Peripherals/Touch Screen: Difference between revisions
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* [http://docs.paperless-school.com/Infrared Infrared] |
* [http://docs.paperless-school.com/Infrared Infrared] |
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* [http://docs.paperless-school.com/StrainGaugeTechnology Strain Gauge technology] |
* [http://docs.paperless-school.com/StrainGaugeTechnology Strain Gauge technology] |
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* A simple light sensor could also do some light work. A tethered pen could detect flashed target boxes, like the old Nintendo Light Gun. For continuous drawing, the screen could flash through a series of patterns where the pen either sees light or dark. Each screen location would thus have a unique binary code flash through it, which would be reported by the pen's narrow light sensor. This screen scan will start in a small box near where the pen was last to reduce search time. |
* A simple light sensor could also do some light work. A tethered pen could detect flashed target boxes, like the old Nintendo Light Gun. For continuous drawing, the screen could flash through a series of patterns where the pen either sees light or dark. Each screen location would thus have a unique binary code flash through it, which would be reported by the pen's narrow light sensor. This screen scan will start in a small box near where the pen was last to reduce search time, and the eyesore of flickering. |
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Apparently most PDA’s use 4-Wire Resistive touch screen technology. However I am not positive on this. |
Apparently most PDA’s use 4-Wire Resistive touch screen technology. However I am not positive on this. |
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Revision as of 04:12, 15 November 2007
Technology
Different touch screen technologies:
- 4-Wire Resistive
- 5-Wire Resistive
- Capacitive
- Surface Acoustic Wave
- Infrared
- Strain Gauge technology
- A simple light sensor could also do some light work. A tethered pen could detect flashed target boxes, like the old Nintendo Light Gun. For continuous drawing, the screen could flash through a series of patterns where the pen either sees light or dark. Each screen location would thus have a unique binary code flash through it, which would be reported by the pen's narrow light sensor. This screen scan will start in a small box near where the pen was last to reduce search time, and the eyesore of flickering.
Apparently most PDA’s use 4-Wire Resistive touch screen technology. However I am not positive on this.