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jlg432 · 11-07-2010, 09:53 AM

I was reporting an observation that I had made while working on adding TOC to an ePub file using Sigil. Note: All files reside on a 8 gig SDHC card.

The problem or issue was - if you overlay an existing e-book that has been opened and browsed (in your e-reader)with a copy that has been modified either format or wording it is very possible that you will not see the changes until you do either a card removal/insert (while the device is powered on) or a reset.

I believe that the e-reader keeps a portion of all open books in a work space or it keeps it's buffer content between power off/on (Sleep/Active) along with a log of open book locations.

If you overlay an opened e-book with one that has been modified you will not see the changes until you force the device to flush it's buffers by either doing a reset or sd(HC) card removal/insert while powered up.

Then you will see the changes on re-opening the e-book. You do not lose your open page location as that log is not affected by reset or card removal/insertion.

Clearing "Recent readings" does not impact this as well.

Backing out of the e-book as well has no impact on this issue.

Although I discovered this while working on an ePub file it is also relevant to all e-book formats. It is the way the e-reader works.

Yes I could have renamed the modified file and not discovered this issue until another time.

The problem is not one of the file not being read from the card on opening an opened e-book.

The problem is one of an old cache or buffer being accessed.

John

11-07-2010, 09:53 AM	#7
jlg432 Addict Posts: 237 Karma: 15786 Join Date: Apr 2010 Device: jetBook, ALP, Pandigital 7"Color(Black+ White), Kyros MID7015a	I was reporting an observation that I had made while working on adding TOC to an ePub file using Sigil. Note: All files reside on a 8 gig SDHC card. The problem or issue was - if you overlay an existing e-book that has been opened and browsed (in your e-reader)with a copy that has been modified either format or wording it is very possible that you will not see the changes until you do either a card removal/insert (while the device is powered on) or a reset. I believe that the e-reader keeps a portion of all open books in a work space or it keeps it's buffer content between power off/on (Sleep/Active) along with a log of open book locations. If you overlay an opened e-book with one that has been modified you will not see the changes until you force the device to flush it's buffers by either doing a reset or sd(HC) card removal/insert while powered up. Then you will see the changes on re-opening the e-book. You do not lose your open page location as that log is not affected by reset or card removal/insertion. Clearing "Recent readings" does not impact this as well. Backing out of the e-book as well has no impact on this issue. Although I discovered this while working on an ePub file it is also relevant to all e-book formats. It is the way the e-reader works. Yes I could have renamed the modified file and not discovered this issue until another time. The problem is not one of the file not being read from the card on opening an opened e-book. The problem is one of an old cache or buffer being accessed. John Last edited by jlg432; 11-07-2010 at 09:59 AM.