09-16-2010, 06:40 AM | #46 | |
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09-16-2010, 02:05 PM | #47 | |
Nameless Being
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BTW, if it is heat related, then the number of pages read is probably not important. It is more likely related to how hot the inside of the reader or how hot the screen gets. So time exposure to heat should be more relevant than pages read. Last edited by jswinden; 09-16-2010 at 02:08 PM. |
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09-16-2010, 04:14 PM | #48 |
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350 does slow down in heat, but it is not a big deal
I just completed a heat test with my 350. I sat outside in the shade, no sunlight ever touched the reader, for an hour with the temperature at 90 degrees F, the humidity at 45%, and the heat index at 93 degrees. The entire time I had the 350 on and was reading a 1426 page ePub book at my normal pace. The reader was inside a Case Logic padded case during the test. In retrospect I probably should have removed it from this case as it is heavily padded and thus provides some degree of insulation to the back and sides. But I did not want to drop my 350 naked onto concrete!
I read for about 40 minutes before I became aware that the 350 might be slowing down as far as page turn speed. By the end of the hour the slow down was indeed quite noticeable. I came back inside and did my best to time the page turning speed with a stopwatch, though I found that difficult. But my best guess is that from initial finger contact to begin the swipe through the page turn was appx. 1.5 seconds. I was doing very fast swipes. The page turns were slow enough that the process of inverting the screen was extremely visible. That is, the screen turns black with light lettering then turns light with black lettering for the new page. The black screen seemed to last quite a while. I'm not sure what a normal speed is when page turning, but it takes considerably less time. However, I can live with 1.5 second page turns when in the heat as I will seldom be reading in that temperature. No other slow down or erratic behavior was noticed. At worst, I find this to be a very minor issue. Since the K3s also exhibit this issue, I have to think it might be the Pearl screen. I doubt that the K3 and 350 use the same processor, but if they do that could be the problem as well--if processor gets too hot it might slow down the system. I have not tried this test with my K3 yet, but I probably will soon. Note, the K3 page turns are probably twice the speed of the 350 when I do side by side comparisons using the same book on each. Last edited by jswinden; 09-16-2010 at 04:25 PM. |
09-16-2010, 04:42 PM | #49 |
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Thanks for the info. From what you say, it sounds like the slow downs make reading little, if any, worse that say reading on the old 505. Granted, it might be worse sitting with in in direct sunlight, or perhaps in a hot car. However, like you, these are not my preferred venues for reading.
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09-16-2010, 04:51 PM | #50 |
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Squirsier, how much of a slow down did you notice? Try to put it into time, as in seconds. If your slow down is a lot different from what I encountered then there could be something else going on. If not, then this slow down does not seem to be a big deal to me.
Last edited by jswinden; 09-16-2010 at 05:01 PM. |
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09-16-2010, 04:56 PM | #51 | |
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No, haven't tested this with ePub yet, but I did test those LRF on my PRS-300 and they all worked flawlessly. However, for the sake of science and whatnot, I'll test with an ePub tonight |
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09-16-2010, 05:03 PM | #52 | |
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I just popped over to a thread on the KindleBoards: http://www.kindleboards.com/index.ph...c,35798.0.html
In frazzledglispa's thread he/she states about the K3 page turn slow down pretty much what I described a couple posts above. frazzledglispa states: Quote:
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09-16-2010, 05:13 PM | #53 | |
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Big deal or not, it still is an issue with the Pearl screen that I am somewhat confused as to how the company manufacturing the screens missed that one! But unless you constantly read outside (or under an halogen lamp close by) where it's always warm, not that big a deal, no. |
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09-16-2010, 05:19 PM | #54 |
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But in all fairness to Viziplex and Sony and Amazon, they rate the screen for up to 95 degrees F, so we were taking it to the edge of its design parameters.
From the 350 User Guide, "On heat build-up: Heat may build up in the Reader while charging, or if it is used for an extended period of time." And from the 350 Marketing specs, "Operating Conditions: Operating Temperature: 41° F to 95° F (5°C to 35° C)" |
09-16-2010, 05:36 PM | #55 | |
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It could be worse, the sun could slow down in the presence of a K3. |
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09-29-2010, 08:27 AM | #56 |
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Hi all, first time caller long time listener.
I've searched the sony forum here about the page turn slowness. Has anyone been able to figure out what the cause is? I know it's not heat for me I can be in either a cool place or a warm place, I'm not near a light source that generates heat. The slowness could happen at page 30 or 300. When it does slow down the average wait time is 5 seconds, but it can some times be more. Actually swiping or using the page turn buttons doesn't matter either. So far I've been only reading epubs on it, I haven't tried a pdf yet. |
09-29-2010, 08:49 PM | #57 | |
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The slow down experienced in the sun is definitely heat related. It is a general slow down and affects all page turns as long as the reader is warm. The slow down is, however, quite modest -- perhaps 1.5 seconds a page turn at most in my experience. |
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