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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   Sensitivity of touch screen (https://talk.maemo.org/showthread.php?t=31413)

mykenyc 2009-09-19 15:08
Re: Sensitivity of touch screen
 
Quote:
Originally Posted by ysss (Post 329833)
@pelago: i think that's true, as long as the pocket isn't damp. But, most people wouldn't want to take the chance of the phone dialing out your boss\lover\bastard by a technical faux pas.. plus the screen would be prone to misclick during the times of you putting the device in\taking it out of the pocket\shuffling it for comfort.

And what about power drain if you don't turn off the screen (both the lcd\oled and the touch screen sensor).
Yes, but i have the Mytouch and i've dialed crazy amount of people because any contact with skin activates it. I've woke up at times and seen myself call 2 people at night somehow so this just isn't a resistive issue. Also if you think about it if you take your bed sheet, wrap your bed sheet over your finger, and play with a capacitive screen it will still work. What i'm getting at is that the inner layer of your pocket is thin equivalent to a sheet so if your legs is rubbing against the screen you can activate functions on your phone also. Its a hit or miss but still very capable of calling someone believe me.

lcuk 2009-09-19 15:24
Re: Sensitivity of touch screen
 
ok

last week with the onedotzero stuff.
there was a LOT of hands on time with the device.
and i am pleased to say its really really responsive.

however a lot of people were still trying to be gentle and not break the screen so at first were doing feather like presses and swipes.
i watched them try it and it didn't always respond so they would just do it again a bit harder - it was like finding the biting point of your car clutch.
once they knew the level they were happy to use finger to navigate around and touch/swipe worked perfectly.

its MUCH better than n810 and its entirely possible now to do scrolling and selection with finger pads :)

pelago 2009-09-19 20:25
Re: Sensitivity of touch screen
 
Quote:
Originally Posted by mykenyc (Post 329842)
Yes, but i have the Mytouch and i've dialed crazy amount of people because any contact with skin activates it. I've woke up at times and seen myself call 2 people at night somehow so this just isn't a resistive issue. Also if you think about it if you take your bed sheet, wrap your bed sheet over your finger, and play with a capacitive screen it will still work. What i'm getting at is that the inner layer of your pocket is thin equivalent to a sheet so if your legs is rubbing against the screen you can activate functions on your phone also. Its a hit or miss but still very capable of calling someone believe me.
Thanks for that. That reassures me that I'm not missing out in this respect by not having a capacitive screen.

christexaport 2009-09-19 20:35
Re: Sensitivity of touch screen
 
I equate capacitive to a paint brush. It activates on contact. Resistive is like a crayon. You have to press, but only lightly, like using a pencil. The amount of touch required is very little, and like he said, once you use it 2 or 3 seconds, and realize it works off of detecting the pressure, not the contact, and you get it.

dansus 2009-09-19 20:38
Re: Sensitivity of touch screen
 
The screen is really sensitive but at times it takes a gesture to activate some parts, ie if your on the home screen, you have to start swiping from the middle to the edge to change desktops. But then in the repo, the smallest swipe downwards would start the list kinetically scrolling. (really nice btw)

So i think its built into the firmware that you have to make certain gestures in order to avoid accidental activation.

I like this process on the whole, with the iphone im constantly activating things by mistake with the lightest touch.
.

equim 2009-09-19 21:38
Re: Sensitivity of touch screen
 
Quote:
Originally Posted by mykenyc (Post 329842)
What i'm getting at is that the inner layer of your pocket is thin equivalent to a sheet so if your legs is rubbing against the screen you can activate functions on your phone also. Its a hit or miss but still very capable of calling someone believe me.
Surely the proximity sensor would lock the screen when it is in your pocket though? I've never had a touchscreen device like this but from what I've read the iPhone locks the screen when you put it up to your face to take a call - I'd be surprised if it didn't also lock it when you put it in your pocket and I'd be disappointed if the N900 didn't do this too.

At least it has a proximity sensor so it shouldn't take much code to make it do this if it doesn't out of the box.

ysss 2009-09-20 04:06
Re: Sensitivity of touch screen
 
Quote:
Originally Posted by equim (Post 329970)
Surely the proximity sensor would lock the screen when it is in your pocket though? I've never had a touchscreen device like this but from what I've read the iPhone locks the screen when you put it up to your face to take a call - I'd be surprised if it didn't also lock it when you put it in your pocket and I'd be disappointed if the N900 didn't do this too.

At least it has a proximity sensor so it shouldn't take much code to make it do this if it doesn't out of the box.
the iphone doesn't auto lock the device when you put it into your pocket, you'll have to do it manually. they only have a timer based auto-lock option based on (lack of) user input.

The input from proximity sensor alone is not adequate to determine the device's location (is the proximity sensor covered because it's inside the pocket or covered by the user's palm/fingers due to certain app's handling requirements?).

And there's also the issue of the screen being prone to misclick during the motion to 'holster' or take it out, as mentioned in previous post.

Thesandlord 2009-09-20 05:13
Re: Sensitivity of touch screen
 
Look at autolock on the N810. Uses the light sensor to detect if it is in the sleeve. Works almost perfectly, almost never mistakes your hand for the sleeve or something like that.

pycage 2009-09-20 09:06
Re: Sensitivity of touch screen
 
IIRC the N900 has a light sensor as well. Porting autolock shouldn't be a big problem if the D-Bus interface didn't change too much.

equim 2009-09-20 20:46
Re: Sensitivity of touch screen
 
Quote:
Originally Posted by ysss (Post 330075)
the iphone doesn't auto lock the device when you put it into your pocket, you'll have to do it manually. they only have a timer based auto-lock option based on (lack of) user input.
But it locks the screen when you put it up to your ear right?

Quote:
Originally Posted by Thesandlord (Post 330093)
Look at autolock on the N810. Uses the light sensor to detect if it is in the sleeve. Works almost perfectly, almost never mistakes your hand for the sleeve or something like that.

Excellent! I'll be sure to look that up when I get my N900. Thanks.


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