Read Sharp PN-L601 (serv.man4) Handy Guide online
Dec 2011
Issued by:
CE After Sales Service
Touch Panel
PRINCIPLE OF TOUCH PANEL
Ultrasound is transmitted by pressing a button from
the pen and it is received by the touch panel, which
enables the corresponding operation.
1 ) The ultrasound signal received by the ultrasound
microphone is amplified by the amp.
2 ) The signal is output to the CPU, and the ON/ OFF
of button can be detected from the frequency of
signal, and the type of button detected from the
period of signal interval.
3 ) It executes processing according to the detected
signal.
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