The IntelliTouch Touchscreen
The IntelliTouch Touchscreen
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Once X, Y, and Z coordinates have been determined, the controller transmits them
Once X, Y, and Z coordinates have been determined, the controller transmits them
to the computer.
to the computer.
The controller detects touches by comparing received signals to a reference
The controller detects touches by comparing received signals to a reference
waveform acquired in an untouched condition. This allows the controller to ignore
waveform acquired in an untouched condition. This allows the controller to ignore
contamination such as dirt and scratches. IntelliTouch Ultra controllers
contamination such as dirt and scratches. IntelliTouch Ultra controllers
instantaneously detect and factor out contamination. Original IntelliTouch
instantaneously detect and factor out contamination. Original IntelliTouch
controllers will detect and eliminate contamination when a "touch" appears
controllers will detect and eliminate contamination when a "touch" appears
stationary for about thirty seconds.
stationary for about thirty seconds.
In any event, a new reference waveform is then acquired, effectively ignoring the
In any event, a new reference waveform is then acquired, effectively ignoring the
contamination and returning the touchscreen to normal operation. If the
contamination and returning the touchscreen to normal operation. If the
contamination is removed, the controller repeats the process of acquiring a new
contamination is removed, the controller repeats the process of acquiring a new
reference waveform.
reference waveform.
Figure 2-1. IntelliTouch Touchscreen
Figure 2-1. IntelliTouch Touchscreen
The X and Y values are similar to Cartesian coordinates, with X increasing from
The X and Y values are similar to Cartesian coordinates, with X increasing from
left to right and Y increasing from bottom to top. Z increases with touch pressure.
left to right and Y increasing from bottom to top. Z increases with touch pressure.
These
These
absolute
absolute
coordinates are arbitrary and unscaled, and will vary slightly from
coordinates are arbitrary and unscaled, and will vary slightly from
unit to unit. Any coordinate normalization or scaling must be done at the driver
unit to unit. Any coordinate normalization or scaling must be done at the driver
level, and calibration to the display image must be performed for each unit.
level, and calibration to the display image must be performed for each unit.
Because of the stability of the IntelliTouch system, recalibration is not necessary
Because of the stability of the IntelliTouch system, recalibration is not necessary
unless the position of the image changes.
unless the position of the image changes.
Summary of Contents for IntelliTouch Ultra
Page 1: ...IntelliTouch IntelliTouch Ultra Ultra Product Manual Product Manual Revision 3 2 Revision 3 2...
Page 5: ...iv iv...
Page 11: ...x x...
Page 17: ...6 6 Chapter 1 Introduction Chapter 1 Introduction...
Page 35: ...24 24 Chapter 3 Touch Monitor Installation Chapter 3 Touch Monitor Installation...
Page 61: ...50 50 Chapter 4 Component Installation Chapter 4 Component Installation...
