Quote:
Originally Posted by earlyfilm
I suspect that there originally more claims and this potential interference patent could be the reason that RCA dropped their obviously superior I & Q system like a hot potato!
Jas.
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More speculation...
It's true that altering the CT-100's CTC2 chassis I/Q demodulation to R-Y/Q demodulation in the CTC2B chassis "saved one resistor in the matrix," as a retired RCA exec retorted on the internet some years ago.
It was then soon speculated that patent infringement had a hand in the switch.
Certainly the latter is the finer argument, as the quadrature transformer in the CTC2 chassis was replaced with another part number in the CTC2B. The reason: I/Q demodulation is in quadrature and R-Y/Q demodulation is not. Hence the need to go to the added expense of replacing a true quadrature transformer with one that isn't.
The really interesting question becomes: is there really any significant cross-color resuling from demodulation in the 21-CT-55 versus the CTC2?
I suspect very little.
Pete