Quote:
Originally Posted by Scottnot
Thats not how most (some will offer 10 bit color) digital televisions work. Each color (R/G/B) consists of 8 bits (that's why there are 256 shades of gray). Now, the bits are either on or off; doesn't matter what voltages are applied; depends on the processor. Plasma and LCD each work a bit differently in how they manage this of course. Anyway, were not converting volts or mV to binary, we're just turning each bit on or off. So again, if all three colors are set to the same bit level, 00000000 is black and 11111111 is white.
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Yeah, I give you that most home monitors are 8-bit not 10-bit. I was using numbers that I know since I haven’t dealt in 8-bit in years and I don’t even remember how many mV equal a bit. And yes all is converted from mV to bits, where do you think the bits come from magic? So doing some simple math it looks like 1.5IRE equals 1 bit, so the black level would be 0010 0000 in binary and white would be 0101 1110. These numbers that I’ve calculated are for composite digital video not component digital. Lets see here it looks like component digital would be 0001 0000 for black and 1101 0111 for white, that’s 0mV for black and 700mV for white because in component digital video only gets 700mV not 714 like in NTSC. There are limits on the levels so it’s not all or nothing like you are saying making black all zeros and white all ones. Now getting back to the original post about the black level on a LCD vs. Plasma an LCD always needs some voltage so they are slightly brighter than a Plasma would be.