Exactly 15 seconds to go from a PDF page to the next one with the V0.35m update (JB)

Hi Guys,

I was wondering if you had such a delay when reading a PDF file with your jetBook ? (Since the last update V0.35m)
The file I'm reading is writted in the internal memory, the file has a size of about 2MB.

I already explained in a previous thread what I was thinking about this version, nobody has this problem with his jetBook ?

Again I mention here the fact that the 60% (or 80%, don't remember) zoom feature was removed from this version, for me it's
quite annoying to read the files especially made for my jetBook. (learning English in fact with subtitle coming from a dvd riper)

Thanks to Ken's help I received very good advices and a lot of info about the jetBook, a lot more than from Ectaco; absolutly true.

Any information from people having this problem would be very appreciated, thank you in advance.

Chris

I have a "slow" pdf file, but I think it is due the way the pdf was generated (a TV manual, with a funny diagramation), since other pdf files, even larger ones, flip pages much faster than this one.

Hi jorlando,

I tried with some PDF that I don't have the need to read to verify this and you right jorlando, even more complicated files are very fast 1-2 seconds maximum.
So to be certain, it would be useful to know if it is only my jetBook or the PDF file I'm using that don't fit the jetBook with this new version now.

Here's a pdf example file needing 15sec. to flip page to page, if somebody with JB and V0.35m could make a try and confirm it's working fast or slow on its JB it should be a fast way to find out my problem.

Maybe than in this case reworking the pdf with some specific software like calibre as Ken said in another topic could resolve the problem.

Thanks in advance for any information !

Chris

Just a guess, since I have a Jetbook lite (firmware 0.16): your pdf is being treated as a image, I think that you used some kind of virtual printer to generate a pdf from a text file.

Since each page is a image I think that the Adobe PDF viewer that is used by the jetbooks has to do some extra work to fit/scale each page.

Larger and more complexes pdf aren't slower since the pdf reader is just scaling/arranging text in the screen, sometimes (with reflow on) text around images.

Save your files as text (rtf) and you'll have formatation, tabulation, italics, etc preserved for a much better reading experience than you are having now.

I tried running it through Calibre and converting it PDF>PDF with the output
paper size as "a7" and a page fits on the screen OK, but the text is small.
With the amount of white space around the text you might want to try "a6".

If you could have your program save as a text format instead of the image
format PDF you would probably get better results. If you can change the
ripper's PDF page size from "Letter" to A7 or A6 you would have a better
result, as well.

Luck;
Ken

Thank you both of you for checking this on your JBL.

In fact the software is the ImTOO subtitlle ripper, it takes the text from the dvd but not as a text at all, just like a picture, it's more like an OCR software that I need now to convert this to the text.

I don't even think that the "text" is encoded as a text on a DVD, that's why the software has only an image format output and pdf option, the standard printing is A4 (no setting), the only way to play with this is the character size 75-150%
but then I have to read again all my dvd to get a correct pdf file, not a good idea.

It's far better to install back the 0.33g version, it was faster and easer for showing the pdf to the screen with the right size, improved with its 60% zoom setting.

That's why I'm so excited to find out what happens with the mtd5 checksum (my other thread)

Thank you for your views about this.

Chris

Subtitles in DVDs are bitmap images. The extractors really are OCR software.

Look at doom9.org, there are tutorials, forums and download areas related to DVD authoring. Long time ago I used some software recommend by the users to extract subtitles and convert them to text.

Subtitles are images but the ImTOO ripper hasn't integrated an OCR with it, it only got image formats in output.
(It was fine enough for me and the JB till the last upgrade.)

The problem I would like to resolve is the NOR flashing and the mtd5 checksum error since it is probably because of them that I cannot
downgrade to V0.33g.

Is somebody even tried to downgrade its JB from the V0.35m btw ? Maybe it's not possible anymore ! (I'm just saying that because I'm out of idea ...)

Need some help please.

Chris

diskjoncter wrote:Subtitles are images but the ImTOO ripper hasn't integrated an OCR with it, it only got image formats in output.
(It was fine enough for me and the JB till the last upgrade.)

The problem I would like to resolve is the NOR flashing and the mtd5 checksum error since it is probably because of them that I cannot
downgrade to V0.33g.

Is somebody even tried to downgrade its JB from the V0.35m btw ? Maybe it's not possible anymore ! (I'm just saying that because I'm out of idea ...)

Need some help please.

Chris

Hi Chris,

Thanks for the question. As some of the helpful users have mentioned this may be an image PDF file which can cause some delay in the page turning. To check you can open the PDF up on your PC and try and highlight individual words or phrases. If adobe does not let you do then then it is an image file. Their might be another way to find out if it is an image file but this is the only way i know of. All in all it seems this is more a difficulty with the File rather then the jetBook itself. Try converting the original script to some typed text like rtf, txt or anything of the sort that is possible.

As for downgrading i was told that it is not possible however i know a few others that have claimed they have done it successfully.

Hope this helps!

Hi Jerry,

Thank you for taking in consideration my message.

I really get it (the pdf/image concept) I have to mention that the delay wasn't this big (15sec. now !) with the 0.33g, the other thing is the removing of the 60% zoom feature:
because of this the text is 100% so it means bigger so it also means less characters on the screen each time and also means that I have to push more often on the arrows to navigate thru the text,
each time I push on one of these arrows it takes about 0.7 to 1sec, so when you do the math it becomes so unbearable to use it that you'd prefer to forget about it.

I put in attachments pictures of what I'm saying, I cannot use the "img" thing of this forum, sorry.
Please (check these pictures then add the 0.7-1 sec.delay between each of them) * horizontal divisions + add 15sec. delay when you flip the page and you'll have a glimpse of why I'm so angry with this update and why I don't want to use it anymore !

Hope that you understand my point of view and why I didn't accept well the way that the guy from the download service team leads me to these updates without saying anything about the "New features" before, notice that he told me AFTER that
"they were working now on the reflow feature" and that "they can't uninstall the version to go back to the previous one" so they knew this problem in the first place!

I have a bunch of pdf files of this kind, I don't manage to try to modify these files with an unknown software that I didn't need till now just because of this tricky update! I bought this jeBook to gain time and now I've wasted two days of my time to
resolve this, and I don't think that's all.

I just want to go back to my V0.33g patch 13, it was good enough for me, don't need DRM or anything, it's just for these files that I needed the jetBook.

Regards,
Chris

diskjoncter,

you have two problems:

- the new firmware does no scale to your needings
- your PDF has been generated to a very large size, almost A1 (564mm x 847mm, from the properties of your .pdf). That is why you needed the 60% zoom. In fact you were reducing the file to it fits the screen.

Solution:

"Reprint" your files as A4 or A5 format. To do this, open them with your favorite pdf reader and select one of the many virtual pdf printers available. Choose the output as A5 (or A4) paper and fit to print.

The resulting file is waaaaaay faster than yours to change pages and can be zoomed. A5 zoomed to 150% allows a good reading in landscape view, the text fits the screen.

Hi Jorlando,

Yeah ! I just noticed that it is very big by default, this software give only that, didn't noticed since it was working on the jetBook fine and that the PC adapted the size automatically for the screen and the printer, so I didn't dig on that way...

But about the virtual printer... Thank you for this information, I didn't even know that such a virtual printer existed in that easy use, my results with the first one I found (PrimoPDF) are nice when I just put the original in it and ask for A3 size and 100% in the jB, A4 gives a crap quality and A3 is worst.

RESULTS:

* Don't need to move horizontally for 90% of the text
* Need only one move to go from the top to the bottom of the page and it takes about 0.2sec
* Flipping time: 5sec.
* When you do the math I'm happy guy !

The primoPDF software is easy to use so that's a very great information.

I think this thread is resolved, this is a big step (at least for me).

So, now I can see this on my jB and it is what I was used to see before, thanks to you again: