Touch Nook STR: Display Issue - Artifacts from previous pages. - Page 2

jridley · 06-09-2011, 12:20 PM

I think it's valid to say that the display does act differently depending on temperature. I had my Nook STR in my pocket for a while a few days ago, and when I pulled it out, it seemed to flash quite a bit on page turns until it cooled down a bit. The pages still looked fine though.

RAH · 06-09-2011, 04:30 PM

Quote:

Originally Posted by jswinden

I never experienced the random letter fading issue on K3, KDXG, Sony 350, or Sony 950. I would say take it back while it is still well within the return without questions period and exchange it for another one. Occasional light ghosting on the other hand is common on all eInks I've ever owned, but usually it is very light and not a problem.

Yeah, I think I will take it to the store and compare it to the display model while I can still return it. Good advice!

Donnageddon · 06-09-2011, 06:30 PM

Quote:

Originally Posted by jridley

I think it's valid to say that the display does act differently depending on temperature. I had my Nook STR in my pocket for a while a few days ago, and when I pulled it out, it seemed to flash quite a bit on page turns until it cooled down a bit. The pages still looked fine though.

You had a hand warmer in your pocket at the same time?

Or

Is that a nook in your pocket, or are you just glad to see me?

jridley · 06-10-2011, 10:07 AM

Quote:

Originally Posted by Donnageddon

You had a hand warmer in your pocket at the same time?

Or

Is that a nook in your pocket, or are you just glad to see me?

Just call me hot pants.

RAH · 06-10-2011, 10:37 AM

Quote:

Originally Posted by RAH

Yeah, I think I will take it to the store and compare it to the display model while I can still return it. Good advice!

Quoting myself above. I went to the B&N store this morning and brought my new Touch with me. I compared it against the display model, using same book, same font, etc. They appeared identical, which is the good news. So my worries have been eased.

But it is true, IMHO, that your letters can become kind of ragged looking on some screens as you are reading. It seems to vary a lot, and is NOT very noticeable and kind of subtle. But I can see it for sure. I could see it on the store model too, not always on the same page I was seeing it on my device. It doesn't seem to have any relationship to the refresh scheme (every 6 pages, as I understand it), or at least it didn't seem that way to me.

So, it seems that if you are an eagle eye like me, and are seeing some subtle - I stress subtle - differences in the smoothness and nice look of the lettering from page to page, that's just the way it works. IMHO.

HarryT · 06-10-2011, 10:43 AM

Quote:

Originally Posted by RAH

I agree that I did not have this problem with the Classic Nook, but it is somewhat reassuring to hear that it is common on other readers. I wonder if it is just something that happens especially with pearl screens.

No, it isn't. I have both a Kindle 3 and a Sony PRS-350, both of which have Pearl screens. No trace of ghosting on either of them. It is almost without a doubt the result of B&N's decision not to do a full screen refresh every page turn. Hopefully they'll come to their senses and make it a configuration item in a subsequent firmware update.

Scarpad · 06-10-2011, 11:02 AM

mine slightly ghosts goes away quick, its a feature because of the way they did the refresh, instead of refreshing everypage and getting the flash, they do it after every 6th page, where youll get the refresh flash. mines not that bad.

RAH · 06-10-2011, 11:10 AM

Quote:

Originally Posted by HarryT

No, it isn't. I have both a Kindle 3 and a Sony PRS-350, both of which have Pearl screens. No trace of ghosting on either of them. It is almost without a doubt the result of B&N's decision not to do a full screen refresh every page turn. Hopefully they'll come to their senses and make it a configuration item in a subsequent firmware update.

Harry, I wasn't talking about ghosting in the post you quoted. I was talking about less-than-perfect looking text letters. And my latest posting talks about what I think is going on. It is possible that some of this letter problem is caused by subtle ghosting, but I am not seeing that. I just see some less-than-perfect letters sometimes.

HarryT · 06-10-2011, 11:16 AM

Quote:

Originally Posted by RAH

Harry, I wasn't talking about ghosting in the post you quoted. I was talking about less-than-perfect looking text letters. And my latest posting talks about what I think is going on. It is possible that some of this letter problem is caused by subtle ghosting, but I am not seeing that. I just see some less-than-perfect letters sometimes.

My apologies for the misunderstanding. If you're seeing some letters with strokes that are too thin or too thick, that sounds like an issue with font hinting - the part of the firmware that converts the shape of the letters into pixels on the screen.

jswinden · 06-10-2011, 11:18 AM

It would be interesting to see this "ragged letter" effect under magnification so we can better guess at what is happening. I've never noticed this on other Pearl screens, but that is not to say it isn't there as it could be too subtle to notice.

negris123 · 06-10-2011, 01:06 PM

Quote:

Originally Posted by HarryT

My apologies for the misunderstanding. If you're seeing some letters with strokes that are too thin or too thick, that sounds like an issue with font hinting - the part of the firmware that converts the shape of the letters into pixels on the screen.

I only notice the letters are not as defined and clear when the screen has not refreshed and I have turned pages. It gets progressively worse until the screen refreshes completely. After the refresh, the letters look perfect. So I think this is part of the same problem of not refreshing every page turn.

RAH · 06-10-2011, 01:09 PM

Actually I did look with a magnifying glass. Indeed I could see a difference between say a "p" in one area of the screen vs one in another area (but I don't mean that the poor letters are always in the same area - it varies all over). Maybe I can take a closeup with my DSLR that can show it. Kind of hard, but at least eink photographs nicely, so maybe I can do it...

RAH · 06-10-2011, 01:11 PM

Quote:

Originally Posted by negris123

I only notice the letters are not as defined and clear when the screen has not refreshed and I have turned pages. It gets progressively worse until the screen refreshes completely. After the refresh, the letters look perfect. So I think this is part of the same problem of not refreshing every page turn.

It certainly makes sense that this is the case. I couldn't really establish any pattern to when letters would be poor and when they improved, but I wouldn't be surprised if it is as you say. I agree that they get progressively worse and then get better, so it sure sounds like that is what is happening.

ST-One · 06-10-2011, 01:32 PM

Quote:

Originally Posted by RAH

Actually I did look with a magnifying glass. Indeed I could see a difference between say a "p" in one area of the screen vs one in another area (but I don't mean that the poor letters are always in the same area - it varies all over). Maybe I can take a closeup with my DSLR that can show it. Kind of hard, but at least eink photographs nicely, so maybe I can do it...

You had to use a magnifying glass?
It really can't be that much of an issue then.

jswinden · 06-10-2011, 01:42 PM

Quote:

Originally Posted by ST-One

You had to use a magnifying glass?
It really can't be that much of an issue then.

You should read all the posts to avoid taking one out of context. I mentioned in an earlier post that it would be good to look at the problem letters under magnification to better judge the issue. Hence his statement...

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06-09-2011, 12:20 PM	#16
jridley Enthusiast Posts: 34 Karma: 2606 Join Date: May 2008 Device: Nook Touch	I think it's valid to say that the display does act differently depending on temperature. I had my Nook STR in my pocket for a while a few days ago, and when I pulled it out, it seemed to flash quite a bit on page turns until it cooled down a bit. The pages still looked fine though.

06-10-2011, 11:02 AM	#22
Scarpad Addict Posts: 310 Karma: 1013114 Join Date: Sep 2006	mine slightly ghosts goes away quick, its a feature because of the way they did the refresh, instead of refreshing everypage and getting the flash, they do it after every 6th page, where youll get the refresh flash. mines not that bad.

06-10-2011, 11:18 AM	#25
jswinden Nameless Being	It would be interesting to see this "ragged letter" effect under magnification so we can better guess at what is happening. I've never noticed this on other Pearl screens, but that is not to say it isn't there as it could be too subtle to notice.

06-10-2011, 01:09 PM	#27
RAH Guru Posts: 615 Karma: 575652 Join Date: Oct 2010 Location: Hampton, NH Device: Kobo Aura H20; Kobo ClaraBW	Actually I did look with a magnifying glass. Indeed I could see a difference between say a "p" in one area of the screen vs one in another area (but I don't mean that the poor letters are always in the same area - it varies all over). Maybe I can take a closeup with my DSLR that can show it. Kind of hard, but at least eink photographs nicely, so maybe I can do it...