RCA had really developed for the first trinitorn?

[firenzeprima]

i found others information it on www.sony.net

After the settlement of the strike and the successful launch of their ADR stock, Sony had returned to normal. An eventful 1961 drew to a close on December 16, when Sony concluded a contract with Paramount Pictures to provide technical assistance in the production of a chromatron tube and color television receiver utilizing it.

Sony was not alone. Dissatisfaction with the shadow mask screen was widespread. One possible substitute was the banana tube. Television signals were sent through this long thin tube, followed by RGB signals flashed at timed intervals, shuttered through a striped filter rotated through the beam. The rotating sound made a clattering noise, which in Japanese is onomatopoetically referred to as karakara. The color television using it was given the dubious, but amusing, name of karakara television, because of its phonetic closeness to the word color. The apple tube, which had been developed by Philco, was another possibility. Then there was the chromatron tube. This was the invention of famous American atomic physicist and Nobel laureate, Dr. E. O. Lawrence.