So I've had the Transformer update for about 20 hours now, which has given me time to play with it. The new circular cursor for the touchpad isn't a good design, but I can now see what they were trying to do, as they also use it to indicate touch and multitouch by filling the center of the circle with a dot for a single touch, and adding a second dot for multitouch. What they need to do is add a crosshair to indicate the exact click zone at the center of the circle.
An interesting side effect of the change, though, is that you can now very easily test crosstalk when using multitouch on the touchpad, and the result is NOT good on my B5O dock. I'd guess this is why many folks are reporting problems with multitouch zooming instead of scrolling or vice versa, etc.
To test: Touch the pad at right center with one finger. Move your other finger up and down the left-hand end of the touchpad without moving the other finger. Notice that not only does the left-hand white dot on the screen move, but the other dot also moves a LOT, when it should be staying still. I find it easiest to do this test in an app that doesn't support pinch zoom / scroll and has a dark background, so your eye isn't distracted by motion. For example, Moboplayer makes it easy to see.
Do the same thing again, but with one finger at top center of the pad, and the other at bottom center. If anything, the result seems even worse, to me. Even placing your fingers as far apart as possible at opposite corners of the pad, movement of one finger affects the other significantly. In some situations, it's actually possible to make the stationary finger's dot move exactly the same distance as the dot for the finger that actually moved.
I'm hoping that this is just a software issue that can be fixed in future firmware, but the logical side of me thinks this is more likely a hardware issue, and quite likely one that explains why they never offered pinch zoom until now, as they've found it tricky to try and work around and filter out the garbage data from the touchpad as much as possible.
I'd be interested to know whether the latest B7O docks show this problem too, or if it is improved at all.
Related
Hi,
there is something I have been really wondering about lately, and that is wether the HD's touch screen is multi touch capable by hardware, e.g. the hardware is able to identify several touches at the same time.
Now, if you do the following test, start Notes, and press two fingers at the same time on the screen (writing a note with touch). You will notice that the line is drawn in the middle between your fingers. I then started to think that if the screen isn't mulitouch capable by hardware, the point/line would either choose one finger and stick to that, or jump between those two fingers, not draw a point perfectly in between of those two. As it looks now, it seems that the point that is sent with the mouse click event, is a calculated point based on your fingers(1). A calculation that might have been done in the touch driver.
Now there might also exist another reasonable explanation to this, and that is when you press several fingers you press down a larger area of the screen at the same time(2). The point is then calculated to the center of this area. However, this does not realy fit in with the technical design of a resistive touch screen.
I have tried to explain in figures, look at the attachements.
Now, if scenario 1 should be the case, then there might be a chance to reverse engieneer the touch driver and create a multi touch capable phone right?
If anyone have more understanding on this field, please correct me. Maybe I can get some sleep after all.
Sorry for any typos, it's early in the morning..
Get no sleep...
skov82 said:
Hi,
there is something I have been really wondering about lately, and that is wether the HD's touch screen is multi touch capable by hardware, e.g. the hardware is able to identify several touches at the same time.
Now, if you do the following test, start Notes, and press two fingers at the same time on the screen (writing a note with touch). You will notice that the line is drawn in the middle between your fingers. I then started to think that if the screen isn't mulitouch capable by hardware, the point/line would either choose one finger and stick to that, or jump between those two fingers, not draw a point perfectly in between of those two. As it looks now, it seems that the point that is sent with the mouse click event, is a calculated point based on your fingers(1). A calculation that might have been done in the touch driver.
Now there might also exist another reasonable explanation to this, and that is when you press several fingers you press down a larger area of the screen at the same time(2). The point is then calculated to the center of this area. However, this does not realy fit in with the technical design of a resistive touch screen.
I have tried to explain in figures, look at the attachements.
Now, if scenario 1 should be the case, then there might be a chance to reverse engieneer the touch driver and create a multi touch capable phone right?
If anyone have more understanding on this field, please correct me. Maybe I can get some sleep after all.
Sorry for any typos, it's early in the morning..
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Click to collapse
I have a QVGA Titan and have noticed the same thing.
Also, say on TF3D hold down your finger on the home tab and then put another finger on the tab on the other side of the screen while still holding the home tab and it will go to the tab between them. Also if you slowly release one of the fingers it will cycle through the tabs....
dwizzy130
Am I the only one that seems to be having a major issue with this? It comes up more with the added on screen keyboard in 1.5, it seems.
The corners of the G1 screen do not respond to touch at all, and I find myself always having trouble hitting the keys on the corners of the virtual keyboard. Applications that require you to touch any corner of the screen with precision (ie tic-tac-toe) are annoying as well because it's difficult to get it to work.
Is there any fix in sight or is it a hardware limitation?
definitely a hardware limitation.
hardware limitation means: normal hardware limitation or limited due failure????
I only experience this problem with the right edge of my phone. The top, left, and bottom don't have any problems.
Touch also seems to be less sensitive when the phone is rested flat.
My phone has the sensitivity problem on the edges too (mostly on the right and top sides).
For example, it's almost impossible to drag an icon to the left screen, because it doesn't seem to reach the threshold area.
The protective screen (boxwave anti-glare) made the problem even worse, but since it's much more comfortable than the glass, I won't be taking it off.
The easiest way to test all this is to use the whiteboard application.
So, I ask the developers: Please don't place the buttons on the edges of the screen!
The worst apps in this regard I've seen so far were the Video player (don't remember its exact name, its seek slider was unusable), and the sudoku with the number chooser in the bottom. OpenHome's app slider has the same problem.
One day there'll be an android phone with a touchscreen as good as the iphone...
Actually the S2 touchscreen seems to be pretty good. The only issue I've found is this: There appears to be a 'move threshold'. I.e. when you touch the screen, the touch-down even is sent fine, but when you move your finger slightly no move event happens. You have to move at least.. maybe 2 mm, before any move events happen, at which point the touch jumps from its original position to the correct one. This has the effect of making all scrolls and pans start with a little jump.
Even the crappy touchscreen on my N1 doesn't do this. To me it sounds like a software issue -- maybe even deliberate -- rather than hardware. Does anyone know why they would do this, or how to fix it?
You should make a youtube video showing this issue.
Multitouch Visualizer shows this issue clearly (as well as, on a positive note, showing the screen can identify and track at least 10 touch points simultaneously -- nice!)
Yup, looks like software big. hope its fixed in next update. Try playing pool break game, the direction change due to this bug is annoying.
Sent from my GT-I9100 using Tapatalk
I think it's a future, not a bug: Not scrolling when you lift your finger off the screen, because you can't lift it perfectly vertically. It happens some time on my DHD.
I've noticed this in every android phone even my nexus one. It must be the way android is written, doesn't seem like there's much you can do about it =(
Also all android phones seem to lag with the touch input. The time between the actual movement of your finger and the screen moving is much greater than ios or wp7 devices. Its like the content is following your finger around lagged while on ios or wp7 its always directly under your finger.
The N1 does it in some places but not all. The most obvious place it doesn't do it in is the (stock) lock screen. It also doesn't do it when you slide the notification bar up from the bottom (but does when you slide it down from the top!)
The SGS2 seems to do it absolutely everywhere. I also think that the 'step' is bigger on the SGS2, although that might just be due to the screen being larger. It's quite possible that when someone creates an AOSP ROM for the SGS2 it'll go back to doing it in the same places as the N1.
Quick question to people who already own the Note.
My current phone is an HTC Desire. I didn't notice until I'd had it for a few months that the multitouch on that device leaves something to be desired; about all it's good for is telling how far apart your fingers are, which for pinch-zoom is fine. But if you want to use -- say for example -- an on-screen joystick, things don't really work so well.
I used an application called MultiTouch Visualizer 2 to prove the problem. If you touch in opposite quadrants of the screen, then slide your fingers to swap to the other two quadrants, most of the time the Desire will say you moved your fingers to the mid-line then back to the original quadrants. That is to say: fingers in top left and bottom right; slide top left finger to bottom left, and bottom right finger to top right; the app now registers your fingers as being in the top left and bottom right.
Does this happen with the Note? And can it recognise more than 2 fingers at a time?
I installed Multitouch Visualizer 2 and got 10 fingers multitouch.
There is no problem moving the fingers around, the hard part was putting 10 fingers on the screen.
Also there is no problem playing games like Shadowgun with the multitouch.
I am having some problems with the screen.
When the charger is plugged in the phone becomes very unresponsive. I have to click multiple times before it registers. The bottom-right area of the screen becomes crippled and cannot detect touch as long as the charger is plugged in. Everthing comes back to normal if i unplug the charger. As far as I know I am not the only one having the problem.
Hello
I have just noticed that the a little area in the upper left corner around the ESC and 1 key, has very poor sensitivity. I almost can't draw there, it's like the sensitivity drops in that small area. Has anyone else experienced this?
ClausG76 said:
Hello
I have just noticed that the a little area in the upper left corner around the ESC and 1 key, has very poor sensitivity. I almost can't draw there, it's like the sensitivity drops in that small area. Has anyone else experienced this?
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Hi,
I have never noticed it before; but when I specifically searched for it, it is indeed there as you described. Sensitivity drops and cursor jiggles a bit.
I don't think this is much of an issue thou. Every drawing tablet I had had some kind of issues around edges. And, honestly, when you ever need to draw around edges? You simply move the canvas
Thanks
I suspected that this was a design flaw rather than a defect
I have the same problem and also there is a complete line with some important jitter when you draw slowly on it. I reproduced it on two different Windows Yoga Book, I did not have the opportunity to test it on Android.
Just went to the store where it's bought. I tested 2 Android versions, that was on display. And they acted in exactly the same way. So I think it's the way it's designed
Here is a picture of what happened if you draw lines with a rule. We can see a lot of jitter... Like if there is a line area that completely interfere with the pen. I also tried to follow the keyboard keys frames with the pen : it is obviously problematic in the corner we talked about.
Code:
https://drive.google.com/open?id=0B1Qu-HXdIAp0U0tvVWpRT016Tm8
This is a frigging design and hardware flaw. I had this issue with my previous YB as well. What were they thinking? It kills me. I want my money back. There are other areas with iesuse. pretty much upper %15 is full of issues, your lines might get wiggly!
It sounds like noone from Wacom or Lenovo tested these devices for real.