Nec MultiSync X841UHD SST [12/23] Touch performance
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Nec MultiSync X841UHD SST [12/23] Touch performance

Nec MultiSync X841UHD SST [12/23] Touch performance
REV 2.1 JUL/31/2015 AN-SW-003
Baanto™ and ShadowSense™ are the trademarks of Baanto International Ltd., Canada. All other trademarks as used are the property of the respective owners.
touch screen to rotate the data in order to match up with the LCD. The available options are: Landscape,
Portrait, Landscape Flipped and Portrait Flipped.
3.2 TOUCH PERFORMANCE
3.2.1 NEW TOUCH DELAY
The New Touch Delay parameter allows the user to control the latency between a new touch event and when
the touchscreen reports the data. In other words, it introduces a delay whenever a new touch is detected. As
the ShadowSense technology is capable of detecting even the fastest motions, accidental touches could be
reported. Setting up the “New Touch Delay” parameter can avoid unintended touches. For example, in a
ticketing kiosk it might be useful to only report touches that the user intended and not the accidental brushing
of the screen by the cuff of a jacket. Increasing this parameter creates a longer delay and forces the user to
touch the screen for a longer period of time before a touch is reported.
3.2.2 MOTION
The Motion parameters smooth the touch data by applying two different averaging filters. Filter Size controls
the latency of the touch by adjusting how many frames of data are sampled and filtered together in any given
period of time. Filter Depth controls the fall-off and sensitivity of the filter to high speed motions. In general,
the larger the values of the filter, the smoother the touch data will be with a corresponding increase in
latency. For example, increasing the two parameters will create a smoother line for artists who intend to draw
on the screen with a brush. However, the latency will be increased slightly due to the act of filtering.
3.2.3 DEADBAND
The Deadband parameter helps users correctly identify left and right click selections. Because the
ShadowSense technology is capable of detecting touch with an incredibly high resolution, even small jitters of

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