NTSC Tint Errors (20+ years to fix?)

[old_tv_nut]

Originally Posted by kfbkfb

What could have been done to improve tint
accuracy during the vacuum tube era in
NTSC color TV production, national distribution
and display at home (some sort of simple
reference signal from the [color] Networks
that was provided continuously)?


Kirk Bayne

Not much. The problem would be that vacuum tube circuits to select a particular line of the raster where something like VIR would be transmitted would have been far too expensive and failure prone to put in receivers. This sort of thing had to wait for ICs to be practical and affordable.

[Electronic M]

Originally Posted by old_tv_nut

Not much. The problem would be that vacuum tube circuits to select a particular line of the raster where something like VIR would be transmitted would have been far too expensive and failure prone to put in receivers. This sort of thing had to wait for ICs to be practical and affordable.

The only thing we could have done is subcarrier phase reversal like PAL...It would have made sets a bit more complex buy was done in tube TVs. RCA did investigate the method but didn't adopt it (I'd guess they didn't deem the automatic tint correction Worth the added complexity).