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Old 09-10-2009, 03:51 PM   #5
Shaggy
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Device: iRex iLiad, DR800SG
Quote:
Originally Posted by Dave Berk View Post
What is the response time & the contrast for the current eink generation?
260ms and 8:1, I think (maybe 9:1 ?).

Note, the 260/250 ms is a little misleading. That is the raw response time, but because of ghosting you almost never see that type of refresh done (unless it's a partial screen refresh). Most of the time the device does a "multi refresh" consisting of several stages every time you turn the page. It either inverts the current image, goes to a black screen, etc, and then refreshes the next page. There are typically 2-3 iterations of the response time that make up a single page turn (depending on the device's implementation).

Typical real world page turns with existing eInk are more on the order of 750ms.

So if the color has a 10ms shorter response time, you'll probably triple that for a single page turn. That would put it more on the order of 720ms vs 750ms for a page turn.

Assuming everything else is the same (multi stage refreshes, processing time, etc), which may not be true.
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