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Old 03-13-2012, 12:45 PM   #1
kyriu
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Kobo touch technology

Hi all

Can someone enlighten (or post some links) on what kind of technology is used for the touchscreen in the Kobo reader (I want to shine near my girlfriend )?

thx!
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Old 03-13-2012, 04:18 PM   #2
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http://www.neonode.com/solutions/zforce/
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Old 03-13-2012, 05:08 PM   #3
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The Kobo Touch operates on an Infra Red detection system

A series of vertical and horizontal lines are beamed across the face of the screen, like graph paper

When a finger or stylus breaks the lines, it stops the transmitted infrared beam being picked up by the receiver on the opposite side which activates the firmware to complete the function such as page turn etc
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Old 03-13-2012, 07:31 PM   #4
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Quote:
Originally Posted by Quelch View Post
The Kobo Touch operates on an Infra Red detection system

A series of vertical and horizontal lines are beamed across the face of the screen, like graph paper

When a finger or stylus breaks the lines, it stops the transmitted infrared beam being picked up by the receiver on the opposite side which activates the firmware to complete the function such as page turn etc
When it is described like that, I wonder if a shiny finger can reflect the beam back to a different receptor resulting in confusion for the device and as a result cause various effects that we label bugs.
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Old 03-15-2012, 04:00 AM   #5
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thx for the pointers.
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Old 03-15-2012, 08:19 AM   #6
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Originally Posted by Xennex1170 View Post
... a shiny finger can reflect the beam back to a different receptor resulting in confusion for the device and as a result cause various effects that we label bugs.
It does! The most reflective part of a finger is usually the fingernail. So you have often trouble to trigger a desired action by tapping near the top edge.

Last edited by Koboyashi; 03-15-2012 at 08:52 AM.
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Old 03-15-2012, 11:36 AM   #7
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I first saw IR touch screen in 1981 same time frame of Osborn luggable computer.
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Old 03-15-2012, 01:44 PM   #8
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IR

Neonode used to make touchscreen phones using the same technology
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