05-25-2020, 06:41 AM | #61 |
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It's quite a big rise in price compared to the JD website though, I thought they had like a 20-30$ difference but it seems price can difference can go up by 80$. It seems preferable to buy directly from them with that big price difference.
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05-26-2020, 01:13 PM | #62 |
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I am confused by some posts at the beginning of the thread.
It is apparent that the device does not contain Google Play nor the Google Play Services. Ok. Some seem to say that applications cannot be installed to the Hisense A5C. This sounds extremely strange: was that literal or does that include strong assumptions? I install applications on my devices with `adb install myapplication.apk` and no other method really. And many of my devices have never seen the light of the Internet - which is no hindrance to software installation. This is supposed to work right? The Hisense products have a developer mode, and the ability to install software, like all the rest of Android devices [I ever tried], right? And that software normally can be installed on Hisense devices is what I read from Question Mark: |
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05-26-2020, 02:07 PM | #63 | |
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I've simply used places like F-Droid to install the apps I need. Very easy to do, but perhaps not quite as safe as your method. However, my A5 is very seldom ever connected to the internet, nor used much as a phone. I got it mainly as an ultra portable ereader and now use it much more than my Onyx devices unless I am reading a PDF. |
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05-26-2020, 03:04 PM | #64 | |||
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(EDIT: Which would be one of the reasons why the colour e-ink phone kind of makes me wonder if... But - I am trying to understand how colour is managed - if the resolution is purposely downgraded, 300dpi to 100dpi, in the wrong parts of the rendering, an ugly mess could result. It should be seen, high definition pictures would be needed) Last edited by mdp; 05-26-2020 at 03:08 PM. |
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05-26-2020, 03:27 PM | #65 | ||
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The displays, I assume, are the same, but for the superimposed colour filter. Greyscale Update would have anything rendered on the 1440x720x4bit matrix. BUT, the colour filter is there, and it must disturb a bit the image... That is like having a thin colour-thick curtain over your standard e-reader. AND, the rendering may not be the usual - it depends on how it is engineered, and this matter is not perfectly clear. If the system thinks it has to display greyscale, it will go filling the 1440x720x4bit as usual. But it may think that it has to render colour, and for that it will use an unbelievable amount of dots, given the microscopic details of its Kaleido as I have seen it. In fact, normally I would guess 4 dots per coloured pixel, but this filter uses more tinted bars per EPD dot! According to goodereader.com, it uses a whopping 9, and that is weird to say the least. So it depends on what the following from Michael Kozlowski means in practice (because what is key here is: when/where does the device decide to render taking colour into account, and when/where does it render as usual): Quote:
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05-26-2020, 03:34 PM | #66 |
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This is from a video I saw (see attach).
Oddly, Kaleido uses three dots big filter stripes. |
05-26-2020, 03:45 PM | #67 | |
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But of course we are talking about A2, which you visit from time to time but do nor marry. Beware of modes which are not Greyscale Update and promise much but do not tell (or show) you the drawbacks. |
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05-26-2020, 03:54 PM | #68 | |
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Is it satisfactory to have a device on which you cannot really `dd` / install NATURALLY whatever OS you may want to run on it, with particular regard to more vetted ones. (No.) <bad feelings>I am currently because of an accident using a backup device that uses Android +n , instead of my usual Android 0. Oh, the very. many. things. they have broken. And I cannot dd my well working system, nor I can configure the new one.</bad feelings> </ot> OT, but very important. |
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05-27-2020, 03:28 PM | #69 | |
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You guys speak of 300dpi restrained to 100dpi, that's 3 times less, wouldn't we see a big difference while watching those video compared to an A5 ? I'm haven't compared directly but it seems the same, what do you guys think , especially those who already have a A5? |
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05-27-2020, 06:30 PM | #70 | |
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To get visual proofs, you should find frames of a rendering of a string in colour (instead of black), and that of pdf renderings. It depends on where the two renderers, 300dpi colour-agnostic and 100dpi colour conscious, trigger. Frames should be found showing the two. Considering the picture I have taken, it seems clear that Kaleido cannot show a black string, then a red string, then a(ny random) #rgb string, at the same resolution. The black one can always be 300dpi, above the mélange background. To build one in colour it has to take pieces from a 3x3 matrix. (In fact, I do not understand why Kaleido has not used an RG/BW scheme, picking from a 2x2.) Basically: if it renders any raster at 100dpi and any vector at 300dpi, then it's fine. If it actually does that. If the software applications or libraries used (e.g. Librera, android.webkit.WebView etc.) allow it or play along with it. And it seems to me pretty much certain that, for example, it will not be able to display high resolution strings in colour. Last edited by mdp; 05-27-2020 at 06:42 PM. |
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05-28-2020, 06:08 AM | #71 |
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05-29-2020, 12:40 PM | #72 | |
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05-31-2020, 05:34 AM | #73 |
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Is it not simple to install Google stuff using a Toolkit the way is done on Amazon Fire HD's?
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06-01-2020, 01:44 PM | #74 | |
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But anyway: how come the display is not found among eink modules, at www.eink.com/modules.html ? There is no 5.84'' 1440x720 display! And if one checks products by "newness" (verbatim, their term), one colour display appears but it is a 600x448 that is probably ACeP: shopkits.eink.com/product/5-65%cb%9d-e-ink-gallery-palette-4000-epaper-display-ab1024-ega-%e3%80%90display-module-only%e3%80%91/ |
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06-01-2020, 02:10 PM | #75 | |
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The concepts we are using here are strongly metaphors, not facts: it is certainly tinted, it does somehow build colour, but the perceptive trick there is much more unusual than RGB and CMYK: it does not even have black as K, the closest it has to K-black can be the dots partially overlapping the gaps between the tinted bars... Not to mention it does not have white (what I called "mélange")! So: how clever will be the algorithms that detect what to render and how? What is rasterized and what is kept as vector, and how are the subpixels treated in the rasterization? Because, just by thinking a bit on it, one could for example keep full-res vector, e.g. rendering this text, and still tint it red or mauve - by rendering anti-aliased black (meaning grey-surrounded black) and brightening it where that black overlaps the red-tinted bars of the filter (or similarly other RGB composition). Certainly this is not as clean as the rendering of a black vector graphics, first of all, but especially one should wonder whether such effect (as I proposed it) has an acceptable result. Not all tricks are feasible, nor all tricks are employed. In fact, for example, such device will have to rely heavily on A2 to display video. Now: will such A2 be employed cleverly or not? Because, for example, I have seen devices using a Floyd-Steinberg dithering for A2 rendering: which has the gigantic drawback of using very heavy randomness in a hardware technology which has the characteristic of having a breakthrough low cost in retaining dot state, and conversely a massive cost in changing such dot state (of dots which also have a limited lifetime) - thus losing the power efficiency of E-Ink's EPD. Clever dithering on EPD not only generically looks nice: it is also supposed to change as little dots as possible. Implementation not granted at all. |
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