Patent ID: 7656390

Claim:
A position detecting device, comprising: a position pointer; a plurality of sensors arranged in a direction of detecting a position; reception means for receiving a position pointed by the position pointer using the sensors via electromagnetic coupling or electrostatic coupling; and detection means for detecting the position pointed by the position pointer from the received signal; wherein the reception means extracts a predetermined number of sensors from among the plurality of sensors to form each of a plurality of groups and defines a unique order of selecting a sensor to be scanned for each group and wherein the order of selecting a sensor in a group to be scanned is different from the order given by the spatial arrangement of the sensors and that of an immediately previously scanned group, a transmission means for delivering a position detecting signal to the sensor so as to cause the sensor to transmit a position detecting signal for detecting a position pointed by the position pointer to the position pointer via electromagnetic coupling or electrostatic coupling; wherein the transmission means selects a sensor located at a position closest to the position pointer in a group where the position pointer is located and delivers the position detecting signal only to the selected sensor.