Read Sharp PN-L802B (serv.man3) Handy Guide online
PNL-802B
Principle of Touch Panel
14
4.
When a touch pen is used, the ultrasonic
signal emitted when operating the switch
of the touch pen is received by the
microphone provided at the upper section
of the screen, and amplified by the
ultrasonic receiver PWB, judging the
switch operation.
Information of the switch operation is
sent to the camera control PWB, which
sends together with information of the
position to the external PC.
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