Patent ID: 7012567
Filing Date: 2006-03-14
Classification: G06F

Abstract:
1. An approach position input device, comprising: a plurality of first antennas arranged substantially in parallel with each other; a plurality of second antennas arranged substantially in parallel with each other, the second antennas being arranged in a direction to intersect the first antennas; an oscillator circuit for applying an alternating current voltage to the first and second antennas; a signal processing circuit for processing signals output from the first and second antennas, the signal processing circuit comprising: a change-over switch for selectively sending the output signals from the first and second antennas to the signal processing circuit, the change-over switch sending the output signals from the first and second antennas to the signal processing circuit one at a time; and a computing device for outputting a signal causing the change-over switch to perform a change-over operation.