where able to match them up to a common 270 MBd, but for HD-SDI we have > 1,485 MBd and 1,485/1,001 MBd. This had to be solved with dual > oscillators in the first products, then with a re-synthesis chip and now > there is oscillators with dual frequencies which is good enough. This > 1,001 factor also comes into play with some audio production... so this > factor remains with changed underlying TV system. > > So some of their particular technology choices isn't a good long term > solution. > > NTSC did manage to get a colour solution out of the door, but it wasn't > the best technological solution for its day. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
