Posted: Thu Dec 01, 2005 1:01 pm Post subject: Ultrasound and Distance Measurement
I'm planning to implement a system wherein a pen-like peripheral is used to determine the pointer position of a projected presentation. That way, I can translate this position to the actual position of the mouse pointer. I'm just wondering, can ultrasound be used to determine the pen's distance from, say, 4 ultrasound markers positioned in the corners of the projected image?
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Posted: Sat Feb 04, 2006 6:47 pm Post subject:
Ultrasound resolution in air is very limited. You'd be better off with IR or RF
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