monochrome television การใช้

Monochrome television receivers only display the luminance, while color receivers process both signals.
Cathode depletion was uncommon in signal tubes but was a frequent cause of failure of monochrome television cathode-ray tubes.
U . S . Patent # 2, 874, 212 was granted February 17, 1959 for " Generation of Color Images from Monochrome Television Signals ".
As a bonus, the aluminum layer also prevented ion burn of the phosphor and the ion trap, common to older monochrome televisions, was no longer required.
The Astor radio corporation was a major manufacturer of early monochrome television sets in Australia, commencing production in 1956 in anticipation of services in Melbourne and Sydney.