19 replies to this topic

[deadmad7]

rvalkass, on 17 July 2010 - 01:25 PM, said:

No, it still won't detect it because the ONLY reason the iPhone^TM can detect your finger is because it measures the change in capacitance. The screen is coated with a conductor, carrying a current. Your finger is also a conductor. When you touch the screen this causes a change in capacitance, which the phone detects and measures to determine exactly where you're poking the screen. Heat has nothing to do with the detection. That's how it really works.

rvalkass, on 17 July 2010 - 01:25 PM, said:

No, it still won't detect it because the ONLY reason the iPhone^TM can detect your finger is because it measures the change in capacitance. The screen is coated with a conductor, carrying a current. Your finger is also a conductor. When you touch the screen this causes a change in capacitance, which the phone detects and measures to determine exactly where you're poking the screen. Heat has nothing to do with the detection. That's how it really works.

Wow... I was pretty sure I got it right... that's what its 'advertised' as. But I did some research and I found out that you aren't totally right. This IS really how it works -

As we now know, all the touch screens use different systems, but the majority of them use resistive or capacitive because they are the best technology so far. In a capacitive touch screen, it relies on a 'electrical charge', so when you touch the screen a charge of electricity is detected by the capacitive layer. In a resistive touch screen, it uses the push effect of your finger to alter the circuit's resistance to pinpoint your location on the screen but one of the main problems with the capacitive and resistive touch screens is that when you touch on 2 or more places at the same time -- nothing happens or the system goes haywire. That's where your point defers. In the iPhone^TM you can use both of your fingers because it uses a Multiple Capacitive TouchScreen Interface, which is basically a grid coordinate system where the iPhone marks the place where it detected the touch and as a 'point' on a grid and uses that data to locate the exact place -- then it makes into a gesture which can move objects on the screen. That's how it really really works

[rpgsearcherz]

rvalkass, on 17 July 2010 - 01:25 PM, said:

No, it still won't detect it because the ONLY reason the iPhone^TM can detect your finger is because it measures the change in capacitance. The screen is coated with a conductor, carrying a current. Your finger is also a conductor. When you touch the screen this causes a change in capacitance, which the phone detects and measures to determine exactly where you're poking the screen. Heat has nothing to do with the detection. That's how it really works.

Very nice explanation there. I'm still a newbie at physics but that shows there is a lot of stuff going on behind the scenes. It's amazing what people are able to create; especially when most of us can hear how things work and still have no idea, lol.

[Gammmae105]

Well, I just looked it up again and found that the iphone has many layers of touch-screen technology. One detects electrical current, but I still don't know why they'd need a lot more layers. Wouldn't just 1 layer suffice?

[Maggot]

Gammmae105, on 15 August 2010 - 01:21 AM, said:

Well, I just looked it up again and found that the iphone has many layers of touch-screen technology. One detects electrical current, but I still don't know why they'd need a lot more layers. Wouldn't just 1 layer suffice?

Just think of it this way.... They people of apple are just much more smarter than the people at Nintendo lol....

Remember Steve jobbs who developed apple computers smoking pot... Much smarter....

Edited by Maggot, 15 August 2010 - 01:49 AM.

[deadmad7]

Maggot, on 15 August 2010 - 01:49 AM, said:

Just think of it this way.... They people of apple are just much more smarter than the people at Nintendo lol....

Remember Steve jobbs who developed apple computers smoking pot... Much smarter....

You can't really compare the programmers and designers at Nintendo to the likes of Apple. Nintendo is a gaming company and only specialized on it, unlike Apple. It's like comparing a Ferrari to a Toyota, both cars but different still.

Second, Apple was invented by Steve Wozniak, and Ronald Wayne, especially Wozniak, he did most of the coding and he is the man "underneath". Steve Jobs (like Bill Gates) is just a commercial guy -- he is the reason why they got famous and he was the one who took the company in a new direction.

Third, Steve Jobs is a wacko. He travels to distant places just so he can smoke weed... and I hate his turtleneck black sweaters... does he ever wash it? Hes been wearing that ever since he came back to Apple after leaving in the late 80's.

Fourth, I love Apple. It is futuristic and it aims to provide good quality products (we have been seeing the bad side of apple for a while in the media now) and they never seem to amaze with their next line of products.

[BuffaloHelp]

Gammmae105, on 18 April 2010 - 03:17 AM, said:

Why is it that the iPhone is finger-sensitive and the NDS is pressure sensitive? Can one or the other really call itself a "touch-screen"? Just wanted to know what you guys thought.
In my opinion, the iPhone should have both touchscreen capabilities(finger and pressure-sensitivity). What do you guys think?

I would imagine each company felt their technology/method is/was better for their products. When I work with optics project we had to decide between CCD and CMOS. At the end it came to hybrid of CMOS and our own hardware.

I believe this is just the beginning of touchscreen technology. In just short years we'll see even greater touch computing and multiple touch/gesture devices. I saw a remote operating robotic arms that actually gave pressure feedback to a surgeon using reverse touch technology--causes fingers to feel small bumps and pushing forces embedded inside gloves.

[deadmad7]

BuffaloHelp, on 16 August 2010 - 04:13 AM, said:

I would imagine each company felt their technology/method is/was better for their products. When I work with optics project we had to decide between CCD and CMOS. At the end it came to hybrid of CMOS and our own hardware.

I believe this is just the beginning of touchscreen technology. In just short years we'll see even greater touch computing and multiple touch/gesture devices. I saw a remote operating robotic arms that actually gave pressure feedback to a surgeon using reverse touch technology--causes fingers to feel small bumps and pushing forces embedded inside gloves.

Aw man! This is ONLY the beginning of "Touch" technology? I thought we could FINALLY move on to the Mind Control technology we have seeing since the 80's iMind, iControl, meAndroid, htControl or whatever its going to called... i would rather end with the touch screens that are here right now! Well, actually i would like that Touch thing that they have Iron Man, Criminal Minds and those high tech offices commercial where there is a computer screen like a glass and its completely transparent and then they have like Bio data of the criminal on it/tony stark as the blueprint of iron man suits? And they touch it and then a little "wave" comes out? That would be cool! But are those possible? And if they are, when could we see the first prototypes of them? 5 years or 20 years or something like that?

[zanzibarjones]

deadmad7, on 16 August 2010 - 01:53 PM, said:

Aw man! This is ONLY the beginning of "Touch" technology? I thought we could FINALLY move on to the Mind Control technology we have seeing since the 80's iMind, iControl, meAndroid, htControl or whatever its going to called... i would rather end with the touch screens that are here right now! Well, actually i would like that Touch thing that they have Iron Man, Criminal Minds and those high tech offices commercial where there is a computer screen like a glass and its completely transparent and then they have like Bio data of the criminal on it/tony stark as the blueprint of iron man suits? And they touch it and then a little "wave" comes out? That would be cool! But are those possible? And if they are, when could we see the first prototypes of them? 5 years or 20 years or something like that?

The beginning of touch technology. So funny to hear people say that, like Apple invented it. They didn't, they stole it just like they stole everything else. They just have a killer marketing team. That is the only difference.

Touch screen devices have been around for a while. First in POS in stores, then in hand held devices like the Palms and pocket PCs. I have been using them since early 2000s. So yes I agree that it is in it's infancy and can progress greatly, but let's not kid ourselves. It's been around for a while.

[deadmad7]

zanzibarjones, on 16 August 2010 - 08:18 PM, said:

The beginning of touch technology. So funny to hear people say that, like Apple invented it. They didn't, they stole it just like they stole everything else. They just have a killer marketing team. That is the only difference.

Read correctly, i didn't mention that Apple invented it. I just said it as a "general" way like its just starting. And they didn't "steal" it, there hasn't been just usable touch screen platforms like iPhone and iTouch and iPad ever before. If ANYBODY else made such a great device, im sure they would have stolen the spotlight, for example Google or Microsoft. And its not always about the marketing, its more about the word of mouth with these kinds of things and those sleek looks.

Quote

Touch screen devices have been around for a while. First in POS in stores, then in hand held devices like the Palms and pocket PCs. I have been using them since early 2000s. So yes I agree that it is in it's infancy and can progress greatly, but let's not kid ourselves. It's been around for a while.

I have even used the first Palm Pilot which was made in 1996 and all the way upto the iPhone 4 releases last month, so i know what I'm talking about.. most of the time.

[zanzibarjones]

deadmad7, on 17 August 2010 - 01:32 PM, said:

Read correctly, i didn't mention that Apple invented it. I just said it as a "general" way like its just starting. And they didn't "steal" it, there hasn't been just usable touch screen platforms like iPhone and iTouch and iPad ever before. If ANYBODY else made such a great device, im sure they would have stolen the spotlight, for example Google or Microsoft. And its not always about the marketing, its more about the word of mouth with these kinds of things and those sleek looks.


I have even used the first Palm Pilot which was made in 1996 and all the way upto the iPhone 4 releases last month, so i know what I'm talking about.. most of the time.

I agree with you, and please forgive me, I was not saying you said they invented it, it's just that's the mentality of those who use the iphone and think that apple invented it. It's that whole, mac is better than God attitude.

Yes, the palm was a sweet object at the time. And they could have really gone far, but I guess a slick marketing team is all it take these days to make a company worth anything. Look at Geico....