Thread: Some news about upcoming Onyx devices
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Old 03-14-2018, 05:08 PM   #404
mdp
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Quote:
Originally Posted by mdp View Post
Which technology only displays 8 colours? You are not perchance making reference to that shout that's around, "Advanced Color ePaper displays all 8 primary colors"? In that case I am absolutely positive it was a badly chosen unclear formula: it should only mean "we really compose red, green and blue well out out cyan, magenta and yellow (plus black and white)". The pictures of the prototypes show the full range of colour, so I do not believe it is like the "pure white black and red" e-ink "Spectra" displays - that would hardly be a breakthrough. Advanced Color ePaper is declared capable of 32,000 composed colours - which suggests as expected, 4 bits of graduation (16 shades) by 4 inks, minus one for some reason (2^15 = 32768). The breakthrough is that you can electrically control different inks - different electrical parameters control different inks, so they can be changed individually.
Correction: an E-Ink engineer specified in a video that for Advanced Color ePaper they ditched black, and only kept cyan magenta and yellow. So there is no mistery in that asyimmetry of the 32,000 results: it's 15 bits in three even chunks, which by the way interestingly means they now can provide 32 shades instead of 16.
It's just, I am skeptical about CMY without the K. I understand one less ink to manage is a hassle less, but Cyan+Magenta+Yellow = brown to my experience...
Maybe that's why they are going for "signage". Not just the 2 seconds refresh time, but brown can replace black in a poster, not in "textbooks' paragraphs".
Last edited by mdp; 03-14-2018 at 05:15 PM.
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