Re: Black Level on TVs, was: Why is video inverted for transmission?

Sep 23, 2007 0 Replies


"JANA" writes:


>
>> The early TV sets did not have any anti-glare coatings on the screen. The
>> natural colour of the non activated phosphors was a type of greenish colour.
>> Some phosphors were slightly lighter or darker.
>>
>> When watching the screen under normal operation, your eyes had the illusion
>> that the screen was black, because the surrounding white emission was very
>> bright in relation to the dark or non-illuminated parts.
>
>Yes, that's the basic idea. That translates to our eyes not having a
>high dynamic range, I think.
>
>--Randey
>

When one examines the "color triangle" (I know you know what I refer to), the amount of said triangle that we can actually see is far smaller than the extents shown in the triangle itself.

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