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Originally Posted by Dulin's Books
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Well an eInk device you aren't using
is in standby, the screen just happens to be showing an image. When you press a button it wakes up again, changes the screen, and then goes back to sleep. There isn't a distinct third state, like there is with LCD devices of: Off, Screen Off, On.
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we're talking about battery life. if you want to put the tablet in sleep/stand by then go ahead. but then the reader has to be put in sleep/standby as well.
but the concern was that at 15 hours of reading time there isnt really much advantage in the eink display over the rival lcd device that can go 12 hours.
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There is three hours advantage.
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its like saying car A with a 5 gallon tank doesnt get any better gas mileage than car B with a 10 gallon tank because they can both go 300 miles on a tank. comparing how far they each go on a tank without knowing how much each tank holds is not actually comparing the efficiency .
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I'm not trying to argue the merits of display technology. What matters is what the actual devices, as delivered to the users, can do. The battery life for LCD devices has improved, the battery capacity for eInk devices seems to be shrinking, as people see reduced weight as more important, and the difference is no longer as significant.