Quote:
Originally Posted by Penthode
I am impressed with the H840CK15. It has 4 IF stages and appears to demodulate the chroma on the R-Y and B-Y axes. This means early on it appeared to be the sensible way forward.
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RCA seemed to flop around for a while, trying different schemes. But they settled on R-Y and B-Y, with the CTC-7. I wonder what took them so long, and I wonder if it was more political than technical? After all, RCA was famous for not wanting to be a licensee, and”borrowing” a Westinghouse patent was a no-go. Thus the 4 and 5 were a bit… experimental. Maybe by tge time the 7 came around, they were desperate to get color moving, and gave in?
Also, didn’t Zenith come up with the convergence scheme that ultimately got used by everyone?
(Also, my 4 notes that it uses patens from Phillips. I don’t know what that is about)
12-07-2022, 09:57 AM
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