Re:The Open Book Project: open-hardware e-ink eBook reader
by mdp2021 on Wednesday September 22, 2021 @08:30AM
(#28615548)
> and even watch [video]
But has Onyx fixed the dithering, optimizing for less pixel switching?
I have been played with using EPD for video for years: very usable, but the ghosting can be a problem.
The implementations of the firmwares around the Max2 had the issue of using the Floyd-Steinberg dithering only, which changes the dot status too frequently for EPD (where dot switch is very costly in energy/battery). For video, you want a dithering algorithm that is very conservative on the dots. (I was tempted to develop a video player following those principles, but time constraints did not permit.)
But has Onyx fixed the dithering, optimizing for less pixel switching?
I have been played with using EPD for video for years: very usable, but the ghosting can be a problem.
The implementations of the firmwares around the Max2 had the issue of using the Floyd-Steinberg dithering only, which changes the dot status too frequently for EPD (where dot switch is very costly in energy/battery). For video, you want a dithering algorithm that is very conservative on the dots. (I was tempted to develop a video player following those principles, but time constraints did not permit.)