Quote:
Originally Posted by Grimulkan
I still don't know if this is a DR controller-specific issue, or a general e-ink thing.
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It's a general eInk thing. Different manufacturers build in different methods for doing the refresh sequence, but they're all effectively doing the same thing you did in your example on every refresh. So, for instance, when you go from one of your images to another, the device is also doing intermediary refreshes with white/black/inverse versions of your image (depending on how they do the refresh).
For example, on a device that automatically does an inverse step in the refresh, if you do a 3 -> 4 -> 3 sequence, what is really happening is a 3 ->
4 -> 4 ->
3 -> 3 sequence (the device is doing the "bold" steps on it's own).
If it was a device that does an automatic white step, then your 3 -> 4 -> 3 would actually be performed as 3 ->
1 -> 4 ->
1 -> 3.
...etc.