Quote:
Originally Posted by Aleron Ives
It's probably because 1264 is a multiple of 16. Most video compression techiques divide images into 16x16 squares, so displays tend to be multiples of 16 pixels. Although an e-reader isn't used for watching video, it's probably more efficient for things like image scaling when you're looking at book covers full screen. It may also be more efficient for the factory to produce the display panels that way.
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Thank you for your answer.
Divide by 16.
That explains 7", 8" eReaders
7" - 1680px : 1264px
1264/16= 79
8" - 1920px : 1440px
1440/16= 90
But in case of 6", 6.8", 7.8" eReaders;
There's still problem.
6" - 1440px : 1080px
1080/16= 67.5
6.8" - 1648px : 1236px
1236/16= 77.25
7.8" - 1872px : 1404px
1404/16= 87.75