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Re: It's a shame that plasma tech is dead

Posted: 04 Jan 2021, 09:13
by thatoneguy
jorimt wrote:
03 Jan 2021, 10:07

I'm no CRT expert, but I'm pretty sure the CRT resolution increases you're referring to were only possible in a certain context, and when such progressive resolutions were tried at higher refresh rates, you'd run into physically undefeatable issues.

See sources such as:
https://www.quora.com/Could-we-have-mad ... n-Van-Duyn
CRTs could push 3200x2400 but the masks weren't able to resolve it. Monochrome CRT's had theoretically infinite resolution.
There were some CRT Projectors with enough of a high scanrate to push 4K too and those had no masks(since they were not projectors) so they didn't have the mask issue but they were still limited compared to Monochrome.

While we're linking stuff I came across this post https://www.avsforum.com/threads/4k-crt ... t-60214784

Re: It's a shame that plasma tech is dead

Posted: 04 Jan 2021, 10:26
by nuninho1980
thatoneguy wrote:
04 Jan 2021, 09:13
Monochrome CRT's had theoretically infinite resolution.
There were some CRT Projectors with enough of a high scanrate to push 4K too and those had no masks(since they were not projectors) so they didn't have the mask issue but they were still limited compared to Monochrome.

While we're linking stuff I came across this post https://www.avsforum.com/threads/4k-crt ... t-60214784
Yeah but the horizontal frequency and the number of horizontal lines aren't infinite.

Re: It's a shame that plasma tech is dead

Posted: 04 Jan 2021, 10:54
by thatoneguy
nuninho1980 wrote:
04 Jan 2021, 10:26
Yeah but the horizontal frequency and the number of horizontal lines aren't infinite.
Hence why I said "theoretically". Monochrome CRT's were only limited by the scanrate itself afaik.

Re: It's a shame that plasma tech is dead

Posted: 04 Jan 2021, 12:04
by jorimt
thatoneguy wrote:
04 Jan 2021, 09:13
CRTs could push 3200x2400 but the masks weren't able to resolve it. Monochrome CRT's had theoretically infinite resolution.
There were some CRT Projectors with enough of a high scanrate to push 4K too and those had no masks(since they were not projectors) so they didn't have the mask issue but they were still limited compared to Monochrome.

While we're linking stuff I came across this post https://www.avsforum.com/threads/4k-crt ... t-60214784
Regardless, it's safe to say that mass-manufacture, mass-marketable, consumer-level high Hz Ultra HD (let alone HDR-capable) CRT and/or Plasma at an affordable price was and is not viable, hence the development of alternate technologies to meet those ends (with any shortcoming as a direct effect included, of course).