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Originally Posted by 1080PsF
I’m sorry I didn’t mean for you to ever think that I was talking about the display converting the signal from mV to bits.
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Good, because that it the point of the discussion and the point of achieving "black levels" on any fixed pixel display. There are no voltages associated with this, only "on" bits and "off" bits. (of course, the bits are turned on and off by "logic levels" which are indeed voltages; but the differenece between the on state and the off state can be any chosen logic circuitry - TTL, DTL, etc., and do not discriminate minor voltage changes).
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Yes, you are right when the signal gets to the display it is already bits but the monitor then converts those bits back to voltage because that is how an LED lights up is by volts not bits.
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" . . that is how LED lights up . . " But we're not talking about LEDs; we're talking about LCD or Plasma fixed pixel displays.
In any event, not correct. As noted above, sure, the signal bits are converted to screen driver bits both of which are voltages, just at different levels; but the screen driver bits are on/off logic levels, not analog voltages. In the case of fixed pixel screen adjustment, there are no screen voltage adjustments per se, only pixels turned "on" or "off". There are not "dimmed" pixels or individual pixel brightness controls - each individual pixel is either
ON or
OFF. With an 8-bit display this results in 256 gray scale values and 16,777,216 colors all achieved without any dimming, only on/off.
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Well I guess if YOU (Scott) have never heard of composite and component digital video there must be no such thing. Why don’t you talk about things that you might know something about instead of blowing hot air about things you have no clue about.
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Needless to say, there is a big difference between "fixed pixel screen display" and encoding methods for transmission. Why you are bringing up the later is a mystery and certainly can contribute nothing to any discussion of fixed pixel display "black level" or contrast ratio.
I think I am talking about something that I understand a bit better than you, however.