COORDINATE-POSITION DETECTING METHOD

摘要: PURPOSE:To make it possible to detect the coordinate positions accurately even if an object is separated from a moving surface and moved by computing distance form each receiver based on time difference receiving timings of pulse sound at receivers. CONSTITUTION:The light which are emitted transmitter 11 that provided in P detected with receivers 12 13 device 14 fixed arranged. Since speed sufficiently faster than speed, between timing t0 t1 t2 substantially made be until reaches 11. A control computes distances L1 L2 13. Then, X Y operated X1, Y1, X2 Y2 B In this way, can moved.