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Old 09-14-2007, 05:13 PM   #1
Nogg
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An interesting aspect of BOOK_INDEX_COUNT in main.xml

For anyone playing around with the xml files, here's something I noticed:

I was reading a book last night, and suddenly I noticed very heavy ghosting from previous pages. I thought "uh-oh, my Reader's dying". I tried flipping pages to see if it made any difference, and if anything, it got worse. Then I realized that flipping pages wasn't flashing the screen to black like usual. It just redrew the text (like maybe some of you expected to see when you first got your reader).

Now, obviously, I was doing crazy nutso things to my Reader, so I knew it must have been my fault. In fact what I had done was replaced the "x of y" page count display with a series of non-alphanumeric characters. What I noticed was: if that crazy non-alphanumeric string was in the display, it would have the aforementioned non-blanking behavior. If, however, I changed the page with DPC (I had left the display normal after doing thatl), then the blanking would occur properly.

Ultimately I realized that if that value did NOT change, then the Reader would NOT blank between pages. If it did change, then the blanking would occur as usual.

I have modified my own Reader to take advantage of this by only blanking every 5 pages, so that most of my page flips are faster than usual, but the extra ghosting is kept to a minimum.

Note: I'm not sure if other fields that reside in the bar have the same effect, but they might.
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Old 09-14-2007, 07:57 PM   #2
anathema
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Interesting. Might increase battery power as well if the page flips are faster. The reader would not have to be in full run mode for as long and also less power expended flipping pages on the screen itself.
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Old 09-15-2007, 12:16 AM   #3
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I doubt you'd really notice it, unless you're reading almost constantly.
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Old 09-15-2007, 04:04 AM   #4
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I have seen this effect many times. After I tried to change some code and rebooted it this effect told me I did something wrong. Interesting that it could also be a positive thing.
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Old 09-15-2007, 04:31 AM   #5
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Ha ha! Like I said, at first I was freaking out, but now that it's intentional, I love it!
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Old 10-01-2007, 05:52 AM   #6
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Is it just about changing BOOK_INDEX_COUNT or changing any variable that is used for screen output? I mean is it possible to create another variable (like BOOK_INDEX_COUNT2) that will be use for displaying page number instead of BOOK_INDEX_COUNT, and use BOOK_INDEX_COUNT just for page blanking? Refreshing page number with 5 pages discrete is also not nice...
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Old 10-01-2007, 12:54 PM   #7
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I'm not sure. I was pretty surprised to see this kind of correlation, so I don't have much intuition about it. If I get a little extra time, I'll check it out.
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